JP2005213789A - Composite material for building, and floor structure and floor construction method using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a composite material for building combining excellent structural characteristics of metal members and excellent vibration performance of wood members while minimizing the increase of a material cost and making the most of the properties and characteristics of wood, and to provide a floor structure or a floor construction method having high structural stability and excellent habitable sound performance using the composite material for building or its components. <P>SOLUTION: The composite material 1 for building is formed by fixing a wooden material 10 in close contact to the longitudinal direction of at least a face on which a floor face material abuts, of an outer surface of the metal member 2 formed in closed cross section. The floor structure is constituted by joining the end of the composite material 1 for building to a wooden beam member perpendicularly to the wooden beam member. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a composite material for building used as a structural member for low-rise buildings, particularly wooden houses, a floor structure using the same, and a floor construction method.

  Conventionally, as a structural member for a floor of a wooden house or the like, a wooden member has usually been used regardless of the conventional shaft assembly method, the frame wall method, or other methods. There are many variations of the floor structure using these wooden members, especially in the conventional frame construction method, for each housing manufacturer (for example, issued by the Japan Housing and Wood Technology Center (former Housing Bureau, Ministry of Construction) Supervised by the wooden house promotion room) “Summary of the 9th Wooden House Rationalization Certification System” (October 1998)) is an important part of structural strength, for example, directly under the outer wall of the floor, directly under the boundary of the room, Use wooden members with large cross-section strength around openings such as around stairs, and use wooden members with a smaller cross-section for the portion of the floor that supports only the load on the floor. And it has a structure that supports the floor. In general, the former is called a large beam, a torso, etc., and the latter is called a floor joist, a small beam.

  By the way, in recent years, the flow of quality deterioration of wooden members has not stopped, and from the viewpoint of housing warranty guarantee and performance securing, wooden members are new in the form of structural laminated materials and structural veneer laminates (LVL). Adoption of members (also called engineering wood) is in progress. However, such materials are expensive (higher cost than conventional materials) or distribution (the number of contractors is limited, the time required from ordering to delivery is long, and emergency response at the construction site is inevitable. It is actually difficult to have problems with

  Against this background, recently, as a material to replace wooden members for residential floor structures, the application of metal profiles that are affordable, stable in quality and product accuracy over the long term has been applied. Proposed. Here, in addition to solving the above-mentioned problems by using a thin metal plate groove-shaped metal profile instead of a conventional wooden member, in addition to this, an attempt is made to improve earthquake resistance and durability. For example, when applying the conventional construction method consisting of large beams and small beams to the floor structure of a general wooden house, a small beam (joist) made of metal is joined to the wooden large beam. Joining with hardware.

  However, in the floor structure in which the metal profiles are arranged, on the contrary, the residential sound of the upper floor (represented by the jumping sound) is downstairs as well as the favorable structure of having a strong structure and high durability. Inappropriate aspects remained easy to communicate. This problem is due to the fact that the vibration damping performance of metal materials, especially metal sheet profiles, is inferior to wood, but the rigidity of thin metal sheet grooves is insufficient. For this reason, it is considered that one of the causes is that the metal profile itself constituting the floor assembly collapses, twists, or bends when an instantaneous impact or load is applied from the upper floor. Such a phenomenon is usually particularly noticeable when the joist length is increased (the span is increased).

In order to solve such a problem, for example, a floor vibration attenuator composed of a weight and a viscoelastic body is attached to a steel member having a C-shaped cross section in the vertical direction so that the lamination direction coincides with the vibration direction. A technique for reducing the vibration of the floor slab has been proposed (for example, see Patent Document 1).
In addition, by forming a lightweight section steel for building materials by integrally providing a coating material having vibration damping or vibration absorption on the surface of a steel material having a groove shape or a lip groove shape in cross section, and using this as a joist, A technique has been proposed in which vibration of joists is suppressed when an impact force is applied to the floor surface, and the impact sound to the downstairs room is reduced (see, for example, Patent Document 2).

Further, in the support structure of the floor support horizontal member that receives the vertical load applied to the horizontal member supporting the floor of the building by the first component fixed to the support member, the second component fixed to the support member is horizontally mounted. A technique has been proposed in which a stable vibration damping effect is obtained by making surface contact with a side surface of a vertical portion of a material (see, for example, Patent Document 3).
In addition, a large number of small beams made of metal shapes arranged in parallel so as to connect between the large beams constituting the metal-shaped material in a predetermined shape and the large beams constituting the frame, which are opposed to each other. And a floor plate joined to the upper surface of the large beam and the small beam, and the impact beam sound level is lowered in a low frequency region by forming the small beam in a hollow cross-section by itself or in combination with the floor plate. Has been proposed (see, for example, Patent Document 4).

Japanese Patent Laid-Open No. 9-328858 (page 2-4, FIGS. 1 to 3) Japanese Patent Laid-Open No. 11-71839 (page 2-3, FIGS. 1-2) Japanese Patent Laid-Open No. 2002-97736 (page 2-3, FIG. 1 to FIG. 2) JP-A-10-325200 (page 2-5, FIG. 1)

In the technique of Patent Document 1, a floor vibration attenuator composed of a weight and a viscoelastic body is provided, and in the technique of Patent Document 2, a coating material having vibration damping or vibration absorption is integrally provided on the surface of a steel material. Since a special material is used, there is a problem of an increase in cost.
Moreover, in the technique of patent document 3, the problem of a raise of construction cost generate | occur | produces by the increase in the number | score of the hardware member of a 1st component and a 2nd component.

