JP7221508B1 - FLOOR SUPPORT STRUCTURE AND CONSTRUCTION METHOD FOR THEREOF - Google Patents

Abstract

[Problem] In a mini house comprising a house main body and a movable shed that can be moved between a use position protruding through an opening in one side wall of the house and a storage position recessed within the house main body, the movable shed is movable when the movable shed is not used when stored. A storage space for the support platform is secured in a flat space on the outside of the movable shed and inward from the outer edge of the floor body in the moving direction of the movable shed, and a standby space for the movable support base is provided on the floor body of the house body. This eliminates the need for securing, simplifying the structure of the floor body and making it more compact. [Solution] In an apartment complex where the lower surface of an end Be of a large pull beam B, which supports the lower surface of a floorboard by placing it on the upper surface of a raised wall 1s protruding from the side of a reverse beam 1, is supported via a buffer S. In the floor support structure, the shock absorber S includes a thickness-adjustable rubber sheet Sa laid directly on the upper surface of the raised wall 1s, and a beam receiving rubber Sb placed on the upper surface of the rubber sheet Sa. , the beam receiving rubber Sb has an engagement recess Sbo into which the end Be of the large drawing beam B is engaged and placed. [Selection diagram] Figure 1

Description

The present invention relates to a floor support structure in an apartment house, in particular, the frame is made of concrete with reinforced concrete, an inverted beam is provided upward on the floor slab of the frame, and a stepped shape is formed on the side of the inverted beam. The present invention relates to a floor support structure in an apartment house, in which the lower surface of the end of a large pull beam that supports the lower surface of a floorboard is supported on the upper surface of a padded wall via a buffer, and a construction method thereof.

In multi-story housing complexes, a floor support structure in which reverse beams are protruded upward from a floor slab is conventionally known as disclosed in Patent Document 1, for example. In this known floor support structure, in addition to the cushioning material described above, a plurality of supporting metal bases for supporting the cushioning material in a level-adjustable manner are placed directly on the upper surface of the raised wall on the side of the reverse beam. The end portion of the pull-out beam is supported on the raised wall portion via the supporting hardware and the cushioning material so as to be adjustable in height.

JP-A-2004-52504

In the floor support structure of Patent Document 1, in order to stably place the support hardware on the raised wall, it is necessary to construct the raised wall so that the upper surface width thereof is wide (for example, 120 mm or more). Along with this, it is also necessary to arrange reinforcing bars in the wide puddle wall, which causes the problem of increasing the cost and weight of the frame. In addition, since it is a structure in which a part of the foamed heat insulating material sprayed on the upper surface of the raised wall is notched, and the base of the support hardware is placed directly on the upper surface of the raised wall through the notch, this notch is used. There is also the problem of thermal insulation deficiencies.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a floor support structure and a method for constructing the same in collective housing that can solve the above problems of conventional structures with a simple structure.

In order to achieve the above object, the present invention has a frame made of reinforced concrete, an inverted beam projecting upward from the floor slab of the frame, and a stepped shape on the side of the inverted beam. In a floor support structure for a collective housing, in which the lower surface of the end of a large pull beam that supports the lower surface of a floorboard is supported on the upper surface of a shingled wall via a buffer, the buffer is provided on the upper surface of the shingled wall. It comprises a laying rubber sheet whose thickness is adjustable directly laid on the upper surface, and a beam receiving rubber placed on the upper surface of the laying rubber sheet, wherein the beam receiving rubber engages the ends of the large beams, The top surface of the rubber sheet has an engaging recess to be placed thereon, and on the top surface of the rubber sheet, there is an upper side surface on the upper side of the raised wall portion, with one side surface facing the end surface of the large pull beam and the other side surface of the reverse beam. A first feature is that the lower part of the back plate rubber that is adhered to the back plate rubber is fixed, and that a heat insulating material is filled and foamed in the horizontal holes provided in the back plate rubber that are open at both left and right ends .

Further, in the present invention, the frame is made of concrete with reinforcing bars, and on the floor slab of the frame, an inverted beam is protruded upward, and on the upper surface of the raised wall portion formed stepwise on the side of the inverted beam In a floor support structure for a multi-family dwelling in which the lower surface of the end portion of the large pull beam that supports the lower surface of the floorboard is supported via a buffer, the buffer is laid directly on the upper surface of the raised wall. A laying rubber sheet whose thickness is adjustable and a beam receiving rubber placed on the upper surface of the laying rubber sheet are provided, and the beam receiving rubber has an engaging recess for engaging and placing the end of the large beam. and, on the upper surface of the laying rubber sheet, a lower part of a back plate rubber having one side facing the end face of the large pull beam and a heat insulating material sheet joined to the other side is fixed, and the heat insulating material sheet is A second feature is that the side surface opposite to the back plate rubber is adhered to the upper side surface of the reverse beam above the raised wall portion.

In the present invention, the frame is made of concrete with reinforcing bars, an inverted beam is projected upward on the floor slab of the frame, and on the upper surface of the raised wall part formed stepwise on the side of the inverted beam, In a floor support structure in an apartment house, in which the lower surface of the end of the large pull beam that supports the lower surface of the floorboard is supported via a buffer, the buffer has a thickness that is laid directly on the upper surface of the soffit wall. An adjustable laying rubber sheet and a beam receiving rubber placed on the upper surface of the laying rubber sheet are provided, and the beam receiving rubber has an engaging recess for engaging and placing the end of the large pull beam. On the upper surface of the floor rubber sheet, there is a back plate rubber having one side facing the end face of the large pull beam and the other side facing the upper side of the reverse beam above the raised wall portion. A third feature is that the lower portion is fixed, the back plate rubber and the upper side surface of the reverse beam define a gap open at both left and right ends, and the gap is filled and foamed with a heat insulating material. .

Further, according to the present invention, in addition to any one of the first to third features, the laying rubber sheet includes a base rubber sheet and, if necessary, at least one thickness adjusting rubber sheet polymerized and adhered thereto. This is the fourth feature.

In addition to any one of the first to third features of the present invention, the laying rubber sheet includes a base rubber sheet on which the beam receiving rubber sheet is placed and supported, and a lower surface of the base rubber sheet. and at least one thickness-adjusting rubber sheet that is polymerized and adhered in accordance with the above-described A fifth feature is that an engaging stepped portion is provided to engage the lower portion of the back plate rubber and hold it between the upper side surface.

