JP2008127942A - Floor supporting structure for building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance the sound insulating effect without depending on a thickness of a floor slab, to widen the story height of the dwelling space and to reduce a weight of a concrete skeleton for improving aseismatic and vibration-controlling properties while triming the weight of the building itself and reducing costs by reducing the amount of concrete used, in the floor supporting structure for building. <P>SOLUTION: A floor slab Sf of a concrete skeleton F has a first and a second thick floor supporting parts 8(1), 8(2) extended integrally from a first and a second girders Bb1, Bb2 and a horizontal wall part 9 formed thinner than the floor supporting parts 8(1), 8(2) and connecting them integrally. A sleeper beam 5 is supported on the first and the second girders Bb1, Bb2 as well as the first and the second supporting parts 8(1), 8(2). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a floor support structure in a building, and more particularly to an improvement in a floor support structure of a building having a concrete frame with a regular beam structure.

  Generally, in apartment buildings such as condominiums, the floor structure is supported through a bundle (supporting member) standing up all over the concrete slab floor slab, so vibration applied to the floorboard on the floor slab There is a problem that the impact sound becomes a solid propagation sound and is transmitted as vibration noise from the floor board to the upper and lower floors and to the left and right adjacent rooms, causing deterioration of the environment of the living space and deterioration of quality.

  Therefore, conventionally, as a sound insulation measure, measures such as increasing the thickness of the floor slab or making the floor structure itself a sound insulation structure are taken.

In addition, as disclosed in Patent Document 1 described later, the concrete frame has an inverted beam structure so that the floor is supported above the large and small beams protruding above the floor slab, and the floor board is directly supported on the floor slab. In order to prevent noise and vibration applied to the floor slab from being transmitted directly to the floor slab, sound insulation measures have been proposed, but this will increase the vertical thickness of the floor support structure and increase the desired floor height. There is another problem that it is difficult to secure.
JP 2004-52504 A

  The present invention has been proposed in view of the above, and is to improve a horizontal frame portion including a floor slab of a concrete frame to ensure a sufficient floor height of a building while ensuring a desired sound insulation effect. Therefore, it is an object of the present invention to provide a floor support structure in a new building which can be provided at a low cost with a light weight.

In order to achieve the above-mentioned object, the invention according to claim 1 is characterized in that a plurality of pulling beams are provided on a floor slab integrally connected between first and second large beams arranged opposite to each other in a living space. In a floor support structure in a building in which a floor structure composed of a floorboard laid on it is arranged,
The floor slab is formed to be thinner than the first and second floor support portions, which are integrally extended from the first and second large beams, and thinner than the floor support portions, and integrally couple them. And a horizontal wall portion, wherein the large beam is supported on the first and second large beams and the first and second floor support portions.

  In order to achieve the object, the invention according to claim 2 is the one according to claim 1, wherein the floor slab Sf has a flat upper surface and a recess corresponding to the horizontal wall portion on the lower surface. Is formed.

  In order to achieve the above object, the invention according to claim 3 is the one according to claim 1, wherein the floor slab has a flat bottom surface and a concave portion corresponding to the horizontal wall portion on the top surface. It is characterized by being formed.

  In order to achieve the object, the invention according to claim 4 is the one according to claim 3, wherein the floor slab has a flat bottom surface and a concave portion corresponding to the horizontal wall portion on the top surface. The left and right end portions of the large beam are formed and embedded in the first and second floor support portions.

  To achieve the object, the invention according to claim 5 is the one according to claim 3 or 4, wherein the floor slab has a flat bottom surface and corresponds to the horizontal wall portion on the top surface. A concave portion is formed, and both end portions of the large pull beam are floating supported by the first and second floor support portions, and a part thereof is accommodated in the concave grooves formed in the first and second floor support portions. It is characterized by being.

