CN102713101B

CN102713101B - Panel floor structure and architectural structural object

Info

Publication number: CN102713101B
Application number: CN201080061285.XA
Authority: CN
Inventors: 中安诚明; 半谷公司; 冈田忠义; 山本丰树
Original assignee: Nippon Steel Corp
Current assignee: Nippon Steel Corp
Priority date: 2010-01-14
Filing date: 2010-11-22
Publication date: 2014-10-15
Anticipated expiration: 2030-11-22
Also published as: JPWO2011086769A1; WO2011086769A1; JP4880087B2; CN102713101A; TWI470140B; MY156805A; TW201135021A

Abstract

Disclosed is a panel floor structure and an architectural structural object, the panel floor structure provided with an upper surface member and a lower surface member which are disposed approximately parallel to each other with a predetermined gap formed in-between; and at least a pair of steel cores which connect the upper surface member and the lower surface member to each other, thereby forming space. At least one dimension is adjusted to meet the following requirements (A) and (B), said one dimension being one of the dimensions among the length, the width, and the plate thicknesses of said upper surface member, those of said lower surface member, the length and the width of said cores, and the spacing between said cores. (A) The characteristic frequency of an entire vibration system consisting of the upper surface member, the lower surface member, and the cores should be 15 Hz to 45 Hz. (B) The characteristic frequencies of partial vibration systems should each be 707 Hz to 20,000 Hz, said partial vibration systems being a vibration system consisting of the upper surface member, a vibration system consisting of the lower surface member, and a vibration system consisting of the cores.

Description

Tabular floor framing and building construction

Technical field

The present invention relates to be applied to tabular floor (the パネ Le bed on the floor of building construction; Panel floor) structure and building construction.Especially, relate to and be suitable for improving the tabular floor framing of sound-proofing and the building construction that possesses this tabular floor framing.

The application based on 01 14th, 2010 No. 2010-005543, the Patent of Japanese publication and on 05 20th, 2010 No. 2010-116764, the Patent of Japanese publication, advocate priority, its content is applied to the application.

Background technology

As one of deck construction, proposing has a kind of tabular floor framing, and it comprises: be spaced from each other interval and upper plane materiel and the lower plane materiel of the steel of configuration abreast; And the core that is configured in the steel between plane materiel and lower plane materiel.In this tabular floor framing, due to than using concrete deck construction light weight in the past, the horizontal external in the time of therefore can reducing earthquake, and the quantity that can cut down the structural members such as post, beam, stake, basis.Thus, the advantage having is can realize lightweight and the cost cutting of whole building, and can carry out reasonable and economic structure design.

About the deck construction of building, require to become special in the good structure of the sound-proofing of important place plate impact sound (for example, with reference to patent documentation 1 and patent documentation 2) herein.

A kind of vibration control structure for building is disclosed in patent documentation 1, arrange and the pars intermedia of the length direction of the beam parts that plate member is supported is kept and fix the part that only shakes of these beam parts, the antinode part of the beam component vibration pattern after being provided with the part that only shakes, arranges the dynamic vibration absorber in the scope be set to eigentone and become 44 ~ 88Hz.Thus, the interval each other of the joint while shortening the vibration of beam parts, and reduce the vibration amplitude of beam parts and plate member.And, by anti-phase vibration, reduce response, and improve sound-proofing.

In addition, a kind of vibration control structure for building is disclosed in patent documentation 2, in upper floor, portion arranges damper, this damper by the vibration with respect to upper floor portion with the anti-phase vibration of vibrating to reduce upper floor portion, and, the eigentone that is arranged on the ceiling portion of lower floor of upper floor subordinate side is set as to the value different from the eigentone of damper.Thus, the disclosed technology of patent documentation 2 is, by suppressed the vibration of the certain vibration frequency of upper floor portion by damper, and effectively suppress the vibrational excitation by the caused lower floor of the vibration portion of upper floor portion, improve thus the sound-proofing for the vibration of 44.5Hz ~ 89.1Hz frequency band.

Prior art document

Patent documentation

Patent documentation 1: TOHKEMY 2007-126940 communique

Patent documentation 2: TOHKEMY 2007-211415 communique

Summary of the invention

The problem that invention will solve

Yet the disclosed technology of patent documentation 1 is, by possessing the part that only shakes, effectively to suppress the vibration of the plate member such as floor, ceiling.In addition, the disclosed technology of patent documentation 2 is, by possessing damper, to prevent from or reduce by the vibration producing in upper floor portion is caused producing sound in ceiling portion of lower floor.

But in possessing the formation of the part that only shakes, damper, cost cost, also necessary consideration configuration, therefore become miscellaneous.And, with possess the part that only shakes, damper is corresponding, it is heavy that total quality also can become.

The present invention completes in order to solve above-mentioned problem, and its object is, a kind of tabular floor framing and building construction are provided, and can consist of simple, realizes lightweight, and improves the sound-proofing for important place plate impact sound.

For solving the means of problem

(1) the tabular floor framing of a mode of the present invention is to possess: be spaced from each other predetermined distance and substantially in parallel configuration upper plane materiel and lower plane materiel; And will between plane materiel on these and lower plane materiel, link and form the core of at least one pair of steel in space; In this tabular floor framing, at least one in configuration space between length dimension, width dimensions and the thickness of slab of the length dimension of above-mentioned upper plane materiel and above-mentioned lower plane materiel and width dimensions, afore mentioned rules interval, above-mentioned core and above-mentioned each core is adjusted to, meet following (A) and following (B)

(A) eigentone of the body vibration system consisting of above-mentioned upper plane materiel, above-mentioned lower plane materiel and above-mentioned core is below the above 45Hz of 15Hz,

(B) eigentone of above-mentioned upper plane materiel, above-mentioned lower plane materiel or above-mentioned core partial vibration system is separately below the above 20000Hz of 707Hz.

(2) in the tabular floor framing above-mentioned (1) Suo Shu, be preferably, above-mentioned body vibration system has the isotropism that meets following formula (1), this tabular floor framing further possesses: crossarm member, the width of above-mentioned body vibration system or with the length direction of this width quadrature on devices spaced apart and extend configuration along two end limits of above-mentioned lower plane materiel, and support above-mentioned lower plane materiel; And fixed part, above-mentioned lower plane materiel and above-mentioned crossarm member are fixed; An eigentone f of above-mentioned body vibration system ₁meet following formula (2),

Ex·Ix=Ey·Iy ···(1)

f_{1} = \frac{π}{2} \times \sqrt{\frac{E_{1} I_{1}}{ρ_{1} S_{1}}} \times {(\frac{1}{l_{1}})}^{2} . . . (2)

Wherein,

Ex: the young's modulus of elasticity of the above-mentioned width of above-mentioned body vibration system

Ey: the young's modulus of elasticity of the above-mentioned length direction of above-mentioned body vibration system

Ix: the second moment of area (mm in above-mentioned body vibration system and cross section above-mentioned width quadrature ⁴)

Iy: the second moment of area (mm in above-mentioned body vibration system and cross section above-mentioned length direction quadrature ⁴)

E ₁: the young's modulus of elasticity (N/mm of above-mentioned body vibration system ²)

I ₁: the second moment of area (mm in the vertical cross section parallel with extending direction of above-mentioned crossarm member ⁴)

ρ ₁: the density (kg/m of above-mentioned body vibration system ³)

S ₁: the sectional area (mm in the vertical cross section parallel with extending direction of above-mentioned crossarm member ²)

L ₁: the configuration space (mm) of the above-mentioned crossarm member on above-mentioned width or above-mentioned length direction.

(3) in the tabular floor framing above-mentioned (1) Suo Shu, be preferably, above-mentioned body vibration system has the isotropism that meets following formula (3), this tabular floor framing further possesses: crossarm member, devices spaced apart on the above-mentioned width of above-mentioned body vibration system and above-mentioned length direction and extend configuration along four end limits of above-mentioned lower plane materiel, and support above-mentioned lower plane materiel; And fixed part, above-mentioned lower plane materiel and above-mentioned crossarm member are fixed; An eigentone f of above-mentioned body vibration system ₂meet following formula (4),

Ex·Ix=Ey·Iy ···(3)

f_{2} = \frac{π}{2} \times \sqrt{\frac{E_{1} I_{1}}{(1 - v_{1}^{2}) ρ_{1} S_{1}}} \times {{(\frac{1}{l_{1}})}^{2} + {(\frac{1}{l_{2}})}^{2}} . . . (4)

Wherein,

I ₁: the second moment of area (mm in above-mentioned body vibration system and cross section above-mentioned length direction quadrature ⁴)

ν ₁: the poisson's ratio of above-mentioned body vibration system

ρ ₁: the density (kg/m of above-mentioned body vibration system ³)

S ₁: the sectional area (mm in above-mentioned body vibration system and cross section above-mentioned length direction quadrature ²)

L ₁: the configuration space of the above-mentioned crossarm member on above-mentioned length direction (mm)

L ₂: the configuration space of the above-mentioned crossarm member on above-mentioned width (mm).

(4) in the tabular floor framing above-mentioned (1) Suo Shu, be preferably, above-mentioned body vibration system has the anisotropy that meets following formula (5), this tabular floor framing further possesses: crossarm member, devices spaced apart on the above-mentioned length direction of above-mentioned body vibration system and extend configuration along two of above-mentioned lower plane materiel end limits, and support above-mentioned lower plane materiel; And fixed part, above-mentioned lower plane materiel and above-mentioned crossarm member are fixed; An eigentone f of above-mentioned body vibration system ₃meet following formula (6),

Ex·Ix≠Ey·Iy ···(5)

f_{3} = \frac{π}{2} \times \sqrt{\frac{E_{1} I_{1}}{ρ_{1} S_{1}}} \times {(\frac{1}{l_{1}})}^{2} . . . (6)

Wherein,

I ₁: the second moment of area (mm in above-mentioned body vibration system and cross section above-mentioned width quadrature ⁴)

ρ ₁: the density (kg/m of above-mentioned body vibration system ³)

S ₁: the sectional area (mm in above-mentioned body vibration system and cross section above-mentioned width quadrature ²)

(5) in the tabular floor framing above-mentioned (1) Suo Shu, be preferably, above-mentioned body vibration system has the anisotropy that meets following formula (7), this tabular floor framing further possesses: crossarm member, devices spaced apart on the above-mentioned width of above-mentioned body vibration system and above-mentioned length direction and extend configuration along four end limits of above-mentioned lower plane materiel, and support above-mentioned lower plane materiel; And fixed part, above-mentioned lower plane materiel and above-mentioned crossarm member are fixed; An eigentone f of above-mentioned body vibration system ₄meet following formula (8),

Ex·Ix≠Ey·Iy ···(7)

f_{4} = \frac{π}{2} \times \sqrt{{\frac{D_{x}}{l_{1}^{4}} + \frac{D_{y}}{l_{2}^{4}} + \frac{2}{l_{1}^{2} \times l_{2}^{2}} \times (D_{l} + {2 D}_{xy})} \times \frac{1}{ρ_{1}}} . . . (8)

Wherein,

D_{l} = v_{1} \times \sqrt{D_{x} \times D_{y}}

D_{xy} = \frac{(1 - v_{1}) \times \sqrt{D_{x} \times D_{y}}}{2}

D_{x} = \frac{E_{1}}{(1 - v_{1}^{2})} \times \frac{I_{y}}{S_{y}}

D_{y} = \frac{E_{1}}{(1 - v_{1}^{2})} \times \frac{I_{x}}{S_{x}}

L ₂: the configuration space of the above-mentioned crossarm member on above-mentioned width (mm)

ρ ₁: the density (kg/m of above-mentioned body vibration system ³)

ν ₁: the poisson's ratio of above-mentioned body vibration system

Sx: the sectional area (mm in above-mentioned body vibration system and cross section above-mentioned width quadrature ²)

Sy: the sectional area (mm in above-mentioned body vibration system and cross section above-mentioned length direction quadrature ²).

(6) in the tabular floor framing above-mentioned (1) Suo Shu, be preferably, above-mentioned body vibration system has the isotropism that meets following formula (9), this tabular floor framing further possesses: crossarm member, the width of above-mentioned body vibration system or with the length direction of this width quadrature on devices spaced apart and extend configuration along two end limits of above-mentioned lower plane materiel, and support above-mentioned lower plane materiel; And fixed part, at least above-mentioned lower plane materiel in above-mentioned upper plane materiel and above-mentioned lower plane materiel is fixed on above-mentioned crossarm member; In the situation that only above-mentioned lower plane materiel is fixed on above-mentioned crossarm member, further possess other fixed parts that above-mentioned upper plane materiel and miscellaneous part are fixed, an eigentone f of above-mentioned body vibration system ₅meet following formula (10),

Ex·Ix=Ey·Iy ···(9)

f_{5} = \frac{{4.73}^{2}}{2 π} \times \sqrt{\frac{E_{1} I_{1}}{ρ_{1} S_{1}}} \times {(\frac{1}{l_{1}})}^{2} . . . (10)

Wherein,

ρ ₁: the density (kg/m of above-mentioned body vibration system ³)

(7) in the tabular floor framing above-mentioned (1) Suo Shu, be preferably, above-mentioned body vibration system has the isotropism that meets following formula (11), this tabular floor framing further possesses: crossarm member, devices spaced apart on the above-mentioned width of above-mentioned body vibration system and above-mentioned length direction and extend configuration along four end limits of above-mentioned lower plane materiel, and support above-mentioned lower plane materiel; And fixed part, at least above-mentioned lower plane materiel in above-mentioned upper plane materiel and above-mentioned lower plane materiel is fixed on above-mentioned crossarm member; In the situation that only above-mentioned lower plane materiel is fixed on above-mentioned crossarm member, further possesses other the fixed part that above-mentioned upper plane materiel and miscellaneous part are fixed, an eigentone f of above-mentioned body vibration system ₆meet following formula (12),

Ex·Ix=Ey·Iy ···(11)

f_{6} = \frac{3}{π \times l_{1}^{2} \times l_{2}^{2}} \times \sqrt{2 \times (7 l_{1}^{4} + {4 l}_{1}^{2} l_{2}^{2} + {7 l}_{2}^{4}) \times \frac{E_{1} I_{1}}{(1 - v_{1}^{2}) ρ_{1} S_{1}}} . . . (12)

Wherein,

ν ₁: the poisson's ratio of above-mentioned body vibration system

ρ ₁: the density (kg/m of above-mentioned body vibration system ³)

S ₁: the sectional area (mm in above-mentioned crossarm member and cross section length direction quadrature ²)

(8) in the tabular floor framing above-mentioned (1) Suo Shu, be preferably, above-mentioned body vibration system has the anisotropy that meets following formula (13), this tabular floor framing further possesses: crossarm member, the width of above-mentioned body vibration system or with the length direction of this width quadrature on devices spaced apart and extend configuration along two end limits of above-mentioned lower plane materiel, and support above-mentioned lower plane materiel; And fixed part, at least above-mentioned lower plane materiel in above-mentioned upper plane materiel and above-mentioned lower plane materiel is fixed on above-mentioned crossarm member; In the situation that only above-mentioned lower plane materiel is fixed on above-mentioned crossarm member, further possesses other the fixed part that above-mentioned upper plane materiel and miscellaneous part are fixed, an eigentone f of above-mentioned body vibration system ₇meet following formula (14),

Ex·Ix≠Ey·Iy ···(13)

f_{7} = \frac{{4.73}^{2}}{2 π} \times \sqrt{\frac{E_{1} I_{1}}{ρ_{1} S_{1}}} \times {(\frac{1}{l_{1}})}^{2} . . . (14)

Wherein,

ρ ₁: the density (kg/m of above-mentioned body vibration system ³)

S ₁: the sectional area (mm in above-mentioned body vibration system and vertical cross section above-mentioned width quadrature ²)

(9) in the tabular floor framing above-mentioned (1) Suo Shu, be preferably, above-mentioned body vibration system has the anisotropy that meets following formula (15), this tabular floor framing further possesses: crossarm member, devices spaced apart on the above-mentioned width of above-mentioned body vibration system and above-mentioned length direction and extend configuration along four end limits of above-mentioned lower plane materiel, and support above-mentioned lower plane materiel; And fixed part, at least above-mentioned lower plane materiel in above-mentioned upper plane materiel and above-mentioned lower plane materiel is fixed on above-mentioned crossarm member; In the situation that only above-mentioned lower plane materiel is fixed on above-mentioned crossarm member, further possesses other the fixed part that above-mentioned upper plane materiel and miscellaneous part are fixed, an eigentone f of above-mentioned body vibration system ₈meet following formula (16),

Ex·Ix≠Ey·Iy ···(15)

f_{8} = \frac{1}{2 π} \times \sqrt{{\frac{504}{l_{1}^{4}} D_{x} + \frac{504}{l_{2}^{4}} D_{y} + \frac{288}{l_{1}^{2} \times l_{2}^{2}} \times (D_{l} + 2 D_{xy})} \times \frac{1}{ρ_{1}}} . . . (16)

Wherein,

D_{l} = v_{1} \times \sqrt{D_{x} \times D_{y}}

D_{xy} = \frac{(1 - v_{1}) \times \sqrt{D_{x} \times D_{y}}}{2}

D_{x} = \frac{E_{1}}{(1 - v_{1}^{2})} \times \frac{I_{y}}{S_{y}}

D_{y} = \frac{E_{1}}{(1 - v_{1}^{2})} \times \frac{I_{x}}{S_{x}}

ρ ₁: the density (kg/m of above-mentioned body vibration system ³)

ν ₁: the poisson's ratio of above-mentioned body vibration system

(10) in above-mentioned (1) ~ above-mentioned (9) in the tabular floor framing described in any one, be preferably, further possess: the first core fixed part, above-mentioned core and above-mentioned on the contact site of plane materiel, above-mentioned upper plane materiel and above-mentioned core are fixed; And the second core fixed part, at the contact site of above-mentioned core and above-mentioned lower plane materiel, above-mentioned lower plane materiel and above-mentioned core are fixed; An eigentone f of above-mentioned upper plane materiel and above-mentioned lower plane materiel ₉meet following formula (17),

f_{9} = \frac{π}{2} \times \sqrt{\frac{E_{4} {t_{4}}^{2}}{12 ρ_{4} (1 - v_{4}^{2})}} \times {{(\frac{1}{a_{4}})}^{2} + {(\frac{1}{b_{4}})}^{2}} . . . (17)

Wherein,

E ₄: the young's modulus of elasticity (N/mm of above-mentioned upper plane materiel or above-mentioned lower plane materiel ²)

T ₄: the thickness of above-mentioned upper plane materiel or above-mentioned lower plane materiel (mm)

ρ ₄: the density (kg/m of above-mentioned upper plane materiel or above-mentioned lower plane materiel ³)

ν ₄: the poisson's ratio of above-mentioned upper plane materiel or above-mentioned lower plane materiel

A ₄: the length (mm) on the above-mentioned length direction of above-mentioned upper plane materiel or above-mentioned lower plane materiel

B ₄: the configuration space between above-mentioned core (mm).