In addition to any one of the first to third features of the present invention, the laying rubber sheet includes a base rubber sheet on which the beam receiving rubber sheet is placed and supported, and a lower surface of the base rubber sheet. and at least one thickness-adjusting rubber sheet that is polymerized and adhered according to the above, the lower surface of the bottom layer thickness-adjusting rubber sheet is directly adhered to the upper surface of the raised wall portion, and the back plate rubber is attached to the base rubber sheet. A sixth feature is integral molding.

In the present invention, the frame is made of concrete with reinforcing bars, an inverted beam is projected upward on the floor slab of the frame, and on the upper surface of the raised wall part formed stepwise on the side of the inverted beam, In a floor support structure in an apartment house, in which the lower surface of the end of the large pull beam that supports the lower surface of the floorboard is supported via a buffer, the buffer has a thickness that is laid directly on the upper surface of the soffit wall. An adjustable laying rubber sheet and a beam receiving rubber placed on the upper surface of the laying rubber sheet are provided, and the beam receiving rubber has an engaging recess for engaging and placing the end of the large pull beam. The laying rubber sheet comprises a base rubber sheet on which the beam receiving rubber sheet is placed and supported, and at least one thickness adjusting rubber sheet polymerized and adhered to the lower surface of the base rubber sheet as required. The lower surface of the bottom layer thickness adjusting rubber sheet is directly adhered to the upper surface of the raised wall portion, and the upper surface of the base rubber sheet has one side facing the end surface of the large beam and the other side facing the A seventh feature is that the lower part of the solid back plate rubber, which is polymerized and adhered to the upper side surface of the reverse beam on the upper side of the raised wall part, is fixed or integrally formed.

In the present invention, the frame is made of concrete with reinforcing bars, an inverted beam is projected upward on the floor slab of the frame, and on the upper surface of the raised wall part formed stepwise on the side of the inverted beam, a rubber sheet whose thickness is adjustable and which is laid directly on the upper surface of the raised wall portion, the lower surface of the end portion of the large pull beam supporting the lower surface of the floor plate being supported via a buffer; A method for constructing a floor support structure in a housing complex comprising a beam receiving rubber placed on an upper surface of a floor rubber sheet, comprising: a first step of constructing the raised wall portion on the side portion of the reverse beam; a second step of adhering the laying rubber sheet to a predetermined position on the upper surface of the raised wall part while adjusting the thickness as necessary; a third step of fixing the lower portion of the back plate rubber and adhering the other side surface of the back plate rubber to the upper side surface of the reverse beam above the raised wall portion; and at least a part of the inner surface of the wall connected to the reverse beam and the upper surface of the floor slab is sprayed with a foamed heat insulating material, and in parallel with the spraying, horizontal holes are provided in the back plate rubber, or a fourth step of filling and foaming the foamable heat insulating material in a gap defined between the opposing surfaces of the back plate rubber and the upper side surface, the gap being open at both left and right ends; An eighth feature is characterized by including at least a fifth step of placing the ends of the large pull beams via rubber.

In the present invention, the frame is made of concrete with reinforcing bars, an inverted beam is projected upward on the floor slab of the frame, and on the upper surface of the raised wall part formed stepwise on the side of the inverted beam, a rubber sheet whose thickness is adjustable and which is laid directly on the upper surface of the raised wall portion, the lower surface of the end portion of the large pull beam supporting the lower surface of the floor plate being supported via a buffer; A method for constructing a floor support structure in a housing complex comprising a beam receiving rubber placed on an upper surface of a floor rubber sheet, comprising: a first step of constructing the raised wall portion on the side portion of the reverse beam; a second step of adhering the laying rubber sheet to a predetermined position on the upper surface of the raised wall part while adjusting the thickness as necessary; The lower part of the back plate rubber having one surface of the heat insulating material sheet joined to the other side surface is fixed, and the other surface of the heat insulating material sheet is adhered to the upper side surface of the reverse beam on the upper side of the raised wall portion. a fourth step of spraying a foamed heat insulating material onto at least a part of the upper surface and side surfaces of the reverse beams, the inner surface of the wall connected to the reverse beams, and the upper surface of the floor slab; A ninth feature is to include at least a fifth step of placing an end portion of the large pull beam via the beam receiving rubber.

Further, in addition to the eighth or ninth feature, the present invention is characterized in that, prior to the fourth step, when the laying rubber sheet and the backing rubber are set on the raised wall portion, the outer side is A curing sheet is attached to each of the upper surface of the laying rubber sheet and the one side surface of the back plate rubber, which are exposed to the surface, and after the execution of the fourth step and before the execution of the fifth step A tenth feature is that the curing sheet is peeled off.

According to the first to third and seventh features of the present invention, on the upper surface of the stepped wall portion formed on the side of the inverted beam on the floor slab, the lower surface of the end portion of the large pull beam for supporting the floor plate In the floor support structure in which the is supported through the shock absorbers, the shock absorbers consist of a rubber sheet with adjustable thickness laid directly on the upper surface of the padded wall, and a beam receiver placed on the upper surface of the rubber sheet. The beam-receiving rubber has an engagement recess for engaging and placing the end of the pull beam. As a result, the floor rubber sheet itself also serves as a level adjusting means, eliminating the need to use a level-adjustable support metal together with the cushioning material as in the conventional structure, thereby simplifying the level-adjusting structure. In addition, the width of the upper surface of the raised wall (that is, the width of the protrusion from the reverse beam of the raised wall) can be adjusted by the conventional supporting hardware while the rubber sheet can be stably placed on the upper surface of the raised wall. Since the width can be reduced compared to the support structure using , there is no need to arrange reinforcing bars in the ridged wall, which can contribute to cost reduction and weight reduction of the frame. Moreover, since the rubber flooring sheet has better heat insulation than the metal material (supporting hardware), even if the rubber flooring sheet is laid on the upper surface of the padded wall, there is no fear of thermal insulation failure .

Moreover, according to the first feature, on the upper surface of the laying rubber sheet, there is a backing adhered to the upper side of the upper side of the raised wall portion, which has one side facing the end face of the large pull beam and the other side being an inverted beam. The lower part of the plate rubber is fixed, and the lateral holes on the back plate rubber, which are open on both the left and right sides, are filled with heat insulating material and foamed. The ends of the beam are pushed by the heat insulating material via the back plate rubber, so that the problem of direct contact between the ends of the beams and the heat insulating material to cause unpleasant floor noise can be effectively prevented. In addition, since the horizontal holes of the back plate rubber can be filled with the foamed heat insulating material and foamed substantially at the same time as the foamed heat insulating material is sprayed on the upper surface and the side surface of the reverse beam, workability at the site is excellent.

