JP2022149708A - Floor slab reinforcement structure - Google Patents

Abstract

To provide a floor slab reinforcement structure which enables enlargement of slabs while controlling the weight.SOLUTION: A brace member 6 can reinforce a floor slab 10 while restraining an increase in thickness of a deck plate 3 and the floor slab 10 with an increase in length of the floor slab 10, by reinforcing the deck plate 3 itself. A lower end 6a of the brace member is connected to a beam material 2, and an upper end 6b of the brace member 6 is connected to the deck plate 3. Accordingly, it becomes possible to shorten the span of the brace member 6 by connecting the upper end 6b of the brace member 6 to the deck plate 3 in the vicinity of the connection target beam material 2 without extending the upper end of the brace member up to another beam member 2 like binding beams. Thus, it is possible to reinforce the floor slab 10 while restraining the increase in weight of the reinforcement member compared to the case of adding beam materials for reinforcement along with enlargement of the floor slab 10.SELECTED DRAWING: Figure 1

Description

The present invention relates to floor slab reinforcement structures.

2. Description of the Related Art Conventionally, a floor structure described in Patent Literature 1 is known as a floor structure having beams extending in a lateral direction and deck plates arranged on the beams. In this structure, large girders span the pillars, and a plurality of small girders and grand girders are provided for the large girders. This provides reinforcement for the floor slab.

JP 2005-290684 A

Here, in recent years, due to the need to secure a large space in a building, there is a case where the floor slab is required to be elongated. In this way, when attempting to lengthen the floor slab, the floor slab is reinforced by increasing the thickness of the floor slab or increasing the number of beams that support the floor slab. However, these reinforcing structures have a problem of increased weight.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a floor slab reinforcement structure capable of increasing the length of a floor slab while suppressing its weight.

A floor slab reinforcing structure according to the present invention comprises a beam, a deck plate arranged on the beam, and a reinforcing member for reinforcing the deck plate, one end of the reinforcing member being connected to the beam. , the other end of the reinforcing member is connected to the deck plate.

A floor slab reinforcing structure according to the present invention includes a reinforcing member that reinforces a deck plate. The reinforcing member reinforces the floor slab by reinforcing the deck plate itself, thereby suppressing an increase in the thickness of the deck plate and the thickness of the floor slab as the length of the floor slab increases. can be done. Here, one end of the reinforcing member is connected to the beam and the other end of the reinforcing member is connected to the deck plate. Therefore, the span of the reinforcing member can be shortened by connecting the other end of the reinforcing member to the deck plate near the beam to be connected without extending the other end of the reinforcing member to another beam such as a small beam. . Therefore, the floor slab can be reinforced while suppressing the weight of the reinforcing member, compared to the case of adding reinforcing beams as the length of the floor slab increases. As described above, it is possible to increase the length of the floor slab while suppressing the weight.

The deck plate may have peaks and valleys extending in a predetermined direction. In this case, it is possible to effectively utilize the shape of the peaks and valleys of the deck plate to connect the upper ends of the reinforcing members. Further, by improving the strength of the entire floor slab including the deck plate, the length of the floor slab can be increased.

The reinforcing member may be connected to the deck plate while extending in a predetermined direction from the beam. Thus, when the reinforcing member reinforces the deck plate while extending in the same direction as the peaks and valleys of the deck plate, the span length and mounting angle of the brace member can be freely adjusted and installed.

SUMMARY OF THE INVENTION An object of the present invention is to provide a floor slab reinforcing structure capable of increasing the length of a floor slab while suppressing its weight.

1 is a schematic cross-sectional view of a floor slab reinforcing structure according to an embodiment of the invention; FIG. 1 is a schematic plan view of a floor slab reinforcing structure; FIG. It is a perspective view which shows the structure of brace member vicinity. It is a perspective view which shows the other connection structure of the upper end part of a brace member. It is a front view which shows the other connection structure of the upper end part of a brace member. It is a front view which shows another deck plate. It is a perspective view which shows the connection structure of the lower end part of a brace member. It is a schematic plan view of the floor slab reinforcement structure which concerns on a modification.

Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic cross-sectional view of a floor slab reinforcement structure 100 according to an embodiment of the invention. FIG. 2 is a schematic plan view of the floor slab reinforcement structure 100. FIG. Concrete is omitted in FIG. As shown in FIGS. 1 and 2, the floor slab reinforcement structure 100 includes beam members 2, deck plates 3, concrete 4, and brace members 6 (reinforcing members).

The beam 2 is a member extending horizontally. The beam member 2 is made of H-section steel, and includes a flange portion 11 extending toward the upper end, a flange portion 12 extending toward the lower end, and a web portion 13 extending vertically between the flange portions 11 and 12 . Flange portions 11, 12 and web portion 13 extend longitudinally. A reinforcement wall 14 extending vertically from the web portion 13 is formed between the flange portions 11 and 12 at a predetermined position in the longitudinal direction of the beam member 2 .

One horizontal direction is defined as the X-axis direction, and a horizontal direction perpendicular to the X-axis direction is defined as the Y-axis direction. In this case, as shown in FIG. 2, the floor slab reinforcing structure 100 includes beam members 2A and 2B extending in the Y-axis direction and beam members 2C and 2D extending in the X-axis direction. The beams 2A and 2B are arranged to face each other while being separated from each other in the X-axis direction. The beam 2A is arranged on the negative side in the X-axis direction, and the beam 2B is arranged on the positive side in the X-axis direction. The beams 2C and 2D are arranged to face each other while being separated from each other in the Y-axis direction. The beam 2C is arranged on the negative side in the Y-axis direction, and the beam 2D is arranged on the positive side in the Y-axis direction. A column material 7A is provided between the beam material 2A and the beam material 2C. A column material 7B is provided between the beam material 2A and the beam material 2D. A column member 7C is provided between the beam member 2B and the beam member 2C. A column material 7D is provided between the beam material 2B and the beam material 2D.

The deck plate 3 is a plate-shaped member arranged on the beam member 2 . As shown in FIG. 1 , the deck plate 3 is arranged on the upper surface of the flange portion 11 of the beam member 2 . As shown in FIG. 2, the deck plate 3 has a rectangular shape, and its four sides are supported by beam members 2A, 2B, 2C, and 2D. As shown in FIG. 5, the deck plate 3 has peaks 3a and valleys 3b alternately in the Y-axis direction. The peak portion 3a is provided so as to protrude upward from the bottom surface of the valley portion 3b. The plurality of peaks 3a extend parallel to each other in the X-axis direction while being separated from each other in the Y-axis direction. Moreover, the plurality of valleys 3b extend parallel to each other while being separated from each other in the Y-axis direction. In this embodiment, the deck plate 3 has a top wall portion 3c, a bottom wall portion 3d, and side wall portions 3e and 3f. The side wall portions 3e and 3f are wall portions that connect the top wall portion 3c and the bottom wall portion 3d. In this case, the peak portion 3a is formed by the upper wall portion 3c and the side wall portions 3e and 3f. A valley portion 3b is formed by the bottom wall portion 3d and the side wall portions 3e and 3f.

As shown in FIG. 1 , concrete 4 is placed on the upper surface side of deck plate 3 . Concrete 4 is filled in valleys 3b (see FIG. 5) of deck plate 3 and is filled up to a position higher than the upper surface of peaks 3a (see FIG. 5). The floor slab 10 is formed by placing the concrete 4 on the deck plate 3 in this manner.

The brace member 6 is a member arranged between the beam member 2 and the deck plate 3 . A lower end 6 a (one end) of the brace member 6 is connected to the beam 2 , and an upper end 6 b (the other end) of the brace member 6 is connected to the deck plate 3 . The square member 6 is a member that linearly extends obliquely upward in the vicinity of the corner between the beam member 2 and the deck plate 3 . A lower end portion 6a of the brace member 6 is connected to the vicinity of the flange portion 12 on the lower side. A lower end portion 6a of the brace member 6 is connected to a position closer to the deck plate 3 than the web portion 13 (the positive side in the X-axis direction in FIG. 1). The upper end portion 6 b of the brace member 6 is connected to a position spaced apart from the beam 2 on the lower surface of the deck plate 3 . As a result, the brace member 6 can transmit the load acting on the deck plate 3 to the beam member 2 , so that it can function as a reinforcing member that reinforces the deck plate 3 . In terms of lateral buckling of the beam 2, the brace member 6 can transmit the load of the beam 2 to the floor slab 10, so it can also function as a lateral stiffener for the beam 2. can.