(11) in above-mentioned (1) ~ above-mentioned (9) in the tabular floor framing described in any one, be preferably, further possess: above-mentioned core and above-mentioned on the contact site of plane materiel, a plurality of fixed parts that above-mentioned upper plane materiel and above-mentioned core are fixed; And at the contact site of above-mentioned core and above-mentioned lower plane materiel, a plurality of fixed parts that above-mentioned lower plane materiel and above-mentioned core are fixed; An eigentone f of above-mentioned upper plane materiel and above-mentioned lower plane materiel ₁₀meet following formula (18),

f_{10} = \frac{3}{π \times a_{4}^{2} \times b_{4}^{2}} \times \sqrt{2 \times ({7 a}_{4}^{4} + {4 a}_{4}^{2} b_{4}^{2} + {7 n}_{4}^{4}) \times \frac{E_{4} t_{4}^{2}}{12 ρ_{4} (1 - v_{4}^{2})}} . . . (18)

Wherein,

A ₄: the length of the above-mentioned length direction of above-mentioned upper plane materiel or above-mentioned lower plane materiel (mm)

B ₄: the configuration space between above-mentioned core (mm).

(12) in above-mentioned (1) ~ above-mentioned (9), in the tabular floor framing described in any one, be preferably an eigentone f of above-mentioned core ₁₁meet following formula (19),

f_{11} = \frac{π}{2} \times \sqrt{\frac{E_{5} {t_{5}}^{2}}{12 ρ_{5} (1 - v_{5}^{2})}} \times {{(\frac{1}{a_{5}})}^{2} + {(\frac{1}{b_{5}})}^{2}} . . . (19)

Wherein,

E ₅: the young's modulus of elasticity (N/mm of above-mentioned core ²)

T ₅: the thickness (mm) of the thickness of slab direction of above-mentioned core

ρ ₅: the density (kg/m of above-mentioned core ³)

ν ₅: the poisson's ratio of above-mentioned core

A ₅: the length of the above-mentioned length direction of above-mentioned core (mm)

B ₅: afore mentioned rules interval (mm).

(13) in the tabular floor framing above-mentioned (11) Suo Shu, be preferably an eigentone f of above-mentioned core ₁₂meet following formula (20),

f_{12} = \frac{3}{π \times a_{5}^{2} \times b_{5}^{2}} \times \sqrt{2 \times ({7 a}_{5}^{4} + {4 a}_{5}^{2} b_{5}^{2} + {7 n}_{5}^{4}) \times \frac{E_{5} t_{5}^{2}}{12 ρ_{5} (1 - v_{5}^{2})}} . . . (20)

Wherein,

E ₅: the young's modulus of elasticity (N/mm of above-mentioned core ²)

ρ ₅: the density (kg/m of above-mentioned core ³)

ν ₅: the poisson's ratio of above-mentioned core

B ₅: afore mentioned rules interval (mm).

(14) in the tabular floor framing above-mentioned (1) Suo Shu, be preferably, possess: crossarm member, the width of above-mentioned body vibration system or with the length direction of this width quadrature on devices spaced apart and extend configuration along two end limits of above-mentioned lower plane materiel, and support above-mentioned lower plane materiel; And fixed part, above-mentioned lower plane materiel and above-mentioned crossarm member are fixed; Wherein, meet following formula (21) ~ (23),

EI _f≥0.65×EI _all ···(21)

M _w≥0.40×M _all ···(22)

M _w≥EI _w/(k×l ⁴)(k=719)···(23)

Wherein,

M _w: the quality (kg/m of above-mentioned core ²)

EI _f: the bending stiffness (Nm of above-mentioned upper plane materiel and above-mentioned lower plane materiel ²)

EI _w: the bending stiffness (Nm of above-mentioned core ²)

M _all: the total quality (kg/m of above-mentioned upper plane materiel, above-mentioned lower plane materiel and above-mentioned core ²)

EI _all: the bending stiffness (Nm of above-mentioned upper plane materiel, above-mentioned lower plane materiel and above-mentioned core ²)

L: the configuration space (m) of the above-mentioned crossarm member on above-mentioned width or above-mentioned length direction.

(15) in the tabular floor framing above-mentioned (1) Suo Shu, be preferably, above-mentioned core has: with the upper planar portions of above-mentioned upper plane materiel with plane contact; With the lower flat portion of above-mentioned lower plane materiel with plane contact; And the rake tilting with respect to above-mentioned upper plane materiel and above-mentioned lower plane materiel; Above-mentioned upper planar portions, above-mentioned rake, above-mentioned lower flat portion form continuously according to this order.

(16) in the tabular floor framing above-mentioned (1) Suo Shu, be preferably, in above-mentioned space, be filled with sound absorption material.

(17) the tabular floor framing of a mode of the present invention is to possess: be spaced from each other predetermined distance and substantially in parallel configuration upper plane materiel and lower plane materiel; And will between plane materiel on these and lower plane materiel, link and form the core of at least one pair of steel in space; In above-mentioned space, possesses the sound absorption material being filled, at least one in configuration space between the length dimension of the length dimension of above-mentioned upper plane materiel and above-mentioned lower plane materiel, width dimensions, thickness of slab, afore mentioned rules interval, above-mentioned core, thickness of slab and above-mentioned each core is adjusted to, meet following (A)

(A) eigentone of the body vibration system consisting of above-mentioned upper plane materiel, above-mentioned lower plane materiel and above-mentioned core is below the above 45Hz of 15Hz.

(18) in the tabular floor framing above-mentioned (1) or above-mentioned (17) Suo Shu, be preferably, possess a plurality of plate component parts, this plate component parts extends on above-mentioned length direction, and there is junction plate, be arranged on one end of this junction plate the upper flange extending on above-mentioned width, and be arranged on the other end of above-mentioned junction plate the lower flange extending to the direction contrary with above-mentioned upper flange, above-mentioned a plurality of plate component parts, with above-mentioned upper flange and above-mentioned lower flange, forming respectively conplane mode adjacency on above-mentioned width arranges, in abutting connection with a plurality of above-mentioned upper flange of arranging, form above-mentioned upper plane materiel, in abutting connection with a plurality of above-mentioned lower flange of arranging, form above-mentioned lower plane materiel, above-mentioned junction plate is above-mentioned core.

(19) mode of the present invention building construction be to possess above-mentioned (1) or above-mentioned (17) described tabular floor framing.

The effect of invention

According to the tabular floor framing above-mentioned (1) Suo Shu, the tabular floor framing consisting of upper plane materiel, lower plane materiel, core, has eigentone of body vibration system and an eigentone of partial vibration system.When these eigentone is in the range of value of important place plate impact sound (surpass 45Hz and lower than the scope of 707Hz), sound-proofing reduction.Therefore, in this tabular floor framing, at least one in configuration space between the length dimension of the length dimension of upper plane materiel and lower plane materiel and width dimensions, predetermined distance, core, width dimensions and thickness of slab and each core is adjusted to, and meets above-mentioned (A) and above-mentioned (B).Thus, eigentone of body vibration system and an eigentone of partial vibration system, become beyond the range of value of important place plate impact sound.Therefore, tabular floor framing of the present invention, does not adopt that damper etc. is special to be formed, and therefore can be realized lightweight and be improved the sound-proofing of counterweight floor impact sound by formation at a low price.Especially, tabular floor framing of the present invention, constructs by the plate only consisting of plane materiel, realize the good rigidity of performance, the effect of light weight, and performance improves the effect of the sound-proofing of tabular floor framing.

In addition, an eigentone of alleged body vibration system, decides according to represented above-mentioned formula such as the size by each vibrational system, physical characteristic, cross section property values herein.

According to the tabular floor framing above-mentioned (2) ~ (9) Suo Shu, use with the character of plate, the supporting location of crossarm member, the corresponding formula of the fixing means based on fixed part.And, the length dimension of upper plane materiel and lower plane materiel and width dimensions, predetermined distance, length dimension, width dimensions and the thickness of slab of core and at least one in the configuration space between each core are adjusted into an eigentone f of body vibration system ₁~ f ₈below the above 45Hz of 15Hz.The good tabular floor framing of sound-proofing of a kind of counterweight floor impact sound can be more effectively provided thus.

According to the tabular floor framing above-mentioned (10) ~ (13) Suo Shu, use with the character of plate, the supporting location of crossarm member, the corresponding formula of the fixing means based on fixed part.And, the length dimension of upper plane materiel and lower plane materiel and width dimensions, predetermined distance, length dimension, width dimensions and the thickness of slab of core and at least one in the configuration space between each core are adjusted into an eigentone f of partial vibration system ₉~ f ₁₂below the above 20000Hz of 707Hz.The good tabular floor framing of sound-proofing of a kind of counterweight floor impact sound can be provided thus, more effectively.

According to the tabular floor framing above-mentioned (14) Suo Shu, although with the mass M of tabular floor framing integral body in the past _allfor same degree and whole bending stiffness EI _allsignificantly reduce, but can access and equal or its above sound-proofing in the past.And, can also reduce the thickness of tabular floor framing.In addition,, realizing when of the present invention, can suppress mass M _allwith respect to exceedingly increasing in order to make an eigentone f become 45Hz minimum mass above and that need.Thus, can realize as far as possible the light-weighted while, obtain the good effect of sound-proofing.

In this tabular floor framing, do not make weight excessively increase and just can improve sound-proofing, therefore can provide a kind of light weight and the good tabular floor framing of sound-proofing.So, tabular floor framing light weight is corresponding with making, the quantity that can cut down the structural members such as post, beam, stake, basis.Thus, lightweight and the cost cutting of whole building can be realized, and reasonable and economic structure design can be carried out.In addition, by making tabular floor framing attenuation, can reduce depth of building, and can realize the reduction of the use amount of interior material, external decorative material.

According to the tabular floor framing above-mentioned (15) Suo Shu, core is that planar portions, rake and lower flat portion form continuously according to this order above.Thus, in the situation that be predetermined distance by the spatial separation between upper plane materiel and lower plane materiel, do not use a plurality of cores, for example by by sheet material is crooked just can the compartment.Thus, by simple formation, just can provide a kind of sound-proofing good tabular floor framing.

Tabular floor framing according to above-mentioned (16) Suo Shu possesses sound absorption material in space, can more effectively improve sound-proofing thus.

According to the tabular floor framing above-mentioned (17) Suo Shu, by filling sucting sound material in space, can make an eigentone of partial vibration system become below the above 20000Hz of 707Hz.Thus, do not need the size of adjustment member vibrational system, therefore adjust the size of body vibration system.Therefore,, by more simply adjusting, just can improve the sound-proofing of counterweight floor impact sound.In addition, the tabular floor framing of a mode of the present invention is not adopt the special formations such as damper, so can improve by formation at a low price the sound-proofing of counterweight floor impact sound.Especially, by the plate only being formed by plane materiel, construct, realize the good rigidity of performance, the effect of light weight, and performance improves this effect of sound-proofing of tabular floor framing.

Tabular floor framing according to above-mentioned (18) Suo Shu, by arranging a plurality of plate component parts, can form tabular floor framing.Thus, by simple formation, just can provide a kind of sound-proofing good tabular floor framing.

According to the building construction above-mentioned (19) Suo Shu, by possessing above-mentioned tabular floor framing, can bring into play good sound-proofing thus.

Accompanying drawing explanation

Figure 1A means the stereogram of the state before the tabular floor framing of first embodiment of the invention is set on crossarm member.

Figure 1B means the lateral view of the state after this tabular floor framing is set on crossarm member.

Fig. 2 A is the stereogram of this tabular floor framing.

Fig. 2 B is that the master of this tabular floor framing looks sectional view.

Fig. 3 A is the stereogram of having applied the house of this tabular floor framing.

Fig. 3 B is applied to the stereogram in the situation of steel work office building by this tabular floor framing.

Fig. 4 A means in the past and the curve map of the result of the test of the important place plate impact sound test of tabular floor framing of the present invention, and transverse axis is frequency, and the longitudinal axis is sound pressure level.

Fig. 4 B means the curve map of the result of the test that the important place plate impact sound of the tabular floor framing of first embodiment of the invention is tested, and transverse axis is frequency, and the longitudinal axis is sound pressure level.

Fig. 5 A be by this tabular floor framing modelling illustraton of model.

Fig. 5 B be by this tabular floor framing modelling illustraton of model.

Fig. 5 C be by this tabular floor framing modelling illustraton of model.

Fig. 6 A means the stereogram of the state before supporting that by four limits this tabular floor framing is set on crossarm member.

Fig. 6 B means the lateral view that has set this tabular floor framing state afterwards.

Fig. 6 C means the front view that has set this tabular floor framing state afterwards.

Fig. 7 A is the lateral view for the fringe conditions of body vibration system is described.

Fig. 7 B is the lateral view for other fringe conditionss of body vibration system are described.

Fig. 7 C is the lateral view for other fringe conditionss of body vibration system are described.

Fig. 8 A is that the master that the fringe conditions for the partial vibration system to the tabular floor framing of the first embodiment describes looks sectional view.

Fig. 8 B is that the master that other fringe conditionss for the partial vibration system to the tabular floor framing of the first embodiment describe looks sectional view.

Fig. 9 A is the pattern stereogram for the cross section that should consider when determining an eigentone of body vibration system is described.

Fig. 9 B is the pattern stereogram for the cross section that should consider when determining an eigentone of body vibration system is described.

Fig. 9 C is the pattern stereogram for the cross section that should consider when determining an eigentone of body vibration system is described.

Fig. 9 D is for three-dimensional pattern stereogram is carried out in the cross section that should consider when determining an eigentone of body vibration system.

Figure 10 A is the stereogram of the tabular floor framing of the second embodiment.

Figure 10 B is that the master of this tabular floor framing looks sectional view.

Figure 11 A be by this tabular floor framing modelling illustraton of model.

Figure 11 B be by this tabular floor framing modelling illustraton of model.

Figure 11 C be by this tabular floor framing modelling illustraton of model.

Figure 12 A is that the master that the fringe conditions for the partial vibration system to this tabular floor framing describes looks sectional view.

Figure 12 B is that the master that other fringe conditionss for the partial vibration system to this tabular floor framing describe looks sectional view.

Figure 13 A is the stereogram of the tabular floor framing of the 3rd embodiment.

Figure 13 B is the front view of this sheet structure.

Figure 13 C is that the master of this tabular floor framing looks sectional view.

Figure 14 A is the portions cut stereogram of the tabular floor framing of the 4th embodiment.

Figure 14 B is the sectional view of this tabular floor framing.

Figure 15 means the curve map of the result of the test of important place plate impact sound test, and transverse axis is frequency, and the longitudinal axis is sound pressure level.

Figure 16 A means the stereogram of formation of the tabular floor framing of prior art.

Figure 16 B is that the master of this tabular floor framing looks sectional view.

Figure 17 is the figure for the quality of the quality of tabular floor framing integral body, bending stiffness and upper plane materiel etc., relation between bending stiffness are described.

Figure 18 A means the stereogram of the state before the tabular floor framing of the 5th embodiment is set on a plurality of crossarm members.

Figure 18 B is the sectional view of this tabular floor framing.

Figure 19 A means the stereogram of formation of the tabular floor framing of the 5th embodiment.

Figure 19 B is that the master of this tabular floor framing looks sectional view.