According to the second feature, the lower part of the back plate rubber is fixed to the upper surface of the laying rubber sheet, one side of which faces the end face of the ohiki beam and the other side of which is joined to a heat insulating material sheet. The side of the sheet opposite to the back-plate rubber is adhered to the upper side of the reverse beam above the raised wall, so that the back-plate rubber is interposed between the heat insulating material sheet and the beam. Therefore, an effect equivalent to the effect of suppressing floor noise due to the first feature can be achieved. In addition, if a heat insulating material sheet is bonded to the other side of the back plate rubber in advance, it is troublesome to insert the heat insulating material into the back plate rubber or in the gap between the back plate rubber and the upper side of the reverse beam at the construction site. is omitted, and workability at the site is good.

According to the third feature, on the upper surface of the rubber sheet, there is a back plate facing the upper side of the upper side of the raised wall portion, with one side facing the end face of the large pull beam and the other side facing the reverse beam. The lower part of the rubber is fixed, and the gap between the left and right ends is defined by the back plate rubber and the upper side surface of the inverted beam. By interposing between the ohiki beams, it is possible to achieve an effect equivalent to the effect of suppressing floor noise due to the first feature. In addition, the gap defined between the back plate rubber and the upper side surface of the reverse beam can be filled and foamed with the heat insulating material substantially at the same time as the foamed heat insulating material is sprayed on the upper surface and side surfaces of the reverse beam. Therefore, on-site workability is good.

According to a fourth feature, in any one of the first to third features, the laying rubber sheet comprises a base rubber sheet and, if necessary, at least one thickness adjusting rubber sheet polymerized and adhered thereto. Therefore, even if there are variations in the upper surface level of the padded wall, it is possible to support the beam-receiving rubber sheet and, by extension, the large beam at an appropriate level by selecting and using a thickness-adjusting rubber sheet polymerized and adhered to the base rubber sheet. Moreover, the on-site workability of the level adjustment is good.

According to a fifth feature, in any one of the first to third features, the upper surface of the base rubber sheet of the laying rubber sheet is engaged with the lower part of the back plate rubber and is between the upper side surface of the reverse beam. Therefore, the lower part of the back plate rubber can be accurately positioned and sandwiched between the engagement step on the upper surface of the base rubber sheet and the upper side surface of the reverse beam. The support strength of the plate rubber can be increased, and workability at the site can be improved.

According to the sixth feature, in any one of the first to third features, the back plate rubber is integrally formed on the base rubber sheet of the floor rubber sheet, so that the back plate rubber and the base for suppressing floor noise are formed. By integrating with the rubber sheet, that is, by making it into a single component, the cost can be reduced, and the handling is simplified, thereby further improving the field workability.

According to the seventh feature, the upper surface of the base rubber sheet is overlaid and adhered to the upper side surface of the upper side of the raised wall portion, which has one side surface facing the end surface of the large pull beam and the other side surface of the reverse beam. Since the lower part of the solid back plate rubber is fixed or molded integrally, it is necessary to form the solid back plate rubber thicker to exhibit the heat insulation function, and to arrange the heat insulating material at the position corresponding to the back plate rubber. There is no need for such a method, and on-site workability is good.

According to the eighth feature, a first step of constructing the raised wall portion on the side of the inverted beam, and a second step of laying a rubber sheet at a predetermined position on the upper surface of the raised wall portion and adhering it while adjusting the thickness as necessary. 2nd step and 3rd step of fixing the lower part of the back plate rubber whose one side can face the end face of the large pull beam on the laying rubber sheet, and bonding the other side of the back plate rubber to the upper side of the reverse beam. Then, a foamed heat insulating material is sprayed on at least a part of the upper surface and side surface of the reverse beam, the inner surface of the wall body connected to the reverse beam, and the upper surface of the floor slab, and in parallel with the spraying, the back plate rubber A fourth step of filling and foaming a foamable heat insulating material in the horizontal hole provided in the back plate rubber and the gap between the opposing surfaces of the upper side surface and the rubber sheet on the floor through the beam receiving rubber. Since at least the fifth step of placing the ends of the pull beams is included, the construction work of the floor support structure having the first or third feature can be efficiently and easily performed.

According to the ninth feature, instead of the third step of the eighth feature, one side of the rubber sheet faces the end face of the large pull beam and the other side is joined to one side of the insulating sheet. While fixing the lower part of the back plate rubber, the other surface of the heat insulating material sheet is adhered to the upper side surface of the inverted beam, and in the subsequent fourth step, simply the upper surface and side surface of the inverted beam, the inner surface of the wall and the upper surface of the floor slab Since it suffices to simply spray the foamed heat insulating material against the floor support structure, the work of constructing the floor support structure having the second feature can be performed efficiently and easily.

According to the tenth feature, before the fourth step, the rubber flooring sheet serves as an outwardly exposed surface when the rubber flooring sheet and the back plate rubber are set on the raised wall portion. A curing sheet is attached to the upper surface of the back plate rubber and the one side surface of the back plate rubber, respectively, and the curing sheet is peeled off after the execution of the fourth step and before the execution of the fifth step . In the construction work of the floor support structure having the characteristic, when the foamed heat insulating material is sprayed on the upper surface and the side surface of the reverse beam, the sprayed heat insulating material is prevented from adhering to the exposed surface, Therefore, the work of removing the adhering excess heat insulating material after the spraying work can be omitted, and workability at the site is good.

FIG. 1 is a cross-sectional view of a main part of an apartment house including a floor support structure according to a first embodiment of the present invention; Enlarged cross-sectional view of the 2X arrow part of FIG. FIG. 2 is an exploded perspective view of a buffer that is a main part of the floor support structure according to the first embodiment; Process drawing showing an example of the construction procedure of the floor support structure according to the first embodiment FIG. 3 is an exploded perspective view corresponding to FIG. 3 showing a modified example of the first embodiment in which a curing sheet is attached to the base rubber sheet and the back plate rubber; Principal part cross-sectional view of the floor support structure according to the second embodiment (a view corresponding to FIG. 2) Principal part cross-sectional view of the floor support structure according to the third embodiment (a view corresponding to FIG. 2) Principal part cross-sectional view of the floor support structure according to the fourth embodiment (a view corresponding to FIG. 2)

First to fourth embodiments of the present invention will be sequentially described below based on preferred examples of the present invention shown in the accompanying drawings. First, FIGS. 1 to 5 show a first embodiment and its modification.

