JP2005146769A - Floor supporting structure of building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To disperse a load applied to a floor, to prevent occurrence of a rebound phenomenon of sleeper beams of a floor structure and to improve sound insulation performance by reinforcing the sleeper beams of a building having a concrete skeleton. <P>SOLUTION: The floor supporting structure of the building includes a plurality of sleeper beams S supported in parallel on a supporting face of the concrete skeleton F without being fixed, and a floor board 31 laid on the sleeper beams S. In the floor supporting structure, a plurality of reinforcing beams R crossing the sleeper beams S are arranged in series at a longitudinally middle part of the sleeper beams S. Both end parts of each of the reinforcing beams R and side faces of the sleeper beams S facing the end parts of the reinforcing beams R are connected to be unified by using a metal connector J. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a floor support structure for a building having a concrete housing such as an apartment, and more particularly to improvement of a floor support structure that is supported without being fixed to a support surface of the housing for sound insulation measures.

Conventionally, in a building with a concrete frame such as an apartment house, a plurality of large beams are supported on the floor support surface such as beams of the concrete frame without fixing them, and a floor plate is laid on the floor plate. A sound-insulating floor support structure in a building that can reduce the vibration generated by an applied load from reaching the downstairs via the floor structure is known (see, for example, Patent Document 1).
JP 2001-81891 A

  By the way, in the sound insulation floor support structure shown in Patent Document 1, a plurality of large draw beams are supported on both sides of a concrete frame beam (on the floor slab, there is a support for supporting the large draw beams. 22), when an excessive dynamic load is applied to the center part of the floor, as shown in FIG. There is a problem in that both ends of the pull beam receive an upward force in a direction in which they are repeatedly separated from the support surface of the concrete frame, and this causes a “bound phenomenon” to the pull beam and causes noise.

  The present invention has been made in view of such a situation, and it is possible to increase the rigidity of the large pull beam, particularly the intermediate portion thereof, and to distribute the force such as the dynamic load applied to the floor over the entire floor, thereby enabling “power holding”. It is another object of the present invention to provide a floor support structure for a new building that suppresses the occurrence of the “bound phenomenon” as much as possible to improve sound insulation performance.

  In order to achieve the object, the invention according to claim 1 is a building in which a plurality of large beams are supported in parallel on a support surface of a concrete frame, and a floor board is laid on the large beams. In the floor support structure of the above, a plurality of reinforcing beams that cross the extended beams are arranged in series in the longitudinal middle portion of the plurality of extended beams, and both ends of each of the reinforcing beams and the both ends The side surfaces of the large drawing beam facing each other are integrally connected by a connecting metal fitting.

  In order to achieve the object, the invention according to claim 2 is the one according to claim 1, wherein the connection fitting includes a pair of clamp halves that integrally clamp both side surfaces of the pull beam, and the clamp halves thereof. The reinforcing beam receiver is fixed to the back surface of the body and supports the end of the reinforcing beam.

  In order to achieve the above object, according to a third aspect of the present invention, in the first or second aspect of the present invention, the reinforcing beam is arranged in one or a plurality of rows in a longitudinal intermediate portion of the pulling beam. Features.

  In order to achieve the above object, a fourth aspect of the present invention is characterized in that in the first, second or third aspect, the large-draw beams are arranged in a plurality of rows close to each other.

  As described above, according to the first aspect of the present invention, the longitudinal intermediate portions of the plurality of large beams are connected to the reinforcing beams cross-arranged by the plurality of reinforcing brackets. It is possible to increase the rigidity of the intermediate part where the most load is applied, and even when an excessive dynamic load is applied to the center part of the floor plate, the dynamic load can be dispersedly supported by a plurality of large pull beams, and the floor structure By enabling the body to “force-hold”, the occurrence of a “bound phenomenon” in which the end of the large pulling beam jumps up can be prevented, and the sound insulation performance can be further enhanced.

  According to the second aspect of the present invention, the connecting fitting is easily and firmly fixed to an arbitrary position in the middle portion of the large pull beam, so that the reinforcing beam can be securely fixed to the large pull beam. .