  Furthermore, although the technology of Patent Document 4 can suppress an increase in cost at a low level, the cause of the vibration described above can be completely suppressed only by making the beam a hollow cross section (closed cross section). However, if you try to suppress it completely, it will increase the cross-section and increase the thickness of the plate, which will not only make construction difficult due to the increase in weight, but will also cause a significant increase in cost and adverse effects on finishing. Actually, it is difficult to achieve the same vibration performance.

The present invention has been made to solve the above-described problems, and minimizes an increase in material cost and fully utilizes the characteristics and features of wood, so that the excellent structural characteristics and wood of metal members can be obtained. An object of the present invention is to provide a composite material for building having excellent vibration performance of members.
Another object of the present invention is to provide a floor structure having high structural stability and excellent living sound performance using the above-described building composite material, and a floor construction method.

  In the building composite material according to the present invention, a wooden material is closely fixed in the longitudinal direction of at least the surface of the outer surface of a metal member formed in a closed cross section that is in contact with the floor surface.

Further, the above metal member was formed by combining a pair of metal profiles having a substantially U-shaped cross section.
Further, the metal member is formed by a metal profile having a substantially U-shaped cross section and a closing plate that closes an opening of the metal profile.
Further, a vibration-absorbing material was provided on at least one side surface of any one of the metal members.

In addition, the floor structure according to the present invention is configured by joining any of the above-mentioned building composite materials to a wooden beam material orthogonal to the wooden beam material.
Further, the floor construction method according to the present invention is such that the end of one of the metal members is joined to a wooden beam material orthogonally to the wooden beam material, and a wooden material is placed on the upper surface of the metal member. So that the ends are joined to the wooden beam material, and then the floor material is arranged on the wooden material and the wooden beam material so that the floor material and the wooden material are integrally fixed to the metal member. It is a thing.

According to the composite material for building according to the present invention, when a wooden member is used even in a floor support structure for a large span floor, which has been difficult in the past, without significantly increasing the cost of the material and reducing the workability. Excellent residential sound performance can be ensured.
Further, the floor structure or the floor construction method according to the present invention can suppress the deflection and deformation of the floor over a long period of time by using the above-described composite material for building or its constituent members, and can remarkably improve the quality and performance. Can be obtained. Furthermore, since the formation of beams and small beams can be reduced, the effect that the ceiling can be raised is also obtained.

The inventors of the present invention, as a result of earnest and detailed research on vibration characteristics when using metal materials or wooden materials as a structural material for floors, have found that vibration suppression is a weak point of metal profiles. In order to reinforce and supplement the low performance and improve the living sound performance as a floor, it is only necessary to reinforce the suppression performance against vibration by using a composite member with other materials with high vibration absorption performance I found. Furthermore, wood is the most preferable material for this reinforcement because it has good workability, there are no problems in joining with the floor structure surface material, and it is easy to obtain and can reduce costs. It was found that the desired performance can be realized.
In addition, the inventors have confirmed that if the construction composite material according to the present invention is used in accordance with the prior art, the living sound performance can be improved without deteriorating the workability.

The building composite material for floor structures according to the present invention uses a metal member having a closed cross-sectional shape as a basic material. Hereinafter, this metal member will be described in detail.
The metal member according to the present invention is an essential requirement for achieving the purpose of having a closed cross-sectional shape by itself. As mentioned above, since the vibration performance of the floor is affected by the strength of the beam member rigidity, the member itself is required to increase the rigidity of the member and to have sufficient resistance to falling, twisting and bending. In the case of a metal shape having an open cross-section with a U-shape, the cross-sectional dimension is increased (increase in cross-sectional performance).

However, when comparing the section modulus of the closed cross-section shape and the open cross-section shape using the thin lightweight section steel used in the steel house as an example, the Y-axis direction (the web height of the member) is the same (the web height of the member). The section modulus Z in the floor load direction is 140 mm (thickness: 1.2 mm), and the closed section [140BM12 (for the symbol, Japan Iron and Steel Federation, Ministry of Land, Infrastructure, Transport and Tourism) Opening section (140LCN12) for 6.92 cm ^{3 in the} “Guide to Designing Thin and Light-weight Steel Structures” (see Techniques Publishing, June 25, 2002, p104-110) in 1.76 cm ^3, also similarly (140CN12) in 0.992Cm ^3, and the shape of the closed cross-section this has a 4-7 fold stiffness compared to profile the opening cross-section is confirmed It was.

  Furthermore, from this point of view, in the shape of the open section, if the section modulus Z in the Y-axis direction (floor load direction) of the same level as 140BM12 is to be obtained, the shape of the section exceeding 300 mm may be obtained. It cannot catch up. In this case, it is difficult to apply as a practical material, and considering the construction at a reasonable and appropriate cost, it is appropriate and advantageous to use a steel having a closed cross-sectional shape.