The building frame F, which constitutes the framework of the housing complex, is made of reinforced concrete, and as is clear from FIG. A plurality of wall bodies FW extending vertically to integrally connect between them, and frame columns (not shown) formed integrally with the wall bodies FW and extending vertically to integrally connect the upper and lower floor slabs FS. Prepare.

On the floor slab FS, an inverted beam 1 extending vertically and horizontally in a plan view and integrally continuing with the wall FW and the frame column is integrally projected upward. It extends upward from a reverse beam 1 projecting from the slab FS and integrally continues to the upper floor slab FS. Thus, on the floor slab FS of the lower layer of each floor, a flat underfloor space 2 having a rectangular shape in a plan view is defined between the inverted beams 1 extending vertically and horizontally.

Also referring to FIG. 2 , the reverse beam 1 integrally continuing to the wall body FW serving as the outer wall of the frame F has a stepped shape on the side facing the underfloor space 2 . The raised wall portion 1s lower than the upper end height is constructed in the same process as or in a different process from the reverse beam 1 construction process. In addition, although the puffed wall portion 1s is made of plain concrete in the embodiment, it may be made of concrete in which reinforcing bars are embedded as necessary.

On the upper surfaces of the pair of squat wall portions 1s arranged side by side with the underfloor space 2 therebetween, the lower surfaces of a pair of end portions Be of a plurality of pull beams B extending parallel to each other for mounting and supporting the lower surface of the floor plate 4 are formed. , and buffers S, and the upper surface of the floorboard 4 faces an interior space 9 partitioned by the wall FW. A plurality of joists 3 are laid on the hoisting beams B and extend perpendicularly and parallel to each other. supported on beam B;

The upper surface and side surface of each reverse beam 1 (therefore also the upper surface and side surface of the raised wall portion 1s), the inner surface of the wall body FW continuing to the reverse beam 1, and at least a partial area of the floor slab FS (for example, from the reverse beam 1 A foamed heat insulating material D (e.g., foamed polyurethane) is sprayed to a predetermined thickness on the upper surface of the relatively close area) at the construction site to cover and fix it.

The surface of the heat insulating material D covering the inner surface of each wall FW is covered with a finishing wall 7 for interior use, with a predetermined gap 6 defined by the spacer 5 interposed therebetween. A skirting board 8 is joined to the upper surface of the end portion of the floor board 4 so as to be adjacent to and serve as both a border and a decoration.

In FIGS. 1 and 2, the outer end portion of the large pull beam B (that is, the end portion Be on the outer wall side of the frame F) is cushioned on the raised wall portion 1s provided on the side of the reverse beam 1 on the outer wall side of the frame F. Although an example of a structure supported via the body S is illustrated, a similar support structure (not illustrated) is employed for the other end Be of the pull beam B as well. However, if the other end Be is supported on the raised wall 1s on the side of the reverse beam 1 far from the outer wall of the frame F, the side of the reverse beam 1 far from the outer wall, etc. Alternatively, in order to enhance the heat insulation effect between the adjacent indoor spaces 9, the reverse beam 1 on the outer wall side and the foam heat insulation similar to the wall body FW The material D may be sprayed as required.

2 and 3, the cushioning body S is entirely made of a rubber material, and as is clear from FIGS. A main part is a beam receiving rubber Sb which is placed in contact with the upper surface of the laying rubber sheet Sa.

The beam receiving rubber Sb has a shallow groove-like engaging recess Sbo for engaging and mounting the end Be of the pulling beam B, and the end Be of the pulling beam B is placed in the engaging recess Sbo. In the engaged and mounted state, the relative movement of the beam receiving rubber Sb and the pull beam B in the lateral direction (that is, the direction orthogonal to the pull beam B) is restricted.

The laying rubber sheet Sa consists of a base rubber sheet 10 on which the lower surface of the beam receiving rubber Sb is directly placed and supported, and at least one thickness adjusting rubber sheet polymerized and adhered c1 to the lower surface of the base rubber sheet 10 as necessary. 11 and 12. That is, as is clear from FIG. 2, the upper surface of the thickness-adjusting rubber sheet 12 of the uppermost layer is superimposed and adhered c1 to the lower surface of the base rubber sheet 10, and the lower surface of the thickness-adjusting rubber sheet 11 of the lowermost layer is a raised wall portion. 1s is directly adhered c2, and the thickness adjusting rubber sheets 11 and 12 overlapping each other are also adhered c3.

In the embodiment, a plurality of types (four types in the illustrated example) of thickness adjusting rubber sheets 11 to 14 having different thicknesses are prepared in advance, and one of these first to fourth thickness adjusting rubber sheets 11 to 14 At least one (first and second thickness adjusting rubber sheets 11 and 12 in the illustrated example) is selected, and the thickness of the laying rubber sheet Sa is adjusted on-site (thus, the beam receiving rubber Sb, and by extension the large beam B height adjustment) can be arbitrarily performed.

This is because the upper surface height of the puffed wall portion 1s is expected to vary slightly depending on the construction site. Therefore, even if the variation occurs, the thickness of the spread rubber sheet Sa should be adjusted ( Therefore, the adjustment of the height of the beam receiving rubber Sb) can be performed easily and quickly.

On the upper surface of the floor rubber sheet Sa (more specifically, the upper surface of the base rubber sheet 10), the lower part of the back plate rubber Sc1 is fixed whose one side surface (the right side surface in FIG. 2) faces the end surface Bef of the large pull beam B. be done. The one side surface of the back plate rubber Sc1 and the end surface Bef of the large pull beam B may be brought into contact with each other as shown in the figure, or they may face each other across a small gap (not shown).

The other side surface (the left side surface in the illustrated example) of the back plate rubber Sc1 is adhered c4 to the upper side surface 1uf of the reverse beam 1 on the upper side of the raised wall portion 1s. In particular, the upper surface of the base rubber sheet 10 of the embodiment is integrally formed with an engaging stepped portion 10k for engaging the lower portion of the back plate rubber Sc1. The engaging stepped portion 10k can be fixed without an adhesive by sandwiching the lower portion of the back plate rubber Sc1 between the engaging stepped portion 10k and the upper side surface 1uf of the reverse beam 1. As shown in FIG.