Figure 20 A means the stereogram of formation of the tabular floor framing of the 6th embodiment.

Figure 20 B is that the master of this tabular floor framing looks sectional view.

Figure 21 A means the stereogram of formation of the tabular floor framing of the 7th embodiment.

Figure 21 B means the lateral view of the formation of the plate component parts that forms this tabular floor framing.

Figure 21 C is that the master of this tabular floor framing looks sectional view.

Figure 22 A means the portions cut stereogram of formation of the tabular floor framing of the 8th embodiment.

Figure 22 B is that the master of this tabular floor framing looks sectional view.

Figure 23 means the figure of the result of important place plate impact sound test.

The specific embodiment

Below, as for implementing an embodiment of the invention, with reference to accompanying drawing, the applied tabular floor framing in the floor of building construction is elaborated.

First, to having applied the first embodiment of tabular floor framing of the present invention, describe.

Figure 1A means the stereogram of the state before the tabular floor framing 1 of the first embodiment is set on a plurality of crossarm members 71.Figure 1B means the lateral view of the state after having set.In addition, Fig. 2 A is the stereogram of the tabular floor framing 1 of the first embodiment, and Fig. 2 B is its main sectional view of looking.Fig. 3 A represents the tabular floor framing 1 of present embodiment to be applied to the figure in the situation on floor of house (building construction).The tabular floor framing 1 of present embodiment is used on the floor of the floor of one deck of this house and two layers.

In addition, Fig. 3 B is for example applied to the stereogram in the situation of steel work office building of five layers of building by the tabular floor framing 1 of present embodiment.The tabular floor framing 1 of present embodiment is used on the floor of each of this steel work layer.

As shown in Figure 1A, the tabular floor framing 1 of present embodiment is configured to plate body, and this plate body can set by devices spaced apart in one direction and construct on 7 under the floor that a plurality of crossarm members 71 of configuration form substantially in parallel.Crossarm member 71 is in the horizontal direction of building construction, to extend and the framework that sets up.Under this floor consisting of crossarm member 71, constructing 7 is, is equipped with the such floor member of tabular floor framing 1 thereon.In addition, as shown in Figure 6A, by devices spaced apart in one direction and substantially in parallel a plurality of crossarm members 71 of configuration and a plurality of crossarm members 71 of configuring to devices spaced apart in the direction with a direction quadrature in the mode of intersecting with the plurality of crossarm member 71 are combined into lattice-shaped and form sometimes under floor, to construct 7.That is be, that structure is supported on four limits.Tabular floor framing 1 is, such as being fixed and use with respect to each crossarm member 71 by the standing finishes such as Screw, bolt 81, but is known means with respect to the fixing means of this crossarm member 71, without particular limitation of.

Under this floor, constructing 7 crossarm member 71 is, the bar-like member such as square steel, H shaped steel that is used as the framework of building construction, consists of, and such as in the situation that be applied to the building construction of the steel work such as office building, collective residence, can apply crossbeam, girder.In addition,, in the situation that wood such as being applied to separate house is made building, iron and steel house, can apply floor joist, joist, channel, channel support etc.In addition, crossarm member 71 also can be configured to the bar-like member being configured on the plane materiel setting substantially in parallel with vertical guide.In addition, crossarm member 71 also can consist of the upper end of above-mentioned plane materiel.

As shown in Figure 2A and 2B, the tabular floor framing 1 of present embodiment possesses: be spaced from each other predetermined distance and substantially in parallel configuration upper plane materiel 11 and lower plane materiel 13; And will between plane materiel on these 11 and lower plane materiel 12, link and form the core 15 of at least one pair of steel of hollow space (space) 19.This core 15 is, by its upper and lower side and upper plane materiel 11 and lower plane materiel 13, links, and separates thus the hollow space 19 between plane materiel 11 and lower plane materiel 13 on width X, is divided into one or more hollow spaces 19.In the first embodiment, by core 15, on width X, be separated out a plurality of hollow spaces 19.

Upper plane materiel 11 is born the effect as so-called floor lower shoe, also fancy plywood etc. can be installed in the above on the surface of material 11.Lower plane materiel 13 is born the effect as so-called ceiling floor, but the parts of the function with ceiling floor can certainly be in addition set in the lower side space of material 13 below.Upper plane materiel 11 and lower plane materiel 13 consist of the steel sheet material with the such given size of aftermentioned.

As shown in Figure 2 A, core 15, by formations such as the steel plate of the shape of the upper prolongation of the length direction in tabular floor framing 1 (depth direction) Y, shaped steel, consists of a plurality of channel-section steels in the first embodiment.The core 15 being formed by this channel-section steel, possess junction plate 31 and from the upper end of junction plate 31 and lower end to upper flange 33 and the lower flange 35 of roughly orthogonal direction bending.Core 15 is, with respect to upper plane materiel 11 and lower plane materiel 13, makes under the upper flange 33 of its upper and lower side and the state of lower flange 35 butts, by the standing finishes such as screw, rivet (fixed part) 84,85 or welding, fixes connection.In the first embodiment, the upper flange 33 of a core 15 and lower flange 35 are with respect to upper plane materiel 11 or lower plane materiel 13, and on length direction Y, a plurality of positions of devices spaced apart fix by standing finish 84,85.Particularly, at each position, by a standing finish 84,85, upper flange 33 and lower flange 35 are fixedly attached on upper plane materiel 11 or lower plane materiel 13.

As shown in Figure 2 A, the devices spaced apart on the width X of tabular floor framing 1 of the core 15 in the first embodiment disposes a plurality of.Thus, the hollow space 19 being surrounded by upper plane materiel 11, lower plane materiel 13 and core 15 is provided with a plurality of on the width X of tabular floor framing 1.

In addition, as shown in Figure 1A, the tabular floor framing 1 of the first embodiment is, in the mode of the opening of stemming length direction both sides, the end plate 16 being formed by sheet material is installed.This end plate 16 is such as connecting with respect to upper plane materiel 11, lower plane materiel 13 by standing finishes such as welding or screws.In the tabular floor framing 1 of the first embodiment, upper plane materiel 11 is connected with respect to end plate 16 by welding respectively with lower plane materiel 13.This end plate 16 is not necessary formation in the present embodiment.

As shown in Figure 1A, the tabular floor framing 1 of the first embodiment is supported by crossarm member 71.This crossarm member 71 by the body vibration system 21 that forms of plane materiel 11, lower plane materiel 13 and core 15 the upper devices spaced apart of length direction (Y) and along two ends limit 13a, 13b of lower plane materiel 13, extend configuration.End limit 13c, the 13d of the width of lower plane materiel 13 (X) are not supported by crossarm member 71.That is, tabular floor framing 1 is for supporting structure in both sides.In addition, as shown in Figure 1B, the tabular floor framing 1 of the first embodiment is only to descend plane materiel 13 fixing with respect to crossarm member 71 by the standing finishes such as Screw 81.

The core 15 of the first embodiment, except channel-section steel, also can have the shaped steel of various cross sectional shapes by i iron, lipped channel, angle steel, box steel etc., flat steel plate forms.

In the present embodiment, at least one in the interval (predetermined distance) of the length dimension of upper plane materiel 11 and lower plane materiel 13 and width dimensions, upper plane materiel 11 and lower plane materiel 13, length dimension, width dimensions and the thickness of slab of core 15 and the configuration space between each core 15, is adjusted to and meets following (A) and following (B).

(A) eigentone of the body vibration system 21 consisting of upper plane materiel 11, lower plane materiel 13 and core 15 is below the above 45Hz of 15Hz.

(B) eigentone of upper plane materiel 11, lower plane materiel 13 or core 15 partial vibration system 22 is separately below the above 20000Hz of 707Hz.

Herein, to the upper plane materiel 11 shown in Figure 1B, Fig. 2 A and Fig. 2 B and the length dimension l of lower plane materiel 13 ₁, width dimensions l ₂, thickness of slab t ₄, upper plane materiel 11 and lower plane materiel 13 interval (predetermined distance) b ₅, core 15 length dimension a ₅, thickness of slab t ₅, and each core 15 between configuration space b ₄not controlled situation describes as in the past.The in the situation that of this formation, as shown in Figure 4 A, in the range of value of the important place plate impact sound of the tabular floor framing of building construction, surpass 45Hz and in scope lower than 707Hz, produce two crests.Therefore these crests are crests that sound pressure level is higher than acoustical ratings appraisal curve, become the tabular floor framing that sound-proofing has reduced.The crest of lower frequency side is produced by body vibration system (upper plane materiel, lower plane materiel and core), and the crest of high frequency side is produced by partial vibration system (upper plane materiel, lower plane materiel or core).

Therefore, in the present embodiment, by the adjusted size of above-mentioned each parts, be, as shown in the arrow Q1 of Fig. 4 B, the eigentone of body vibration system becomes outside the range of value of important place plate impact sound, and as shown in arrow Q2, the eigentone of partial vibration system becomes outside the range of value of important place plate impact sound.

Then, the size of the upper plane materiel 11 of tabular floor framing 1 more important in present embodiment, lower plane materiel 13 and core 15 is described.In the present embodiment, based on following such idea, adjust the size of upper plane materiel 11, lower plane materiel 13 and core 15.

Fig. 5 A be by tabular floor framing 1 modelling of the first embodiment illustraton of model.In this illustraton of model, upper plane materiel 11 and lower plane materiel 13 are connected by a plurality of cores 15 connecting portions being represented by white circle 17 in the drawings such as channel-section steels.

At people's walking in tabular floor framing 1, object, in the situations such as tabular floor framing 1 falls, due to this reason, a whole and part for tabular floor framing 1 is vibrated in its thickness of slab direction.This vibration is the lower layer side to tabular floor framing 1 via transfer of air.

As the vibration source that becomes tabular floor framing 1 vibrative reason, can enumerate body vibration system 21 and partial vibration system 22 herein.Body vibration system 21 is such as shown in Figure 5A laminar configuration, and this laminar configuration is that upper plane materiel 11, lower plane materiel 13 and core 15 become one and vibrate, and formed by tabular floor framing 1 integral body.Partial vibration system 22 possesses first's vibrational system 23 and the second portion vibrational system 25 of the laminar configuration as shown in Fig. 5 B, Fig. 5 C, this laminar configuration consists of separately upper plane materiel 11, lower plane materiel 13 or the core 15 of the part as tabular floor framing 1, and its two ends are supported on the connecting portion 17 of plane materiel 11 and lower plane materiel 13 and core 15.First's vibrational system 23 consists of upper plane materiel 11 or lower plane materiel 13, and second portion vibrational system 25 consists of core 15.

In addition, sheet structure 10 possesses upper plane materiel 11, lower plane materiel 13 and core 15.

These each vibrational systems are vibrated with the vibration frequency of the eigentone corresponding to separately.Herein, in the present embodiment, the size of each vibrational system is adjusted to, and an eigentone of these each vibrational systems that formula determines according to the rules becomes prescribed limit.Particularly, the size of body vibration system 21 is adjusted to, an eigentone f who determines according to aftermentioned formula (2), (4), (6), (8), (10), (12), (14), (16) ₁~ f ₈become below the above 45Hz of 15Hz, the size of first's vibrational system 23 and second portion vibrational system 25 is adjusted to, an eigentone f who determines according to aftermentioned formula (17) ~ (20) ₉~ f ₁₂more than becoming 707Hz.; the size of body vibration system 21 is adjusted to; the eigentone that formula determines according to the rules becomes below the above 45Hz of 15Hz; the size of first's vibrational system 23 and second portion vibrational system 25 is adjusted to, and the eigentone that formula determines according to the rules becomes below the above 20000Hz of 707Hz.

Making eigentone is that more than 15Hz reason is, when lower than 15Hz, produces and concerning the mankind, is felt as offending unhappy vibration, therefore will be avoided.In addition, vibration frequency more than 20000Hz is the marginal vibration frequency that can feel concerning the mankind, and therefore making higher limit is below 20000Hz.By the ornament materials such as carpet are set, can suppress vibration frequency, so higher limit also can be for below 8000Hz.

In addition, making eigentone is that the following or reason more than 707Hz of 45Hz is following 2 points.The first, surpass 45Hz and be the range of value of important place plate impact sound lower than the scope of the vibration frequency of 707Hz, when be vibration frequency within the scope of this, can produce and concerning the mankind, be felt as offending unhappy vibration, so will be avoided.The second, about the vibration frequency of scope more than 707Hz, by being set, the ornament materials such as carpet can improve with comparalive ease performance.

It is that the lower limit of frequency band of 63Hz is till to make centre frequency be in the scope of higher limit of frequency band of 500Hz that the range of value of important place plate impact sound is present in from making centre frequency.Making centre frequency is the lower limit of the frequency band of 63Hz, even if therefore the higher limit of the frequency band that still the frequency band centre frequency of low one-level is 31.5Hz can calculate by 31.5Hz * √ 2.In addition, making centre frequency is that the higher limit of the frequency band of 500Hz can calculate by 500Hz * √ 2.Based on these, an eigentone that makes each vibrational system is not included in over 45Hz and in frequency lower than the scope of 707Hz.

About the later eigentone of the secondary in the eigentone of each vibrational system, can think that comparing amplitude with an eigentone diminishes, sound emission efficiency is lower with anti-phase vibration for the antinode of the vibration mode of adjacency.Therefore, in the present embodiment, only consider that an eigentone of each vibrational system is adjusted each size.

Then the formula, the adjusted size of each vibrational system in present embodiment being used describes.

The eigentone of the flexural vibrations of the flat non-individual body that each vibrational system is such, obtains according to the physical characteristics such as the thickness equidimension by each vibrational system, young's modulus of elasticity, density and such represented such formula (2), (4), (6), (8), (10), (12), (14), (16) ~ (20) of aftermentioned of cross section property value of second moment of area.Formula in these formula (2) ~ (16) are the formula of obtaining an eigentone of body vibration system 21, according to the deformation characteristic of the relevant fringe conditions in four limits of the Zhou Duan to this body vibration system 21 and its width and length direction, distinguish use.In addition, formula (17) ~ (20) are the formula of obtaining an eigentone of partial vibration system 23,25, according to the fringe conditions that four limits of the Zhou Duan to this partial vibration system 23,25 are relevant, distinguish use.

Said body vibration system 21 herein, according to four limits of the Zhou Duan with respect to this body vibration system 21, only opposed both sides are supported by crossarm member 71 or all classified by crossarm member 71 support in four all limits, the formula of an eigentone of using is different.That is, in Figure 1A, the example of represent in four limits of the Zhou Duan of the sheet structure 10 of vibrational system 21 as a whole, only opposed both sides being supported by crossarm member 71.On the other hand, the example of in Fig. 6 A, represent in four limits of the Zhou Duan of the sheet structure 10 of vibrational system 21 as a whole, four all limits all being supported by crossarm member 71.

In addition, further according to four limits of the Zhou Duan of this body vibration system 21, the support condition based on crossarm member 71 is that pin support or fixing support are classified to body vibration system 21, and the formula of an eigentone of using is different.Pin support is that as shown in Figure 7 A, only the lower plane materiel 13 of sheet structure 10 connects with respect to crossarm member 71 by the standing finishes such as bolt 81.In the situation that pin is supported, at its connecting portion 17, allow to a certain extent the rotation of sheet structure 10.

Fixedly support is, possesses the both sides of upper plane materiel 11 and lower plane materiel 13 are fixed to the fixed part on crossarm member 71.Particularly, example as shown in Figure 7 B, by connecting the standing finishes such as bolt (fixed part) 80 of its upper plane materiel 11 and lower plane materiel 13 with respect to crossarm member 71 connections, restrained in the rotation of its connecting portion 17 sheet structures 10 by sheet structure 10.As other examples of fixing situation about supporting, for example, can enumerate example such shown in Fig. 7 C.This example is, only descends plane materiel 13 to be fixed on crossarm member 71, and possesses other fixed parts that upper plane materiel 11 and miscellaneous part are fixed.In this example, sheet structure 10 has been set continuously on its length direction Y a plurality of after, only the lower plane materiel 13 of each sheet structure 10 is connected with respect to crossarm member 71 by standing finish 81.And, make across the upper plane materiel (miscellaneous part) 11 of the adjacency of the sheet structure 10 adjoining each other plate-shaped member 83 butts each other, and by standing finish (other fixed parts) 82, plane materiel on this 11 be connected with plate-shaped member 83.Thus, in the rotation of connecting portion 17 sheet structures 10, restrained.

Body vibration system 21 has anisotropy or has isotropism according to the deformation characteristic of width X and length direction Y classifies.Said anisotropy refers to herein, the both direction of the quadrature in the face of sheet structure 10, is that width X is different with the deformation characteristic on length direction Y, and isotropism refers to, width X is identical with the deformation characteristic on length direction Y.Particularly, having isotropic sheet structure 10 refers to, on width X and length direction Y, the young's modulus of elasticity of all directions is being made as to Ex, Ey, second moment of area is made as in the situation of Ix, Iy, meets ExIx=EyIy (1) situation of (above-mentioned formula (3), (9), (11) are too); Having anisotropic sheet structure 10 refers to and meets ExIx ≠ EyIy (5) situation of (above-mentioned formula (7), (13), (15) are too).