  According to the third aspect of the present invention, the reinforcing beams are arranged in one or a plurality of rows in the longitudinal direction intermediate portion of the large drawing beam. The degree of reinforcement can be easily adjusted.

  Furthermore, according to the invention described in claim 4, the large drawing beams are arranged in a double row in the vicinity of each other, whereby the rigidity of the large drawing beam itself can be enhanced, and the reinforcement beam and the coupling fitting are cooperated. It is possible to further increase the rigidity of the floor structure.

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

  First, the first embodiment of the present invention will be described with reference to FIGS. 1 to 6. This first embodiment is a case where the floor support structure of the present invention is implemented in an apartment house having a reverse beam structure. 1 is an overall perspective view of the floor support structure, FIG. 2 is an enlarged view of a portion surrounded by an imaginary line in FIG. 1, and FIG. 3 is an enlarged sectional view taken along line 3-3 in FIG. 4 is a sectional view taken along line 4-5 in FIG. 3, FIG. 5 is a sectional view taken along line 5-5 in FIG. 3, and FIG. 6 is an enlarged view of a portion surrounded by an imaginary line 6 in FIG.

  In FIG. 1, a concrete frame F having a reverse-beam structure, which constitutes the skeleton of an apartment house, extends in the horizontal direction, and includes a horizontal frame portion Fh that divides the building into a plurality of layers, and a vertical frame extending in the vertical direction. A vertical housing portion Fv that connects the portions Fh to each other is provided.

  In one living space L defined by the concrete frame F, the upper surface of the reverse beam 2 projecting integrally upward from the floor slab 1 constituting the horizontal frame portion Fh and the frame constituting the vertical frame wall portion Fv. Between the upper surfaces of the stepped striking portions 4 formed integrally with the lower part of the partition wall 3, both ends of a plurality of parallel draw beams S are connected to the concrete frame via support means H described later. Without being fixed to F, it is supported floating in both ends.

  As shown in FIGS. 2 and 3, each large beam S has a vertical portion 10 extending in the vertical direction and upper and lower ends of a cross-sectional channel shape integrally connected to the upper and lower sides of the vertical portion 10 via inclined surfaces. The vertical part 10 is formed with a plurality of through holes 13 at intervals in the longitudinal direction.

  As shown in FIGS. 1 and 2, a plurality of reinforcing beams R cross the large drawn beams S so as to sandwich the large drawn beams S at an intermediate portion in the longitudinal direction of the multiple drawn beams S. , Arranged in a row. As shown in FIGS. 2 and 5, each reinforcing beam R is formed of a rectangular columnar material having a rectangular section that is long in the vertical direction, and is made of wood, synthetic resin material, etc. so that an operator can easily cut it to a predetermined length on site. It is configured. Each reinforcing beam R is cut to substantially the same length as the interval between the side surfaces of adjacent large drawing beams S, and both end surfaces thereof are arranged so as to face the side surfaces of two adjacent large drawing beams S. The end portion of the reinforcing beam R and the side surface of the intermediate portion of the large pull beam S are integrally connected by a connecting fitting J described below.

  As shown in FIGS. 3 to 5, the connecting fitting J is made of a metal plate such as a galvanized steel plate made of the same material as the large pulling beam S, and a pair of clamp halves whose lower ends are hinged to be opened and closed 21. 20 and 20 and a pair of coupled beam receivers 22 and 22 fixed to the back surfaces of the clamp halves 20 and 20, respectively. As shown in FIG. 3, each clamp half 20, 20 is formed in a U-shaped cross-section so as to follow the side shape of the large pull beam S, and connecting tongues 20 a, 20 a are formed on the left and right sides of the upper edge. A pair of trapezoidal sandwiching pieces 20b and 20b are integrally provided on the inner surface of the sandwiching piece 20b and 20b so as to stand upright, and uneven edges 20c and 20c are formed on the free ends of the sandwiching pieces 20b and 20b. Is formed.