  In order to achieve the object, the invention according to claim 6 is the one according to claim 3, wherein the floor slab has a flat bottom surface and a recess corresponding to the horizontal wall portion on the top surface. Further, a step portion is formed at each boundary portion between the first and second floor support portions and the horizontal wall portion, and both end portions of the large pull beam are floatingly supported on the step portions. It is said.

  According to the inventions described in the claims, the plurality of pulling beams are supported by the thick floor support portions of the large beam and the floor slab at both ends thereof, and thereby vibration caused by the load applied to the floor structure. Noise can be distributed to the thick floor supports of the large beams and floor slabs via multiple large beams, and vibrations are transmitted to the center of the floor slab that vibrates most, that is, the horizontal wall. The sound insulation effect is enhanced without depending on the thickness of the floor slab. Furthermore, since the load from the floor structure does not act on the horizontal wall of the floor slab and it does not need to have a sound insulation function, the horizontal frame of the floor slab can be made as thin as possible. As a result, the floor height of the living space can be increased, the weight of the concrete frame can be reduced, and the earthquake resistance and vibration control performance can be improved. Furthermore, the amount of concrete and steel used can be reduced. Thus, a significant cost reduction of the building itself is achieved.

  Moreover, according to invention of Claims 3-6, the recessed part of a horizontal wall part can be utilized as an underfloor storage space, and an object, piping, etc. can be accommodated there.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on examples of the present invention shown in the accompanying drawings.

First, a first embodiment of the present invention will be described with reference to FIGS.
1 is a perspective view of a part of an apartment house provided with a floor support structure according to the present invention, FIG. 2 is a plan view taken along line 2 in FIG. 1, and FIG. 4 and 4 are cross-sectional views taken along line 4-4 of FIG.

  In FIGS. 1 to 3, a concrete frame F having a regular beam structure, which constitutes the skeleton of the apartment house, extends in the horizontal direction, and extends horizontally in the vertical frame portion Fh that divides the building into a plurality of layers. Vertical frame portions Fv that connect the horizontal frame portions Fh to each other.

  The horizontal frame portion Fh includes a floor slab Sf that divides the living space Dw up and down, and first and second large beams Bb1 and Bb2 are integrally projected downward on the left and right sides of the floor slab Sf. The so-called “regular beam structure” is formed. Moreover, the said vertical frame part Fv is equipped with the vertical column walls 2 and 3 which connect the frame column 1 standingly arranged in the four corners of the living space Dw, and the parallel column 1 parallel.

  A floor structure Fr is disposed on the floor slab Sf of each layer. The floor structure Fr extends in a direction perpendicular to the first and second large beams Bb1 and Bb2, and has a plurality of large beams 5 arranged in parallel with a gap D1 on the floor slab Sf. It is comprised from the floor board 7 laid in those upper surfaces. Both end portions of the plurality of large pull beams 5 are first and second floor support portions 8 (1), 8 (2) having a thickness of the first and second large beams Bb1, Bb2 and the floor slab Sf continuous thereto. ) And is supported in a floating manner via support means S described later.

  Next, the structure of the floor slab Sf, which is a feature of the present invention, will be described.

  The floor slab Sf includes first and second floor support portions 8 (1), 2 (1), 2 (b) having a thickness (thickness of 270 mm) extending integrally from the first and second regular large beams Bb1 and Bb2 in the arrangement direction of the large pull beam 5. 8 (2) and a thin (thickness 35 mm) horizontal wall portion 9 for connecting the floor support portions 8 (1) and 8 (2) together, and this floor slab Sf is The upper surface supporting the large pull beam 5 is formed flat, and the first and second floor support portions 8 (1) and 8 (2) protrude downward with respect to the horizontal wall portion 9, A step 11 is formed at the boundary of the horizontal wall 9, and a recess 10 is formed corresponding to the lower surface of the horizontal wall 9. Further, the horizontal wall portion 9 occupies most of the volume of the floor slab Sf, and the floor slab Sf itself is formed in a light weight, so that the load and impact from the floor structure Fr are not directly applied thereto. ing.