  Several methods are conceivable for the construction of the metal member formed in the closed cross section. For example, if a grooved steel, which is a pair of grooved metal profiles, is fitted together relative to the open cross-section side, and the flanges of both grooved steels are joined to form a square shape, the required closed cross-sectional shape A metal member is obtained. In addition, a metal member having a rectangular closed cross-sectional shape may be configured by closing and fixing the open cross-sectional side of one channel steel with a single metal closing plate, and furthermore, an industrially square-shaped metal member may be formed. A metal member having a closed cross-sectional shape may be formed by integrally forming a metal shaped steel.

  Here, the joining of the former two groove-shaped steels or the groove-shaped steel and the metal closing plate is, for example, mechanical welding using screws or caulking, various welding joints including spot welding, or This can be achieved relatively easily by chemical means such as adhesion. In addition, when an industrial square metal shaped steel is integrally formed, a technique such as caulking of the overlapping portion or seam welding can be applied.

As for the material of the metal material used for the metal member of the present invention, a thin steel plate is most suitable in terms of strength and workability, and is a general material in terms of cost, flowability, etc. Various metal materials such as (or aluminum alloy) and titanium may be used.
The strength of the metal material is important because it is related to the strength of the shape steel. However, in practice, it is not necessary to specify the strength in order to realize the object of the present invention. What is thought to be necessary to do this should be examined in advance by calculation, etc., selected and applied. Similarly, there is no problem for the purpose of the present invention even if the surface treatment is not particularly defined.

Furthermore, for the dimensional shape and plate thickness of the metal member of the present invention, if it is satisfied that the above-described closed cross section is satisfied, the dimensions after which the required cross-sectional performance can be obtained after considering the workability, What is necessary is just to manufacture suitably with board thickness, Comprising: It does not need to specifically limit.
In terms of materials, for example, the steel profile described as a light square steel in the Japan Iron and Steel Federation product regulations “Surface treatment thin plate lightweight section for building structures” is a suitable material that can be used without problems. However, regarding this, the cross-sectional performance charts are also prepared in the above-mentioned “Guide for designing thin-walled lightweight steel structures” and are easy to use. Here, a steel material of a grade of 400 Mpa is applied, and the surface treatment includes surface treatment materials such as hot dip galvanizing, hot dip zinc-5% aluminum plating, 55% aluminum galvanizing, etc. It is not limited.

Next, in the building composite material for floor structures according to the present invention, at least the surface (upper flange surface) on the contact surface side with the floor surface material among the outer peripheral surfaces of the metal member having the above-described closed cross-sectional shape. It is important and essential to fix the wood material in close contact over the entire surface in the longitudinal direction so as to form a wood part on the entire surface.
According to the researches of the inventors, in order to sufficiently suppress the deformation of the structural member due to the impact (load) from the floor, the impact force to the metal member is absorbed and a material having a buffering action is applied to the floor. The maximum effect can be achieved by disposing it between the face material and the metal member.

  Even if the wood material is disposed on the other surface of the metal member (both side surfaces and the lower flange surface), a certain degree of effect can be obtained, but the effect does not reach the level expected in the present invention. If you consider the improvement, it must be said that its cost performance is low. However, in addition to the contact surface of the metal member with the floor material, if a wooden material is disposed on the other surface, the effect is synergistic and a very large effect can be exhibited. It will be consistent with the main point. In addition, although the material arrange | positioned on surfaces other than a contact surface with a floor surface material is a suitable material, a material other than a wood material can be applied if it is a material which can exhibit the expected effect. As such a material, for example, a material having a certain strength and durability, such as a rubber material or a resin material, can be considered.

  Next, the tree species (materials) of the above-mentioned woody material is not particularly specified, and other wood species materials as well as timber from timber (matsu, hinoki, tsutsugagi, etc.) conventionally used for construction. There is no problem in achieving the object of the present invention even if a laminated material including a single plate (including a single-plate laminated material, so-called LVL) is used. Here, the performance required for the wood material may be a certain level or more as a structural material. For example, any material may be used as long as it can exhibit the property that wood originally has to suppress vibration due to impact.

Further, the thickness and dimensions of the wood material are not particularly limited. As for the thickness, even if the thickness is small, it is effective for achieving the object of the present invention. In this case, it is realistic to set the thickness within 100 mm.
The dimensions may be adjusted to the dimensions (width and length) of the upper flange surface of the metal member that contacts the wood material, but the width may be slightly smaller than the width of the flange surface of the metal member. Although the effect of the present invention is the same even if the width of the flange surface is slightly larger than the width of the flange surface, the optimum width may be appropriately determined in consideration of cost and workability.

  Various technologies can be applied to the method of joining wooden materials to the surface of metal parts, but considering long-term quality stability, at present, such as joining with bolts, screws, nails, etc. It is certain and desirable to use technology.