  On the other hand, each connecting beam receiver 22 is formed in a U-shaped cross section, and includes left and right side walls 22a, 22a, a back wall 22b, and a bottom wall 22c. 3 and 4, the back walls 22b of the pair of connection beam receivers 22 and 22 are riveted 24 to the back surfaces of the pair of clamp halves 20 and 20, respectively.

  In order to connect the end portion of the reinforcing beam R to the side surface of the intermediate portion of the large pull beam S using the connection fitting J, a pair of left and right clamps are provided so as to sandwich the intermediate portion of the large pull beam S from both sides thereof. The halves 20 and 20 are rotated in the closing direction around the hinge connection 21, and the pair of connection tongues 20 a and 20 a of the clamp halves 20 and 20 are coupled to each other by the bolt and nut 26. At this time, the ridges 20 c and 20 c of the clamping pieces 20 b and 20 b inside the left and right clamp halves 20 and 20 bite into the vertical portion 10 of the large pull beam S. The upper portions of the clamp halves 20 and 20 are screwed 27 to the upper end portion 11 of the large pull beam S. Thereby, the connecting fitting J is firmly fixed to the middle part of the large pull beam S.

  As shown in FIG. 2, on the left and right connecting beam receivers 22 and 22 of the connecting bracket J fixed to the middle portion of adjacent large drawing beams S and S, the distance between the large drawing beams S and S is measured. The end portions of the reinforcing beams R, R cut to approximately the same length as those are engaged and supported, and they are coupled by a plurality of bolts and nuts 28. As described above, a plurality of reinforcing beams R are crossed and connected in a row between the intermediate portions of the adjacent large drawing beams S and S by the connecting fitting J.

  Thus, the longitudinal intermediate portions of the plurality of large pull beams S can be reinforced by the plurality of reinforcing beams R arranged in a row and the plurality of connecting fittings J connecting them.

  As shown in FIGS. 1 and 2, a plurality of joists 30 are mounted on the plurality of large drawing beams S and the plurality of reinforcing beams R arranged in a row so as to cross them. A floor board 31 is laid on the top.

  A gap is formed between both end faces of the plurality of large draw beams S and the frame wall of the concrete frame F, and the end surfaces of the large draw beams S and the concrete frame F may be in direct contact with each other. The vibration applied to the large pull beam S is not directly propagated to the concrete frame F. As shown in FIGS. 1 and 2, on the support surface of the large draw beam S of the concrete frame F, that is, on the reverse beam 2 and the increased portion 4 of the concrete frame F, end portions of the multiple draw beams S are provided. Is supported in a floating manner by the supporting means H described below.

  As shown in FIG. 6, the floor support means H includes a support plate 36 made of galvanized iron bent into a pit shape, a vibration-proof rubber 37 having a concave cross section, a pair of level adjusting bolts 38, 38, And a pair of lock nuts 42 and 42 screwed into the level adjustment bolts 38 and 38, respectively. The support plate 36 has projecting portions 36a and 36a that project substantially horizontally on both the left and right sides, and the projecting portions 36a and 36a have bolt holes through which the level adjusting bolts 38 and 38 can penetrate. The weld nuts 39 and 39 into which the level adjusting bolts 38 and 38 are screwed are welded to the lower surfaces thereof and concentric with the bolt holes.

