JP5037367B2 - Panel floor structure that can reduce floor impact sound level - Google Patents

Description

  The present invention relates to a panel floor structure, and more particularly, to a panel floor structure including a panel floor and a floor material disposed above the panel floor.

Conventionally, in a house such as a detached house or an apartment house, there is a problem that noise generated on the floor is transmitted as noise to the downstairs room, and human noise, which is particularly problematic with noise generated on the floor, It was a heavy floor impact sound generated by children running around and jumping, moving furniture such as chairs and tables. Such a heavy floor impact sound is a solid propagation sound transmitted through a floor board, a beam, or the like, and thus measures to improve the sound insulation performance of the floor and ceiling are necessary. As one of floor insulation measures, it is known to use a floating floor structure (see, for example, Patent Document 1).
In the floating floor structure described in Patent Document 1, the floor has a double cross-sectional structure of a housing plane (slab) and a walking plane (floating floor), and the vibration of the walking plane is insulated from the housing plane. The sound insulation effect by this measure is great, and such a double-section structure is widely used in office buildings and condominiums.

JP-A-2005-207190

In recent years, there has been an increasing demand for so-called steel houses, which are so-called steel houses and apartment houses in which wall surfaces and floor surfaces are formed by a panel structure in which face materials are attached to a frame material made of thin lightweight steel. Steel houses have many advantages, such as excellent earthquake resistance and durability, and panel construction that allows easy on-site work, a short construction period, and low construction costs. In addition, the greatest feature of the panel structure is that it can realize a high structural performance reasonably by being hollow and lightweight. As a result, the application destination is not limited to a steel house, and it can be used to form a wall surface or a floor surface in a heavy steel structure or a reinforced concrete structure building such as an office building or a medium- and high-rise apartment.
However, because the panel structure is hollow and lightweight, sound propagation is good. For example, the floor impact sound generated on the floor is more likely to be transmitted as noise to the downstairs room compared to the floor of a reinforced concrete slab. . Therefore, there is a problem that it is difficult to obtain sufficient sound insulation performance against floor impact sound generated on the floor by simply adopting the double cross-sectional structure of Patent Document 1 as it is on the panel floor.

  The objective of this invention is providing the panel floor structure which can reduce the floor impact sound level propagated downstairs in the building which forms a floor surface with a panel structure.

The panel floor structure according to claim 1 of the present invention is a panel floor structure that can be arranged in a floor structure in which horizontal beams of large beams and small beams and / or beams and joists are assembled in a grid shape. A panel floor having a plurality of support members disposed between the material and the pair of face materials, and a floor material supported via a plurality of support legs on the upper side of the panel floor, The upper side member and the lower side member are mutually connected by the support member disposed substantially parallel to each other between the pair of face members formed of a lower side member and an upper side member formed in a substantially rectangular shape as a whole. A plurality of the support members are arranged substantially parallel to each other in a direction intersecting with the longitudinal direction thereof, and the support legs are arranged above the upper side member and a part of the joint portion of the support member. is erected in a plurality of locations of the surface of the upper side surface member, said support member In a direction intersecting the longitudinal direction, the number of the joint portion of the upper side surface member and the support member is characterized by greater than the number of the support legs.

According to this configuration, the support leg is erected on the surface of the upper side surface material above the joint portion between the upper side surface material and the support material, and the floor material is supported by the support leg. The floor impact sound generated at the position can be propagated directly to the support material of the panel floor via the support legs. The impact sound generated when the surface of the upper side material that is the joint portion with the support material is vibrated is more than when the surface of the upper side material that is not the joint portion with the support material is vibrated. The floor impact sound level propagated downstairs can be reduced by utilizing the characteristic of the panel floor that the level of the floor is small. In addition, the characteristic of said panel floor is a characteristic supported by the test result mentioned later.
Moreover, since the panel floor is used, the advantage that the field work is simple, the construction period is short, and the construction cost is low is maintained.