Next, the floor structure according to the present invention is configured by connecting the above-mentioned building composite material to a surrounding wooden floor support member (so-called wooden beam material).
As a joining method for connecting the aforementioned building composite material to the surrounding wooden beam material, for example, the back surface of the grooved steel web as a receiving hardware is fixed to the side surface of the wooden beam material, Insert the end of the building composite material into the opening and join it with the upper and lower flanges of the grooved steel with screws, nails, etc., or the angle shape (L shape) fixed to the wooden beam A method of fixing the use of a building composite material via a joint hardware is conceivable, and no special technique is required more than conventional techniques.

  In this case, in order to ensure the living sound performance of the floor, it should be as smooth as possible without causing a level difference between the top surface of the wooden beam and the top surface of the building composite material. It is important to carry out such construction, which is an extremely desirable construction procedure because it eliminates unevenness (unevenness) in the finishing of the flooring material.

In addition, the floor construction method according to the present invention is a construction site where a wooden material is disposed between a metal member having a closed cross-sectional shape and a floor surface material, and is fixed to a wooden beam material by the method described above. Screws, nails and the like are penetrated from the floor material side toward the wooden material and the metal member and fixed integrally. Also in this case, as a result, the same effect as that obtained when the building composite material according to the present invention is used can be obtained.
Hereinafter, embodiments of the present invention will be described in detail.

[Embodiment 1]
1 is a perspective view of a building composite material according to Embodiment 1 of the present invention, FIG. 2 is a longitudinal sectional view of FIG. 1, and FIG. 3 is an exploded perspective view of FIG.
In the figure, reference numeral 1 denotes a building composite material, which is a cross section having lip 43a, 43b, which is a second metal profile, at the opening of a U-shaped grooved steel 3 which is a first metal profile. A substantially U-shaped grooved steel 4 (hereinafter referred to as a lip grooved steel, and in the following description, the grooved steel 3 and the lip grooved steel 4 may be collectively referred to as a substantially U-shaped metal profile. ) And the metal member 2 formed in a closed cross-sectional shape by being inserted in the opening side, and the upper surface of the metal member 2 (the upper surface of the upper flange 32a of the grooved steel 3) are closely fixed integrally. It is comprised with the wood material 10 which consists of a muk lumber.

The grooved steel 3 constituting the metal member 2 has a length L ₁ , a height (because the height of the web 31) is h ₁ , the flanges 32a and 32b have a width w ₁ and a plate thickness t ₁ . The lip channel steel 4 has a length L ₂ , a height (the height of the web 41) h ₂ , the flanges 42 a and 42 a have a width w ₂ , and a plate thickness t ₂ . to the Mizokatachiko 3 by fitting the lip groove-shaped steel 4 constituting the metallic member 2, the dimensions of _{both, L 1 = L 2, w} 1 ≒ w 2, (h 1 -2t 1) ≧ The relationship h ₂ is satisfied.
Further, the wood material 10 has a length of L ₃ , a width of w ₃ , and a thickness of t ₃ , and needs to satisfy the relationship of L ₃ = L ₁ and w ₃ ≈w ₁ .

In forming the metal member 2 having a closed cross-sectional shape by the groove steel 3 and the lip groove steel 4, the opening of the lip groove steel 4 is inserted into and fitted into the opening of the groove steel 3. In this case, Inner height of the web 31 of Mizokatachiko 3 (h ₁ -2t _1), although the relationship between the height h ₂ of the web 41 of the lip groove-shaped steels 4 are as defined above, as far as possible h ₂ Is preferably close to (h ₁ -2t ₂ ). If h ₂ is extremely smaller than (h ₁ -2t ₂ ), the fitting property between the two is lowered and the rigidity of the metal member 2 is adversely affected. Instead of the lip groove steel 4, the same shape groove steel may be used.

  The metal member 2 obtained by fitting the lip groove steel 4 to the groove steel 3 in this way has its upper and lower flange portions 32a and 42a, 32b and 42b fixed with screws 15 or the like, respectively. However, since the upper flange portions 32a and 42a can be fixed at the same time when the wooden material 10 is fixed thereafter, it is not always necessary.

  Next, the wood material 10 is placed on the upper surface (the upper surface of the upper flange 32a of the grooved steel 3) of the metal member 2 configured as described above, from the wood material 10 side toward the upper flange portions 32a and 42a. It is fixed integrally with the screw 15. As a result, the upper flange portions 32a and 42a of the metal member 2 are fixed, and at the same time, the wood material 10 is integrally coupled to complete the building composite material 1. The lower flange portions 32b and 42b of the metal member 2 may be fixed with screws 15 after the wood material 10 is fixed.

The screw 15 used here is not particularly limited. For example, quality confirmation such as a drilling tapping screw defined in JISB 1059-2001 or a “steel house drill screw” defined in the Japan Iron and Steel Federation product regulations is possible. What you can do is desirable. The fastening interval and the number of the screws 15 may be determined by structural calculation. For example, the light weight of the thin plate described in the above “Guide for designing thin and light-weight steel structures” p18-19. The binding method in the case of combining shape steels may be applied as it is.
As for the screw 15 used here, particularly the screw 15 screwed from the wood material 10 side, for example, the shape of the head is made into a dish shape or a flat shape, or a counterbore is provided on the upper surface of the wooden material 5. Thus, it is desirable from the aspect of finishing the flooring material to avoid the protrusion of the wood material from the upper surface as much as possible.