In the back plate rubber Sc1, a plurality of horizontal holes Sc1h that are open at both left and right ends are formed vertically in parallel. Each of the horizontal holes Sc1h is filled with the same heat insulating material D as the foam heat insulating material D sprayed on the upper surface/side surface of the reverse beam 1 and the side surface of the wall FW, and is foamed and solidified.

Next, operation of the first embodiment will be described.

Construction of the floor support structure of the collective housing according to the first embodiment is performed, for example, as illustrated in FIG. A plain puffed wall portion 1s is constructed.
[2] In the second step, as is clear from FIG. 4(B), a spread rubber sheet consisting of a base rubber sheet 10 and arbitrarily selected thickness adjusting rubber sheets 11 and 12 is placed at a predetermined position on the upper surface of the raised wall portion 1s. The lower surface of Sa (specifically, the lower surface of the lowermost first thickness adjusting rubber sheet 11) is adhered c2. At this time, the thickness of the laying rubber sheet Sa is adjusted as necessary (in other words, it is appropriately selected from among the first to fourth thickness adjusting rubber sheets 11 to 14 having different thicknesses), and the base rubber sheets 10 overlapping each other are adjusted. And the joint surfaces of the selected thickness adjusting rubber sheets 11 and 12 are adhered c1 and c3, respectively.
[3] In the third step, as is clear from FIG. 4(C), the engaging stepped portion 10k on the laying rubber sheet Sa is provided with a back plate rubber Sc1 whose one side surface can face the end face Bef of the beam B. , and the other side surface of the back plate rubber Sc1 is adhered c4 to the upper side surface 1uf of the reverse beam 1 above the raised wall portion 1s.
[4] In the fourth step, as is clear from FIG. 4(D), at least a portion of the top surface and side surface of the reverse beam 1, the inner surface of the wall FW continuing to the reverse beam 1, and the top surface of the floor slab FS. In parallel with the spraying, the foamable heat insulating material D is filled in the horizontal holes Sc1h provided in the back plate rubber Sc1 and foamed.
[5] In the fifth step, as shown in FIGS. 4(D) and 4(E), the end Be of the large beam B is placed on the spread rubber sheet Sa via the beam receiving rubber Sb. In this case, as shown in (D), the beam receiving rubber Sb is preliminarily engaged with and held by the lower surface of the end Be of the large pulling beam B, and the beam receiving rubber Sb is laid on the rubber sheet Sa together with the large pulling beam B. Alternatively, the beam receiving rubber Sb may be spread and placed on the rubber sheet Sa, and then the large beam B may be placed thereon.
The first to fifth steps described above are carried out by sequentially executing them in this order.

Therefore, according to the construction procedure described above, the construction work of the floor support structure according to the first embodiment can be performed efficiently and easily.

By the way, in the construction procedure described above, prior to the fourth step, the upper surface of the laying rubber sheet Sa, which becomes an exposed surface when the laying rubber sheet Sa and the back plate rubber Sc1 are set on the raised wall portion 1s, and It is desirable to attach the curing sheets Ya and Yc to one side of the back plate rubber Sc1 in advance (for example, at the factory shipment stage) as illustrated in FIG.

In the example of the construction procedure shown in FIG. 4, the cushioning material S in which the curing sheets Ya and Yc are attached in advance to the upper surface of the laying rubber sheet Sa and one side surface of the back plate rubber Sc1 (see FIG. 4 ( C)) is shown. In this case, it is desirable to remove the curing sheets Ya and Yc (see FIG. 4(D)) after the fourth step and before the fifth step.

By doing so, when the foamed heat insulating material D is sprayed onto the upper and side surfaces of the reverse beam 1, the adherence of the sprayed heat insulating material D to the exposed surfaces is the curing effect of the curing sheets Ya and Yc. Therefore, it is possible to omit the work of removing the excess heat insulating material D adhering to the exposed surface during the spraying work after the spraying work, and the field workability is good.

According to the first embodiment described above, the lower surface of the end portion Be of the floorboard supporting beam B is placed on the upper surface of the stepped wall portion 1s formed on the side portion of the reverse beam 1 on the floor slab FS. In the floor support structure supported via the cushioning body S, the cushioning body S is placed on the upper surface of the spread rubber sheet Sa whose thickness is adjustable and which is laid directly on the upper surface of the raised wall part 1s. The beam receiving rubber Sb has an engaging concave portion Sbo for engaging and placing the end portion Be of the large pulling beam B. As shown in FIG.

As a result, the floor rubber sheet Sa itself serves also as a level adjusting means, so that there is no need to use a level-adjustable support metal together with a cushioning material as in the conventional structure, so that the level adjusting structure can be simplified. . In addition, the width of the upper surface of the raised wall portion 1s (that is, the width of the raised wall portion 1s overhanging from the reverse beam 1) can be adjusted to the conventional Since the width can be reduced compared to a support structure using support hardware such as the above, there is no need to arrange reinforcing bars in the puff wall portion 1s, which can contribute to cost reduction and weight reduction of the frame. Moreover, since the floor rubber sheet Sa has better heat insulation than a metal material (supporting hardware), even if the floor rubber sheet Sa is laid on the upper surface of the puff wall 1s, there is no fear of heat insulation failure.

Further, according to the first embodiment (the same applies to the second to fourth embodiments described later), the spread rubber sheet Sa includes a base rubber sheet 10 and at least one thickness adjusting rubber polymerized and adhered to the base rubber sheet 10 as necessary. Since the sheets 11 and 12 are included, even if there is a variation in the upper surface level of the puffed wall portion 1s, the beam receiving rubber Sb, and eventually the beam receiving rubber Sb, can be obtained by appropriately selecting the thickness adjusting rubber sheets 11 to 14 that are polymerized and adhered to the base rubber sheet 10. The pull beam B can be supported at an appropriate level, and the workability of the level adjustment on site is good.

In addition, on the upper surface of the laying rubber sheet Sa, the lower part of the back plate rubber Sc1 is fixed, one side of which faces the end face Bef of the beam B and the other side of which is adhered to the upper side 1uf of the inverted beam 1, A heat insulating material D is filled and foamed in horizontal holes Sc1h which are open at both left and right ends provided in the back plate rubber Sc1. As a result, even if the beam B is slightly displaced due to the impact of an earthquake or the like, the beam end Be is pushed by the heat insulating material D via the back plate rubber Sc1. The problem of direct contact with the material D to cause unpleasant floor noise can be effectively suppressed in advance.
In addition, the lateral holes Sc1h of the back plate rubber Sc1 can be filled with the foamed heat insulating material D and foamed substantially at the same time as the foamed heat insulating material D is sprayed onto the upper surface and side surfaces of the reverse beam 1, so that workability at the site is improved. Good.