The panel floor structure according to claim 2 of the present invention is a panel floor structure that can be arranged in a floor structure in which horizontal beams of large beams and small beams and / or beams and joists are assembled in a grid shape. A panel floor having a corrugated sheet material and a corrugated sheet material disposed between the pair of face materials, and a floor material supported by a plurality of support legs on the upper side of the panel floor, The corrugated sheet material having troughs and ridges alternately disposed between the pair of face materials composed of a lower side surface material and an upper side surface material formed in a substantially rectangular shape, the lower side surface material becomes the trough portion. The upper side material is joined to the peak portion, and a plurality of the peak portions are arranged substantially parallel to each other in a direction intersecting with the longitudinal direction thereof. multiple箇of the surface of the on the side member in a portion of the upper bonding portion of the crest Erected on, in a direction intersecting the longitudinal direction of the ridges, the number of the joint portion of the upper side surface member and said ridges are characterized by greater than the number of the support legs.

  According to this configuration, the flooring material is provided by allowing the supporting leg to stand on the surface of the upper side surface material above the joint portion between the upper side surface material and the peak portion of the corrugated sheet material and supporting the flooring material with the supporting leg. The floor impact sound generated at an arbitrary position on the surface can be directly propagated to the corrugated plate material of the panel floor via the support leg. The impact sound that occurs when the surface of the upper side material that is the joint portion with the ridge is vibrated is greater than when the surface of the upper side material that is not the joint portion with the ridge is vibrated. The floor impact sound level propagated downstairs can be reduced by utilizing the characteristic of the panel floor that the level of the floor is small.

In the panel floor structure of the present invention, the panel floor does not need to have a pair of upper and lower face members and a plurality of support members arranged between the pair of face members. An inclined plate-like web, a plate-like upper flange extending in the first direction from the upper end of the web, and an opposite direction from the first direction from the lower end of the web A plurality of panel structural members having a plate-like lower flange are adjacently arranged and connected with substantially the same orientation so that the upper flanges and the lower flanges form substantially the same plane. It may be. In this case, the panel floor structure includes a floor material supported on the upper side of the panel floor via a plurality of support legs, and the support legs are formed of the upper flange at the intersection of the upper flange and the web. It is assumed that it is erected at multiple locations on the surface.

At this time, in the panel floor structure of the present invention, the panel floor may be made of steel. For example, in a panel floor constituted by a support material and a face material, a thin plate lightweight section steel is used as a support material, a thin steel plate is used as a pair of face materials, and in a panel floor constituted by a corrugated sheet material and a face material, The thin steel plate may be bent to form a corrugated plate material, and the thin steel plate may be used as a face material.
According to this configuration, a building that forms a floor using a steel panel floor, for example, a steel house such as a detached house or an apartment house, a heavy steel structure or a reinforced concrete structure such as an office building or a mid-high-rise apartment It can be easily adopted as a panel floor structure in a building.

Moreover, in the panel floor structure of this invention, it is preferable that the anti-vibration member is provided between the surface of the upper side material, and the support leg.
According to this configuration, since the damping member is provided between the surface of the upper side member and the support leg, the floor impact sound on the floor is absorbed by the damping member and the floor impact sound level transmitted to the lower floor is further increased. Can be reduced.
In the panel floor structure of the present invention, the support legs may be integrally formed with the panel floor upper side material.

  According to the panel floor structure of the present invention as described above, the floor impact sound level propagated downstairs can be reduced.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 and FIG. 2 are a perspective view and a longitudinal sectional view partially showing a panel floor structure 1 according to the first embodiment of the present invention in section.
The panel floor structure 1 in FIG. 1 and FIG. 2 includes a panel floor 5 formed by a support material 2 made of a thin lightweight steel, a pair of upper and lower upper side materials 3 and a lower side material 4 made of a thin steel plate, and this panel floor. A plurality of shaft-like support legs 6 disposed on the upper surface of the base plate 5 and a floor material 7 supported by the plurality of support legs 6, and a large beam and a small beam provided between the upper and lower floors, or It is supported and fixed to the beam and joists to form a floor surface.

