JP4247479B2 - RC wall mounting structure of steel structure building - Google Patents

Description

  The present invention relates to an RC wall mounting structure for a steel building, and more particularly to a conventional RC wall mounting structure on the first floor of a steel building.

  2. Description of the Related Art Conventionally, a curtain wall mounting structure for the purpose of easily and inexpensively mounting a curtain wall is known. Specifically, either one of the upper or lower part of the curtain wall is integrally fixed to the slab, and the other side is connected to the beam in a lockable and swayable state via a fastener. (For example, refer to Patent Document 1).

  By the way, in a steel structure building, a deformation follow-up ability of about 1/100 is structurally required for its outer wall. For this reason, PC (precast concrete) board, ALC (lightweight cellular concrete) board, extrusion-molded cement board, metal-type wall board, etc. are used as the standardized dry outer wall. The mounting structure provided with is adopted.

Japanese Patent Laid-Open No. 2003-119951

  However, in the case of a commercial building, the dry outer wall has problems such as many joints appearing on the face of the building on the first floor or it is difficult to ensure the degree of freedom of finishing. This is because the first floor part is different from the standard floor and has special conditions such as site shape and approach. If finishing stones and tiles are required on the outer wall, partially cut off the columns and beams using conventional RC walls, or the entire first floor is SRC (two-level beams are SRC). Structure). In any case, when using a conventional RC wall, it is required to satisfy both the deformation followability with respect to the steel frame and the degree of freedom of finishing.

  In view of the above circumstances, an object of the present invention is to provide an RC wall mounting structure for a steel building that can achieve both deformation followability to the steel frame and a degree of freedom of finishing in the steel building.

In order to achieve the above object, an RC wall mounting structure for a steel structure building according to claim 1 of the present invention has an upper portion that is displaceable in a horizontal direction with respect to the steel frame, and a lower end on the foundation of the steel frame. The first RC wall is fixed to the steel frame, and the upper part is suspended and fixed to the steel frame, and the lower part is connected to the steel frame so as to be horizontally displaceable. A second RC wall provided with a gap between them, and the first RC wall and the second RC wall are provided independently with a corner of the steel frame as a boundary. It is characterized by.

  The RC wall mounting structure for a steel structure building according to the present invention connects the upper part of the RC wall so as to be horizontally displaceable with respect to the steel frame, and fixes the lower end of the RC wall to the foundation of the steel frame. The RC wall can be provided with a deformation followability with respect to. Thereby, the conventional RC wall which is a suitable material can be used about the 1st floor part different from a normal reference floor by special conditions, such as site shape and an approach. As a result, it is possible to achieve both the deformation followability with respect to the steel frame and the degree of freedom of finishing, and it is also possible to obtain a reduction effect and a process shortening effect by the conventional RC wall.

  In the RC wall mounting structure for a steel structure building according to the present invention, the upper part of the RC wall is suspended and fixed to the steel frame, and the lower part of the RC wall is connected to the steel frame so as to be displaceable in the horizontal direction. Thus, by providing a gap between the foundation of the steel frame and the lower end of the RC wall, it is possible to provide the RC wall with a deformation followability to the steel frame. Thereby, the conventional RC wall which is a suitable material can be used about the 1st floor part different from a normal reference floor by special conditions, such as site shape and an approach. As a result, it is possible to achieve both the deformation followability with respect to the steel frame and the degree of freedom of finishing, and it is also possible to obtain a reduction effect and a process shortening effect by the conventional RC wall.

  In addition, by providing the RC walls described above independently at the corners of the steel frame, it is possible to ensure three-dimensional deformation followability with respect to the steel frame.

  Exemplary embodiments of an RC wall mounting structure for a steel building according to the present invention will be described below in detail with reference to the accompanying drawings. Note that the present invention is not limited to the embodiments.

  FIG. 1 is a side sectional view showing a first embodiment of an RC wall mounting structure for a steel building according to the present invention. FIG. 2 is a front view showing a first embodiment of an RC wall mounting structure for a steel building according to the present invention. 3 is a plan sectional view showing the first embodiment of the RC wall mounting structure for a steel building according to the present invention, and FIG. 4 is an enlarged side sectional view showing the first embodiment of the RC wall mounting structure for a steel building according to the present invention. FIG. 5 is a rear enlarged sectional view showing a first example of the RC wall mounting structure for a steel building according to the present invention. FIG. 6 is an enlarged bottom sectional view showing the first example of the RC wall mounting structure for a steel building according to the present invention. FIG.