Further, the anti-vibration rubber 37 is seated and fitted in the recesses of the support plate 36 with some tightening allowance, and at that time, they are not joined together. Further, the pair of level adjusting bolts 38, 38 has circular seating plates 40, 40 connected to the lower surfaces of the heads 38b, 38b at the lower ends thereof, respectively, and a disk is connected to the lower surfaces of the seating plates 40, 40. In order to support the large pulling beam S on the support surface of the concrete frame F, that is, the reverse beam 2 and the striking portion 4, using the floor support means H, a pair of buffer rubbers 41, 41 are bonded. Male threaded portions 38a, 38a of the level adjusting bolts 38, 38 are screwed into the pair of weld nuts 39, 39, and the projecting portions 36a, 36a are passed through, and the male threaded portions 38a, protruding from the left and right projecting portions 36a, 36a, Lock nuts 42 and 42 are screwed to the free end of 38a. Accordingly, the support plate 36 is fixed by the pair of level adjustment bolts 38 and 38. The seating plates 40, 40 of the pair of level adjustment bolts 38, 38 are seated on the support surface of the concrete frame F, that is, the reverse beam 2 or the striking portion 4, via the buffer rubbers 41, 41. At this time, the level adjusting bolts 38 are not fixed on the support surface of the concrete frame F, that is, the reverse beam 2 or the increased portion 4. Accordingly, the pair of level adjusting bolts 38, 38 can freely move laterally with respect to the support surface of the concrete frame F, and a gap is formed between the bottom surface of the support plate 36 and the concrete frame F. Therefore, it does not come into contact with the concrete frame F. The anti-vibration rubber 37 is closely fitted in the recess of the support plate 36 without being fixed, and the lower surface of the large pull beam S is supported on the anti-vibration rubber 37 without being fixed. Therefore, the support plate 36, the pair of level adjusting bolts 38, 38, the pair of lock nuts 42, 42, and the vibration isolating rubber 37 constituting the floor support means H are not fixed to each other, and they can be freely set. Separable.

  Next, the operation of the first embodiment configured as described above will be described. The plurality of pulling beams S are not supported by the supporting means H and are not in contact with the concrete frame F. Floating support is provided on the striking portion 4 via a buffer rubber 41. Further, a reinforcing beam R arranged in a crossing manner with the reinforcing beam R is connected to a middle portion of the large pull beam S by a reinforcing metal fitting J, The rigidity of the intermediate part to which the plurality of large pull beams S are most loaded can be increased. Therefore, even when an excessive dynamic load is applied to the center portion of the floor plate 31, the dynamic load can be dispersedly supported by the plurality of large draw beams S, thereby enabling the "force holding" of the floor. The occurrence of the “bound phenomenon” in which the end of the large pull beam S jumps up can be prevented, and the sound insulation performance can be further improved. This is particularly effective when the large pull beam S is long.

  In addition, the above-described reinforcement operation of the large pull beam S can be easily performed at the site without requiring the skill of the operator by preparing the reinforcing bracket J and the reinforcing beam R that can be easily cut to a predetermined length. In addition, even if there is a gap between adjacent pulling beams S, the above operation can be performed without any trouble.

  As shown in FIGS. 1 and 2, the reinforcing beam R is not connected to the outer surface of the left and right outermost drawing beam S, so that the reinforcing beam receiver 22 is not connected to one of the outer surfaces of the connecting fitting J. .

  Next, a second embodiment of the present invention will be described with reference to FIGS. 7 to 9. FIG. 7 is a cross-sectional view of the connecting portion of the pulling beam S to the reinforcing beam R, and FIG. 7 is a cross-sectional view taken along line 9-9 in FIG. 7, and the same elements as those in the first embodiment are denoted by the same reference numerals.

  The second embodiment is slightly different from the first embodiment in the structure of the connecting fitting J and the reinforcing beam R ′. That is, one connecting tongue piece 20'a is erected integrally on the upper edge of the pair of left and right clamp halves 20, 20 of the connecting fitting J, and both connecting tongue pieces 20'a, 20 'are erected integrally. a is connected by a set of bolts and nuts 26 when the pair of clamp halves 20, 20 are closed. Further, the reinforcing beam R ′ connected to the large pulling beam S by the connecting fitting J is integrally formed with a portion corresponding to the joist 30 so as to be bulkier than the reinforcing beam R of the first embodiment. In the second embodiment, the joist 30 is not required on the large pull beam S to which the reinforcing beam R ′ is connected. As shown in FIG. 7, there is a connecting tongue between the end faces of the reinforcing beam R ′. An occupied space is secured for the pieces 20 'and the bolts and nuts 26 connecting them.

  Thus, the second embodiment has the same effects as the first embodiment, and it is not necessary to provide the joists 30 on the row of reinforcing beams R '. Thus, the left and right clamp halves 20 and 20 of the connection fitting J can be connected.