  The pair of upper side surface material 3 and lower side surface material 4 of the panel floor 5 are formed in a substantially rectangular shape as a whole, and are arranged substantially parallel to each other with a predetermined interval therebetween. A plurality of support materials 2 for the panel floor 5 are arranged between the pair of upper side surface materials 3 and lower side surface materials 4 substantially in parallel with each other at a constant pitch interval. The support member 2 is formed by bending a thin steel plate into a substantially U-shaped cross section, and has an upper flange portion 21, a lower flange portion 22 substantially parallel to the upper flange portion 21, and a web portion 23 connecting them. The upper surface of the upper flange portion 21 and the lower surface of the upper side surface material 3 which are the upper end portions of the support material 2 made of such a grooved steel, and the lower surface and the lower side surface of the lower flange portion 22 which is the lower end portion of the support material 2. The upper surfaces of the material 4 are joined to each other by screwing or welding.

The support legs 6 are made of, for example, a resin material formed in a substantially columnar shape, and a plurality of locations on the surface of the upper side member 3 above a part of the joint portion between the upper side member 3 and the upper flange portion 21. Respectively. That is, a plurality of support legs 6 are arranged along the longitudinal direction of the support material 2. However, the support legs 6 are not disposed at all of the joint portions between the plurality of support members 2 and the upper flange portion 21, but are disposed above a part of the joint portions, and the longitudinal length of the support member 2. In the direction intersecting with the direction, the number of joint portions between the upper side member 3 and the upper flange portion 21 is larger than the number of the support legs 6.
The base end of the support leg 6 is provided on the upper side surface member 3 via a rubber base 8 which is a vibration isolating member. Specifically, the base end of the support leg 6 is screwed and fixed to the base 8 so that the height of the support leg 6 can be adjusted. The tip of the support leg 6 is fixed to the lower surface of the flooring 7 with an adhesive. The support leg 6 ensures a predetermined distance between the upper side material 3 and the floor material 7. The flooring 7 is made of, for example, particle board, and laminated flooring or the like is formed on the surface of the flooring 7.

According to this embodiment, there are the following effects.
(1) A support leg 6 is erected on the surface of the upper side material 3 above the joint portion between the upper side material 3 and the support material 2, and the floor material 7 is supported by the support leg 6 so that the floor The floor impact sound generated at an arbitrary position on the surface of the material 7 can be directly propagated to the support material 2 of the panel floor 5 through the support legs 6. And, when the surface of the upper side material 3 that is a joint portion with the support material 2 is vibrated rather than when the surface of the upper side material 3 that is not the joint portion with the support material 2 is vibrated, By utilizing the characteristic of the panel floor 5 that the level of the generated impact sound is small, the floor impact sound level propagated downstairs can be reduced. In particular, since the number of joint portions between the support member 2 and the upper flange portion 21 is larger than the number of support legs 6, it is possible to increase the joint portions where the level of impact sound generated is small.

(2) Moreover, since the panel floor 5 is used, the field work at the time of constructing the panel floor structure 1 can be simplified, a construction period can be shortened, and construction cost can be reduced.
(3) Since the rubber pedestal 8 is provided between the surface of the upper side member 3 and the support leg 6, the floor impact sound on the floor is absorbed by the pedestal 8 and the floor impact sound level transmitted downstairs is further increased. Can be reduced.

[Second Embodiment]
Next, a panel floor structure 1A according to a second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a longitudinal sectional view showing the panel floor structure 1A.
This panel floor structure 1A is different from the panel floor structure 1 of the first embodiment described above in that a corrugated sheet material 2A is provided between a pair of upper side material 3 and lower side material 4 instead of a plurality of support materials 2. The arrangement is different, and the other arrangements are substantially the same. That is, as shown in FIG. 3, the panel floor 5A in the panel floor structure 1A includes a corrugated sheet material 2A formed by bending a thin steel plate into a wave shape, a pair of upper and lower upper side materials 3 made of a thin steel plate, and a lower side surface. And the material 4.