As shown in FIG. 2, in the present embodiment, a brace member 6 is provided so as to extend from the beam member 2A to the positive side in the X-axis direction. Moreover, the beam members 2A are provided with cross members 6 at a plurality of locations (three locations) so as to be spaced apart from each other in the Y-axis direction. A brace member 6 is provided so as to extend from the beam member 2B to the negative side in the X-axis direction. Moreover, the beam member 2B is provided with the brace members 6 at a plurality of locations (three locations) so as to be spaced apart from each other in the Y-axis direction.

The structure of the cane member 6 will be described in more detail with reference to FIG. As shown in FIG. 3(a), a pair of brace members 6A and 6B are provided at one lateral stiffening point. The square members 6A and 6B are steel members that extend in the longitudinal direction while having a U-shaped cross section. The square members 6A and 6B have a bottom wall portion 6c and a pair of side wall portions 6d and 6e rising from the bottom wall portion 6c. The bottom wall portion 6c of the brace member 6A and the bottom wall portion 6c of the brace member 6B are arranged so as to face each other in the Y-axis direction. Moreover, the side wall portions 6d and 6e of the cross member 6A and the side wall portions 6d and 6e of the cross member 6B protrude to opposite sides in the Y-axis direction. However, the cross-sectional shape of the square members 6A and 6B is not particularly limited. Also, the brace member does not necessarily have to be composed of two members, and the quantity of constituent materials can be changed as appropriate. For example, you may comprise a square member with H-shaped steel.

The lower ends 6a of the brace members 6A and 6B are connected to the lower ends of the reinforcing walls 14 (see also FIG. 7(a)). Specifically, the reinforcing wall 14 is sandwiched between the bottom wall portion 6c of the brace member 6A and the bottom wall portion 6c of the brace member 6B. Through-holes for inserting bolts 17 are formed in the bottom wall portion 6c of the brace member 6A, the bottom wall portion 6c of the brace member 6B, and the reinforcing wall 14. As shown in FIG. Therefore, by inserting the bolts 17 through the respective through holes and tightening them, the bottom wall portion 6c of the brace member 6A and the bottom wall portion 6c of the brace member 6B sandwich the reinforcing wall 14. fixed to The bolt 17 is provided so as to be inserted into the brace members 6A and 6B while extending in the horizontal direction rather than in the vertical direction. Therefore, the cross members 6A and 6B can be rotated with one bolt 17 as a fulcrum. The through hole for the other bolt 17 may be an elongated hole so that the bolt 17 can relatively move. In this case, the attachment position of the upper end portion 6b to the deck plate 3 can be adjusted by rotating the brace members 6A and 6B. For example, when it becomes necessary to adjust the position for supporting the deck plate 3 as the floor slab 10 becomes longer, the upper end 6b is connected to the appropriate position of the deck plate 3 using the rotating mechanism described above. can be made

The upper end portions 6b of the brace members 6A and 6B are connected to the deck plate 3 via the upper connecting hardware 20. As shown in FIG. In this embodiment, the upper connecting hardware 20 is fixed to the deck plate 3 with bolts 21 . Also, the upper end portions 6b of the square members 6A and 6B are fixed to the upper connecting hardware 20 with bolts 22. As shown in FIG. As a result, the upper end portions 6b of the brace members 6A and 6B are connected to the deck plate 3 via the bolts 22, the upper connecting hardware 20, and the bolts 21. As shown in FIG.

The upper connecting hardware 20 includes a body portion 24 fixed to the deck plate 3, and fixing pieces 26 fixing the brace members 6A and 6B. The body portion 24 is configured by a plate-like member fixed to the lower surface of the bottom wall portion 3d of the deck plate 3. As shown in FIG. The body portion 24 extends parallel to the bottom wall portion 3 d of the deck plate 3 . The bottom wall portion 3d and the body portion 24 of the deck plate 3 are formed with through-holes for inserting the bolts 21 therethrough. Therefore, the body portion 24 is fixed to the bottom wall portion 3d of the deck plate 3 by inserting the bolts 21 through the respective through holes and fastening them. As shown in FIG. 3(b), the bolt 21 is arranged to extend upward from the bottom wall portion 3d of the deck plate 3. As shown in FIG. Therefore, when the concrete 4 is placed, the bolts 21 are integrated with the floor slab 10 (see FIG. 1).