  In the present embodiment, as described above, the wood material 10 excellent in vibration characteristics is closely fixed and integrated with the metal member 2 having a closed cross-sectional shape excellent in rigidity, in particular, bending rigidity, and the composite material is integrated. Since it comprised, it can implement | achieve the building composite material 1 for floor structures which has high rigidity and can fully suppress the vibration by the impact from an upper floor.

[Embodiment 2]
FIG. 4 is a perspective view of a building composite material according to Embodiment 2 of the present invention, and FIG. 5 is a longitudinal sectional view thereof. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
In this embodiment, a closing plate 5 made of a steel plate is brought into contact with the opening of the lip groove steel 4 and joined to the lips 43a and 43b of the lip groove steel 4 by welding or the like, thereby forming a metal member having a closed cross-sectional shape. 2 is constituted.

The closing plate 5 may be joined to the lips 43a and 43b of the lip groove steel 4 by spot welding suitable for joining thin steel plates, but other techniques such as screwing and, in some cases, caulking may be used. May be used.
Then, the wood material 10 is placed on the upper flange 42a of the metal member 2, and is fixed to the upper flange 42a integrally with the screw 15 as in the case of the first embodiment.
Also in the present embodiment, the same operations and effects as in the first embodiment can be obtained.

[Embodiment 3]
FIG. 6 is a perspective view of an architectural composite member according to Embodiment 3 of the present invention, and FIG. 7 is a longitudinal sectional view thereof. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the present embodiment, a square shaped steel shape member 6 manufactured as an industrially integrated one is used as the metal shape member constituting the metal member 2 having a closed cross-sectional shape. The steel shaped member 6 is formed by bending a steel plate into a square steel tube in an industrial continuous production line, and a caulking portion 62 is provided on an outer lower flange 61b. In place of the caulking portion 62, seam welding, resistance welding or other welding means, or in some cases, overlapping portions of the steel plates may be joined by bonding or the like.

The wood material 10 is placed and fixed on the upper flange 61a of the steel profile 6 thus formed. In this case, in the present embodiment, the wooden material 10 is fixed to the steel profile 6 by the nail 16. The nail 16 used here is not particularly limited, but it is desirable that the quality of the nail 16 can be confirmed, such as the “steel house screw nail” in the above-mentioned provisions of the Japan Iron and Steel Federation. The fastening interval and the number of nails 16 should be processed in the same manner as in the first embodiment. In the present embodiment also, the screw 15 may be used instead of the nail 16.
Also in the present embodiment, the same operations and effects as in the first embodiment can be obtained.

[Embodiment 4]
FIG. 8 is a perspective view of the composite material for building according to Embodiment 4, and FIG. 9 is a longitudinal sectional view thereof. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the present embodiment, a metal member 2 having a closed cross-sectional shape is used as a groove-shaped aluminum alloy shape material 7 (hereinafter referred to as an aluminum alloy shape material) which is a first metal shape material. This is formed by fitting an aluminum alloy shaped material 8 which is a shaped material. The dimensional relationship between the two aluminum alloy shaped members 7 and 8 and the wood material 10 is the same as that in the first embodiment. In this case, instead of the groove-shaped second aluminum alloy shaped member 8, a lip-attached aluminum alloy shaped member having a lip at the ends of the flanges 82a and 82b may be used.

  As described above, in the metal member 2, before fixing the wood material 10, the second aluminum alloy shape material 8 is fitted to the first aluminum alloy shape material 7, and both the upper and lower flanges 72 a are connected to each other. 82a, 72b and 82b are fixed together by screws 15 respectively. The screw 15 used here may be the same as the screw 15 used in the first embodiment, but considering the contact with the aluminum alloy, it is desirable that the surface is appropriately subjected to surface treatment such as aluminum plating. In addition, as long as fixing by other than the screw 15 is possible, such as caulking or welding, they may be adopted.

The wood material 10 is placed on the upper flange 72a of the metal member 2 having the closed cross-sectional shape composed of the aluminum alloy shaped members 7 and 8 thus configured, and is fixed by the nail 16 (or the screw 15). The precautions regarding the nail 16 are the same as in the case of the screw 15.
In the present embodiment, substantially the same functions and effects as those of the first embodiment can be obtained, but the building composite material 1 can be further reduced in weight.

[Embodiment 5]
FIG. 10 is a perspective view of a building composite material according to Embodiment 5 of the present invention, and FIG. 11 is a longitudinal sectional view thereof. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the present embodiment, the metal member 2 constituting the metal member 2 having the closed cross-sectional shape is made of the square steel member 6 according to the third embodiment, or a square steel formed integrally. Using the shape member 6 (the latter case is shown in the figure), the wood material 10 is fixed to the upper surface of the upper flange 61a with screws 15 (or nails 16), and the wood material 10a is attached to the lower surface of the lower flange 62b. And are fixed with screws 15 (or nails 16) to constitute the composite material 1 for building.