  Each large-drawn beam 5 is a conventionally known one, and is formed by bending a galvanized steel plate to have a Σ cross section. As shown in FIG. 4, a vertical intermediate portion 5m and an inclined surface at the upper end thereof are provided. An upper end portion 5u having a channel shape in cross section connected via a lower end portion 5d having a channel shape in cross section connected to a lower end of the intermediate portion 5m via an inclined surface. A plurality of through holes 4 are formed at intervals.

  Both end portions of the plurality of large pull beams 5 are floating-supported via a plurality of support means S on the first and second floor support portions 8 (1) and 8 (2) of the floor slab Sf. As shown in FIGS. 3 and 4, a pair of level adjustment bolts 13 erected on the upper surface of the floor support portions 8 (1) and 8 (2) of the floor slab Sf with a cushioning material 12 are provided between a pair of upper and lower levels. A receiving frame 15 having a concave cross section is connected and supported via a nut 14 so that the position thereof can be adjusted. A vibration isolating rubber 16 is fixed and supported on the receiving frame 15, and a large Σ cross section is provided on the anti vibration rubber 16. The lower end portion 5d of the pull beam 5 is placed and supported. And in this mounting support state, each large drawing beam 5 is arranged close to the floor slab Sf with a vertical gap D1 between it and the floor slab Sf. Is disposed with a horizontal gap D2 between the opposed surfaces of the end and the vertical housing portion Fv. The gap D2 can be used as a storage space 26 for piping (for example, a water pipe, a sewer pipe, an electric wire, a telephone line, an air conditioning pipe).

  As described above, the plurality of large beams 5 have the gap D1 between the floor slab Sf and the gap D2 between the vertical frame wall Fv, the first and second large beams Bb1, Bb2, and the floor. Since the floating first and second floor support portions 8 (1) and 8 (2) of the slab Sf are floatingly supported via the support means S, the horizontal wall portion 9 and the vertical frame wall Fv of the floor slab Sf are supported. The propagation of vibration noise from the living space Dw to the upper and lower floors and the left and right adjacent rooms can be reduced.

  The plurality of large beam 5 has first and second floor support portions 8 (1) and 8 (2) whose both end portions are thick first and second large beams Bb1 and Bb2 and floor slab Sf. The vibration noise caused by the load applied to the floor structure Fr is supported by the first and second large beams Bb1, Bb2 and the floor slab Sf through the plurality of large pull beams 5. , The second floor support portions 8 (1) and 8 (2) can be dispersed, and the vibration is greatly suppressed from being transmitted to the center portion of the floor slab Sf that vibrates most, that is, the horizontal wall portion 9, The sound insulation effect is enhanced without depending on the thickness of the floor slab Sf. Further, since the load from the floor structure Fr does not act on the horizontal wall portion 9 of the floor slab Sf and it is not necessary to provide a sound insulation function, the horizontal housing portion 9 of the floor slab Sf is made as thin as possible. As a result, the floor height of the living space Dw can be increased, the weight of the concrete frame F can be reduced, and the seismic and damping performance can be improved. And by reducing the amount of steel used, the cost of the building itself can be significantly reduced.

  Next, a second embodiment of the present invention will be described with reference to FIGS.

  5 is a cross-sectional view of the floor support structure (corresponding to FIG. 3 of the first embodiment), and FIG. 6 is an exploded perspective view taken along line 6 of FIG. 5, in which the same elements as in the first embodiment are shown. Are denoted by the same reference numerals.