The cross-sectional shape of the corrugated plate material 2A is formed in a continuous substantially trapezoidal shape, and includes a plurality of upper plate portions 21A, a plurality of lower plate portions 22A substantially parallel to the upper plate portion 21A, and a plurality of swash plates connecting them. Part 23A. The upper plate portion 21A and the swash plate portion 23A form a peak portion of the corrugated plate material 2A, and the lower plate portion 22A forms a valley portion of the corrugated plate material 2A. The corrugated sheet material 2 </ b> A is formed in a substantially rectangular shape as a whole by alternately arranging these peaks and valleys. The upper surface of the upper plate portion 21A constituting the mountain portion and the lower surface of the upper side surface material 3 and the lower surface of the lower plate portion 22A constituting the valley portion and the upper surface of the lower side surface material 4 are joined to each other by screwing or welding. Yes.
Also in the present embodiment, the support legs 6 are not disposed on all the joint portions of the upper surface of the upper plate portion 21A and the lower surface of the upper side surface member 3 constituting the mountain portion, but above a part of the joint portion. In the direction intersecting with the longitudinal direction of the upper plate portion 21 </ b> A that is a mountain portion, the number of joint portions between the upper surface of the upper plate portion 21 </ b> A and the lower surface of the upper side surface material 3 is larger than the number of support legs 6. It has become.

According to this embodiment, in addition to the effects substantially the same as the effects (2) and (3), the following effects can be achieved.
(4) A support leg 6 is erected on the surface of the upper side member 3 above the joint portion between the upper side member 3 and the upper plate part 21A of the corrugated plate member 2A, and the floor member 7 is supported by the support leg 6. Thus, the floor impact sound generated at an arbitrary position on the surface of the floor material 7 can be directly propagated to the corrugated sheet material 2A of the panel floor 5A via the support legs 6. Then, the case where the surface of the upper side member 3 that is a joint portion with the upper plate portion 21A is vibrated rather than the case where the surface of the upper side member 3 that is not the joint portion with the upper plate portion 21A is vibrated. However, the floor impact sound level propagated downstairs can be reduced by using the characteristic of the panel floor 5A that the level of the generated impact sound is small.

[Third Embodiment]
Next, a panel floor structure 1B according to a third embodiment of the present invention will be described with reference to FIG. FIG. 4 is a longitudinal sectional view showing the panel floor structure 1B.
This panel floor structure 1B is not a panel floor having a pair of upper and lower face members and a plurality of support members arranged between the pair of face members, with respect to the panel floor structure 1 of the first embodiment described above. As an alternative, the plate-like web 22B arranged vertically, the plate-like upper flange 21B extending from the upper end of the web 22B in the first direction, and the opposite of the first direction from the lower end of the web 22B It is composed of a plurality of panel structural members 2B having a plate-like lower flange 23B extending in the direction, and the substantially same orientation state so that the upper flanges 21B and the lower flanges 23B form substantially the same plane. Are different from each other in that the panel floor 5B is formed by connecting the panel structural members 2B adjacent to each other, and the other configurations are substantially the same. In the panel floor 5B, the web 22B may be inclined by a predetermined angle with respect to the vertical direction.
Further, the floor material 7 is supported on the upper side of the panel floor 5B via a plurality of support legs 6, and the support legs 6 are provided at a plurality of locations on the surface of the upper flange 21B at the intersection of the upper flange 21B and the web 22B. It is erected.
According to this embodiment, in addition to the effects substantially similar to the effects (1) and (3), the effect (2) can be improved.

In addition, this invention is not limited to the said embodiment, Including other structures etc. which can achieve the objective of this invention, the deformation | transformation etc. which are shown below are also contained in this invention.
In the first embodiment, although a part of the support legs above the junction between the supporting lifting member and the face material were arranged, as the support leg, unless they are arranged in all of the plurality of support well, for example, only the support leg to support every other may be placed. Similarly, the plurality of peaks in the second embodiment, the support legs in a part of the plurality of peaks may be be assigned. In addition , the support leg may be arrange | positioned above some webs 22B among the some webs 22B in 3rd Embodiment.
Moreover, although the support material of the panel floor of the said 1st Embodiment was formed with the channel steel, as a support material, it is not restricted to a channel steel, H-section steel joined respectively to an upper and lower surface material, A flat plate may be used as long as it is a member capable of transmitting a shearing force between at least upper and lower face materials. As in this embodiment, the use of thin lightweight steel has the advantage that the panel floor can be easily reduced in weight.
In addition, the present invention can be easily adopted as a panel floor structure in a steel house such as a detached house or an apartment house, a heavy steel structure such as an office building or a medium- and high-rise apartment, or a reinforced concrete structure building.