  The RC wall 1 shown in FIGS. 1 to 3 is a conventional RC wall, and is configured as a rising wall in the first floor portion of the building. The RC wall 1 is connected to the steel frame 2 via a connecting member 3 so that the upper part can be displaced in the horizontal direction (the direction along the wall surface of the RC wall 1), and the lower end is fixed to the foundation 4 of the steel frame 2. Thus, the upper part can be displaced in the horizontal direction to ensure displacement followability with respect to the steel frame 2. The connecting member 3 is provided between the beam 2A side of the steel frame 2 and the indoor side (back side) of the RC wall 1. In addition, the part shown with a dashed-dotted line in FIGS. 1-3 is the pillar 2B which comprises the steel frame 2, and the beam 2A is being fixed to the said pillar 2B.

  As shown in FIG. 4, the connecting member 3 has a substantially L-shaped cross section in a side view. As shown in FIGS. 4 to 6, the connecting member 3 has a horizontal piece 3 </ b> A attached to the beam 2 </ b> A side of the steel frame 2, and the vertical piece 3 </ b> B on the indoor side of the RC wall 1. It is attached to the wall (on the back side).

  Regarding the attachment of the horizontal piece 3A of the connecting member 3, a fixing plate 5 is provided on the lower side of the beam 2A. The fixed plate 5 is welded and fixed in a horizontal form to the lower end of each support plate 6 that is suspended and welded to the lower surface of the beam 2A. The horizontal piece 3A is attached to the fixed plate 5. Specifically, the fixing plate 5 is provided with a long hole 5 a having a longitudinal shape along the wall surface direction of the RC wall 1. The long holes 5a are formed in two places along the longitudinal direction of the fixing plate 5 along the long holes 5a. On the other hand, the horizontal piece 3A is provided with a long hole 3Aa having a longitudinal shape in a direction orthogonal to the long hole 5a (that is, the thickness direction of the RC wall 1). The elongated holes 3Aa are formed in two places along the longitudinal direction of the horizontal piece 3A.

  Then, when the horizontal piece 3A is attached to the fixing plate 5, the horizontal piece 3A is superimposed on the fixing plate 5 so that each elongated hole 3Aa of the horizontal piece 3A and each elongated hole 5a of the fixing plate 5 are substantially cross-shaped. The horizontal piece 3A and the fixing plate 5 are clamped and fixed with bolts 8a and nuts 8b so as to be sandwiched between a pair of washers 7. Accordingly, the connecting member 3 is attached to the beam 2A of the steel frame 2 so that the horizontal piece 3A can be displaced in the horizontal direction that is the wall surface direction and the thickness direction of the RC wall 1.

  Regarding the attachment of the vertical piece 3B of the connecting member 3, the RC wall 1 is provided with an anchor bolt 10 extending to the indoor side (back side). The vertical piece 3B is attached to the RC wall 1 via the anchor bolt 10. Specifically, the anchor bolt 10 has a bent portion 10 a bent in a substantially L shape embedded in the RC wall 1, and the bolt portion 10 b extends from the wall surface on the indoor side (back side) of the RC wall 1. It is. On the other hand, the vertical piece 3B is provided with a large hole 3Ba into which the bolt portion 10b of the anchor bolt 10 is loosely inserted. The large hole 3Ba in this embodiment is formed in a substantially rectangular shape as shown in FIG. Moreover, the sliding plate 12 which penetrates the volt | bolt part 10b of the anchor bolt 10 is provided in the surface which faces the RC wall 1 side of the vertical piece 3B.

  Then, when attaching the vertical piece 3 </ b> B to the RC wall 1, the sliding plate 12 is superimposed on the wall surface of the RC wall 1. At this time, the bolt portion 10b of the anchor bolt 10 is loosely inserted into the large hole 3Ba of the vertical piece 3B. Next, the support washer 13 that penetrates the bolt portion 10b of the anchor bolt 10 is overlaid on the surface of the vertical piece 3B. The support washer 13 is provided with a long hole 13 a having a longitudinal shape along the wall surface direction of the RC wall 1. Next, the washer 14 penetrating the bolt portion 10 b of the anchor bolt 10 is superposed on the surface of the support washer 13. Next, the nut 10c is fastened to the bolt portion 10b of the anchor bolt 10 to fix the vertical piece 3B, the support washer 13 and the washer 14. Finally, the support washer 13 is welded and fixed to the vertical piece 3B. That is, the large hole 3Ba of the vertical piece 3B in which the bolt portion 10b of the anchor bolt 10 is loosely inserted is replaced with the long hole 13a of the support washer 13. Thereby, the RC wall 1 is attached to the vertical piece 3B of the connecting member 3 attached to the beam 2A of the steel frame 2 so as to be displaceable in the horizontal direction that is the wall surface direction of itself.