According to four limits of its week end, the support condition based on miscellaneous parts such as upper plane materiels 11 is that pin support or fixing support are classified to partial vibration system 23,25, and the formula of an eigentone of using is different.As shown in Figure 8 A, pin support possesses: standing finish (the first core fixed part) 84, and at the contact site 17 of core 15 and upper plane materiel 11, fixing upper plane materiel 11 and core 15; And standing finish (the second core fixed part) 85, at the contact site 17 of core 15 and lower plane materiel 13, fixing lower plane materiel 13 and core 15.That is, a core 15, with respect to upper plane materiel 11, lower plane materiel 13, connects by a standing finish 84,85 at each position.In the situation that pin is supported, at its connecting portion 17, allow to a certain extent the rotation of upper plane materiel 11, lower plane materiel 13, core 15.

As shown in Figure 8 B, fixedly support is, at the contact site 17 of core 15 and upper plane materiel 11, possesses a plurality of standing finishes 84, at the contact site 17 of core 15 and lower plane materiel 13, possesses a plurality of standing finishes 85.That is, a core 15, with respect to upper plane materiel 11, lower plane materiel 13, connects by plural standing finish 84,85 at each position.The in the situation that of fixing support, at its connecting portion 17, the rotation of upper plane materiel 11, lower plane materiel 13, core 15 is restrained.

At the sheet structure 10 of vibrational system 21 as a whole, there is isotropism, in the situation that in four limits of its week end, only opposed both sides are supported by pin with respect to crossarm member 71, an eigentone f of this body vibration system 21 ₁meet following formula (2).

f_{1} = \frac{π}{2} \times \sqrt{\frac{E_{1} I_{1}}{ρ_{1} S_{1}}} \times {(\frac{1}{l_{1}})}^{2} . . . (2)

E ₁: the young's modulus of elasticity (N/mm of sheet structure (body vibration system) 10 ²)

I ₁: the second moment of area (mm in the vertical cross section parallel with extending direction of crossarm member 71 ⁴)

ρ ₁: the density (kg/m of sheet structure (body vibration system) 10 ³)

S ₁: the sectional area (mm in the vertical cross section parallel with extending direction of crossarm member 71 ²)

L ₁: the configuration space (mm) of the crossarm member 71 on width or length direction

In the present embodiment, as shown in Figure 1B, l ₁it is the configuration space of the crossarm member 71 that configures along its length.

At the sheet structure 10 of vibrational system 21 as a whole, there is isotropism, in the situation that four limits of its week end are all supported by pin with respect to crossarm member 71, an eigentone f of this body vibration system 21 ₂meet following formula (4).

f_{2} = \frac{π}{2} \times \sqrt{\frac{E_{1} I_{1}}{(1 - v_{1}^{2}) ρ_{1} S_{1}}} \times {{(\frac{1}{l_{1}})}^{2} + {(\frac{1}{l_{2}})}^{2}} . . . (4)

I ₁: sheet structure (body vibration system) second moment of area (mm with cross section length direction quadrature 10 ⁴)

ν ₁: the poisson's ratio of sheet structure (body vibration system) 10

ρ ₁: the density (kg/m of sheet structure (body vibration system) 10 ³)

L ₁: the configuration space of the above-mentioned crossarm member on length direction (mm)

L ₂: the configuration space of the above-mentioned crossarm member on width (mm)

At the sheet structure 10 of vibrational system 21 as a whole, there is anisotropy, in the situation that in four limits of its week end, only opposed both sides are supported by pin with respect to crossarm member 71, an eigentone f of this body vibration system 21 ₃meet following formula (6).

f_{3} = \frac{π}{2} \times \sqrt{\frac{E_{1} I_{1}}{ρ_{1} S_{1}}} \times {(\frac{1}{l_{1}})}^{2} . . . (6)

I ₁: sheet structure (body vibration system) second moment of area (mm with cross section width quadrature 10 ⁴)

ρ ₁: the density (kg/m of sheet structure (body vibration system) 10 ³)

At the sheet structure 10 of vibrational system 21 as a whole, there is anisotropy, in the situation that four limits of its week end are all supported by pin with respect to crossarm member 71, an eigentone f of this body vibration system 21 ₄meet following formula (8).

f_{4} = \frac{π}{2} \times \sqrt{{\frac{D_{x}}{l_{1}^{4}} + \frac{D_{y}}{l_{2}^{4}} + \frac{2}{l_{1}^{2} \times l_{2}^{2}} \times (D_{l} + {2 D}_{xy})} \times \frac{1}{ρ_{1}}} . . . (8)

D_{l} = v_{1} \times \sqrt{D_{x} \times D_{y}} . . . (8 - 1)

D_{xy} = \frac{(1 - v_{1}) \times \sqrt{D_{x} \times D_{y}}}{2} . . . (8 - 2)

D_{x} = \frac{E_{1}}{(1 - v_{1}^{2})} \times \frac{I_{y}}{S_{y}} . . . (8 - 3)

D_{y} = \frac{E_{1}}{(1 - v_{1}^{2})} \times \frac{I_{x}}{S_{x}} . . . (8 - 4)

L ₁: the configuration space (mm) of the crossarm member 71 on length direction

L ₂: the configuration space (mm) of the crossarm member 71 on width

ρ ₁: the density (kg/m of sheet structure (body vibration system) 10 ³)

ν ₁: the poisson's ratio of sheet structure (body vibration system) 10

Ix: sheet structure (body vibration system) second moment of area (mm with cross section width quadrature 10 ⁴)

Iy: sheet structure (body vibration system) second moment of area (mm with cross section length direction quadrature 10 ⁴)

Sx: sheet structure (body vibration system) sectional area (mm with cross section width quadrature 10 ²)

Sy: sheet structure (body vibration system) sectional area (mm with cross section length direction quadrature 10 ²)

At the sheet structure 10 of vibrational system 21 as a whole, have isotropism, in four limits of its week end, only opposed both sides are fixed in situation about supporting with respect to crossarm member 71, an eigentone f of this body vibration system 21 ₅meet following formula (10).In addition, the E in following formula (10) ₁etc. content, with middle record identical of formula (2), therefore omit their explanation.

f_{5} = \frac{{4.73}^{2}}{2 π} \times \sqrt{\frac{E_{1} I_{1}}{ρ_{1} S_{1}}} \times {(\frac{1}{l_{1}})}^{2} . . . (10)

At the sheet structure 10 of vibrational system 21 as a whole, have isotropism, four limits of its week end are all fixed in situation about supporting with respect to crossarm member 71, an eigentone f of this body vibration system 21 ₆meet following formula (12).In addition, the E in following formula (12) ₁etc. content, with middle record identical of formula (4), therefore omit these contents.

f_{6} = \frac{3}{π \times l_{1}^{2} \times l_{2}^{2}} \times \sqrt{2 \times (7 l_{1}^{4} + {4 l}_{1}^{2} l_{2}^{2} + {7 l}_{2}^{4}) \times \frac{E_{1} I_{1}}{(1 - v_{1}^{2}) ρ_{1} S_{1}}} . . . (12)

At the sheet structure 10 of vibrational system 21 as a whole, have anisotropy, in four limits of its week end, only opposed both sides are fixed in situation about supporting with respect to crossarm member 71, an eigentone f of this body vibration system 21 ₇meet following formula (14).In addition, the E in following formula (14) ₁etc. content, with middle record identical of formula (2), therefore omit their explanation.

f_{7} = \frac{{4.73}^{2}}{2 π} \times \sqrt{\frac{E_{1} I_{1}}{ρ_{1} S_{1}}} \times {(\frac{1}{l_{1}})}^{2} . . . (14)

At the sheet structure 10 of vibrational system 21 as a whole, have anisotropy, four limits of its week end are all fixed in situation about supporting with respect to crossarm member 71, an eigentone f of this body vibration system 21 ₈meet following formula (16).In addition, the D in following formula (16) _letc. content, with middle record identical of formula (8), therefore omit their explanation.

f_{8} = \frac{1}{2 π} \times \sqrt{{\frac{504}{l_{1}^{4}} D_{x} + \frac{504}{l_{2}^{4}} D_{y} + \frac{288}{l_{1}^{2} \times l_{2}^{2}} \times (D_{l} + 2 D_{xy})} \times \frac{1}{ρ_{1}}} . . . (16)

In the situation that supported an eigentone f of this first's vibrational system 23 by pin with respect to miscellaneous part (core 15) as four limits of the Zhou Duan of the upper plane materiel 11 of first's vibrational system 23 and a part for lower plane materiel 13 ₉meet following formula (17).

f_{9} = \frac{π}{2} \times \sqrt{\frac{E_{4} {t_{4}}^{2}}{12 ρ_{4} (1 - v_{4}^{2})}} \times {{(\frac{1}{a_{4}})}^{2} + {(\frac{1}{b_{4}})}^{2}} . . . (17)

E ₄: the young's modulus of elasticity (N/mm of upper plane materiel 11 or lower plane materiel 13 ²)

T ₄: the thickness (mm) of upper plane materiel 11 or lower plane materiel 13

ρ ₄: the density (kg/m of upper plane materiel 11 or lower plane materiel 13 ³)

ν ₄: the poisson's ratio of upper plane materiel 11 or lower plane materiel 13

A ₄: the length (mm) of the length direction of upper plane materiel 11 or lower plane materiel 13

B ₄: the interval (configuration space of core 15) between the connecting portion 17 of upper plane materiel 11 or lower plane materiel 13 is (mm)

In the situation that the fringe conditions that is fixed and supports with respect to miscellaneous part (core 15) as four limits of the Zhou Duan of the upper plane materiel 11 of first's vibrational system 23 and a part for lower plane materiel 13, an eigentone f of this first's vibrational system 23 ₁₀meet following formula (18).In addition, the E in following formula (18) ₄etc. content, with middle record identical of formula (17), therefore omit their explanation.

f_{10} = \frac{3}{π \times a_{4}^{2} \times b_{4}^{2}} \times \sqrt{2 \times ({7 a}_{4}^{4} + {4 a}_{4}^{2} b_{4}^{2} + {7 n}_{4}^{4}) \times \frac{E_{4} t_{4}^{2}}{12 ρ_{4} (1 - v_{4}^{2})}} . . . (18)

In the situation that the fringe conditions of being supported by pin with respect to miscellaneous part (core 15) as all or part of four limits of Zhou Duan of the core 15 of second portion vibrational system 25, an eigentone f of this second portion vibrational system 25 ₁₁meet following formula (19).

f_{11} = \frac{π}{2} \times \sqrt{\frac{E_{5} {t_{5}}^{2}}{12 ρ_{5} (1 - v_{5}^{2})}} \times {{(\frac{1}{a_{5}})}^{2} + {(\frac{1}{b_{5}})}^{2}} . . . (19)

E ₅: the young's modulus of elasticity (N/mm of core 15 ²)

T ₅: the thickness (mm) of the thickness of slab direction of core 15

ρ ₅: the density (kg/m of core 15 ³)

ν ₅: the poisson's ratio of core 15

A ₅: the length of the length direction of core 15 (mm)

B ₅: (the interval between upper plane materiel 11 and lower plane materiel 13: predetermined distance) (mm) of the length between the connecting portion 17 of core 15

In the situation that as all or part of four limits of Zhou Duan of the core 15 of second portion vibrational system 25 with respect to miscellaneous part (upper plane materiel 11 or the lower plane materiel 13) support that is fixed, an eigentone f of this second portion vibrational system 25 ₁₂can be represented by following formula (20).In addition, the E in following formula (20) ₅etc. content, with in formula (19), illustrated identical, therefore omit their explanation.

f_{12} = \frac{3}{π \times a_{5}^{2} \times b_{5}^{2}} \times \sqrt{2 \times ({7 a}_{5}^{4} + {4 a}_{5}^{2} b_{5}^{2} + {7 n}_{5}^{4}) \times \frac{E_{5} t_{5}^{2}}{12 ρ_{5} (1 - v_{5}^{2})}} . . . (20)

The tabular floor framing 1 of the first embodiment is, only the opposed both sides at the two ends of the length direction Y of sheet structure 10 are supported by crossarm member 71 pins, and sheet structure 10 has anisotropy.Therefore,, when carrying out the adjusted size of the sheet structure 10 of vibrational system 21 as a whole, use above-mentioned formula (6).In addition, the partial vibration system 23,25 being formed by upper plane materiel 11, lower plane materiel 13, core 15, can think that the support condition of four limits based on miscellaneous part of its week end is pin support, therefore when the adjusted size of the upper plane materiel 11 as partial vibration system 23,25, lower plane materiel 13 and core 15, use formula (17), (19).

In addition, above-mentioned miscellaneous part is, in the above in the situation of material 11, upper plane materiel 11 or the crossarm member 71 of the sheet structure 10 of core 15, adjacency, below in the situation of material 13, being lower plane materiel 13 or the crossarm member 71 of the sheet structure 10 of core 15, adjacency, the in the situation that of core 15, is upper plane materiel 11, lower plane materiel 13, core 15 or crossarm member 71.

First, the situation that body vibration system 21 is adjusted is described.

That is, in order to make according to an eigentone f of the body vibration system 21 of formula (6) decision ₃become in the scope below the above 45Hz of 15Hz, for example, on the basis of keeping intact at the cross sectional shape of sheet structure 10, so that the configuration space of the crossarm member 71 of this sheet structure 10 (length between support sector 27) l ₁the mode of increase and decrease, carries out adjusted size.For example,, at an eigentone f who determines according to formula (6) ₃in situation lower than 15Hz, shorten the length l between this support sector 27 ₁.At an eigentone f ₃surpass in the situation of 45Hz, lengthen the length l between this support sector 27 ₁.In this case, the advantage having is, hardly an eigentone f to first's vibrational system 23 and second portion vibrational system 25 ₉, f ₁₁exert an influence, and only make an eigentone of body vibration system 21 increase and decrease.

In addition, in addition, also can go up by adjusting the thickness t of plane materiel 11, lower plane materiel 13 ₄, core 15 thickness t ₅, core 15 configuration space (length between connecting portion 17) b ₄, interval (predetermined distance) b between upper plane materiel 11 and lower plane materiel 13 ₅, make the sectional area S of sheet structure 10 ₁, second moment of area I ₁increase and decrease.Thus, also can make according to an eigentone f of above-mentioned formula (6) decision ₃become 15Hz ~ 45Hz.

Then, the situation that first's vibrational system 23 is adjusted is described.

In order to make according to an eigentone f of first's vibrational system 23 of formula (17) decision ₉more than 707Hz, for example, on the basis of keeping intact in the length of the width X of sheet structure 10, increase the quantity of core 15 and make the length b between the connecting portion 17 of plane materiel 11, lower plane materiel 13 ₄reduce.In this case, the advantage having is, hardly an eigentone f to body vibration system 21, second portion vibrational system 25 ₃, f ₁₁exert an influence, an eigentone f of Er Jinshi first vibrational system 23 ₉increase.

In addition, in addition, for example, on the basis that also can keep intact in the length of the width X of sheet structure 10, the thickness t 4 of the thickness of slab direction of plane materiel 11, lower plane materiel 13 is increased.Thus, also can make according to an eigentone f of above-mentioned formula (17) decision ₉more than becoming 707Hz.

Then, the situation that second portion vibrational system 25 is adjusted is described.

In order to make according to an eigentone f of the second portion vibrational system 25 of formula (19) decision ₁₁more than 707Hz, for example, make the thickness t of the thickness of slab direction of core 15 ₅increase or make the length b between the connecting portion 17 of core 15 ₅reduce.

The tabular floor framing 1 of the present embodiment so forming, adopt following simple formation: by the adjusted size of each vibrational system, be, an eigentone that becomes the body vibration system 21He first vibrational system 23 of vibration source of tabular floor framing 1 and second portion vibrational system 25 both sides' formula according to the rules and determine, becomes in above-mentioned scope.That is, tabular floor framing 1 is adjusted to, and becomes outside the range of value (surpass 45Hz, lower than the scope of 707Hz) of important place plate impact sound.This means, as shown in Figure 4 B, by adjusting the size of each vibrational system, an eigentone of each vibrational system is changed as arrow Q1, Q2 simultaneously.Therefore, the tabular floor framing 1 of present embodiment, does not adopt the special formations such as damper, by formation at a low price, just can improve the sound-proofing of counterweight floor impact sound.Especially, the tabular floor framing 1 of present embodiment only consists of plane materiel, realize thus the good rigidity of performance, the effect of light weight, and performance improves the effect of the sound-proofing of tabular floor framing 1.

In addition, the building construction of present embodiment is above-mentioned house, possesses above-mentioned tabular floor framing, therefore can bring into play good sound-proofing.

In addition, according to formula (2) etc., asking for an eigentone f of each vibrational system ₁deng time, can be also to calculate second moment of area I ₁basis on, according to by experiment or numerical analysis carry out the deflection w on the position y of moment M that three point bending test obtains and length direction Y, according to following formula (30), calculate.In addition, also can evaluate and calculate according to the pattern analysis result based on experiment or numerical analysis.