Moreover, although the case where it made from steel was demonstrated as a panel floor of each said embodiment, it is not restricted to this, You may be comprised with wood, the resin material, etc. For example, as the panel floor of the first embodiment, the panel floor structure of the present invention may be used even if it is a wooden panel floor formed by forming a face material with plywood and a support material with a wooden square. Applicable.
In each of the above embodiments, the case of a rubber pedestal has been described as the vibration damping member. However, the vibration damping member may be an elastic body other than rubber, such as a coil spring. It may be adopted.
In each of the above embodiments, support legs and floor materials are used to form a floating floor structure on the panel floor. However, the numbers, materials, shapes, and the like of the support legs and floor materials are the same as those of the present embodiment. It is not limited to.

In addition, the best configuration, method and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this. That is, the invention has been illustrated and described with particular reference to certain specific embodiments, but without departing from the spirit and scope of the invention, Various modifications can be made by those skilled in the art in terms of material, quantity, and other detailed configurations.
Therefore, the description limiting the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such restrictions is included in this invention.

Below, a prototype of a panel floor constituting the panel floor structure described in the above embodiment is prototyped, its floor impact sound is measured, and the floor impact sound level downstairs in the panel floor structure is experimentally tested. The verified embodiment will be described with reference to FIGS. FIG. 5 is a diagram for explaining a test using the panel floor 5C of this example, and FIG. 6 is a graph showing the floor impact sound level of the panel floor 5C.
In the following examples, a floor impact sound was generated by vibrating a test specimen of the panel floor 5C having a panel floor structure, and the floor impact sound was measured by changing the position of the vibration among the conditions of the vibration. And the test result about a floor impact sound level is demonstrated using a graph.

[First embodiment]
As shown in FIG. 5, the panel floor 5C in the panel floor structure of the first embodiment has groove steels as the support material 2 arranged at a constant pitch P (300 mm), and an upper flange portion of the groove steel. 21 and the lower flange portion 22 are joined by a steel plate (plate thickness T2: 4.5 mm) as the face materials 3 and 4. As the channel steel, one having a plate thickness T1 of 3.2 mm and an outer height H connecting both flange portions set to 175 mm is used.
When the panel floor 5C having such a configuration is used to vibrate the surface of the steel plate (position indicated by A in FIG. 5) above the joint portion between the channel steel and the steel plate (the support portion is vibrated). ) And the case where the surface of the steel plate (position indicated by B in FIG. 5) above the portion that is not the joining portion between the grooved steel and the steel plate is vibrated (the non-supporting portion is vibrated). The floor impact sound was measured by this method.
In this measurement, the excitation source is a heavy impact source (weight drop). In the graph of FIG. 6, the horizontal axis is the band center frequency of an octave frequency analyzer, and the vertical axis is the sound pressure level measured in the acoustic laboratory. Show. The measurement result when the support portion is vibrated is shown by a frequency-sound pressure curve a in FIG. 6, and the measurement result when the non-support portion is vibrated is a frequency-sound pressure curve b in FIG. It shows with.
According to the panel floor 5C of the first embodiment, as shown in FIG. 6, the floor impact in the predetermined frequency region is greater when the support portion is vibrated than when the non-support portion is vibrated. The sound level has decreased. That is, in the range of the primary natural frequency of the support material 2 as the core material, the floor impact sound reduction effect is increased, and specifically, a frequency range of 125 to 2000 Hz including the primary natural frequency of the core material. It was found that the floor impact sound was reduced.

Therefore, the panel floor structure of the present invention is disposed on the surface of the upper floor material, which is above the joint portion of the panel floor composed of the support material, the upper side material, and the lower side material, and the support material and the upper side material. The support leg and the floor material supported by the support leg allow the impact applied to the floor material to be transmitted directly to the support material through the support leg, thereby generating floor impact sound of the panel floor structure. It is thought that it can be reduced.
When the support material is formed of channel steel, the thickness T1 of the channel steel is set to 1.6 to 60 mm, and the outer height H of the channel steel is a planar element that receives in-plane compressive force. By setting the thickness to 140 to 390 mm according to the width-thickness ratio limitation, the primary natural frequency of the grooved steel as the support material becomes 90 to 710 Hz. From the test results of the present example, it was found that the floor impact sound reduction effect in the panel floor structure of the present invention is particularly large in the frequency range including the primary natural frequency of the channel steel.