  Next, a third embodiment of the present invention will be described with reference to FIGS. 10 to 12. FIG. 10 is a cross-sectional view of the connecting portion of the pull beam and the reinforcing beam, and FIG. FIG. 12 is a cross-sectional view taken along the line 11-11, and FIG. 12 is a cross-sectional view taken along the line 12-12 in FIG. 10, and the same reference numerals are given to the same elements as those in the first and second embodiments.

  In the third embodiment, the structure of the connecting fitting J is different from that of the second embodiment, and other configurations are the same as those of the second embodiment.

  As clearly shown in FIG. 11, the pair of left and right clamp halves 20 and 20 of the connection fitting J of the third embodiment are engaged with the connection plate 23 so as to be openable and detachable. The connecting plate 23 is formed by a rectangular leaf spring, and hook-like engaged portions 23 a and 23 a are integrally formed at both left and right ends of the connecting plate 23. On the other hand, a pair of left and right engagement pieces 20d and 20d are formed at the lower part of the pair of clamp halves 20 and 20 so as to be bent outward at substantially right angles, and the distal ends of these left and right engagement pieces 20d and 20d are formed. Is detachably engaged with the left and right engaged portions 23a, 23a of the connecting plate 23. As shown by the arrows in FIG. 10, the pair of clamp halves 20 and 20 are biased in the closing direction by the spring force of the connecting plate 23 made of a leaf spring. Accordingly, as shown in FIG. 10, the pair of clamp halves 20 and 20 can be clamped from both sides by the spring force of the connecting plate 23, and after the clamp, the clamp halves 20 and 20 are clamped. If the 20 connecting tongues 20'a, 20'a are connected by a set of bolts and nuts 26, the connecting fitting J can be fixed to the middle portion of the large pull beam S, and the left and right connecting beam receivers 22 can be secured. , 22 is fixed with a plurality of bolts and nuts 28 in the same manner as in the first and second embodiments.

  Thus, the third embodiment has the same effect as that of the second embodiment, and the connecting bracket J does not require the hinge connection 21 of the first and second embodiments. Can be provided at a low cost.

  Next, a fourth embodiment of the present invention will be described with reference to FIGS. 13 to 15. FIG. 13 is a cross-sectional view of the connecting portion of the pull beam and the reinforcing beam, and FIG. 14 is a cross-sectional view taken along the line 15-15 in FIG. 13, and the same reference numerals are given to the same elements as those in the first to third embodiments.

  In the fourth embodiment, the structure of the connecting fitting J is different from that of the first embodiment, and the other configurations are the same as those of the first embodiment.

  The pair of left and right clamp halves 20 and 20 of the connecting fitting J that clamp the intermediate portion of the large pull beam S are divided and formed to have a concave cross section along the side surface shape of the large pull beam S. In the middle part of the clamp halves 20 and 20, lateral elongated holes 20 e and 20 e are formed, respectively. The vertical portion 10 of the large pull beam S is clamped from both sides by a pair of left and right clamp halves 20 and 20, and the elongated holes 20 e and 20 e of the left and right clamp halves 20 and 20 and the middle portion of the large pull beam S are drilled. After matching the provided mounting holes 13 and 13, the left and right clamp halves 20 and 20 of the coupling metal J are fixed to the middle portion of the large pull beam S by bolts and nuts 26 through the holes. A pair of reinforcing beam receivers 22 and 22 are welded to the outer surfaces of the left and right clamp halves 20 and 20, respectively. End portions of the reinforcing beam R are supported on the respective reinforcing beam receivers 22 and fixed by bolts and nuts 28. A joist 30 is laid on the reinforcing beam R and the connecting fitting J.

  Thus, the fourth embodiment also has the same effects as the first embodiment.

  Next, a fifth embodiment of the present invention will be described with reference to FIG. 16. FIG. 16 is an overall perspective view of the floor support structure, and the same reference numerals are used for the same elements as those in the first to fourth embodiments. Is attached.