  When the vertical piece 3B is attached to the RC wall 1, if the sliding plate 12 provided on the vertical piece 3B and the wall surface of the RC wall 1 do not overlap appropriately, the nut 8b for fixing the horizontal piece 3A is loosened to By moving the piece 3A along the longitudinal direction of the long hole 3Aa, the position of the sliding plate 12 and the wall surface of the RC wall 1 can be adjusted appropriately. Further, when the vertical piece 3B is attached to the RC wall 1, when the bolt portion 10b of the anchor bolt 10 cannot be loosely inserted into the approximate center of the large hole 3Ba of the vertical piece 3B, a nut 8b for fixing the horizontal piece 3A is provided. By loosening and moving the horizontal piece 3A along the longitudinal direction of the long hole 5a, the bolt part 10b is loosely inserted in the approximate center of the large hole 3Ba, and the horizontal displacement of the RC wall 1 is equal to both. The position can be adjusted to That is, when attaching the horizontal piece 3A to the fixing plate 5, the nut 8b is temporarily tightened, and when attaching the vertical piece 3B to the RC wall 1, the nut 10c is tightened to fix the vertical piece 3B, the support washer 13 and the washer 14. Then, the nut 8b may be finally tightened before the support washer 13 is welded to the vertical piece 3B. Furthermore, the large hole 3Ba of the vertical piece 3B can absorb a dimensional error in the vertical direction of the bolt part 10b and can be loosely inserted.

  In this way, by attaching the upper part of the RC wall 1 to the steel frame 2 via the connecting member 3, it becomes possible to provide the RC wall 1 with deformation followability to the steel frame 2. Furthermore, since the lower end of the RC wall 1 is fixed to the foundation of the steel frame 2, there is not much joint on the lower end of the RC wall 1 that becomes the face of the building on the first floor, and the degree of freedom in finishing Can be secured.

  7 is a side sectional view showing a second example of the RC wall mounting structure for a steel building according to the present invention. FIG. 8 is a front view showing a second example of the RC wall mounting structure for a steel building according to the present invention. 9 is a plan sectional view showing a second example of the RC wall mounting structure for a steel building according to the present invention; FIG. 10 is an enlarged plan sectional view showing a second example of the RC wall mounting structure for a steel building according to the present invention; FIG. 11 is an enlarged side sectional view showing a second example of the RC wall mounting structure for a steel building according to the present invention. FIG. 12 is an enlarged rear sectional view showing a second example of the RC wall mounting structure for a steel building according to the present invention. FIG.

  The RC wall 101 shown in FIGS. 7 to 9 is a conventional RC wall, and is configured as a hanging wall in the first floor portion of the building. The RC wall 101 is fixed with the upper part suspended from the steel frame 2 and the lower part can be displaced in the horizontal direction (the direction along the wall surface of the RC wall 101) with respect to the steel frame 2 via the connecting member 103. By connecting and providing a gap 100 between the lower end and the foundation 4 of the steel frame 2, the lower part can be displaced in the horizontal direction to ensure displacement followability to the steel frame 2. The connecting member 103 is provided between the pillar 2B side of the steel frame 2 and the indoor side (back side) of the RC wall 101. In this embodiment, the column 2B includes a column 2Ba for fixing the beam 2A constituting the steel frame 2 and a column 2Bb provided between the beam 2A and the foundation 4 as shown in FIG. In this embodiment, the RC wall 101 configured as a hanging wall has an opening 101a that is the entrance of the first floor portion of the building.

As shown in FIG. 10, the connecting member 103 has a substantially L-shaped cross section in plan view. As shown in FIGS. 10 to 12, the connecting member 103 has a vertical vertical first piece 103 </ b> A attached to the wall surface on the indoor side (back side) of the RC wall 101 , and the vertical vertical second vertical piece 103 </ b> A. The piece 103B is attached to the column 2B side of the steel frame 2. 10 to 12 illustrate a configuration in which the connecting member 103 is attached to the pillar 2Ba that forms the corner (protruding corner) 2C of the steel frame 2 shown on the left side in FIGS. 8 and 9.