In this case, the wood materials 10 and 10a fixed to the upper and lower flanges 61a and 61b of the steel profile 6 may be the same tree type and the same thickness, or may be different tree types and different thicknesses. Further, the screws 15 for fixing the wood materials 10 and 10a may be the same as the screws 15 of the first embodiment.
In the above description, the case where the wooden materials 10 and 10a are fixed to the upper and lower flanges 61a and 61b of the illustrated steel profile 6 is shown, but the same applies to the building composite material 1 of the first to fourth embodiments. Further, the wood material 10, 10a may be fixed to the upper and lower flanges.
Even in the present embodiment, the same effect as in the first embodiment can be obtained, but the wood material 10a is also closely fixed to the lower flange 61b surface of the steel profile 6 having the closed cross-sectional shape. The effect can be further improved.

[Embodiment 6]
12 is a perspective view of a building composite material according to Embodiment 6 of the present invention, and FIG. 13 is a longitudinal sectional view thereof. In addition, the same code | symbol is attached | subjected to the same member as Embodiment 3, and description is abbreviate | omitted.
In the present embodiment, the steel member 6 according to the third embodiment or the square steel member 6 formed integrally with the metal member constituting the metal member 2 according to the third embodiment. (The latter case is shown in the figure), and the vibration-absorbing material 11 is bonded to the outer surface of one of the webs. In this case, if the vibration-absorbing material 11 is bonded to the outer surfaces of both webs, the vibration suppression effect is further improved, but a sufficient effect can be obtained with only the outer surface of one web. The case where the vibration-absorbing material 11 is joined to the outer surface of the is shown.

Various materials such as a wood-based material, a rubber-based material, and a resin-based material can be used as the vibration-absorbing material 11, but any material having a vibration-absorbing effect may be used. And you should choose it considering the cost.
For the joining method of the vibration-absorbing material 11 to the metal member 2, an optimum means may be used. For example, screws are used for wood-based materials, adhesion, and adhesion (adhesion), coating, resin-based materials are used for rubber-based materials. If it is material, it can carry out by adhesion | attachment (adhesion) etc. The vibration-absorbing material 11 is optimal if it is continuously joined over the entire length of the metal member 2, but the effect is manifested even if it is not continuous. Can be joined together.

In the above description, the case where the vibration-absorbing material 11 is joined to the metal member 2 made of the square steel member 6 is shown. However, the metal member 2 of the building composite member 1 according to the first to fifth embodiments. A vibration-absorbing material 11 may be provided.
Moreover, although the case where the vibration-absorbing material 11 was joined to the outer surface of the web of the metallic member 2 was shown in the above description, the vibration-absorbing material 11 is attached to the four inner circumferential surfaces (web inner surface, flange inner surface) of the metallic member 2. Even if it joins, the same effect can be acquired.
In the present embodiment, the same effect as in the first embodiment can be obtained, but the vibration suppressing effect can be further improved by bonding the absorbent material 11 to the metal member 2. .

[Embodiment 7]
FIG. 14 is an explanatory diagram of a floor structure according to Embodiment 7 of the present invention.
In the figure, 1 is a building composite material according to Embodiment 1 of the present invention, but is not limited to this, and may be a building composite material according to another embodiment.
Reference numeral 20 denotes a surrounding wooden beam member. On the side surface (the side to which the building composite material 1 is joined), a web 22 of a receiving grooved steel 21 is formed, and the upper surface of the upper flange 23a is connected to the upper surface of the wooden beam member 20. They are abutted so as to be flush with each other, and are fixed together by screws 24. In this case, the receiving channel steel 21 may be provided over the entire length of the wooden beam member 20, but may be provided at a predetermined interval (for example, corresponding to the joining position of the building composite material 1).

The building composite material 1 is disposed orthogonal to the wooden beam member 20, and its end portion is inserted between the upper and lower flanges 23 a and 23 b of the receiving groove steel 21, and the wooden material 10 and the metal member 2 are The lower flange 32b is fixed to the upper and lower flanges 23a, 23b of the receiving grooved steel 21 with screws 24, and is integrally joined.
On the floor structure thus configured, a structural plywood or a similar floor base material 30 is attached as a floor base material. In this case, as shown in FIG. 15, the end of the woody material 10 of the building composite material 1 has a length corresponding to the width of the flange 23a of the receiving groove steel 21 and a depth corresponding to the plate thickness of the flange 23a. If the carved portion 12 is provided by excision to the extent, when the composite material 1 for building is joined to the receiving grooved steel 21 of the wooden beam material 20, these upper surfaces can be flush with each other. Unevenness can be prevented when the ground material 30 is attached, and a floor structure having no problem in the finished surface can be achieved.

  According to the present embodiment, it is possible to obtain a floor structure that has strong bending rigidity, is stable over a long period of time, and can sufficiently suppress vibration caused by an impact on the upper floor.

[Embodiment 8]
FIG. 16 is an explanatory diagram of a floor structure according to Embodiment 8 of the present invention. The same parts as those in the seventh embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the figure, 1 is a building composite material according to Embodiment 3 of the present invention, but is not limited to this, and may be a building composite material according to another embodiment.
In the present embodiment, the end of the building composite material 1 is in contact with the side surface of the wooden beam member 20 at right angles to it, and the upper surface of the wooden beam member 10 is flush with the upper surface of the wooden beam member 20. Both are fixed integrally with a screw 24 using an L-shaped joint metal 25. In this case, both side surfaces of the building composite material 1 may be fixed to the wooden beam member 20 by the joint metal 25, or only one side surface may be fixed depending on the situation.
According to the present embodiment, the same effect as in the seventh embodiment can be obtained, but further, the upper surface of the wooden beam member 20 and the upper surface of the wooden beam member 10 of the building composite material 1 are not subjected to any processing. Construction is easy because it can be easily made flush with each other.