  In the second embodiment, the volume of the living space Dw is large, and the span between the first and second large beams Bb1 and Bb2 facing each other is longer than that in the first embodiment. Supplementary large draw beams 5A and 5A are integrally connected to both ends of the large draw beam 5 mounted on the floor slab Sf by using a joint hardware 20. Each supplementary large pull beam 5A is supported on the first and second large beams Bb1 and Bb2 and the thick first and second floor support portions 8 (1) and 8 (2) through the support means S. The joint hardware 20 is also supported on the first and second floor support portions 8 (1) and 8 (2). As shown in FIG. 6, each supplementary large pull beam 5 </ b> A and the joint hardware 20 are formed in the same shape as the large pull beam 5, and the joint hardware 20 extends over the large pull beam 5 and the supplemental large pull beam 5 </ b> A. After the engagement and connection, the large pull beam 5 and the supplementary large pull beam are provided by the plurality of bolts and nuts 21 through the plurality of through holes 4 respectively drilled in the joint hardware 20, the large pull beam 5 and the supplementary large pull beam 5A. 54 are integrally connected to each other through the joint hardware 20.

  Therefore, this second embodiment also has the same function and effect as the first embodiment.

  Next, a third embodiment of the present invention will be described with reference to FIG.

  FIG. 7 is a sectional view of the floor support structure (corresponding to FIG. 3 of the first embodiment).

  The third embodiment is different from the first and second embodiments in the structure of the floor slab Sf.

  That is, the floor slab Sf has a flat bottom surface (ceiling surface of the downstairs living space Dw), and the top surface of the horizontal wall portion 9 has first and second floor support portions 8 (1), 8 ( 2), a recess 22 is formed on the upper surface of the horizontal wall 9. Support means on the first and second floor support portions 8 (1) and 8 (2) and the first and second large beams Bb1 and Bb projecting upward with respect to the horizontal wall portion 9 through the step 23. A plurality of large draw beams 5 are supported in a floating state via S.

  Thus, in the third embodiment, the same effect as the first embodiment can be obtained, and the concave portion 22 on the upper surface of the horizontal wall portion 9 can be used as an underfloor storage space, and an object A or the like can be used there. Can be stored.

  Next, a fourth embodiment of the present invention will be described with reference to FIGS.

  8 is a cross-sectional view of the floor support structure (corresponding to FIG. 3 of the first embodiment), and FIG. 9 is an enlarged cross-sectional view taken along line 9-9 of FIG. The same symbols are assigned to the same elements.

  In the fourth embodiment, the structure of the floor slab Sf is the same as that of the third embodiment. That is, the floor slab Sf has a recess 23 formed on the upper surface of the horizontal wall portion 9 and its lower surface formed flat. . As shown in FIG. 9, in the floor slab Sf, the floor slab is placed in the first and second floor support portions 8 (1) and 8 (2) having a thickness following the first and second large beams Bb1 and Bb2. The lower half portions of both end portions of the plurality of large draw beams 5 on Sf are embedded, and both end portions of these large draw beams 5 are formed by the first and second floor support portions 8 (1) and 8 (2). Supported.

  Note that the embedding beam 5 is embedded in the floor slab Sf at the same time as the control housing F is cast.

  As shown in FIG. 8, one end portion (right end portion in FIG. 8) of the large pull beam 5 is shorter than the second floor support portion 8 (2). (2) A pipe space 26 is formed in a part on the upper side, and the floor board 7 is laid on the pipe space 26 through a rafter 25.

  Thus, according to the fourth embodiment, both ends of the large draw beam 5 are embedded in the first and second floor support portions 8 (1) and 8 (2) which are thick on the floor slab Sf. Therefore, the deflection of the floor structure Fr can be reduced, and the thickness thereof can be further reduced, which is effective in securing a higher floor height.

  In particular, the fourth embodiment is effective when applied to a large-sized living space Dw because the deflection of the floor slab Sf can be reduced.

  Next, a fifth embodiment of the present invention will be described with reference to FIGS.

  10 is a sectional view of the floor support structure (corresponding to FIG. 3 of the first embodiment), FIG. 11 is an enlarged sectional view taken along line 11-11 of FIG. 10, and FIG. 12 is a line 12-12 of FIG. The same reference numerals are given to the same elements as those in the first embodiment.