Moreover, the laying rubber sheet Sa of the embodiment includes a base rubber sheet 10 on which the beam receiving rubber Sb is placed and supported, and at least one thickness adjusting rubber sheet polymerized and adhered to the lower surface of the base rubber sheet 10 as necessary. 11 and 12, the lower surface of the bottom layer thickness adjusting rubber sheet 11 is directly adhered to the upper surface of the raised wall portion 1s, and the upper surface of the base rubber sheet 10 is engaged with the lower portion of the back plate rubber Sc1. An engaging stepped portion 10k is provided between the upper side surface 1uf of the reverse beam 1 and the engaging stepped portion 10k. As a result, the lower portion of the back plate rubber Sc1 can be accurately positioned, sandwiched and fixed between the engaging stepped portion 10k on the upper surface of the base rubber sheet 10 and the upper side surface 1uf of the inverted beam 1, thereby supporting the back plate rubber Sc1. While increasing strength, workability on site can also be improved.

A second embodiment of the present invention will now be described with reference to FIG. In this second embodiment, on the upper surface of the rubber laying sheet Sa, one side surface faces the end surface Bef of the large pull beam B, and the other side surface is bonded with a strip-shaped heat insulating material sheet Ds (polymerization, adhesion in the embodiment). ), the lower portion of the back plate rubber Sc2 is fixed. The heat insulating material sheet Ds is adhered to the upper side surface 1uf of the reverse beam 1 on the side opposite to the back plate rubber Sc2.

The construction procedure of this second embodiment is basically the same as the first to fifth steps of the first embodiment. Then, the lower part of the back plate rubber Sc2 having one side surface facing the end surface Bef of the large pull beam B and the other side surface joined to one surface of the heat insulating material sheet Ds is fixed on the laying rubber sheet Sa, and the heat insulating material sheet Ds The other surface of the foam insulation D It is enough to spray As described above, in the fourth step of the second embodiment, the heat insulating material sheet Ds is previously joined to the other side surface of the back plate rubber Sc2 (that is, before the foamed heat insulating material D is sprayed). The operation of spraying the expandable heat insulating material D onto the side surface or the like is simplified.

Other configurations of the second embodiment are the same as those of the first embodiment. The above description is omitted.

Therefore, in the second embodiment as well, it is possible to achieve basically the same effects as in the first embodiment. By interposing between the large pull beams B, an effect equivalent to the effect of suppressing floor noise described above in the first embodiment can be achieved. In addition, if a heat insulating material sheet Ds is previously bonded to the other side surface of the back plate rubber Sc2, the heat insulating material is charged (that is, sprayed) between the back plate rubber Sc2 and the upper side surface 1uf of the reverse beam 1 at the construction site. This saves time and effort, and improves on-site workability.

A third embodiment of the present invention will now be described with reference to FIG. In the third embodiment, as in the first embodiment, the upper surface of the laying rubber sheet Sa has one side surface facing the end surface Bef of the large pull beam B and the other surface surface facing the upper side surface 1uf of the reverse beam 1. Although the lower part of the back plate rubber Sc3 is fixed, a plurality of laterally extending groove-shaped concave portions are formed in parallel vertically on the one side surface of the back plate rubber Sc3 of the third embodiment. Therefore, between the opposing surfaces of the back plate rubber Sc3 and the upper side surface 1uf of the reverse beam 1, a plurality of gaps 20 open at both left and right ends corresponding to the internal spaces of the plurality of groove-shaped recesses are vertically arranged. defined by Then, the gap 20 is filled with a heat insulating material D and foamed.

The construction procedure of this third embodiment is basically the same as the first to fifth steps of the first embodiment. A foamable heat insulating material D is filled and foamed in the gap 20 defined by .

Other configurations of the third embodiment are the same as those of the first embodiment. The above description is omitted.

Therefore, in the third embodiment as well, it is possible to achieve basically the same effects as in the first embodiment. 1uf defines a gap 20 with both left and right ends open, and the gap 20 is filled with the heat insulating material D and foamed. , an effect equivalent to the effect of suppressing floor noise according to the first embodiment can be achieved. In addition, the gap 20 defined between the back plate rubber Sc3 and the upper side surface 1uf of the reverse beam 1 is filled with the heat insulating material D substantially at the same time as the foamed heat insulating material D is sprayed onto the upper surface and side surfaces of the reverse beam 1. , it can be foamed, so the field workability is good.

A fourth embodiment of the present invention will now be described with reference to FIG. In the fourth embodiment, the structure of the laying rubber sheet Sa is the same as in the first embodiment, and the bottom surface of the bottom layer thickness adjusting rubber sheet 11 is directly adhered to the top surface of the raised wall portion 1s. In the fourth embodiment, on the upper surface of the base rubber sheet 10, there is a solid strip-shaped sheet having one side facing the end face Bef of the large pull beam B and the other side being overlapped and adhered to the upper side 1uf of the reverse beam 1. The lower part of the back plate rubber Sc4 is fixed. The fixing structure is the same as in the first to third embodiments, and the lower portion of the back plate rubber Sc4 is held between the engaging step portion 10k on the upper surface of the base rubber sheet 10 and the upper side surface 1uf of the inverted beam 1. fixed by

Other configurations of the fourth embodiment are the same as those of the first embodiment. The above description is omitted.

Therefore, in the fourth embodiment, it is possible to achieve basically the same effects as in the first embodiment. Since the lower part of the solid back plate rubber Sc4, which faces the end surface Bef of the pull beam B and has the other side face superposed and bonded to the upper side face 1uf of the inverted beam 1, is fixed, this solid back plate rubber Sc4 is fixed. By making it thicker and exhibiting a heat insulating function, it is not necessary to arrange the heat insulating material D at the position corresponding to the back plate rubber Sc4, and the workability at the site is good.

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments, and various design changes are possible without departing from the scope of the invention.

For example, in the first to fourth embodiments, the rear plate rubbers Sc1 to Sc4, which are separate parts, are fixed on the base rubber sheet 10 of the floor rubber sheet Sa by post-installation. As modifications of the fourth embodiment, although not shown, the back plate rubbers Sc1 to Sc4 are integrally formed on the base rubber sheet 10 to make the base rubber sheet 10 and the back plate rubbers Sc1 to Sc4 into a single part. may be implemented as an embodiment of the present invention. In these modifications, the rear plate rubbers Sc1 to Sc4 for suppressing floor noise and the base rubber sheet 10 are integrated, that is, made into a single part, thereby simplifying the handling of the shock absorber S and further improving the field workability. become good.