[Embodiment 9]
FIG. 17 is an explanatory diagram of a floor structure according to Embodiment 9 of the present invention. The same parts as those in the seventh embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the figure, 1 is a building composite material according to Embodiment 5 of the present invention, but is not limited to this, and may be a building composite material 1 of another embodiment.

In the present embodiment, similar to the seventh embodiment, the wooden beam member 20 is joined between the upper and lower flanges 23a and 23b of the receiving groove steel 21 joined to the side surface of the wooden beam member 20 over the entire length or at a predetermined interval. The building composite material 1 is inserted orthogonally to the beam member 20, and the upper and lower wooden materials 10, 10 a are integrally fixed to the upper and lower flanges 23 a, 23 b with screws 24. Also in the present embodiment, the carved portion 12 as shown in FIG. 15 is provided at the end of the upper wood material 10 of the building composite material 1 or at the ends of the upper and lower wood materials 10, 10a. For example, the top surfaces of the wooden beam member 20, the receiving groove steel 21 and the woody material 10 of the building composite material 1 can be flush with each other.
Also in the present embodiment, the same effect as in the seventh embodiment can be obtained.

[Embodiment 10]
FIG. 18 is an explanatory diagram of a floor construction method according to Embodiment 10 of the present invention. The same parts as those in the eighth embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the figure, 1 has substantially the same configuration as the building composite material 1 according to Embodiment 3 of the present invention, but is not limited to this, and the building composite material 1 according to other embodiments also includes The present embodiment can be applied.

In this embodiment, when the building composite material 1 is joined to the surrounding wooden beam material 20, first, the metal member 2 to which the wooden material 10 is not joined on the upper surface is orthogonal to the side surface of the wooden beam material 20. Arrange. In this case, when the wooden material 10a is bonded to the lower surface of the metal member 2 as in the fifth embodiment, the vibration-absorbing material 11 is bonded to the side surface of the metal member 2 or the like as in the sixth embodiment. If they are, they are arranged in a bonded state.
Next, the end of the metal member 2 is brought into contact with the side surface of the wooden beam member 20, and is fixed with a screw 24 using a metal fitting 25. At this time, the upper surface of the metal member 2 is positioned below the upper surface of the wooden beam member 20 by the thickness of the wooden material 10.

Next, the wood material 10 is placed on the upper surface of the metal member 2, and the end portion thereof is fixed to the metal joint 25 with the screw 24. At this time, the upper surface of the wooden material 10 is flush with the upper surface of the wooden beam material 20.
In this state, the floor base material 30 is placed on the wooden beam material 20, the wooden material 10, and the wooden beam material 20, and the floor base material 30, the wooden material 10, and the upper flange 61 a of the metal member 2 are jointed by screws 15. Tighten and fix them together. As a result, the building composite material 1 is completed, and at the same time, the attachment of the floor base material 30 is completed.
According to the present embodiment, not only substantially the same effect as in the seventh embodiment can be obtained, but also the floor construction can be simplified and the number of man-hours can be reduced.

Next, an example of a building composite material according to Embodiment 1 of the present invention and a floor structure using the same will be described with reference to FIGS. 1 to 3 and FIG. 14.
The grooved steel 3 which is the first metal profile constituting the metal member 2 of the building composite material 1 has a length L ₁ = 4.55 m, a component (height of the web 31) h ₁ = 204 mm, The upper and lower flanges 32a and 32b have a width w ₁ = 40 mm and a plate thickness t ₁ = 1.6 mm, and the lip groove steel 4 as the second metal profile has a length L ₂ = 4. 0.55 m, height (the height of the web 41) h ₂ = 200 mm, the width w ₂ = 40 mm of the upper and lower flanges 42 a and 42 b, and the thickness t ₂ = 1.6 mm were used. These members were formed by bending a thin steel plate.

Then, the opening side of the lip groove steel 4 is inserted from the opening of the groove steel 3 to form a metal member 2 having a closed cross-sectional shape, and a length L ₃ = 4 is formed on the upper surface of the metal member 2. .55 m, width w ₃ = 40 mm, thickness t ₃ = 33 mm, from the rice bran material provided with the carved engraved portion 12 by removing a portion of 45 mm from the end side at a depth of 1.6 mm at both ends thereof The wood material 10 is placed, and the upper flange 32a, 42a and the lower flange 32b, 42b of the wood material 10 and the metal member 2 are respectively fixed integrally with a plurality of screws 15, and the length is 4.55 m and the width is 40 mm. The composite material 1 for construction having a thickness of 237 mm (only 235 mm at both ends) was constructed.