The fixed piece 26 is configured by a plate-like member extending downward from the lower surface of the main body portion 24 . The fixed piece 26 extends parallel to the bottom wall portion 6c of the brace members 6A and 6B. A fixing piece 26 is sandwiched between the bottom wall portion 6c of the brace member 6A and the bottom wall portion 6c of the brace member 6B. Through holes for inserting bolts 22 are formed in the bottom wall portion 6c of the brace member 6A, the bottom wall portion 6c of the brace member 6B, and the fixing piece 26. As shown in FIG. Therefore, by inserting the bolts 22 through the respective through-holes and tightening them, the bottom wall portion 6c of the brace member 6A and the bottom wall portion 6c of the brace member 6B sandwich the fixing piece 26. fixed to

Next, functions and effects of the floor slab reinforcing structure 100 according to this embodiment will be described.

First, a general building has a structure in which the floor slab supports the load. In addition, girders are placed to support the floor slab as it grows in length. On the other hand, composite slab structures are sometimes adopted to reduce the number of small beams. Composite slab structures are superior in strength and rigidity to ordinary floor structures because the deck plates are integrated with the concrete to resist the load. In general, the deck plate used for the composite slab structure is provided with composite mechanisms such as embossments and key grooves (such as stepped portions 126 and 127 shown in FIG. 5). produce a composite effect. Composite slab structure is mainly based on the technique of devising the shape of the deck plate etc. in order to correspond to the lengthening of the floor slab. For example, if the thickness of the deck plate is increased, the flexural rigidity is increased and the deflection of the floor slab is suppressed. In addition, by adjusting the height and depth of the key groove, it is possible to achieve a higher synthesizing effect with concrete.

Here, in recent years, many large-scale properties such as distribution warehouses and shopping centers have been constructed, and there is a need to secure a large space inside the building. In order to secure a large space, it is necessary to reduce the number of columns and lengthen the beams and floor slabs. On the other hand, as the length of the floor slab increases, it is necessary to place more small beams or thicken the floor slab in order to properly support the floor slab. Both methods tend to increase building weight and affect floor height. Conventionally, the floor was made of a synthetic slab structure, and the effect of synthesizing the deck plate and concrete suppressed the deflection of the floor slab. On the other hand, although the composite slab structure can keep the thickness of the floor slab thinner than the general floor slab, the floor slab will inevitably become thicker if the floor slab becomes longer in response to the recent demand. Since the floor slab occupies a large area, increasing the thickness of the floor slab has a large impact on the overall weight of the building. In addition, when trying to cope with the lengthening by devising the structure of the deck plate, a structure that increases the rigidity of the floor slab by increasing the thickness of the deck plate is adopted. increases. In addition, if the number of small beams is increased as the length of the floor slab increases, the weight of the building will increase.

In order to solve the above problem, the floor slab reinforcing structure 100 according to this embodiment includes the brace member 6 as a reinforcing member that reinforces the deck plate 3 . The brace member 6 reinforces the deck plate 3 itself, thereby suppressing an increase in the thickness of the deck plate 3 and an increase in the thickness of the floor slab 10 due to the lengthening of the floor slab 10. The floor slab 10 can be reinforced. Here, the lower end portion 6a of the brace member 6 is connected to the beam 2, and the upper end portion 6b of the brace member 6 is connected to the deck plate 3. As shown in FIG. Therefore, even if the upper end portion 6b of the brace member 6 is not extended to another beam member 2 like a small beam, the span of the brace member 6 can be reduced by connecting it to the deck plate 3 near the beam member 2 to be connected. can be shortened. Therefore, the floor slab 10 can be reinforced while suppressing the weight of the reinforcing member, compared to the case of adding reinforcing beams as the floor slab 10 becomes longer. As described above, it is possible to increase the length of the floor slab 10 while suppressing the weight.

By supporting the floor slab 10 on the lower surface by the brace member 6, it is possible to cope with a longer span with a floor slab cross section equivalent to that of the conventional floor slab, and to increase the degree of freedom in design. In addition, according to the floor slab reinforcement structure 100 according to the present embodiment, it is possible to reduce the cross section of the floor slab compared to a building with a conventional span. This reduces the burden on the foundations and foundations, making it possible to reduce the cost of the entire building.