In the above embodiment, a frame member having a Σ-shaped cross section was exemplified as the pulling beam B. shaped frame, etc.) can be implemented.

In the above embodiment, the lower surface of the beam receiving rubber Sb is placed in non-bonded contact with the upper surface of the laying rubber sheet Sa (that is, the upper surface of the base rubber sheet 10). The lower surface of the beam receiving rubber Sb may be adhered to the upper surface (that is, the upper surface of the base rubber sheet 10).

Further, in the above-described embodiment, the lower portions of the back plate rubbers Sc1 to Sc3 are engaged with the engaging stepped portion 10k provided on the upper surface of the base rubber sheet 10, and are sandwiched between the upper side surface 1uf of the inverted beam 1. 1 shows that the lower portions of the back plate rubbers Sc1 to Sc3 are fixed onto the base rubber sheet 10 without an adhesive. Part 10k is not essential. For example, the engagement stepped portion 10k may be omitted and the lower portions of the back plate rubbers Sc1 to Sc3 may be fixed onto the base rubber sheet 10 by adhesion.

When the engagement stepped portion 10k is omitted as described above, the upper surface of the base rubber sheet 10 becomes a flat surface without unevenness or stepped portions. In this case, the lower surface of the beam receiving rubber Sb is placed or adhered to the flat upper surface of the uppermost adjustment rubber sheet (for example, the second adjustment rubber sheet 12). be.

B: Large beam Be: One end portion Bef as an end portion D: End face D: Heat insulating material Ds: Heat insulating material sheet F... Frame FS Floor slab FW Wall S Buffer Sa Laying rubber sheet Sb Beam receiving rubber Sbo Engagement recesses Sc1 to Sc4 Back plate rubber Sc1h in the first to fourth embodiments Horizontal holes Ya, Yc Curing sheet 1 Inverted beam 1s Puff Wall portion 1uf . . . . First to fourth adjustment rubber sheets 20 as adjustment rubber sheets ..... Gap

Claims (10)