E_{1} I_{1} \times \frac{d^{2} w (y)}{{dy}^{2}} = - M . . . (30)

In addition,, in the situation that sheet structure 10 is supported by crossarm member 71 both sides, sheet structure 10 both can be supported by crossarm member 71 both sides at the two ends of length direction Y, also can by crossarm member 71 both sides, be supported at the two ends of width X.

In this case, at sheet structure 10, there is in isotropic situation the S in determining formula (2), formula (10) ₁, I ₁time the cross section considered, according to crossarm member 71 with respect to the position of sheet structure 10 and difference.That is, as shown in Figure 9 A, by crossarm member 71 in the situation that the two ends support plate tectosome 10 of length direction Y, determining S ₁, I ₁time the cross section that should consider, becoming with the extending direction of crossarm member 71 is the parallel vertical cross section P1 of width X.In addition, as shown in Figure 9 B, by crossarm member 71 in the situation that the two ends support plate tectosome 10 of width X, determining S ₁, I ₁time the cross section P that should consider, becoming with the extending direction of crossarm member 71 is the parallel vertical cross section P2 of length direction Y.

In addition, at sheet structure 10, there is in anisotropic situation the S in determining formula (6), formula (14) ₁, I ₁time the cross section considered, according to crossarm member 71, the position with respect to sheet structure 10 does not change.That is, be no matter as shown in Figure 9 C like that by crossarm member 71 in the situation that the two ends support plate tectosome 10 of length direction Y, or as shown in Fig. 9 D by crossarm member 71 in the situation that the two ends support plate tectosome 10 of width X, at decision S ₁, I ₁time the cross section that should consider, all become the cross section P2 with width X quadrature.Its former because, in the situation that thering is anisotropic sheet structure 10, the tendency that existence is less than the second moment of area of the cross section P1 with length direction Y quadrature with the second moment of area of the cross section P2 of width X quadrature, the impact that the performance of cross section P2 produces the sound-proofing of body vibration system is larger, need to become the object of consideration.

Then, to having applied the second embodiment of tabular floor framing of the present invention, describe.In addition, for the inscape identical with above-mentioned inscape, give identical symbol, thus the description thereof will be omitted below.

Figure 10 A is the stereogram of the tabular floor framing 1 of the second embodiment, and Figure 10 B is its main sectional view of looking.

The tabular floor framing 1 of the second embodiment is compared with the tabular floor framing 1 of the first embodiment, and the formation of core is different.In the tabular floor framing 20 of the second embodiment, core 15 consists of flap.

Core 15 has: with the upper flange 43 (upper planar portions) of upper plane materiel 11 with plane contact; With the lower flange (lower flat portion) 45 of lower plane materiel 13 with plane contact; And the junction plate (rake) 41 tilting with respect to upper plane materiel 11 and lower plane materiel 13.And upper flange 43, junction plate 41 and lower flange 45 form continuously according to this order.

Particularly, the core 15 being formed by this flap is configured to, and the upper flange 43 arranging to approximate horizontal on width X and lower flange 45, via the junction plate 41 arranging obliquely with respect to width X, alternately form and become waveform on width X.The upper flange that is positioned at upper end side 43 of the core 15 being formed by flap is with respect to upper plane materiel 11 butts, the lower flange that is positioned at lower end side 45 of the core 15 being formed by flap is with respect to lower plane materiel 13 butts, and they are fixedly connected with by the standing finishes such as screw, rivet 84,85 or welding etc.Thus, the core 15 being formed by flap, will be divided into a plurality of hollow spaces 19 on width X between upper plane materiel 11 and lower plane materiel 13.

In addition, in the second embodiment, a upper flange of core 15 43, a lower flange 45 are with respect to upper plane materiel 11, lower plane materiel 13, and a plurality of positions of devices spaced apart on length direction Y, fix by standing finish 84,85.Each position of upper flange 43, lower flange 45, fixes connection by a standing finish 84,85 respectively.In addition, the two ends of the width X of the core 15 being formed by flap, with respect to upper flange 43 or lower flange 45 bendings, to become to the roughly U-shaped of the interior side opening of tabular floor framing 1.

Between upper flange 43, lower flange 45 and junction plate 41, angulation α is preferably 45 degree ~ 80 degree.

Figure 11 A ~ Figure 11 C be by tabular floor framing 1 modelling of the second embodiment illustraton of model.In this illustraton of model, upper plane materiel 11 and lower plane materiel 13 are also that core 15 by being formed by the flap connecting portion being represented by white circle 17 is in the drawings connected.

As the vibration source that becomes the tabular floor framing 1 vibrative reason of the second embodiment, can enumerate body vibration system 21, first's vibrational system 23 and second portion vibrational system 25.

Body vibration system 21 is such as shown in Figure 11 A laminar configuration, and this laminar configuration is that upper plane materiel 11, lower plane materiel 13 and core 15 become one and vibrate, and consists of tabular floor framing 1 integral body.First's vibrational system 23 is such as shown in Figure 11 B laminar configuration, this laminar configuration consists of separately the upper plane materiel 11 of the part as tabular floor framing 1, lower plane materiel 13, and its two ends are supported on the connecting portion 17 of plane materiel 11 and lower plane materiel 13 and core 15.Second portion vibrational system 25 is such as shown in Figure 11 C laminar configuration, and this laminar configuration consists of the junction plate 41 of core 15, and its two ends are supported on connecting portion 17.

The tabular floor framing 20 of the second embodiment is also that the size of each vibrational system is adjusted to, and according to an eigentone of these each vibrational systems of afore mentioned rules formula decision, becomes prescribed limit as described above.

Can think that the tabular floor framing 20 of the second embodiment has isotropism herein.Therefore, the tabular floor framing 20 of the second embodiment and the sheet structure 10 of the first embodiment are same, only the opposed both sides at the two ends of the length direction Y of sheet structure 10 are supported by crossarm member 71 pins, when carrying out the adjusted size of the sheet structure 10 of vibrational system 21 as a whole, use above-mentioned formula (2).

In addition, in the situation that the such cross sectional shape of the second embodiment, the support condition of four limits of the Zhou Duan of partial vibration system 23,25 based on miscellaneous parts such as upper plane materiels 11 is that pin support refers to, as shown in Figure 12 A, the upper flange 43 of core 15, a lower flange 45, connect by a standing finish 84,85 at each position.In the situation that pin is supported, at its connecting portion 17, allow to a certain extent the rotation of upper plane materiel 11, lower plane materiel 13, core 15.In addition, fixedly support refers to, as shown in Figure 12 B, a upper flange of core 15 43, a lower flange 4, connect by plural standing finish 84,85 at each position.The in the situation that of fixing support, at its connecting portion 17, the rotation of upper plane materiel 11, lower plane materiel 13, core 15 is restrained.

In the tabular floor framing 20 of the second embodiment, can think that the partial vibration system 23,25 consisting of upper plane materiel 11, lower plane materiel 13, core 15 is, the support condition of four limits of its week end based on miscellaneous part is pin support.Therefore, when the adjusted size of carrying out as upper plane materiel 11, lower plane materiel 13 and the core 15 of partial vibration system 23,25, according to the same main points with having illustrated in the first embodiment, use formula (17), formula (19) to carry out.

In addition, core 15 also can consist of corrugated sheet, in this case, by carrying out as in the present embodiment adjusted size, also can access the desired effect of the present invention.

Then, to having applied the 3rd embodiment of tabular floor framing of the present invention, describe.

Figure 13 A is the stereogram of the tabular floor framing 30 of the 3rd embodiment, and Figure 13 B means the lateral view of the formation of the plate component parts 50 that forms tabular floor framing 30, and Figure 13 C is its main sectional view of looking.

The tabular floor framing 30 of the 3rd embodiment is to form by combining plate component parts 50 such shown in a plurality of Figure 13 B.Plate component parts 50 is to extend in the longitudinal direction, and have: junction plate 51; Upper flange 53, is arranged on one end of this junction plate 51, on width, extends; And lower flange 55, be arranged on the other end of junction plate 51, to the direction contrary with upper flange 53, extend.That is, upper flange 53 and lower flange 55 be, with respect to junction plate 51, roughly in vertical, extending, and crooked and arrange to the rightabout width X from the upper and lower side of junction plate 51.Thus, the cross sectional shape of plate component parts 50 is configured to roughly Z-shaped shape.This plate component parts 50 is by carrying out bending machining, roll forming, hot-pressed etc. forming to steel plate.

As shown in Figure 13 A, Figure 13 C, this plate component parts 50 has identical state of orientation and configures, to form respectively roughly same plane by upper flange 53 and lower flange 55.; tabular floor framing 30 is; with upper flange 53 and lower flange 54, form respectively conplane mode; on width, adjacency is arranged; in abutting connection with a plurality of upper flanges 53 of arranging, form the upper plane materiel 11 shown in the first embodiments; in abutting connection with a plurality of lower flanges 55 of arranging, form the lower plane materiel 13 shown in the first embodiments, junction plate 51 is core 15.Thus, form the tabular floor framing 30 of the 3rd embodiment.The leading section 53a of the upper flange 53 of plate component parts 50 is with the base end part 53b of the upper flange 53 of other plate component parts 50 of adjacency, fixing by welding, mechanical engagement etc.And, the leading section 55a of the lower flange 55 of plate component parts 50 is with the base end part 55b of the lower flange 55 of other plate component parts 50 of adjacency, fixing by welding, mechanical engagement etc.Thus, the plate component parts 50 of adjacency is interfixed.

So, the sheet structure 30 consisting of a plurality of plate component parts 50 is, by upper flange 53, the lower flange upper plane materiel 11 of 55 formation and the lower plane materiel 13 of a plurality of plate component parts 50, by the junction plate 51 formation cores 15 of each plate component parts 50.In other words, the sheet structure 30 of the 3rd embodiment is, by a plurality of plate component parts 50, is configured to tectosome, and this tectosome possesses: be spaced from each other predetermined distance and upper plane materiel 11 and the lower plane materiel 13 of configuration substantially in parallel; With and the core 15 that is connected with upper plane materiel 11 and lower plane materiel 13 of upper and lower side.

The tabular floor framing 30 of the 3rd embodiment is also that the size of each vibrational system is adjusted to, and according to an eigentone of each vibrational system of afore mentioned rules formula decision, becomes afore mentioned rules scope.

The tabular floor framing 30 of the 3rd embodiment is configured to, and the tabular floor framing 1 of its shape and the first embodiment is almost identical, can think that its vibration source is identical with the tabular floor framing 1 of the first embodiment.Therefore, the adjusted size of the tabular floor framing 30 of the 3rd embodiment, similarly carries out with the adjusted size of the tabular floor framing 1 of the first embodiment.

In addition, in the situation that structure of tabular floor framing 30 of the 3rd embodiment, core 15 can not be connected by a plurality of standing finishes 81 at each position with respect to upper plane materiel 11, lower plane materiel 13, therefore the partial vibration system 23,25 being formed by upper plane materiel 11, lower plane materiel 13, core 15, the condition of supporting based on miscellaneous part as four limits of its week end, can only obtain pin support.

In addition, the junction plate 51 of plate component parts 50, is not limited to generally perpendicularly and arranges, and also can tiltedly arrange in width X updip.In this case, as the tabular floor framing 1 of the second embodiment, sheet structure 10 is about the deformation characteristic of its width X and length direction Y and while having isotropism, the adjusted size of the adjusted size of the tabular floor framing 30 of the 3rd embodiment and the tabular floor framing 20 of the second embodiment is similarly carried out.

Then, to having applied the 4th embodiment of tabular floor framing of the present invention, describe.Figure 14 A is the portions cut stereogram of the tabular floor framing 40 of the 4th embodiment, and Figure 14 B is that the master of this tabular floor framing 40 looks sectional view.

The tabular floor framing 40 of the 4th embodiment is different from the tabular floor framing 1 of the first embodiment, only at the two ends of the width X of tabular floor framing 1, is provided with the core 15 consisting of channel-section steel.By this core 15, between upper plane materiel 11 and lower plane materiel 13, be separated into a hollow space 19.In addition, the core 15 at the two ends of width X is respectively with symmetrical state of orientation setting.

In addition, tabular floor framing 40 further possesses the sound absorption material 61 being filled in hollow space 19.This sound absorption material 61 is such as consisting of concrete based materials such as the foamed materials such as the fibrous materials such as asbestos, glass wool, urethane foam, light concrete, foam concrete etc.61 pairs of this sound absorption materials by the vibration that produces in any partial vibration system forming 23,25 of plane materiel 11, lower plane materiel 13 and core 15 absorb sound, make thus an eigentone as measured value of partial vibration system 23,25, the range of value that is varied to the floor impact sound of attaching most importance to is outer, be the frequency of high frequency band more than 707Hz.By for example being filled, this sound absorption material 61 expiring in hollow space 19, while improving thus the sound-proofing of tabular floor framing 1 counterweight floor impact sound, therefore do not need to carry out the adjusted size of partial vibration system 23,25, be only conceived to body vibration system 21 and carry out adjusted size.

In addition, tabular floor framing 40 is, in the mode of the opening of stemming length direction both sides, the end plate 16 consisting of sheet material is installed, to sound absorption material 61 can be filled in hollow space 19.

The tabular floor framing 40 of the 4th embodiment is that the size of body vibration system 21 is adjusted to, and only according to an eigentone of the body vibration system 21 of afore mentioned rules formula decision, becomes prescribed limit as described above.

Herein, in the situation that sound absorption material 61 is filled in hollow space 19, when the density of upper plane materiel 11, lower plane materiel 13, core 15, sound absorption material 61 is identical, about the deformation characteristic of its width X and length direction Y, tabular floor framing 40 has isotropism.Thus, the adjusted size of the body vibration system 21 of the tabular floor framing 40 of the 4th embodiment, according to above-mentioned formula (2), (4), (10), (12).In this case, when considering the young's modulus of elasticity etc. of tabular floor framing 40, except the young's modulus of elasticity of upper plane materiel 11 grades etc., also to consider the young's modulus of elasticity of sound absorption material 61 etc.

The tabular floor framing 40 of the 4th embodiment is, at the interior filling sucting sound material 61 of hollow space 19, and only adjusted the size of body vibration system 21, so that an eigentone as measured value of the eigentone that becomes that the formula according to the rules of body vibration system 21 of the vibration source of tabular floor framing 1 determines and partial vibration system 23,25 becomes outside the range of value of important place plate impact sound.That is,, by simple formation, improved the sound-proofing of tabular floor framing 40.This means, as shown in Figure 4 B, by the size of body vibration system 21 is adjusted and filling sucting sound material 61, make thus an eigentone of each vibrational system as arrow Q1, Q2, change simultaneously.Therefore,, by the tabular floor framing 40 of the 4th embodiment, also can access that effect having illustrated in the first embodiment.

In addition, in the situation that tabular floor framing 1 possesses sound absorption material 61, can certainly carry out the adjusted size of partial vibration system 23,25.In addition,, in the situation that tabular floor framing 1 possesses sound absorption material 61, can certainly be provided with three above cores 15, so that a plurality of hollow spaces 19 of width will be divided between upper plane materiel 11 and lower plane materiel 13.

In addition, sound absorption material 61 preferably consists of urethane foam, in this case, by the sound absorption material 61 being formed by urethane foam, can access intensity, rigidity with core 15 same degree.Therefore, the number of needed core 15 can be reduced, the reduction of the manufacturing cost of tabular floor framing 40 can be realized.

In addition, when carrying out the adjusted size of body vibration system 21 of sheet structure 40 according to formula (2), formula (6), in the situation that young's modulus of elasticity separately of material 11, lower plane materiel 13, core 15, sound absorption material 61, density etc. are different in the above, formula (2), formula (6) (eigentone f ₁, f ₃) by following such formula (31) (eigentone f ₁₃) represent.Thus, to meet the mode of following formula (31), carry out the adjusted size of each parts.Herein, the n of following formula (31) is represented by a, b, c, d, E _a1, E _b1, E _c1, E _d1the young's modulus of elasticity that means respectively plane materiel 11, lower plane materiel 13, core 15, sound absorption material 61, other I _a1, ρ _a1, S _a1deng also meaning respectively upper plane materiel 11, lower plane materiel 13, core 15, the second moment of area of sound absorption material 61, density, sectional area.

f_{13} = \frac{π}{2} \times \sqrt{\underset{n}{Σ} \frac{E_{n 1} I_{n 1}}{ρ_{n 1} S_{n 1}}} \times {(\frac{1}{l_{1}})}^{2} . . . (31)

In addition the size l having illustrated in formula (2), (4), (6), (8), (10), (12), (14), formula (16) ~ formula (20), ₁, l ₂, t ₄, a ₄, b ₄, t ₅, a ₅, b ₅, in illustraton of model, become the size of scope such shown in Fig. 5 A ~ Fig. 5 C, Figure 11 A ~ Figure 11 C.Size l in these illustratons of model ₁, l ₂, t ₄, t ₅, a ₅, b ₄, b ₅, in actual embodiment, be equivalent to respectively the L shown in Figure 1B, Fig. 6 A ~ Fig. 6 C, Fig. 8 A and Fig. 8 B, Figure 12 A and Figure 12 B ₁, L ₂, T ₄, T ₅, A ₅, B ₄, B ₅.In addition the size a about upper plane materiel 11 in illustraton of model, ₄be equivalent to the A shown in Figure 1B ₄, the size a about lower plane materiel 13 in illustraton of model ₄be equivalent to the L shown in Figure 1B ₁.