The deck plate 3 may have peaks 3a and valleys 3b extending in the X-axis direction. In this case, it is possible to effectively utilize the shapes of the peaks 3a and the valleys 3b of the deck plate 3 to connect the upper ends 6b of the brace members 6. As shown in FIG. Further, by improving the strength of the entire floor slab including the deck plate 3, the length of the floor slab can be increased.

The brace member 6 may be connected to the deck plate while extending from the beam 2 in the X-axis direction (span direction of the deck plate 3). In this way, when reinforcing the deck plate 3 with the brace member 6 extending in the same direction as the crests 3a and the valleys 3b of the deck plate 3, the span length and mounting angle of the brace member 6 can be set freely. Can be adjusted and installed.

By shortening the span of the brace member 6, it is possible to ensure a wide underfloor space SP (see FIG. 1). As described above, it is possible to reduce the weight of the floor slab reinforcing structure 100 and ensure a wide underfloor space SP.

The upper end portion 6 b of the brace member 6 may be connected to the deck plate 3 via the upper connecting hardware 20 , and the upper connecting hardware 20 may be fixed to the deck plate 3 with bolts 21 . In this case, before placing the concrete 4, the bolts 21 of the upper connecting metal fittings 20 can be installed in the deck plate 3 as deck inserts. Thus, by placing the concrete 4, the upper connecting hardware 20 can be integrated with the floor slab. In this way, by connecting the upper connecting hardware 20 to the deck plate 3 in advance, after the concrete 4 is placed, the work is completed on the lower side of the floor slab 10, and the square member 6 is connected to the deck plate. 3 can be connected. In addition, when the upper connecting hardware 20 is used, it can be applied not only to the deck plate 3 having an uneven cross-sectional shape, but also to a smooth deck plate 3, so that it can be connected without being affected by the shape of the deck plate 3. be able to.

The invention is not limited to the embodiments described above.

For example, the structure of the upper connecting hardware is not limited to that shown in FIG. For example, the upper connecting hardware 120 shown in FIGS. 4(a) and 5(a) may be employed. The upper connecting hardware 120 has a shape along the cross-sectional shape of the deck plate 3 and is fixed by being fitted into the deck plate 3 . Specifically, the upper connecting hardware 120 includes a body portion 121 , a fixing piece 122 , and locking portions 123 and 124 . The body portion 121 extends in a flat plate shape along the bottom wall portion 3 d of the deck plate 3 . Unlike the body portion 24 of FIG. 3A , the body portion 121 does not have a through hole for inserting a bolt, and does not have a structure to be directly fixed to the deck plate 3 . The locking portion 123 extends in a flat plate shape along the side wall portion 3f of the deck plate 3. As shown in FIG. The locking portion 123 extends in a flat plate shape along the side wall portion 3e of the deck plate 3. As shown in FIG. The locking portions 123 and 124 are locked to the side wall portions 3f and 3e of the deck plate 3, respectively. The fixed piece 122 has the same configuration as the fixed piece 26 in FIG.

As shown in FIG. 5A, the locking portions 123 and 124 protrude upward from the upper surface of the body portion 121 while being inclined. Thus, the combination of the body portion 121 and the locking portions 123 and 124 forms a trapezoidal shape corresponding to the cross-sectional shape of the valley portion 3b of the deck plate 3. As shown in FIG. Claw portions 123a and 124a are formed at the upper end portions of the locking portions 123 and 124, respectively. The claw portions 123a and 124a are bent toward the deck plate 3 so as to be caught by the stepped portions 126 and 127 formed on the side wall portions 3f and 3e of the deck plate 3, respectively. With such a configuration, when attaching the upper connecting hardware 120 to the deck plate 3, the upper connecting hardware 120 is fitted into the valley portion 3b of the deck plate 3 from below. The hooks 123a and 124a are caught by the stepped portions 126 and 127 of the side walls 3f and 3e, thereby locking the locking portions 123 and 124 to the side walls 3f and 3e. Thereby, the upper connecting hardware 120 is attached to the deck plate 3 . The locking portions 123 and 124 are fixed to the side wall portions 3f and 3e with screws 125 (see FIG. 4(a)). By screwing, the upper connecting hardware 120 can be prevented from slipping in the span direction of the deck plate 3 .