The frame (F) is made of reinforced concrete, and a reverse beam (1) is projected upward on the floor slab (FS) of the frame (F), and the side of the reverse beam (1) is stepped. The lower surface of the end (Be) of the large pull beam (B) that supports the lower surface of the floor plate (4) is supported via the buffer (S) on the upper surface of the raised wall (1s) formed in In the floor support structure in collective housing,
The cushioning body (S) consists of a rubber sheet (Sa) with adjustable thickness laid directly on the upper surface of the puffed wall (1s), and a beam receiver placed on the upper surface of the rubber sheet (Sa). and rubber (Sb),
The beam receiving rubber (Sb) has an engaging recess (Sbo) for engaging and mounting the end (Be) of the large beam (B),
On the upper surface of the laying rubber sheet (Sa), one side faces the end face (Bef) of the large beam (B) and the other side is the reverse beam (1), from the raised wall (1s) The lower part of the back plate rubber (Sc1) adhered to the upper side surface (1uf) on the upper side is fixed, and the heat insulating material (D) is inserted in the horizontal holes (Sc1h) provided in the back plate rubber (Sc1), which are open at both left and right ends. A floor support structure in an apartment complex characterized by being filled and foamed . The frame (F) is made of reinforced concrete, and a reverse beam (1) is projected upward on the floor slab (FS) of the frame (F), and the side of the reverse beam (1) is stepped. The lower surface of the end (Be) of the large pull beam (B) that supports the lower surface of the floor plate (4) is supported via the buffer (S) on the upper surface of the raised wall (1s) formed in In the floor support structure in collective housing,
The cushioning body (S) consists of a rubber sheet (Sa) with adjustable thickness laid directly on the upper surface of the puffed wall (1s), and a beam receiver placed on the upper surface of the rubber sheet (Sa). and rubber (Sb),
The beam receiving rubber (Sb) has an engaging recess (Sbo) for engaging and mounting the end (Be) of the large beam (B),
On the upper surface of the laying rubber sheet (Sa), a back plate rubber (Sc2) having one side facing the end face (Bef) of the large pull beam (B) and a heat insulating material sheet (Ds) joined to the other side. The lower portion of the heat insulating sheet (Ds) is fixed, and the side surface opposite to the back plate rubber (Sc2) is the upper portion of the reverse beam (1) above the raised wall portion (1s). A floor support structure in an apartment building , characterized in that it is glued on the sides (1uf). The frame (F) is made of reinforced concrete, and a reverse beam (1) is projected upward on the floor slab (FS) of the frame (F), and the side of the reverse beam (1) is stepped. The lower surface of the end (Be) of the large pull beam (B) that supports the lower surface of the floor plate (4) is supported via the buffer (S) on the upper surface of the raised wall (1s) formed in In the floor support structure in collective housing,
The cushioning body (S) consists of a rubber sheet (Sa) with adjustable thickness laid directly on the upper surface of the puffed wall (1s), and a beam receiver placed on the upper surface of the rubber sheet (Sa). and rubber (Sb),
The beam receiving rubber (Sb) has an engaging recess (Sbo) for engaging and mounting the end (Be) of the large beam (B),
On the upper surface of the laying rubber sheet (Sa), one side faces the end face (Bef) of the large beam (B) and the other side is the reverse beam (1), from the raised wall (1s) The lower part of the back plate rubber (Sc3) facing the upper side surface (1uf) on the upper side is fixed, and the left and right ends are opened by the back plate rubber (Sc3) and the upper side surface (1uf) of the inverted beam (1). A floor support structure in an apartment house, characterized in that a gap (20) is defined, the gap (20) being filled and foamed with an insulating material (D). 2. A method according to claim 1, characterized in that said floor rubber sheet (Sa) comprises a base rubber sheet (10) and at least one thickness adjusting rubber sheet (11, 12) polymerized and adhered thereto as necessary. 4. A floor support structure for a housing complex according to any one of 1 to 3 . The laying rubber sheet (Sa) comprises a base rubber sheet (10) on which the beam receiving rubber (Sb) is placed and supported, and at least one rubber sheet (10) polymerized and adhered to the lower surface of the base rubber sheet (10) as required. thickness-adjusting rubber sheets (11, 12), and the lower surface of the lowermost thickness-adjusting rubber sheet (11) is directly adhered to the upper surface of the raised wall (1s),
The upper surface of the base rubber sheet (10) is provided with an engaging stepped portion (10k) that engages the lower portion of the back plate rubber (Sc1 to Sc3) and is sandwiched between the upper side surface (1uf). The floor support structure in a collective housing according to any one of claims 1 to 3 , characterized by: The laying rubber sheet (Sa) comprises a base rubber sheet (10) on which the beam receiving rubber (Sb) is placed and supported, and at least one rubber sheet (10) polymerized and adhered to the lower surface of the base rubber sheet (10) as required. thickness-adjusting rubber sheets (11, 12), and the lower surface of the lowermost thickness-adjusting rubber sheet (11) is directly adhered to the upper surface of the raised wall (1s),
4. The floor support structure for a collective housing according to any one of claims 1 to 3 , characterized in that said back plate rubbers (Sc1 to Sc3) are integrally formed with said base rubber sheet (10). The frame (F) is made of reinforced concrete, and a reverse beam (1) is projected upward on the floor slab (FS) of the frame (F), and the side of the reverse beam (1) is stepped. The lower surface of the end (Be) of the large pull beam (B) that supports the lower surface of the floor plate (4) is supported via the buffer (S) on the upper surface of the raised wall (1s) formed in In the floor support structure in collective housing,
The cushioning body (S) consists of a rubber sheet (Sa) with adjustable thickness laid directly on the upper surface of the puffed wall (1s), and a beam receiver placed on the upper surface of the rubber sheet (Sa). and rubber (Sb),
The beam receiving rubber (Sb) has an engaging recess (Sbo) for engaging and mounting the end (Be) of the large beam (B),
The laying rubber sheet (Sa) comprises a base rubber sheet (10) on which the beam receiving rubber (Sb) is placed and supported, and at least one rubber sheet (10) polymerized and adhered to the lower surface of the base rubber sheet (10) as required. thickness-adjusting rubber sheets (11, 12), and the lower surface of the lowermost thickness-adjusting rubber sheet (11) is directly adhered to the upper surface of the raised wall (1s),
On the upper surface of the base rubber sheet (10), one side faces the end face (Bef) of the large beam (B) and the other side faces the reverse beam (1) from the raised wall (1s). A floor support structure in a collective housing, characterized in that the lower part of a solid back plate rubber (Sc4) polymer-bonded to the upper side surface (1uf) is fixed or integrally molded. The frame (F) is made of reinforced concrete, and a reverse beam (1) is projected upward on the floor slab (FS) of the frame (F), and the side of the reverse beam (1) is stepped. The lower surface of the end (Be) of the large pull beam (B) supporting the lower surface of the floor plate (4) is supported via the shock absorber (S) on the upper surface of the raised wall (1s) formed in the The cushioning body (S) comprises a laying rubber sheet (Sa) whose thickness is adjustable directly laid on the upper surface of the puffed wall (1s), and a beam receiving rubber placed on the upper surface of the laying rubber sheet (Sa). (Sb) and a method for constructing a floor support structure in a collective housing,
a first step of constructing the puffed wall portion (1s) on the side portion of the reverse beam (1);
a second step of adhering the laying rubber sheet (Sa) to a predetermined position on the upper surface of the raised wall portion (1s) while adjusting the thickness as necessary;
On the floor rubber sheet (Sa), the lower part of the back plate rubber (Sc1, Sc3) whose one side faces the end face (Bef) of the large pull beam (B) is fixed, and the back plate rubber (Sc1 , Sc3) is adhered to the upper side surface (1uf) of the reverse beam (1) above the raised wall portion (1s);
A foamed heat insulating material (D) for at least a part of the upper surface and side surface of the reverse beam (1), the inner surface of the wall body (FW) connected to the reverse beam (1), and the upper surface of the floor slab (FS) In parallel with the spraying, a horizontal hole (Sc1h) provided in the back plate rubber (Sc1), or a screen between the opposing surfaces of the back plate rubber (Sc3) and the upper side surface (1uf) A fourth step of filling and foaming the foamable heat insulating material (D) in the gap (20) formed with both left and right ends open;
and at least a fifth step of placing the end (Be) of the large beam (B) on the laying rubber sheet (Sa) via the beam receiving rubber (Sb), Construction method of floor support structure in collective housing. The frame (F) is made of reinforced concrete, and a reverse beam (1) is projected upward on the floor slab (FS) of the frame (F), and the side of the reverse beam (1) is stepped. The lower surface of the end (Be) of the large pull beam (B) supporting the lower surface of the floor plate (4) is supported via the shock absorber (S) on the upper surface of the raised wall (1s) formed in the The cushioning body (S) comprises a laying rubber sheet (Sa) whose thickness is adjustable directly laid on the upper surface of the puffed wall (1s), and a beam receiving rubber placed on the upper surface of the laying rubber sheet (Sa). (Sb) and a method for constructing a floor support structure in a collective housing,
a first step of constructing the puffed wall portion (1s) on the side portion of the reverse beam (1);
a second step of adhering the laying rubber sheet (Sa) to a predetermined position on the upper surface of the raised wall portion (1s) while adjusting the thickness as necessary;
On the floor rubber sheet (Sa), a back plate rubber (Sc2) having one side facing the end face (Bef) of the large pull beam (B) and having one side of the heat insulating material sheet (Ds) joined to the other side. a third step of fixing the lower part and adhering the other surface of the insulating material sheet (Ds) to the upper side surface (1uf) of the reverse beam (1) above the raised wall part (1s);
A foamed heat insulating material (D) for at least a part of the upper surface and side surface of the reverse beam (1), the inner surface of the wall body (FW) connected to the reverse beam (1), and the upper surface of the floor slab (FS) A fourth step of spraying
and at least a fifth step of placing the end (Be) of the large beam (B) on the laying rubber sheet (Sa) via the beam receiving rubber (Sb), Construction method of floor support structure in collective housing. Before the fourth step, when the laying rubber sheet (Sa) and the back plate rubber (Sc1, Sc2) are set on the padded wall (1s), the surface exposed to the outside and A curing sheet (Ya, Yc) is attached in advance to the upper surface of the laying rubber sheet (Sa) and the one side surface of the back plate rubber (Sc1, Sc2), respectively,
10. The method for constructing a floor support structure in a collective housing according to claim 8 or 9 , characterized in that said curing sheets (Ya, Yc) are peeled off after said fourth step is performed and before said fifth step is performed. .

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