  Here, the screw 15 which penetrates and joins the upper flanges 32a and 42a of the metal member 2 from the wood material 10 is a countersunk head screw (screw diameter of 4. mm) according to the Japan Iron and Steel Federation rules (steel house drill screw). 8 mm and a screw length of 50 mm) and screwed in two rows at intervals of 300 mm or less, and the screws 15 for fixing the lower flanges 32b and 42b are also flat-head screws ("steel house drill screws"). Similarly, using a screw diameter of 4.8 mm and a screw length of 19 mm, they were fastened in two rows at intervals of 300 mm or less.

  On the other hand, the wooden beam member 20 is made of rice made of 4.55m long, 240mm long and 105mm wide, and 4.55m long and 239mm long (the thickness of the upper and lower flanges 23a and 23b on the side). The inner web of the subtracted web is about 235 mm), the receiving groove steel 21 having a flange width of 40 mm and a plate thickness of 1.6 mm, and the upper surface of the upper flange 23a is flush with the upper surface of the wooden beam member 20, The screws 24 were used for fixing.

  Then, the end portion of the building composite material 1 is inserted between the upper and lower flanges 23a and 23b of the receiving grooved steel 21, and the screw 24 is driven from the upper and lower flanges 23a and 23b. Fixed and joined. At this time, since the carved portion 12 is provided at the end of the wood material 10 of the building composite material 1, the flanges 23 a and 23 b of the receiving groove steel 21 do not protrude, and the building composite material 1, The upper surfaces of the wooden beam member 20 and the receiving groove steel 21 could be made flush. Finally, a floor base material 30 was stretched over these to complete the floor structure.

[Comparative example]
A floor structure according to the present invention configured as described above and a conventional floor structure using a square steel shape as it was were subjected to a drop impact test to measure vibration characteristics and compared.
The drop impact test was performed by dropping a 4 kg weight from a vertical height of 25 cm and measuring the vibration waveform of the floor, and observed the magnitude of the initial vibration and the magnitude of the vibration after a certain period of time.

The measurement results are shown in FIG. As apparent from the figure, the magnitude of the initial vibration in the floor structure according to the present invention is greatly reduced compared to that of the conventional floor structure. However, the displacement of about 0.05 to 0.1 mm remains, whereas the floor structure of the present invention is almost zero.
Thus, it was confirmed that the floor structure using the building composite material 1 according to the present invention has a remarkable vibration suppressing effect as compared with the conventional floor structure.

It is a perspective view of the building composite material which concerns on Embodiment 1 of this invention. It is a longitudinal cross-sectional view of FIG. FIG. 2 is an exploded perspective view of FIG. 1. It is a perspective view of the building composite material which concerns on Embodiment 2 of this invention. It is a longitudinal cross-sectional view of FIG. It is a perspective view of the building composite material which concerns on Embodiment 3 of this invention. It is a longitudinal cross-sectional view of FIG. It is a perspective view of the building composite material which concerns on Embodiment 4 of this invention. It is a longitudinal cross-sectional view of FIG. It is a perspective view of the building composite material which concerns on Embodiment 5 of this invention. It is a longitudinal cross-sectional view of FIG. It is a perspective view of the building composite material which concerns on Embodiment 6 of this invention. It is a longitudinal cross-sectional view of FIG. It is explanatory drawing of the floor structure which concerns on Embodiment 7 of this invention. It is explanatory drawing of the principal part of FIG. It is explanatory drawing of the floor structure which concerns on Embodiment 8 of this invention. It is explanatory drawing of the floor structure which concerns on Embodiment 9 of this invention. It is explanatory drawing of the floor structure which concerns on Embodiment 10 of this invention. It is a diagram which shows the relationship between the time of a floor structure which concerns on this invention, and the conventional floor structure, and an excitation point displacement.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Composite material for construction 2 Metal member 3 Channel steel 4 Lip channel steel 5 Blocking plate 6 Square steel profile 7, 8 Aluminum alloy profile 10, 10a Wood material 11 Vibration-absorbing material 12 Carved part 15 Screw 16 Nail 20 Wooden beam material 21 Receiving channel steel 25 Bonding hardware 30 Floor base material

Claims (6)

  A building composite material for a floor structure, characterized in that a wooden material is closely fixed in the longitudinal direction of at least the surface of the outer surface of the metal member formed in a closed cross section, which is in contact with the floor material.   2. The architectural composite material according to claim 1, wherein the metal member is formed by combining a pair of metal profiles having a substantially U-shaped cross section.   2. The building composite material according to claim 1, wherein the metal member is formed by a metal profile having a substantially U-shaped cross section and a closing plate that closes an opening of the metal profile.   The architectural composite material according to claim 1, wherein a vibration absorbing material is provided on at least one side surface of the metal member.   The floor structure characterized by joining the edge part of the composite material for building in any one of the said Claims 1-4 to the wooden beam material orthogonally to this wood beam material. The end of the metal member according to any one of claims 1 to 4 is joined to the wooden beam material in a direction orthogonal to the wooden beam material, and a wooden material is placed on the upper surface of the metal member. Joining the end to the wooden beam material, and then arranging a floor material on the wooden material and the wooden beam material, and integrally fixing the floor material and the wooden material to the metal member. A characteristic floor construction method.

Images