As described above, the upper end portion 6b of the brace member 6 is connected to the deck plate 3 via the upper connecting hardware 120, and the upper connecting hardware 120 has a shape along the cross-sectional shape of the deck plate 3. It may be fixed by being fitted into the deck plate 3 . In this case, the upper connecting hardware 120 can be easily connected by simply fitting it into the deck plate 3 . It is also possible to connect the upper connecting hardware 120 to the deck plate 3 after placing the concrete 4 . Further, after placing the concrete 4, it is possible to connect the brace members 6 to the deck plate 3 in such a manner that the work is completed on the lower side of the floor slab 10. - 特許庁

Also, the brace member 6 may be connected to the deck plate 3 without using the upper connecting hardware. For example, the structures shown in FIGS. 4(b) and 5(b) may be employed. In the example shown in FIGS. 4(b) and 5(b), the upper ends 6b of the brace members 6A and 6B are connected to the deck plate 3 via bolts 31 inserted into the deck plate 3. As shown in FIG. The bolt 31 is a long bolt that penetrates the side walls 3e and 3f of the deck plate 3. As shown in FIG. On the other hand, the brace member 6A is arranged at a position facing the side wall portion 3e, and the brace member 6B is arranged at a position facing the side wall portion 3f, and is connected to the deck plate 3 by inserting a bolt 31. be.

As described above, the upper end portion 6b of the brace member 6 may be connected to the deck plate 3 via the bolt 31 inserted into the deck plate 3. As shown in FIG. In this case, by placing the concrete 4 with the bolts 31 inserted into the deck plate 3, the deck plate 3 can be integrated with the floor slab 10. - 特許庁Then, it is possible to connect the brace member 6 to the deck plate 3 via the bolt 31 later. By connecting the bolts 31 to the deck plate 3 in advance, it is possible to connect the brace member 6 to the deck plate 3 in such a manner that the work is completed on the lower side of the floor slab 10 after the concrete 4 is placed. It becomes possible.

As described above, the upper connecting metal fittings 20 and bolts 31 are provided in advance in the deck plate 3, or the upper connecting metal fittings 120 that can be retrofitted are interposed, thereby enabling the stress transmission of the brace member 6 to the floor slab 10. In addition, workability can be improved by enabling post-construction.

Moreover, when integrating the upper end part of a square member with the concrete 4, the following subjects arise. For example, when the upper end of the brace member is protruded into the cast-in-place concrete in order to be integrated with the precast floorboard, the attachment work of the brace member is not completed only on the bottom surface of the floor, and the integration with the precast floorboard. There are issues such as the curing period of concrete to fix the brace members that will be constructed. In addition, since it is necessary to protrude the brace members from the joints of the precast floorboards, the brace members are limited to thin flat steel. In addition, since it is necessary to cure the concrete in a state where the brace member is attached, there is also a problem that post-construction cannot be performed. On the other hand, in the above-described embodiment and modified example, it is possible to connect the brace member 6 to the deck plate 3 in such a manner that the work is completed on the lower side of the floor slab 10 after placing the concrete 4. Therefore, the above problem does not occur. In addition, there are advantages in that the brace member is joined to the deck plate 3, the cross section of the lateral stiffener is not limited, and post-installation is possible by installing the upper metal fittings in the floor slab 10 in advance. be.

The shape of the deck plate 3 is not particularly limited, and the structure of the present invention can be applied to various types of deck plates. That is, the shapes of the peaks and valleys are not particularly limited. Further, for example, the structure of the present invention may be applied to a flat type deck plate 103 as shown in FIG. As shown in FIG. 6 , the deck plate 103 has a flat portion 104 and peak portions 106 . The planar portion 104 is a plate-like portion extending parallel to the XY plane. The peak portion 106 is a portion that protrudes downward from the flat portion 104 and extends in the X-axis direction. The peaks 106 are provided at a predetermined pitch so as to be spaced apart from each other in the Y-axis direction. The square members 6A and 6B are connected to the peak portion 106. As shown in FIG.