  In the fifth embodiment, the intermediate portion of the plurality of large pull beams S can be reinforced by the reinforcing beams R connected in series over two rows using the connection fitting J of the first embodiment. In the middle portion of the large pull beam S, connecting rows J are connected in two rows at intervals in the longitudinal direction, and two rows of reinforcing beams R crossing the large draw beam S are connected to these connecting brackets J, respectively. Are fixed respectively.

  Thus, according to the fifth embodiment, the plurality of large pull beams S are reinforced in two rows by the reinforcing beam R and the reinforcing metal fitting J, so that the rigidity of the floor support structure is increased. It can be further increased and is particularly effective when applied to a floor structure having a large floor area.

  Next, a sixth embodiment of the present invention will be described with reference to FIGS. 17 to 19. FIG. 17 is an overall perspective view of the floor support structure, and FIG. 18 is an imaginary line enclosure indicated by an arrow 18 in FIG. FIG. 19 is an enlarged sectional view taken along line 19-19 of FIG. 18, and the same reference numerals are given to the same elements as those in the first embodiment.

  In the sixth embodiment, the double-row extended beam SS is supported on the concrete frame F in parallel. Each double-row large pull beam SS sandwiches a plurality of piece members 50 arranged in the longitudinal direction between the left and right large pull beams S, S that are arranged close to each other. The large pull beams S, S and the piece member 50 are integrally coupled by a connecting bolt 51 penetrating them and a nut 52 screwed to the connecting bolt 51. The piece member 50 is formed of wood, synthetic resin material or the like in a hexagonal cross section, and the inner surfaces of the left and right large drawing beams S, S are in close contact with the left and right outer surfaces thereof, thereby increasing the rigidity of the double row large drawing beam SS itself. It is done. The pair of left and right clamp halves 20 and 20 of the connection fitting J are connected to each other by a hinge fitting 53 having hinge connections 21 and 21 on the left and right sides. A pair of connecting tongues 20a, 20a standing on the upper ends of the left and right clamp halves 20, 20 are combined and connected by bolts and nuts 26, whereby the left and right clamp halves 20, 20 are closed and double-row large. It is integrally coupled to the pull beam SS. Further, the upper ends of the left and right clamp halves 20 and 20 and the left and right large pull beam S are overlapped with each other by screws 27. The jaws 20c and 20c of the clamping pieces 20b and 20b formed by folding from the inner surfaces of the left and right clamp halves 20 and 20 bite into the outer surfaces of the vertical portions 10 and 10 of the parallel pulling beams S and S, respectively. The coupling of J to the double row pull beam SS is further strengthened. End portions of the reinforcing beams R and R are engaged and supported by the left and right reinforcing beam receivers 22 and 22 of the connecting fitting J, respectively, and are integrally coupled by bolts and nuts 28 and 28. A joist 30 is laid on the upper surfaces of the connection fitting J and the reinforcing beam R.

  According to the sixth embodiment, the double row pull beam SS has its own high strength and its longitudinal intermediate portion is reinforced by the reinforcing beam R and the connecting bracket J, so that the rigidity of the floor structure is increased. Can be further enhanced.

  Next, a seventh embodiment of the present invention will be described with reference to FIG. 20. FIG. 20 is a cross-sectional view of the connecting portion of the pull beam and the reinforcing beam, which is the same as the sixth embodiment. Elements are given the same reference numerals.

In the seventh embodiment, a spacer 60 is used in place of the piece member 50 of the sixth embodiment, and other configurations are the same as those of the sixth embodiment. A plate-like spacer 60 made of an elastic material such as rubber is sandwiched between the side surfaces of the double-row extended beam SS facing the parallel extended left and right extended beams S, S. The upper portion of the spacer 60 is clamped between the clamping tongues 20a and 20a of the left and right clamp halves 20 and 20, and they are fixed by bolts and nuts 26. The same effects as those of the example are achieved.

  Next, an eighth embodiment of the present invention will be described with reference to FIG. 21. FIG. 21 is an overall perspective view of the floor support structure, and the same reference numerals are used for the same elements as in the sixth and seventh embodiments. Is attached.