In addition the thickness t of such sheet structure 10 shown in Fig. 8 A and Fig. 8 B, Figure 12 A and Figure 12 B, ₁, upper plane materiel 11, lower plane materiel 13 and core 15 thickness t ₄, t ₅be set to, the eigentone determining according to afore mentioned rules formula becomes prescribed limit, and can not damage intensity, the practicably enforcement of economy ground.In addition, for t ₁, be preferably set to below the above 200mm of 50mm, for t ₄and t ₅, be preferably set to the above 10mm of 0.8mm.

In addition, upper plane materiel 11 and lower plane materiel 13 consist of the sheet material of steel, but are not limited to this.

Embodiment 1

In embodiment 1, sheet structure 10 for 7 kinds of cross section performances such shown in following table 1-1, table 1-2 and table 2-1, table 2-2, its size has been carried out under the condition of various variations, to confirming according to its eigentone of the decisions such as above-mentioned formula (2) of the eigentone of each vibrational system of expression.

［ table 1-1 ］

［ table 1-2 ］

［ table 2-1 ］

［ table 2-2 ］

The sheet structure 10 using in test No.1 ~ 43 is that young's modulus of elasticity is 205,000 (N/mm ²), density is 7850 (kg/m ³), poisson's ratio is 0.30.In the hurdle of " support condition " of showing 1-1, table 1-2 and table 2-1, table 2-2, the support condition of body vibration system 21 based on crossarm member 71 is, in the situation that only the two ends of length direction are supported by crossarm member 71 pins, be recited as " both sides-pin ", in the situation that the two ends of length direction and the two ends of width are supported by crossarm member 71 pins, be recited as " four limits-pin ", in the situation that the two ends of length direction and the two ends of width are by the fixing support of crossarm member 71, be recited as " four limits-fixing ".In addition, in the hurdle of " support condition " of showing 1-1, table 1-2 and table 2-1, table 2-2, the support condition of partial vibration system 23,25 based on miscellaneous part be, is recited as " pin " in the situation that being supported by pin, is recited as " fixing " support in the situation that being fixed.

When asking for the eigentone of body vibration system 21, in test No.1 ~ 14, according to above-mentioned formula (6), ask for, in test No.15 ~ 21, according to above-mentioned formula (2), ask for, in test No.22 ~ 28, according to above-mentioned formula (4), ask for, in test No.29 ~ 33, according to above-mentioned formula (12), ask for, in test No.34 ~ 38, according to above-mentioned formula (8), ask for, in test No.39 ~ 43, according to above-mentioned formula (16), ask for.When asking for the eigentone of first's vibrational system 23, in testing No.1 ~ 28, testing No.34 ~ 38, according to above-mentioned formula (17), ask for, in testing No.29 ~ 33, testing No.39 ~ 43, according to above-mentioned formula (18), ask for.When asking for the eigentone of second portion vibrational system 25, in testing No.1 ~ 28, testing No.34 ~ 38, according to above-mentioned formula (19), ask for, in testing No.29 ~ 33, testing No.39 ~ 43, according to above-mentioned formula (20), ask for.

In test No.1 ~ 5,8 ~ 12, each group of 15 ~ 19, mainly adjusted the length l between the support sector of length direction of sheet structure 10 ₁.In addition,, in test No.22 ~ 26, each group of 29 ~ 43, mainly adjusted the length l between the support sector of length direction of sheet structure 10 ₁, width support sector between length l ₂.As can be grasped by these comparison, can confirm following situation: by the length l between the support sector of the length direction of sheet structure 10 ₁, width support sector between length l ₂adjust, an eigentone of Bu Shi first vibrational system 23, second portion vibrational system 25 changes significantly thus, just can make an eigentone variation of body vibration system 21 become desired scope.

In test No.1,6,7, test No.8,13,14, test No.15,20,21, test No.22,27, each group of 28, mainly adjusted the length b between the connecting portion 17 of first's vibrational system 23 ₄.As can be grasped by these comparison, can confirm following situation: by the length b between the connecting portion 17 to first's vibrational system 23 ₄adjust, do not make an eigentone of body vibration system 21, second portion vibrational system 25 change significantly, just can make an eigentone variation of first's vibrational system 23 become desired scope.

By embodiment 1, confirmed following situation: by carrying out the adjusted size of body vibration system 21, first's vibrational system 23 etc., can access according to an eigentone of the body vibration system 21 of the decisions such as formula (2) and be below the above 45Hz of 15Hz, according to first's vibrational systems 23 of decision such as formula (17) and an eigentone of second portion vibrational system 25, be tabular floor framing 1 more than 707Hz.

In addition, the underscore of the numerical value of an eigentone of table 1-1, table 1-2 and table 2-1, table 2-2, represents outside the scope of present embodiment.

Embodiment 2

In embodiment 2, by using the tabular floor framing of 2 kinds of cross section performances such shown in following table 3 ~ table 5, according to JIS A 1418-2, carry out practically important place plate impact sound test, and investigation is for the sound pressure level of each frequency, confirms thus effect of the present invention.

［ table 3 ］

［ table 4 ］

［ table 5 ］

In this test, use the tabular floor framing 100 as a comparative example of the structure as shown in Figure 16 A and Figure 16 B, and the tabular floor framing 1 as the inventive example of such structure as shown in Figure 10A and 10B.

Tabular floor framing 100 shown in Figure 16 A and Figure 16 B possesses: the upper plane materiel 111 and the lower plane materiel 113 that separate the steel of predetermined distance configuration; And the core 115 that is configured in the steel between plane materiel 111 and lower plane materiel 113.This core 115 is, by its upper and lower side, is connected with upper plane materiel 111 and lower plane materiel 113, will between upper plane materiel 111 and lower plane materiel 113, separate thus, and be divided into a plurality of hollow spaces 119 on width X.

Tabular floor framing 100 is as a comparative example of a size of, and making the thickness of tabular floor framing 100 integral body is 175mm, makes the 300mm that is spaced apart between mutually adjacent core 115.In addition, as the tabular floor framing 1 of the inventive example, be of a size of, make the thickness T of sheet structure 10 ₁for 60mm, making the length between the support sector 27 of length direction Y is 3,000mm, and the junction plate 41 that makes mutually adjacent core 15 is spaced apart 120mm on width X, and making junction plate 41 is 54 ° to the tilt angle alpha of width X.In addition under the condition of supporting on the both sides of only two ends of the length direction of sheet structure 10 being supported by crossarm member 71,, test.

According to table 3, the eigentone of the body vibration system of the inventive example is 21Hz, and the eigentone of comparative example is 72Hz.That is, in the situation that adjusted the size of each parts as the inventive example, the eigentone of body vibration system becomes in the scope below the above 45Hz of 15Hz, so sound-proofing improves.In addition, according to table 4, the eigentone of first's vibrational system of the inventive example is 2701Hz, and the eigentone of comparative example is 176Hz.In addition, according to table 5, the eigentone of the second portion vibrational system of the inventive example is 4104Hz, and the eigentone of comparative example is 283Hz.Therefore, in the situation that adjusted the size of each parts as the inventive example, the eigentone of partial vibration system becomes in the scope below the above 200000Hz of 707Hz, so sound-proofing improves.

And, according to the result shown in Figure 15, an eigentone of the body vibration system as measured value of observing in the frequency band of 63Hz in comparative example, by the application of present embodiment, to the direction shown in arrow P 1, shift, in comparative example at the frequency band of 125Hz, an eigentone of the partial vibration system as measured value of observing in the frequency band of 250Hz, by the application of present embodiment, to the direction shown in arrow P 2 and P3, shift, its result, has confirmed the situation that the sound pressure level in the frequency band of important place plate impact sound reduces.That is, do not produce the crest of sound pressure level in the range of value of important place plate impact sound (surpass 45Hz, lower than the scope of 707Hz), therefore known is the good tabular floor framing of sound-proofing.

Then, on the basis of the tabular floor framing of the first ~ four embodiment, to having considered that the tabular floor framing of quality and rigidity describes.

The inventor is to body vibration system 21 eigentone f ₁~ f ₈become below the above 45Hz of 15Hz and an eigentone f of partial vibration system 22 ₉~ f ₁₂the size that becomes the following such tabular floor framing of the above 20000Hz of 707Hz is investigated.On the basis of investigating, example as shown in Figure 17, except the mass M of tabular floor framing 70 integral body _all(kg/m ²) and bending stiffness EI _all(Nm2 ⁾in addition, also by the mass M of the upper plane materiel 11 relative with these and lower plane materiel 13 _f(kg/m ²) and bending stiffness EI _f(Nm ²) and the mass M of core 15 _w(kg/m ²) and bending stiffness EI _w(Nm ²) distinguish and investigate.In addition, the mass M of said tabular floor framing 1 integral body herein _alland bending stiffness EI _all, mean the mass M of upper plane materiel 11, lower plane materiel 13 and core 15 _f, M _wthe value having added up to and by their bending stiffness EI _f, EI _wthe value having added up to.In addition, said bending stiffness herein, means the bending stiffness with the cross section of the length direction quadrature of tabular floor framing 70.

, the tabular floor framing 70 of the 6th embodiment shown in Figure 17 is illustrated as an example herein, but in any situation of the tabular floor framing 60,80,90 of the 5th, the 7th, the 8th embodiment described later, is all same.

Following table 6, table 7-1,7-2 mean quality while making the size of tabular floor framing 60 carry out various variation and the table of the relation between bending stiffness, each routine sound damping etc.The channel-section steel of recording in the hurdle of the structure of table 1, refers to the tabular floor framing 60 of the cross sectional shape as shown in Figure 19 A and Figure 19 B.With the flap of recording in hurdle, refer to the tabular floor framing 70 of cross sectional shape as shown in Figure 20.Tabular floor framing 60 and tabular floor framing 70 cross sectional shape separately, schematically represent in the bottom of table.In addition the support span l in table 6, the crossarm member 71 of supporting as shown in Figure 18 B, to tabular floor framing 60 and the interval between the support sector 27 based on standing finish 81, welding etc. between tabular floor framing 60.Floor thickness h is the thickness of tabular floor framing 70 integral body as shown in Figure 17.In addition, the length A of table 6, is the length of the contact site 61 that contacts with upper plane materiel of core 15 as shown in table 6 earth's surface that bottom is illustrated, tabular floor framing 60, and interval B is the interval of the contact site 61 of adjacency.Quality in table 7-1,7-2 or the influence degree of bending stiffness are the mass M of upper plane materiel 11 and lower plane materiel 13 _f, bending stiffness EI _f, core 15 mass M _w, bending stiffness EI _wmass M with respect to tabular floor framing 60 integral body _allor bending stiffness EI _allaccording to the ratio of percentage.

［ table 6 ］

［ table 7-1 ］

［ table 7-2 ］

In each example, in order to evaluate its sound damping, and the impedance Z of tabular floor framing 60, an eigentone f have been obtained ₂₀, acoustical ratings Lh.According to following formula (41), obtain impedance Z.

Z=8×(M _all×EI _all) ^1/2···(41)

In addition an eigentone f, ₂₀meet following formula (42).

f ₂₀=(π/2)×(EI _all/M _all) ^1/2×(1/l) ²···(42)

In addition, the calculated value of acoustical ratings Lh is obtained according to following formula (43).

Lh=A-10log ₁₀(Z/8) ²···(43)

Herein, when asking for the calculated value of acoustical ratings Lh, in all examples of table 6, table 7-1,7-2, condition is: the intrinsic acoustic resistance of the effective radiating area of deck construction, air, the sound emission coefficient of deck construction, the acoustical absorptivity in space, lower chamber, the dynamic characteristic correction value of noise meter, impact force virtual value are identical, and the constant A of formula (43) is 147.1.In addition, by the important place plate impact sound carrying out according to JIS A 1418-2, test, obtain the measured value of acoustical ratings Lh.

In addition, in each example, the lightweight effect of bringing in order to evaluate the application of invention, and obtain the minimum mass of tabular floor framing 60 as following and with respect to the mass ratio of this minimum mass.Minimum mass means in order to make to have an eigentone f of the deck construction of certain impedance Z ₂₀become the following and quality that needs of 15 above 45Hz, for each example, by the bending stiffness EI to tabular floor framing 60 integral body _all, mass M _allfor the formula (41) of variable and the simultaneous equations of formula (42) solve, obtain thus.In addition, for each example, by the mass M of tabular floor framing 60 integral body _alldivided by obtained minimum mass, and obtain the mass ratio with respect to minimum mass.

No.1, No.2 by as a comparative example and as the comparison of the No.8 of example, can confirm following situation: at an eigentone f ₂₀surpass in the situation of 45Hz, compare with the acoustical ratings Lh of calculated value as based on formula (43), as the acoustical ratings Lh of measured value, there is the tendency uprising.In addition, can also confirm following situation: at an eigentone f ₂₀in the situation below 45Hz, as the acoustical ratings Lh of the calculated value based on formula (43), become same degree with the acoustical ratings Lh as measured value.In addition, as the No.6 ~ No.10 except No.8 of example, do not record the acoustical ratings Lh as measured value, but can think according to the result of No.8, as acoustical ratings Lh and the sound damping as measured value of its calculated value, become same degree.

Herein, the inventor obtains following opinion: in the mass M of core 15 _wmass M for tabular floor framing 60 integral body _allinfluence degree be in more than 40% situation, can make an eigentone f is below 45Hz.In addition, in this case, as the comparison of the comparison by No.1 and No.8, No.2 and No.7, can grasping, obtain following opinion: although the mass M of tabular floor framing 60 integral body _allin example and comparative example, be equal extent and with the integrally bending rigidity EI of comparative example _allcompare the integrally bending rigidity EI of example _allreducing significantly, is same degree or the sound-proofing more than it but can access with comparative example in example.Its reason can think that an eigentone f becomes below 45Hz.In addition, in this case, obtain reducing the opinion of the thickness of tabular floor framing 60.Its reason can think to have reduced the bending stiffness EI of tabular floor framing 60 integral body _all.

The inventor, in the mass M of this core 15 _wmass M for tabular floor framing 60 integral body _allthe basis of the more important opinion of influence degree on, in order to obtain realizing as far as possible lightweight and to access with in the past equal or than the tabular floor framing 60 of its good sound-proofing, further carried out studying with keen determination.Its result, obtains following opinion: as long as the size of upper plane materiel 11, lower plane materiel 13 and core 15 is adjusted to, meet the whole of following such formula (21) ~ (23), can access the tabular floor framing 60 of this performance.Herein, the adjustment of the size of each parts and the first embodiment are same.

EI _f≥0.65×EI _all ···(21)

M _w≥0.40×M _all ···(22)

M _w≥EI _w/(k×l ⁴) ···(23)

Formula (21) is for an eigentone f who makes body vibration system ₂₀becoming below the above 45Hz of 15Hz and realize as far as possible lightweight, is necessary condition.Bending stiffness EI when upper plane materiel 11 and lower plane materiel 13 _fbending stiffness EI for tabular floor framing 60 integral body _allinfluence degree lower than 65% time, with respect to tabular floor framing 60 integral body, the shared position of core 15 can become too much.Corresponding therewith, can cause the mass M of tabular floor framing 60 integral body _allexcessively increase, and cause mass M _allwith respect in order to make eigentone f one time ₂₀become the needed minimum mass of 45Hz and excessively increase.

As shown in table 6, table 7-1,7-2, formula (21) is derived according to following content:, and the EI of material 11, lower plane materiel 13 in the above _feI for tabular floor framing 60 integral body _allinfluence degree be in more than 65% situation, with respect to the mass ratio of minimum mass, be below 105%, in this influence degree, lower than 65% in the situation that, with respect to the mass ratio of minimum mass, surpass 105%.

In addition, the left side of formula (21), go up the bending stiffness EI of plane materiel 11 and lower plane materiel 13 _ffor, to its higher limit without particular limitation of.But, at this bending stiffness EI _fbending stiffness EI for tabular floor framing 60 integral body _allinfluence degree surpass in 90% situation, be difficult to realize this structure.Therefore, also can meet following formula (21-1).

0.90×EI _all≥EI _f≥0.65×EI _all ···(21-1)

Formula (22) is in order to make an eigentone f of tabular floor framing 60 ₂₀become the following needed condition of the above 45Hz of 15Hz.Mass M when core 15 _wmass M for tabular floor framing 60 integral body _allinfluence degree lower than 40% time, with respect to tabular floor framing 60 integral body, the shared position of upper plane materiel 11 and lower plane materiel 13 can become too much, be positioned at from the thickness of slab direction center of tabular floor framing 60 away from locational plane materiel 11 and the shared position of lower plane materiel 13 become too much.Corresponding therewith, can cause the bending stiffness EI of tabular floor framing 60 integral body _allexcessively increase an eigentone f ₂₀can surpass 45Hz.