  In the fifth embodiment, the structure of the floor slab Sf is the same as that of the third and fourth embodiments. That is, the floor slab Sf has a recess 22 formed on the upper surface of the horizontal wall 9 and its lower surface formed flat. Is done. As shown in FIGS. 11 and 12, the floor slab Sf has thick first and second floor support portions 8 (1) and 8 (2) following the first and second large beams Bb1 and Bb2. A concave groove 30 having an open upper surface from the horizontal wall portion 9 toward the first and second large beams Bb1 and Bb2 is formed, respectively, and a large pull beam laid on the floor slab Sf is formed in the concave groove 30. The lower half of both ends of 5 is accommodated. Both ends of the large pull beam 5 are floatingly supported on the first and second floor support portions 8 (1) and 8 (2) via the support means S '. That is, the level adjustment bolt 33 erected on the upper surfaces of the first and second floor support portions 8 (1) and 8 (2) via the cushioning material 32 is connected to the receiving frame 35 via a pair of upper and lower nuts 34. Are connected and supported so that the position can be adjusted. The receiving frame 35 is inserted into the concave groove 30 so as to face the side surface of the large drawing beam 5, and the receiving frame 35 has a wooden or synthetic resin abutting member 37 on the side surface of the large drawing beam 5. The bolts and nuts 38 passing therethrough are connected together. As a result, the lower end portions of the large pull beam 5 are accommodated in the concave groove 30 and the first and second floor support portions 8 (1), 8 (2) are accommodated by the support means S '. Floating support is provided on the upper surface, and a floor plate 7 is laid on the upper surface of the large pull beam 5.

  Therefore, according to the fifth embodiment, the floor structure Fr can be supported in proximity to the upper surfaces of the thick first and second floor support portions 8 (1) and 8 (2) of the floor slab Sf. Therefore, as in the third and fourth embodiments, it is possible to reduce the deflection of the floor structure and to further reduce the thickness thereof, which is effective in securing a higher floor height.

  Next, a sixth embodiment of the present invention will be described with reference to FIGS.

  13 is a cross-sectional view of the floor support structure (corresponding to FIG. 3 of the first embodiment), and FIG. 14 is an enlarged cross-sectional view taken along the line 14-14 of FIG. The same symbols are assigned to the same elements.

  In the floor slab Sf of the sixth embodiment, the concave portion 22 is formed on the upper surface of the horizontal wall portion 9 as in the third to fifth embodiments, and the lower surface thereof is formed flat. Step portions 40 are respectively formed at boundaries between the first and second floor support portions 8 (1) and 8 (2) having the thickness of the floor slab Sf and the thin horizontal wall portion 9. The upper surfaces of the stepped portions 40 are lower than the upper surfaces of the first and second floor support portions 8 (1) and 8 (2) and higher than the upper surface of the horizontal wall portion 9. The span of the large draw beam 5 is formed slightly shorter than the span of the horizontal wall portion 9, and both ends of the large draw beam 5 are floatingly supported on the stepped portion 40 via support means S ″. That is, the receiving frames 45 extending toward the first and second floor support portions 8 (1) and 8 (2) are fixed to both ends of the large pull beam 5 with bolts and nuts 38, respectively. Level adjustment bolts 43 erected on the upper surface of the stepped portion 40 via a cushioning material 42 are connected and supported on both sides of the receiving frame 45 via a pair of upper and lower nuts 44 so as to be adjustable in position. The lower portion of the large pull beam 5 is located below the upper surface of the stepped portion 40.

  The floor plate 7 supported on the plurality of large beams 5 extends on the first and second floor support portions 8 (1), 8 (2), and the floor support portions 8 (1), 8 (8). 2) Supported above via a rafter 46.

  Thus, in the sixth embodiment, as in the third to fifth embodiments, the floor structure is formed on the thick first and second floor support portions 8 (1) and 8 (2) of the floor slab Sf. Since Fr can be closely supported, the deflection of the floor structure can be reduced as in the third to fifth embodiments, the thickness can be further reduced, and a higher floor height can be secured. It is effective.