It is a perspective view showing the panel floor structure concerning a 1st embodiment of the present invention. It is a longitudinal cross-sectional view which shows the said panel floor structure. It is a longitudinal cross-sectional view which shows the panel floor structure concerning 2nd Embodiment of this invention. It is a longitudinal cross-sectional view which shows the panel floor structure concerning 3rd Embodiment of this invention. It is a figure explaining the test using the panel floor of the panel floor structure which concerns on the Example of this invention. It is a graph which shows the floor impact sound level of the panel floor of the said Example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1,1A, 1B ... Panel floor structure, 2 ... Support material, 2A ... Corrugated sheet material, 2B ... Panel structural material, 3 ... Upper side material, 4 ... Lower side material, 5, 5A, 5B, 5C ... Panel floor, 6 ... support legs, 7 ... flooring, 8 ... pedestal (vibration isolation member), 21B ... upper flange, 22B ... web, 23B ... lower flange.

Claims (5)

In a panel floor structure that can be arranged on a floor structure in which horizontal beams of large beams and small beams and / or beams and joists are assembled in a grid shape,
A panel floor having a pair of upper and lower face members and a plurality of support members disposed between the pair of face members, and a floor member supported via a plurality of support legs on the upper side of the panel floor,
The panel floor is composed of the upper side material and the lower side surface by the support material disposed substantially parallel to each other between the pair of face materials composed of a lower side surface material and an upper side surface material formed in a substantially rectangular shape as a whole. The material is joined together,
A plurality of the support members are arranged substantially parallel to each other in a direction intersecting the longitudinal direction thereof,
The support legs are erected at a plurality of locations on the surface of the upper side material above the upper side material and a part of the joint portion of the support material ,
The panel floor structure characterized in that in the direction intersecting with the longitudinal direction of the support member, the number of joint portions between the upper side member and the support member is larger than the number of the support legs . In a panel floor structure that can be arranged on a floor structure in which horizontal beams of large beams and small beams and / or beams and joists are assembled in a grid shape,
A panel floor having a pair of upper and lower face materials and a corrugated sheet material disposed between the pair of face materials, and a floor material supported on the upper side of the panel floor via a plurality of support legs,
The panel floor is formed of the corrugated plate material having valleys and peaks alternately arranged between the pair of face materials composed of a lower side surface material and an upper side surface material that are formed in a substantially rectangular shape as a whole. A material is joined to the valley, and the upper side material is joined to the peak,
A plurality of the mountain portions are arranged substantially parallel to each other in a direction intersecting the longitudinal direction thereof,
The support legs are erected at a plurality of locations on the surface of the upper side member above the part of the joint of the upper side member and the mountain part ,
The panel floor structure characterized in that in the direction intersecting with the longitudinal direction of the peak portion, the number of joint portions of the upper side material and the peak portion is larger than the number of the support legs . In a panel floor structure that can be arranged on a floor structure in which horizontal beams of large beams and small beams and / or beams and joists are assembled in a grid shape,
As an alternative to a panel floor having a pair of upper and lower face members and a plurality of support members arranged between the pair of face members, a plate-like web arranged vertically or inclined, and an upper end portion of the web A plurality of panel structural members each having a plate-like upper flange extending in one direction and a plate-like lower flange extending in a direction opposite to the first direction from the lower end of the web; Panel floors that are arranged adjacent to each other and connected with substantially the same orientation so that the flanges as well as the lower flanges form substantially the same plane,
A floor material supported on the upper side of the panel floor via a plurality of support legs,
The panel floor structure, wherein the support legs are erected at a plurality of locations on the surface of the upper flange at the intersection of the upper flange and the web. In the panel floor structure in any one of Claims 1-3,
The panel floor structure, wherein the panel floor is made of steel. In the panel floor structure in any one of Claims 1-4,
A panel floor structure, wherein a vibration isolating member is provided between the surface of the upper side member and the support leg.

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