  Regarding the attachment of the first vertical piece 103A of the connecting member 103, the RC wall 101 is provided with an anchor bolt 110 extending to the indoor side (back side). The first vertical piece 103A is attached to the RC wall 101 via the anchor bolt 110. Specifically, the anchor bolt 110 has a bent portion 110a bent substantially in an L shape embedded in the RC wall 101, and the bolt portion 110b extends from the wall surface on the indoor side (back side) of the RC wall 101. It is. On the other hand, the first vertical piece 103A is provided with an elongated hole 103Aa through which the bolt portion 110b of the anchor bolt 110 is inserted. The long hole 103 </ b> Aa is formed in a longitudinal shape along the wall surface direction of the RC wall 1. Further, a sliding plate 112 that allows the bolt portion 110b of the anchor bolt 110 to pass through is provided on the surface of the first vertical piece 103A facing the RC wall 101 side.

Then, when attaching the first vertical piece 103 </ b> A to the RC wall 101, the sliding plate 112 through which the bolt portion 110 b of the anchor bolt 110 passes is overlapped with the wall surface of the RC wall 101. Next, the washer 114 penetrating the bolt part 110b of the anchor bolt 110 is overlaid on the surface of the first vertical piece 103A. Next, the nut 110c is fastened to the bolt part 110b of the anchor bolt 110 to fix the first vertical piece 103A and the washer 114. Thereby, the connecting member 103 is attached to the RC wall 101 so that the first vertical piece 103 </ b> A can be displaced in the horizontal direction of the RC wall 101 .

Regarding the attachment of the second vertical piece 103 </ b> B of the connecting member 103, a fixing plate 115 is provided on the column 2 </ b> B of the steel frame 2. The fixing plate 115 is fixed by welding perpendicularly to the side surface of the column 2B. The second vertical piece 103B is attached by overlapping the first vertical piece 103A on the RC wall 101 as described above and then welding on the fixed plate 115 . This result, RC wall 101, the first vertical piece 103A of the steel framework 2 of the coupling is attached to the column 2B member 103, displaceably mounted in a horizontal direction which is the wall surface direction of the own steel skeleton A gap 100 is provided between the two foundations 4 and the lower end of the RC wall 101.

In addition, when attaching the 2nd vertical piece 103B to the RC wall 101, if the 2nd vertical piece 103B and the fixing plate 115 do not overlap suitably, the fixing plate 115 which changed thickness and magnitude | size should just be employ | adopted. That is, after the first vertical piece 103A is attached to the RC wall 101, the fixing plate 115 is selected according to the position of the pillar 2B and the second vertical piece 103B and welded to the pillar 2B. The two vertical pieces 103B may be overlapped and welded.

  In the second embodiment described above, the configuration in which the RC wall 101 is attached to the pillar 2Ba at the corner (protruding corner) of the steel frame 2 shown on the left side in FIGS. In addition, the structure which attaches RC wall 101 to pillar 2Bb and pillar 2Ba of the plane part of the steel frame 2 shown on the right side in FIG. 8 and FIG.

  Thus, the upper part of the RC wall 101 is suspended and fixed to the steel frame 2, and the lower part of the RC wall 101 is attached to the steel frame 2 via the connecting member 103 with respect to the steel frame 2. By providing the gap portion 100 between the foundation 4 and the lower end of the RC wall 101, it becomes possible to provide the RC wall 1 with a deformation followability with respect to the steel frame 2. Further, by providing the gap portion 100 between the foundation 4 of the steel frame 2 and the lower end of the RC wall 101, a lot of joints appear at the lower end of the RC wall 1 in the portion that becomes the face of the building on the first floor. In addition, it becomes possible to secure the degree of freedom of finishing.

  In the case where the RC wall 1 in the first embodiment described above or the RC wall 101 in the second embodiment is configured to be connected in an L shape at the corner of the steel frame 2, since it has rigidity, it follows deformation deformation with respect to the steel frame 2. Will be offset. In the present embodiment, an RC wall mounting structure for a steel building for solving the problem at the corner will be described. In the third embodiment described below, the same parts as those in the first embodiment and the second embodiment described above are denoted by the same reference numerals.

  In FIG. 9, the RC wall 1 (see Example 1) with the upper part attached to the steel frame 2 so as to be horizontally displaced, and the RC wall 101 (with Example 2) the lower part attached to the steel frame 2 so as to be horizontally displaced. 2) is provided with the corner (protruding corner) 2C of the steel frame 2 as a boundary.