  The first to sixth embodiments of the present invention have been described above, but the present invention is not limited to these embodiments, and various embodiments are possible within the scope of the present invention.

A perspective view of a part of an apartment house provided with a floor support structure of the present invention (first embodiment) FIG. 1 is a plan view taken along line 2 (first embodiment). FIG. 2 is an enlarged sectional view taken along line 3-3 (first embodiment). Sectional view along line 4-4 in FIG. 3 (first embodiment) Sectional view of the floor support structure (second embodiment) 6 is an enlarged perspective view (second embodiment) of FIG. Sectional view of the floor support structure (third embodiment) Sectional view of floor support structure (fourth embodiment) FIG. 8 is an enlarged sectional view taken along line 9-9 (fourth embodiment). Sectional view of the floor support structure (fifth embodiment) FIG. 10 is an enlarged sectional view taken along line 11-11 (fifth embodiment). FIG. 11 is an enlarged sectional view taken along line 12-12 (fifth embodiment). Sectional view of floor support structure (sixth embodiment) 13 is an enlarged sectional view taken along line 14-14 in FIG. 13 (sixth embodiment).

Explanation of symbols

5 ·························································································· 1 Floor support part 9 ......... Horizontal wall part 10 ......... concave part 22 ......... concave part 40 ......... step Bb1 ...・ 1st beam Bb2 ・ ・ ・ ・ ・ ・ 2nd beam Dw ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Living space Fr ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Floor structure Sf ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Floor slab

Claims (6)

On the floor slab (Sf) integrally joined between the first and second large beams (Bb1, Bb2) arranged facing each other with the living space (Dw), a plurality of large beam (5) and its In a floor support structure in a building in which a floor structure (Fr) comprising a floor board (7) laid on the floor is disposed,
The floor slab (Sf) has first and second floor support portions (8 (1), 8 (2)) having a thickness extending integrally from the first and second large beams (Bb1, Bb2). And a horizontal wall portion (9) formed thinner than the floor support portions (8 (1), 8 (2)) and integrally connecting them,
The large pull beam 5 is supported on the first and second large beams (Bb1, Bb2) and the first and second floor support portions (8 (1), 8 (2)). And floor support structure in buildings. The floor slab (Sf) according to claim 1, characterized in that the upper surface of the floor slab (Sf) is flat and the lower surface thereof is formed with a recess (10) corresponding to the horizontal wall (9). Floor support structure in buildings. The floor slab (Sf) according to claim 1, wherein the lower surface of the floor slab (Sf) is flat and a concave portion (22) corresponding to the horizontal wall portion (9) is formed on the upper surface. Floor support structure in buildings. The floor slab (Sf) has a flat bottom surface, and a concave portion (22) corresponding to the horizontal wall portion (9) is formed on the top surface. The left and right ends of the large pull beam (5) are The floor support structure in a building according to claim 3, wherein the floor support structure is embedded and supported in the first and second floor support portions (8 (1), 8 (2)). The floor slab Sf has a flat bottom surface, and a concave portion (22) corresponding to the horizontal wall portion (9) is formed on the top surface. Both ends of the large pull beam (5) are first The second floor support (8 (1), 8 (2)) is floatingly supported, and a part thereof is formed on the first and second floor supports (8 (1), 8 (2)). The floor support structure in a building according to claim 3 or 4, wherein the floor support structure is housed in a recessed groove (30). The floor slab (Sf) has a flat bottom surface, and a concave portion (22) corresponding to the horizontal wall portion (9) is formed on the top surface, and the first and second floor support portions (8). (1), 8 (2)) and step portions (40) are formed at the boundary portions between the horizontal wall portions (9) and both end portions of the large beam (5) on the step portions (40). The floor support structure in a building according to claim 3, wherein the floor support is floating supported.

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