As shown in table 6, table 7-1,7-2, formula (22) is derived according to following content:, and in the mass M of core 15 _wmass M for tabular floor framing 60 integral body _allinfluence degree be in more than 40% situation, an eigentone f of tabular floor framing 60 ₂₀become below 45Hz, in this influence degree lower than 40% in the situation that, an eigentone f of tabular floor framing 60 ₂₀surpass 45Hz.

In addition, the left side of formula (2), be core M _wfor, for its higher limit without particular limitation of.But, at this core M _wmass M for tabular floor framing 60 integral body _allinfluence degree surpass in 90% situation, be difficult to realize this structure.Therefore, also can meet following formula (22-1).

0.90×M _all≥M _w≥0.40×M _all ···(22-1)

Formula (23) is in order to make an eigentone f of tabular floor framing ₂₀become the following needed condition of the above 45Hz of 15Hz.As according to the derivation process of formula described later (23) and can grasping, in the situation that not meeting formula (23), an eigentone f of tabular floor framing ₂₀can surpass 45Hz, and produce covibration, the measured value of acoustical ratings Lh can increase and can not obtain the sound-proofing as target thus.

To obtain formula (23) according to describing.According to above-mentioned formula (42), as for making eigentone f one time ₂₀become the condition below the above 45Hz of 15Hz, can derive following formula (51).

EI _all≤(90/π) ²×l×M _all ···(51)

In addition, according to above-mentioned formula (21), (22), following formula (52), (53) can be derived, according to above-mentioned formula (51), following formula (54) can be derived.

1.86×EI _w≤EI _f ···(52)

M _f≤1.5×M _w ···(53)

EI _w+EI _f≤(90/π) ²×l ⁴×(M _w+M _f) ···(54)

According to above-mentioned formula (52), (53), (54), can derive following formula (55), can derive accordingly following formula (56), it becomes above-mentioned formula (23).

2.86×EI _w≤(90/π) ²×l ⁴×(2.5×M _w)···(55)

M _w≥EI _w/(k×l ⁴)(k=719)···(56)

In addition, meeting on the basis of above-mentioned formula (21), making the thickness of slab of plane materiel 11, lower plane materiel 13 thicken or make the floor thickness h of tabular floor framing 60 to reduce.In addition, meeting on the basis of above-mentioned formula (22) thickness of slab that makes core 15 thickens or make the interval between the core 15 of adjacency on width to narrow down etc. adjusted size with respect to the thickness of slab of upper plane materiel 11, lower plane materiel 13.In addition, meeting on the basis of above-mentioned formula (23), making the thickness of slab of plane materiel 11, lower plane materiel 13, core 15 thicken or make the floor thickness h of tabular floor framing 60 to reduce.

In addition, also can use following formula (61), replace above-mentioned formula (22).It is by the formula that is multiplied by the formula expansion after EIall on the both sides of formula (22) and obtains.

M _w×EI _f+M _w×EI _w≥0.40×M _all ···(61)

The tabular floor framing 60 of the 5th embodiment is also that the size of each vibrational system is adjusted to, and according to an eigentone of these each vibrational systems of afore mentioned rules formula decision, becomes prescribed limit as described above.

According to present embodiment, although with the mass M of tabular floor framing integral body in the past _allfor same degree and whole bending stiffness EI _allsignificantly reduce, but can access and equal or its above sound-proofing in the past.And, can also reduce the thickness of tabular floor framing 60.In addition,, when realizing present embodiment, can not make impedance Z exceedingly increase, and can suppress mass M _allwith respect in order to make eigentone f one time ₂₀become the following needed minimum mass of 45Hz and excessively increase, can access and realize as far as possible the good effect of light-weighted while sound-proofing.That is, improving on the basis of sound-proofing, do not need the excessive increase of weight, therefore can make tabular floor framing 60 maintain light weight.Corresponding therewith, the horizontal external in the time of can reducing earthquake, and the quantity that can cut down the structural members such as post, beam, stake, basis.Thus, the advantage having is can realize lightweight and the cost cutting of whole building, and can carry out reasonable and economic structure design.In addition, by making tabular floor framing 60 attenuation, depth of building can be reduced, the reduction of the use amount of interior material, external decorative material can be realized.

Then, with reference to accompanying drawing to being elaborated for implementing the 5th embodiment of tabular floor framing of the present invention.

Figure 18 A means the stereogram of the state before the tabular floor framing 60 of the 5th embodiment is set on a plurality of crossarm members 71, and Figure 18 B is its main sectional view of looking.

Figure 19 A means the stereogram of formation of the tabular floor framing 60 of the 5th embodiment, its main sectional view of looking of Figure 19 B.

As shown in Figure 17 A, the tabular floor framing 60 of present embodiment is configured to plate body, and this plate body can be provided in by devices spaced apart in one direction and construct on 7 under the floor that a plurality of crossarm members 71 of configuration form substantially in parallel.That is, for structure is supported on both sides.Crossarm member 71 is in the horizontal direction of building construction, to extend and the framework that sets up.Under the floor consisting of this crossarm member 71, constructing 7 is, is equipped with the such flooring material of tabular floor framing 60 thereon.

In addition, as shown in Figure 6A, sometimes construct 7 under floor by devices spaced apart in one direction and a plurality of crossarm members 71 of configuration and a plurality of crossarm members 71 of configuring to devices spaced apart in the mode of intersecting with the plurality of crossarm member 71 are combined as lattice-shaped and form substantially in parallel in the direction with a direction quadrature.That is be, that structure is supported on four limits.Tabular floor framing 60 is, such as being fixed and use with respect to each crossarm member 71 by the standing finishes such as Screw, bolt 81, but is known means with respect to the fixing means of this crossarm member 71, without particular limitation of.

Crossarm member 71 by approximate horizontal in building the upper end of the framework component such as square steel, H shaped steel of setting or the plane materiel that roughly sets vertical form.In the situation that crossarm member 71 consists of framework components such as square steel, H shaped steel, when being applied to the building of the steel work such as office building, collective residence, can be used as crossbeam, girder etc.In addition,, when being applied to the buildings such as only house, iron and steel house, can be used as floor joist, channel, channel support etc.

As shown in Figure 18 A and Figure 18 B, the tabular floor framing 1 of present embodiment possesses: be spaced from each other predetermined distance and substantially in parallel configuration upper plane materiel 11 and lower plane materiel 13; And will between plane materiel on these 11 and lower plane materiel 12, link and form the core 15 of at least one pair of steel of hollow space (space) 19.This core 15 is, by its upper and lower side and upper plane materiel 11 and lower plane materiel 13, links, and separates thus the hollow space 19 between plane materiel 11 and lower plane materiel 13 on width X, is divided into one or more hollow spaces 19.In the 5th embodiment, by core 15, on width X, be separated out a plurality of hollow spaces 19.

Upper plane materiel 11 is born the effect as so-called floor lower shoe, also fancy plywood etc. can be installed in the above on the surface of material 11.Lower plane materiel 13 is born the effect as so-called ceiling floor, but the parts of the function with ceiling floor can certainly be in addition set in the lower side space of material 13 below.Upper plane materiel 11 and lower plane materiel 13, the steel sheet material being adjusted as illustrated in the above-described first embodiment by the size of each parts forms.

Core 15, consists of a plurality of channel-section steels in the 5th embodiment with respect to formations such as shaped steel such as the steel plate of length direction (depth direction) the Y almost parallel of tabular floor framing 60, channel-section steel, i iron, lipped channel, angle steel, box steel its length direction Y.Core 15 is, make its upper and lower side with respect on the basis of plane materiel 11, lower plane materiel 13 butts, by the standing finishes such as screw, rivet 81 or welding, they are fixed, with respect to upper plane materiel 11, lower plane materiel 13, connect thus.The core consisting of channel-section steel 15 of the 5th embodiment, possesses upper flange 33, the lower flange 35 of the both end sides up and down of junction plate 31 and junction plate 31.Make its upper flange 33, lower flange 35 with respect under the state of plane materiel 11, lower plane materiel 13 butts, by the standing finishes such as screw, rivet (fixed part) 84,85 or welding, core 15 and upper plane materiel 11, lower plane materiel 13 are fixed.Thus, core 15 is connected with upper plane materiel 11, lower plane materiel 13.

As shown in Figure 17 A, the tabular floor framing 60 in the 5th embodiment is, in the mode of the opening of stemming length direction both sides, the end plate 16 consisting of sheet material is installed.This end plate 16 is such as connecting with respect to upper plane materiel 11, lower plane materiel 13 by standing finishes such as welding or screws.In the tabular floor framing 60 of the 6th embodiment, upper plane materiel 11 is connected with respect to end plate 16 by welding respectively with lower plane materiel 13.This end plate 16 not necessarily forms in the present embodiment.

Then, to having applied the 6th embodiment of tabular floor framing of the present invention, describe.In addition, for the inscape identical with above-mentioned inscape, give identical symbol, thus the description thereof will be omitted below.

Figure 20 A means the stereogram of formation of the tabular floor framing 70 of the 6th embodiment, and Figure 20 B is its main sectional view of looking.

The tabular floor framing 70 of the 6th embodiment is compared with the tabular floor framing 60 of the 5th embodiment, and the formation of core 15 is different.In the tabular floor framing 70 of the 6th embodiment, core 15 consists of flap.

Particularly, the core 15 being formed by this flap is configured to, and the upper flange 43 arranging to approximate horizontal on width X and lower flange 45, via the junction plate 41 arranging obliquely with respect to width X, alternately form and become waveform on width X.The upper flange that is positioned at upper end side 43 of the core 15 being formed by flap is with respect to upper plane materiel 11 butts, the lower flange that is positioned at lower end side 45 of the core 15 being formed by flap is with respect to lower plane materiel 13 butts, and they are fixedly connected with by the standing finishes such as screw, rivet 814,85 or welding etc.Thus, the core 15 being formed by flap, will be divided into a plurality of hollow spaces 19 on width between upper plane materiel 11 and lower plane materiel 13.

And the tabular floor framing 70 of the 6th embodiment is also that the size of each vibrational system is adjusted to, and becomes prescribed limit as described above according to an eigentone of these each vibrational systems of afore mentioned rules formula decision.

In addition, in the 6th embodiment, a upper flange of core 15 43, a lower flange 45 are with respect to upper plane materiel 11, lower plane materiel 13, and a plurality of positions of devices spaced apart on length direction Y, fix by standing finish 84,85.Each position of upper flange 43, lower flange 45, fixes connection by a standing finish 84,85 respectively.In addition, the two ends of the width X of the core 15 being formed by flap, with respect to upper flange 43 or lower flange 45 bendings, to become to the roughly U font of the interior side opening of tabular floor framing 1.

In addition, core 15 both can so consist of flap, also can consist of corrugated sheet.And angulation α is preferably 45 degree ~ 80 degree between upper flange 43, lower flange 45 and junction plate 41.

Then, to having applied the 7th embodiment of tabular floor framing of the present invention, describe.

Figure 21 A means the stereogram of formation of the tabular floor framing 80 of the 7th embodiment, and Figure 21 B means the lateral view of the formation of the plate component parts 50 that forms this tabular floor framing 80, and Figure 21 C is that the master of this tabular floor framing 80 looks sectional view.

The tabular floor framing 80 of the 7th embodiment is to form by combining plate component parts 50 such shown in a plurality of Figure 21 B.Plate component parts 50 is to extend in the longitudinal direction, and have: junction plate 51; Upper flange 53, is arranged on one end of this junction plate 51, on width, extends; And lower flange 55, be arranged on the other end of junction plate 51, to the direction contrary with upper flange 53, extend.That is, upper flange 53 and lower flange 55 be, with respect to junction plate 51, roughly in vertical, extending, and crooked and arrange to the rightabout width X from the upper and lower side of junction plate 51.Thus, the cross sectional shape of plate component parts 50 is configured to roughly Z-shaped shape.This plate component parts 50 is by carrying out bending machining, roll forming, hot-pressed etc. forming to steel plate.

As shown in Figure 21 C, this plate component parts 50 has identical state of orientation and configures, to form respectively roughly same plane by upper flange 53 and lower flange 55.; tabular floor framing 30 is; with upper flange 53 and lower flange 54, form respectively conplane mode; on width, adjacency is arranged; in abutting connection with a plurality of upper flanges 53 of arranging, form the upper plane materiel 11 shown in the 5th embodiments; in abutting connection with a plurality of lower flanges 55 of arranging, form the lower plane materiel 13 shown in the 5th embodiments, junction plate 51 is core 15.Thus, form the tabular floor framing 80 of the 7th embodiment.The leading section 53a of the upper flange 53 of plate component parts 50 is with the base end part 53b of the upper flange 53 of other plate component parts 50 of adjacency, fixing by welding, mechanical engagement etc.And, the leading section 55a of the lower flange 55 of plate component parts 50 is with the base end part 55b of the lower flange 55 of other plate component parts 50 of adjacency, fixing by welding, mechanical engagement etc.Thus, the plate component parts 50 of adjacency is interfixed.

So, the tabular floor framing 80 consisting of a plurality of plate component parts 50 is by upper flange 53 and the lower flange upper plane materiel 11 of 55 formation and the lower plane materiel 13 of a plurality of plate component parts 50, and to form cores 15 by the junction plate 51 of each plate component parts 50.

And the tabular floor framing 80 of the 7th embodiment is also that the size of each vibrational system is adjusted to, and becomes prescribed limit as described above according to an eigentone of these each vibrational systems of afore mentioned rules formula decision.

Then, to having applied the 8th embodiment of tabular floor framing of the present invention, describe.

Figure 22 A means the portions cut stereogram of formation of the tabular floor framing 90 of the 8th embodiment, and Figure 22 B is its main sectional view of looking.

The tabular floor framing 90 of the 8th embodiment is, further possesses the sound absorption material 61 of the hollow space 19 interior fillings of being separated by core 15 between material 11 in the above and lower plane materiel 13 and arranging.Sound absorption material 61 is such as consisting of concrete based materials such as the foamed materials such as the fibrous materials such as asbestos, glass wool, urethane foam, light weight concrete construction, foam concrete etc.

In addition, the tabular floor framing 90 in the 8th embodiment is the end plate 16 opening, that consist of sheet material of stemming length direction Y both sides to be installed, to sound absorption material 61 can be filled in hollow space 19.

Above, the example of embodiments of the present invention is had been described in detail, but above-mentioned embodiment all only represents to implement specific example when of the present invention, can not restrictively explain technical scope of the present invention according to these.

Embodiment 3

In embodiment 3, use No.1 in above-mentioned table 6 and the tabular floor framing of these two kinds of cross section performances of No.8, according to JIS A 1418-2, carry out important place plate impact sound test, investigation is with respect to the sound pressure level of each frequency.

Figure 23 means the figure of the result of this important place plate impact sound test.Transverse axis represents 1/1 mid-frequency of octave band, and the longitudinal axis represents sound pressure level.The result that represents No.1 as a comparative example with line of dots, represents the result as the No.8 of example with square line.

When comparing both, can confirm to there is as the No.8 of example the higher sound-proofing of No.1 that is compared to comparative example.When with reference to table 7-1, table during 7-2, as the whole mass M of the No.8 of example _allbe 102 (kg/m ²), the whole mass M of No.1 as a comparative example _allbe 92 (kg/m ²), be same degree.But, as the No.8 of example, meet the whole of formula (21) ~ (23), with respect to this, No.1 as a comparative example only meets formula (21), and an eigentone of body vibration system has surpassed 45Hz.Thus, as the acoustical ratings Lh of tabular floor framing of the inventive example of calculated value and the acoustical ratings Lh of the tabular floor framing of the comparative example height of comparing, but in measured value, example is compared step-down with comparative example.Therefore, by becoming the mode below the above 45Hz of 15Hz to meet an eigentone of the whole and body vibration system of formula (21) ~ (23), adjust the size of each parts, can provide thus and realize the good tabular floor framing of light-weighted while sound-proofing.