As noted above, the present invention is also applicable to floor slabs other than composite slab construction, as shown in FIG. That is, conventionally, when the span of a floor slab is increased, there has been no method other than a composite slab structure. Composite slab structures are compatible with longer floor slabs by improving the performance of the deck plate itself. However, if the synthetic slab structure alone is used to cope with an increase in length, the thickness of the deck plate must be increased and the thickness of the floor slab must be increased, which increases the weight of the building. In addition, when using ordinary slabs, it was not possible to avoid an increase in the number of small beams due to the lengthening of the floor slab. For example, a method of providing precast floorboards may be provided, but the method of use is limited to the time when precast floorboards are used, so it is poor in terms of diversification. In contrast, in the present invention, by providing a technique for coping with the lengthening of floor slabs from a viewpoint different from the synthetic slab structure, various options for coping with the lengthening of floor slabs are provided in addition to conventional techniques. It becomes possible to In other words, the present invention can provide a floor slab reinforcement structure compatible with all deck plates including synthetic slab deck plates.

Further, in the above-described embodiment, the lower end portion 6a of the brace member 6 is connected to the reinforcing wall 14, but the method of connection is not particularly limited. For example, as shown in FIG. 7B, the lower end portions 6a of the brace members 6A and 6B may be connected to the beam member 2 via lower connecting hardware 90. As shown in FIG. In this case, restrictions on the connection position of the lower ends 6a of the brace members 6A and 6B with respect to the beam 2 can be reduced. Specifically, the lower connecting hardware 90 includes an upper hardware 91 , a lower hardware 92 , and an intermediate hardware 93 . The upper hardware 91 has a body portion 91a arranged on the upper surface of the flange portion 12, and a fixing piece 91b fixed so as to be sandwiched between the square members 6A and 6B. The lower hardware 92 is arranged on the lower surface of the flange portion 12 . The intermediate metal fitting 93 has the same thickness as the flange portion 12 and is sandwiched between the main body portion 91 a of the upper metal fitting 91 and the lower metal fitting 92 . By fixing the body portion 91 a of the upper metal fitting 91 , the intermediate metal fitting 93 , and the lower metal fitting 92 with bolts, the lower connecting metal fitting 90 is fixed to the flange portion 12 .

7(a) and 7(b), in order to connect the lower end 6a of the brace member 6 to the beam member 2, the flange portion 12 does not need to be formed with a hole, or welding is performed. It is possible to have a structure that does not need to perform For example, when a hole is formed in the flange portion 12 and the brace member 6 is bolted, the perforation of the flange portion 12 reduces the cross-sectional performance of the beam member 2, which impedes the strength and deformation capacity that should originally be possessed. there is a possibility. Moreover, when the brace member 6 is welded, there is a risk that sparks and the like will scatter, making it impossible to perform parallel work below the welding work, and there is a possibility that work efficiency will decrease. In addition, for the worker, since the work is upward work, the workability is lowered and thorough safety and health management is required.

Also, the structure of the beam is not particularly limited. For example, as shown in FIG. 8, beam members 2E and 2F corresponding to small beams may be provided. That is, reinforcing beam members 2E and 2F extending in the Y-axis direction are provided at intermediate positions between a pair of beam members 2A and 2B facing each other in the X-axis direction. The beams 2E and 2F span between the beams 2C and 2D at positions separated from the other beams in the X-axis direction.

The location and direction in which the square member 6 is provided are not limited. For example, the beam member 6 may be provided on the beam members 2E and 2F corresponding to the small beam. Further, a brace member 6 extending in the Y-axis direction may be provided for the beam members 2C and 2D.

2... Beam material 3... Deck plate 3a... Mountain portion 3b... Valley portion 6... Brace member (reinforcing member) 100... Floor slab reinforcing structure.

Claims (3)

a beam;
a deck plate disposed on the beam;
and a reinforcing member that reinforces the deck plate,
A floor slab reinforcement structure, wherein one end of said reinforcing member is connected to said beam and the other end of said reinforcing member is connected to said deck plate. The floor slab reinforcement structure according to claim 1, wherein said deck plate has peaks and valleys extending in a predetermined direction. 3. The floor slab reinforcing structure according to claim 2, wherein said reinforcing member is connected to said deck plate while extending from said beam member in said predetermined direction.

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