  As shown in FIG. 9, the RC wall 1 as the first RC wall and the RC wall 101 as the second RC wall are independent from each other at the corner (protruding corner) 2C of the steel frame 2 as a boundary. And configure. Specifically, joints 200 are provided along the corners 2C to cut the RC walls 1 and 101, respectively. In this manner, the RC walls 1 and 101 are independently provided via the joints 200 with the corner 2C as a boundary, so that the RC walls 1 and 101 are attached to the steel frame 2 so as to be displaceable in different horizontal directions. It becomes possible. That is, it is possible to obtain an RC wall mounting structure that secures deformation follow-up without any problem in three dimensions.

  In the above-described third embodiment, the RC wall 1 (see the first embodiment) in which the upper part is attached to be horizontally displaceable via a joint 200 with the corner 2C of the steel frame 2 as a boundary, and the lower part can be horizontally displaced. The form which attached RC wall 101 (refer Example 2) each attached independently was demonstrated. In addition, when the sleeve wall orthogonal to the wall surface is short and does not interfere with other walls, the RC walls 1 and 1 are attached so that the upper part can be horizontally displaced via the joint 200 with the corner 2C as a boundary (Example 1). RC wall mounting structure in which deformation followability is ensured three-dimensionally can be obtained even if each is mounted independently. Furthermore, when the sleeve wall orthogonal to the wall surface is short and does not interfere with other walls, the RC walls 101 and 101 are attached such that the lower part can be horizontally displaced via the joint 200 with the corner 2C as a boundary (see Example 2). Even if each is attached independently, it is possible to obtain an RC wall mounting structure that ensures three-dimensional deformation followability.

  In the third embodiment described above, the protruding corner portion is illustrated and described as the corner portion 2C of the steel frame 2; however, the RC wall is independently attached with the corner portion as a boundary. However, it is possible to ensure three-dimensional deformation followability with respect to the steel frame 2.

  As described above, the RC wall mounting structure for a steel building according to the present invention is useful for mounting a conventional RC wall on the first floor portion of the steel building, and in particular, for deformation following a steel frame in a steel building. It is suitable for achieving both sex and freedom of finishing.

It is a sectional side view which shows Example 1 of RC wall mounting structure of the steel structure building which concerns on this invention. It is a front view which shows Example 1 of RC wall mounting structure of the steel structure building which concerns on this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a plane sectional view which shows Example 1 of the RC wall mounting structure of the steel structure building which concerns on this invention. It is a side surface expanded sectional view which shows Example 1 of RC wall mounting structure of the steel structure building which concerns on this invention. It is a back surface expanded sectional view which shows Example 1 of RC wall mounting structure of the steel structure building which concerns on this invention. It is a bottom expanded sectional view which shows Example 1 of RC wall mounting structure of the steel structure building which concerns on this invention. It is side sectional drawing which shows Example 2 of RC wall mounting structure of the steel structure building which concerns on this invention. It is a front view which shows Example 2 of the RC wall mounting structure of the steel structure building which concerns on this invention. It is a plane sectional view which shows Example 2 of RC wall mounting structure of the steel structure building which concerns on this invention. It is a plane expanded sectional view which shows Example 2 of RC wall mounting structure of the steel structure building which concerns on this invention. It is a side surface expanded sectional view which shows Example 2 of RC wall mounting structure of the steel structure building which concerns on this invention. It is a back surface expanded sectional view which shows Example 2 of RC wall mounting structure of the steel structure building which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 RC wall 2 Steel frame 2A Beam 2B (2Ba, 2Bb) Column 2C Corner 3 Connecting member 3A Horizontal piece 3Aa Long hole 3B Vertical piece 3Ba Large hole 4 Foundation 5 Fixing plate 5a Long hole 6 Support plate 7 Washer 8a Bolt 8b Nut 10 Anchor bolt 10a Bent part 10b Bolt part 10c Nut 12 Slide plate 13 Support washer 13a Elongated hole 14 Washer 100 Gap part 101 RC wall 101a Opening part 103 Connecting member 103A First vertical piece 103Aa Elongated hole 103B Second vertical piece 110 Anchor Bolt 110a Bending portion 110b Bolt portion 110c Nut 112 Sliding plate 114 Washer 115 Fixing plate 200 Joint

Claims (1)

A first RC wall formed by connecting an upper part so as to be horizontally displaceable with respect to the steel frame, and fixing a lower end to the foundation of the steel frame;
The upper part is suspended and fixed with respect to the steel frame, the lower part is connected to the steel frame so as to be displaceable in the horizontal direction, and a gap is provided between the foundation and the lower end of the steel frame. RC wall and
An RC wall mounting structure for a steel building, wherein the first RC wall and the second RC wall are provided independently from each other at a corner of the steel frame.

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