The explanation of symbol

1 tabular floor framing

Under 7 floors, construct

10 sheet structures

Plane materiel on 11

13 times plane materiels

15 cores

16 end plates

17 connecting portions

19 hollow spaces

21 body vibration systems

23 first's vibrational systems

25 second portion vibrational systems

27 support sectors

31 junction plates

33 upper flanges

35 lower flanges

41 junction plates

43 upper flanges

45 lower flanges

51 junction plates

53 upper flanges

55 lower flanges

61 sound absorption materials

71 crossarm members

81 standing finishes

Claims

1. a tabular floor framing, possesses: be spaced from each other predetermined distance and substantially in parallel configuration upper plane materiel and lower plane materiel; To between plane materiel on these and lower plane materiel, link and form the core of at least one pair of steel in space; Crossarm member, the width of the body vibration system by plane materiel, above-mentioned lower plane materiel and above-mentioned core form on above-mentioned or with the length direction of this width quadrature on devices spaced apart and extend configuration along two end limits of above-mentioned lower plane materiel, and support above-mentioned lower plane materiel; And fixed part, above-mentioned lower plane materiel and above-mentioned crossarm member are fixed,

At least one in configuration space between the length dimension of the length dimension of above-mentioned upper plane materiel and above-mentioned lower plane materiel, width dimensions, thickness of slab, afore mentioned rules interval, above-mentioned core, thickness of slab and above-mentioned each core is adjusted to, meet following (A) and following (B)

Above-mentioned body vibration system has the isotropism that meets following formula (1),

An eigentone (f of above-mentioned body vibration system ₁) meet following formula (2),

(A) above-mentioned body vibration system eigentone is below the above 45Hz of 15Hz,

(B) eigentone of above-mentioned upper plane materiel, above-mentioned lower plane materiel or above-mentioned core partial vibration system is separately below the above 20000Hz of 707Hz,

Ex·Ix＝Ey·Iy ···(1)

f_{1} = \frac{π}{2} \times \sqrt{\frac{E_{1} I_{1}}{ρ_{1} S_{1}}} \times {(\frac{1}{l_{1}})}^{2} . . . (2)

Wherein,

ρ ₁: the density (kg/m of above-mentioned body vibration system ³)

2. a tabular floor framing, possesses: be spaced from each other predetermined distance and substantially in parallel configuration upper plane materiel and lower plane materiel; To between plane materiel on these and lower plane materiel, link and form the core of at least one pair of steel in space; Crossarm member, devices spaced apart on the width of the body vibration system by plane materiel, above-mentioned lower plane materiel and above-mentioned core form on above-mentioned and length direction and extend configuration along four end limits of above-mentioned lower plane materiel, and support above-mentioned lower plane materiel; And fixed part, at least above-mentioned lower plane materiel and above-mentioned crossarm member in above-mentioned upper plane materiel and above-mentioned lower plane materiel are fixed,

Above-mentioned body vibration system has the isotropism that meets following formula (3),

An eigentone (f of above-mentioned body vibration system ₂) meet following formula (4),

Ex·Ix＝Ey·Iy ···(3)

f_{2} = \frac{π}{2} \times \sqrt{\frac{E_{1} I_{1}}{(1 - v_{1}^{2}) ρ_{1} S_{1}}} \times {{(\frac{1}{l_{1}})}^{2} + {(\frac{1}{l_{2}})}^{2}} . . . (4)

Wherein,

ν ₁: the poisson's ratio of above-mentioned body vibration system

ρ ₁: the density (kg/m of above-mentioned body vibration system ³)

3. a tabular floor framing, possesses: be spaced from each other predetermined distance and substantially in parallel configuration upper plane materiel and lower plane materiel; To between plane materiel on these and lower plane materiel, link and form the core of at least one pair of steel in space; Crossarm member, devices spaced apart on the length direction of the body vibration system by plane materiel, above-mentioned lower plane materiel and above-mentioned core form on above-mentioned and extend configuration along two of above-mentioned lower plane materiel end limits, and support above-mentioned lower plane materiel; And fixed part, above-mentioned lower plane materiel and above-mentioned crossarm member are fixed,

Above-mentioned body vibration system has the anisotropy that meets following formula (5),

An eigentone (f of above-mentioned body vibration system ₃) meet following formula (6),

Ex·Ix≠Ey·Iy ···(5)

f_{3} = \frac{π}{2} \times \sqrt{\frac{E_{1} I_{1}}{ρ_{1} S_{1}}} \times {(\frac{1}{l_{1}})}^{2} . . . (6)

Wherein,

ρ ₁: the density (kg/m of above-mentioned body vibration system ³)

S ₁: above-mentioned body vibration system and sectional area (mm above-mentioned width quadrature ²)

4. a tabular floor framing, possesses: be spaced from each other predetermined distance and substantially in parallel configuration upper plane materiel and lower plane materiel; To between plane materiel on these and lower plane materiel, link and form the core of at least one pair of steel in space; Crossarm member, devices spaced apart on the width of the body vibration system by plane materiel, above-mentioned lower plane materiel and above-mentioned core form on above-mentioned and length direction and extend configuration along four end limits of above-mentioned lower plane materiel, and support above-mentioned lower plane materiel; And fixed part, at least above-mentioned lower plane materiel and above-mentioned crossarm member in above-mentioned upper plane materiel and above-mentioned lower plane materiel are fixed,

Above-mentioned body vibration system has the anisotropy that meets following formula (7),

An eigentone (f of above-mentioned body vibration system ₄) meet following formula (8),

Ex·Ix≠Ey·Iy ···(7)

f_{4} = \frac{π}{2} \times \sqrt{{\frac{D_{x}}{l_{1}^{4}} + \frac{D_{y}}{l_{2}^{4}} + \frac{2}{l_{1}^{2} \times l_{2}^{2}} \times (D_{l} + {2 D}_{xy})} \times \frac{1}{ρ_{1}}} . . . (8)

Wherein,

D_{l} = v_{1} \times \sqrt{D_{x} \times D_{y}}

D_{xy} = \frac{(1 - v_{1}) \times \sqrt{D_{x} \times D_{y}}}{2}

D_{x} = \frac{E_{1}}{(1 - v_{1}^{2})} \times \frac{I_{y}}{S_{y}}

D_{y} = \frac{E_{1}}{(1 - v_{1}^{2})} \times \frac{I_{x}}{S_{x}}

ρ ₁: the density (kg/m of above-mentioned body vibration system ³)

ν ₁: the poisson's ratio of above-mentioned body vibration system

5. a tabular floor framing, possesses: be spaced from each other predetermined distance and substantially in parallel configuration upper plane materiel and lower plane materiel; To between plane materiel on these and lower plane materiel, link and form the core of at least one pair of steel in space; Crossarm member, the width of the body vibration system by plane materiel, above-mentioned lower plane materiel and above-mentioned core form on above-mentioned or with the length direction of this width quadrature on devices spaced apart and extend configuration along two end limits of above-mentioned lower plane materiel, and support above-mentioned lower plane materiel; Fixed part, is fixed at least above-mentioned lower plane materiel and above-mentioned crossarm member in above-mentioned upper plane materiel and above-mentioned lower plane materiel; And other fixed parts, in the situation that only above-mentioned lower plane materiel is fixed on above-mentioned crossarm member, above-mentioned upper plane materiel and miscellaneous part are fixed,

Above-mentioned body vibration system has the isotropism that meets following formula (9),

An eigentone (f of above-mentioned body vibration system ₅) meet following formula (10),

Ex·Ix＝Ey·Iy ···(9)

f_{5} = \frac{{4.73}^{2}}{2 π} \times \sqrt{\frac{E_{1} I_{1}}{ρ_{1} S_{1}}} \times {(\frac{1}{l_{1}})}^{2} . . . (10)

Wherein,

ρ ₁: the density (kg/m of above-mentioned body vibration system ³)

6. a tabular floor framing, possesses: be spaced from each other predetermined distance and substantially in parallel configuration upper plane materiel and lower plane materiel; To between plane materiel on these and lower plane materiel, link and form the core of at least one pair of steel in space; Crossarm member, devices spaced apart on the width of the body vibration system by plane materiel, above-mentioned lower plane materiel and above-mentioned core form on above-mentioned and length direction and extend configuration along four end limits of above-mentioned lower plane materiel, and support above-mentioned lower plane materiel; Fixed part, is fixed at least above-mentioned lower plane materiel and above-mentioned crossarm member in above-mentioned upper plane materiel and above-mentioned lower plane materiel; And other fixed parts, in the situation that only above-mentioned lower plane materiel is fixed on above-mentioned crossarm member, above-mentioned upper plane materiel and miscellaneous part are fixed,

Above-mentioned body vibration system has the isotropism that meets following formula (11),

An eigentone (f of above-mentioned body vibration system ₆) meet following formula (12),

Ex·Ix＝Ey·Iy ···(11)

f_{6} = \frac{3}{π \times l_{1}^{2} \times l_{2}^{2}} \times \sqrt{2 \times ({7 l}_{1}^{4} + {4 l}_{1}^{2} l_{2}^{2} + {7 l}_{2}^{4}) \times \frac{E_{1} I_{1}}{(1 - v_{1}^{2}) ρ_{1} S_{1}}} . . . (12)

Wherein,

ν ₁: the poisson's ratio of above-mentioned body vibration system

ρ ₁: the density (kg/m of above-mentioned body vibration system ³)

7. a tabular floor framing, possesses: be spaced from each other predetermined distance and substantially in parallel configuration upper plane materiel and lower plane materiel; To between plane materiel on these and lower plane materiel, link and form the core of at least one pair of steel in space; Crossarm member, the width of the body vibration system by plane materiel, above-mentioned lower plane materiel and above-mentioned core form on above-mentioned or with the length direction of this width quadrature on devices spaced apart and extend configuration along two end limits of above-mentioned lower plane materiel, and support above-mentioned lower plane materiel; Fixed part, is fixed at least above-mentioned lower plane materiel and above-mentioned crossarm member in above-mentioned upper plane materiel and above-mentioned lower plane materiel; And other fixed parts, in the situation that only above-mentioned lower plane materiel is fixed on above-mentioned crossarm member, above-mentioned upper plane materiel and miscellaneous part are fixed,

Above-mentioned body vibration system has the anisotropy that meets following formula (13),

An eigentone (f of above-mentioned body vibration system ₇) meet following formula (14),

Ex·Ix≠Ey·Iy ···(13)

f_{7} = \frac{{4.73}^{2}}{2 π} \times \sqrt{\frac{E_{1} I_{1}}{ρ_{1} S_{1}}} \times {(\frac{1}{l_{1}})}^{2} . . . (14)

Wherein,

ρ ₁: the density (kg/m of above-mentioned body vibration system ³)

8. a tabular floor framing, possesses: be spaced from each other predetermined distance and substantially in parallel configuration upper plane materiel and lower plane materiel; To between plane materiel on these and lower plane materiel, link and form the core of at least one pair of steel in space; Crossarm member, devices spaced apart on the width of the body vibration system by plane materiel, above-mentioned lower plane materiel and above-mentioned core form on above-mentioned and length direction and extend configuration along four end limits of above-mentioned lower plane materiel, and support above-mentioned lower plane materiel; Fixed part, is fixed at least above-mentioned lower plane materiel and above-mentioned crossarm member in above-mentioned upper plane materiel and above-mentioned lower plane materiel; And other fixed parts, in the situation that only above-mentioned lower plane materiel is fixed on above-mentioned crossarm member, above-mentioned upper plane materiel and miscellaneous part are fixed,

Above-mentioned body vibration system has the anisotropy that meets following formula (15),

An eigentone (f of above-mentioned body vibration system ₈) meet following formula (16),

Ex·Ix≠Ey·Iy ···(15)

f_{8} = \frac{1 π}{2 π} \times \sqrt{{\frac{504}{l_{1}^{4}} D_{x} + \frac{504}{l_{2}^{4}} D_{y} + \frac{288}{l_{1}^{2} \times l_{2}^{2}} \times (D_{l} + {2 D}_{xy})} \times \frac{1}{ρ_{1}}} . . . (16)

Wherein,

D_{l} = v_{1} \times \sqrt{D_{x} \times D_{y}}

D_{xy} = \frac{(1 - v_{1}) \times \sqrt{D_{x} \times D_{y}}}{2}

D_{x} = \frac{E_{1}}{(1 - v_{1}^{2})} \times \frac{I_{y}}{S_{y}}

D_{y} = \frac{E_{1}}{(1 - v_{1}^{2})} \times \frac{I_{x}}{S_{x}}

ρ ₁: the density (kg/m of above-mentioned body vibration system ³)

ν ₁: the poisson's ratio of above-mentioned body vibration system

9. the tabular floor framing as described in any one in claim 1～8, is characterized in that,

Further possess:

The first core fixed part, above-mentioned core and above-mentioned on the contact site of plane materiel, above-mentioned upper plane materiel and above-mentioned core are fixed; And

The second core fixed part, at the contact site of above-mentioned core and above-mentioned lower plane materiel, is fixed above-mentioned lower plane materiel and above-mentioned core,

An eigentone (f of above-mentioned upper plane materiel and above-mentioned lower plane materiel ₉) meet following formula (17),

f_{9} = \frac{π}{2} \times \sqrt{\frac{E_{4} {t_{4}}^{2}}{{12 ρ}_{4} (1 - v_{4}^{2})}} \times {{(\frac{1}{a_{4}})}^{2} + {(\frac{1}{b_{4}})}^{2}} . . . (17)

Wherein,

B ₄: the configuration space between above-mentioned core (mm).

10. the tabular floor framing as described in any one in claim 1～8, is characterized in that,

Further possess:

Above-mentioned core and above-mentioned on the contact site of plane materiel, a plurality of fixed parts that above-mentioned upper plane materiel and above-mentioned core are fixed; And

At the contact site of above-mentioned core and above-mentioned lower plane materiel, a plurality of fixed parts that above-mentioned lower plane materiel and above-mentioned core are fixed,

An eigentone (f of above-mentioned upper plane materiel and above-mentioned lower plane materiel ₁₀) meet following formula (18),

f_{10} = \frac{3}{π \times a_{4}^{2} \times b_{4}^{2}} \times \sqrt{2 \times (7 a_{4}^{4} + 4 a_{4}^{2} b_{4}^{2} + 7 b_{4}^{4}) \times \frac{E_{4} t_{4}^{2}}{12 ρ_{4} (1 - v_{2}^{2})}} . . . (18)

Wherein,

B ₄: the configuration space between above-mentioned core (mm).

11. tabular floor framings as described in any one in claim 1～8, is characterized in that,

In above-mentioned space, be filled with sound absorption material.

12. tabular floor framings as described in any one in claim 1～8, is characterized in that,

Possess a plurality of plate component parts, this plate component parts extends on above-mentioned length direction, and there is junction plate, be arranged on one end the upper flange extending of this junction plate and be arranged on the other end of above-mentioned junction plate and the lower flange extending to the direction contrary with above-mentioned upper flange on above-mentioned width

Above-mentioned a plurality of plate component parts forms respectively conplane mode adjacency on above-mentioned width with above-mentioned upper flange and above-mentioned lower flange and arranges,

In abutting connection with a plurality of above-mentioned upper flange of arranging, form above-mentioned upper plane materiel,

In abutting connection with a plurality of above-mentioned lower flange of arranging, form above-mentioned lower plane materiel,

Above-mentioned junction plate is above-mentioned core.

13. tabular floor framings as claimed in claim 9, is characterized in that,

An eigentone (f of above-mentioned core ₁₁) meet following formula (19),

f_{11} = \frac{π}{2} \times \sqrt{\frac{E_{5} {t_{5}}^{2}}{12 ρ_{5} (1 - v_{5}^{2})}} \times {{(\frac{1}{a_{5}})}^{2} + {(\frac{1}{b_{5}})}^{2}} . . . (19)

Wherein,

E ₅: the young's modulus of elasticity (N/mm of above-mentioned core ²)

ρ ₅: the density (kg/m of above-mentioned core ³)

ν ₅: the poisson's ratio of above-mentioned core

B ₅: afore mentioned rules interval (mm).

14. tabular floor framings as claimed in claim 10, is characterized in that,

An eigentone (f of above-mentioned core ₁₂) meet following formula (20),

f_{12} = \frac{3}{π \times a_{5}^{2} \times b_{5}^{2}} \times \sqrt{2 \times (7 a_{5}^{4} + 4 a_{5}^{2} b_{5}^{2} + 7 b_{5}^{4}) \times \frac{E_{5} t_{5}^{2}}{12 ρ_{5} (1 - v_{5}^{2})}} . . . (20)

Wherein,

E ₅: the young's modulus of elasticity (N/mm of above-mentioned core ²)

ρ ₅: the density (kg/m of above-mentioned core ³)

ν ₅: the poisson's ratio of above-mentioned core

B ₅: afore mentioned rules interval (mm).

15. 1 kinds of tabular floor framings, possess: be spaced from each other predetermined distance and substantially in parallel configuration upper plane materiel and lower plane materiel; To between plane materiel on these and lower plane materiel, link and form the core of at least one pair of steel in space; Crossarm member, the width of the body vibration system by plane materiel, above-mentioned lower plane materiel and above-mentioned core form on above-mentioned or with the length direction of this width quadrature on devices spaced apart and extend configuration along two end limits of above-mentioned lower plane materiel, and support above-mentioned lower plane materiel; And fixed part, above-mentioned lower plane materiel and above-mentioned crossarm member are fixed,

This tabular floor framing meets following formula (21) to (23),

EI _f≥0.65×EI _all ···(21)

M _w≥0.40×M _all ···(22)

M _w≥EI _w/(k×l ⁴)(k＝719) ···(23)

Wherein,

M _w: the quality (kg/m of above-mentioned core ²)

EI _w: the bending stiffness (Nm of above-mentioned core ²)

16. 1 kinds of tabular floor framings, possess: be spaced from each other predetermined distance and substantially in parallel configuration upper plane materiel and lower plane materiel; And will between plane materiel on these and lower plane materiel, link and form the core of at least one pair of steel in space,

Above-mentioned core has: with the upper planar portions of above-mentioned upper plane materiel with plane contact; With the lower flat portion of above-mentioned lower plane materiel with plane contact; And the rake tilting with respect to above-mentioned upper plane materiel and above-mentioned lower plane materiel,

Above-mentioned upper planar portions, above-mentioned rake and above-mentioned lower flat portion form continuously according to this order,

17. 1 kinds of building constructions, is characterized in that,

Possesses the tabular floor framing described in any one in claim 1～8.