  In the eighth embodiment, the intermediate portion of the double-row extended beam SS can be reinforced by the reinforcing beam R over two rows using the connecting bracket J of the sixth embodiment. Two rows of connecting brackets J are connected to the middle portion of the large pull beam SS in two rows at intervals in the longitudinal direction, and two rows of reinforcing beams that cross the double row large pull beam SS are connected to these connecting brackets J. Each R is fixed.

  Thus, according to the eighth embodiment, the double-row extended beam SS has its longitudinal intermediate portion reinforced by the reinforcing beam R and the reinforcing bracket J over two rows. The rigidity of the support structure can be further increased, and it is particularly effective when applied to a floor structure having a large floor area.

  As mentioned above, although the Example of this invention was described, this invention is not limited to the Example, A various Example is possible within the scope of the present invention.

  For example, in the above-described embodiment, the case where the floor support structure of the present invention is implemented in an apartment house having a concrete frame with a reverse beam structure is described. Of course, it can also be applied to buildings other than apartment buildings.

Overall perspective view of floor support structure (first embodiment) Enlarged view of the phantom line encircled portion in FIG. 1 (first embodiment) FIG. 2 is an enlarged sectional view taken along line 3-3 (first embodiment). 4 arrow view of FIG. 3 (first embodiment) Sectional drawing along line 5-5 in FIG. 3 (first embodiment) Enlarged view of a portion surrounded by an imaginary line 6 in FIG. 1 (first embodiment) Sectional view of the connecting part of the large pull beam to the reinforcing beam (second embodiment) FIG. 8 arrow view (second embodiment) Sectional drawing which follows the 9-9 line of FIG. 7 (2nd Example). Sectional view of the connecting part of the large pull beam and the reinforcing beam (third embodiment) Sectional drawing which follows the 11-11 line of FIG. 10 (3rd Example). Sectional drawing which follows the 12-12 line of FIG. 10 (3rd Example). Sectional view of the connecting part of the large pull beam and the reinforcing beam (Example 4) FIG. 13 arrow 14 view (fourth embodiment) Sectional drawing which follows the 15-15 line of FIG. 13 (4th Example). Overall perspective view of floor support structure (fifth embodiment) Overall perspective view of floor support structure (sixth embodiment) FIG. 17 is an enlarged view of the phantom line encircled portion (sixth embodiment). FIG. 18 is an enlarged sectional view taken along line 19-19 (sixth embodiment). Sectional view of the connecting part of the large pull beam and the reinforcing beam (seventh embodiment) Overall perspective view of floor support structure (eighth embodiment) The figure which shows the deflection state when dynamic load acts on the middle part of the conventional large pull beam

Explanation of symbols

20 ······· Clamp half 22 ········································································・ ・ Concrete frame J ・ ・ ・ ・ ・ ・ ・ Connecting brackets R and R ′ ・ ・ ・ Reinforcement beam S ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Large beam

Claims (4)

The floor of a building, which is supported in parallel on a support surface of a concrete frame (F) without fixing a plurality of large beams (S) and a floor plate (31) is laid on the large beams (S). In the support structure,
A plurality of reinforcing beams (R; R ′) crossing the large drawing beams (S) are arranged in series in the longitudinal middle portion of the plurality of large drawing beams (S), and each of the reinforcing beams (R) is arranged. A floor support structure for a building, wherein both ends of R ′) and the side surfaces of the large pull beam (S) opposed to the both ends are integrally coupled by a connecting fitting (J).   The connecting fitting (J) is fixed to a pair of clamp halves (20, 20) that clamps both side surfaces of the large pull beam (S) together and the back surfaces of the clamp halves (20, 20), respectively. The building floor support structure according to claim 1, further comprising a connecting beam receiver (22, 22) for supporting an end of the reinforcing beam (R; R ′).   3. The floor support of a building according to claim 1, wherein the reinforcing beams (R; R ′) are arranged in one or a plurality of rows in a longitudinal middle portion of the large pull beam (S). Construction. The floor support structure for a building according to claim 1, 2 or 3, wherein the large pull beam (S) is arranged in a plurality of rows close to each other.

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