Precast waist wall panel installation structure

Abstract

To provide a precast waist wall panel installation structure capable of suppressing breakage of precast waist wall panel due to earthquake and damage to a water stop material at a joint between precast waist wall panels.SOLUTION: A bottom side of a precast waist wall panel 1 is fixed to a foundation 6 in both an out-of-plane direction and an in-plane direction of the precast waist wall panel 1 by a lower fixed part 2, and an upper side of the precast waist wall panel 1 is fixed to a pillar 7 in the out-of-plane direction and an in-plane vertical direction by an upper fixing part 3. The upper fixing part 3 allows displacement of the pillar 7 during interlayer deformation in an in-plane horizontal direction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This invention relates to a precast spandrel wall panel installation structure in which a precast spandrel wall panel is placed on the outdoor side of a column on a foundation. [Background technology]

[0002] Patent Document 1 discloses a method for installing precast spandrel walls (PCa spandrel walls). In this method, a fitting groove is formed on the top surface of the foundation, located outside the columns, in the direction of column alignment. A fitting protrusion that fits into the fitting groove is formed at the lower end of the precast spandrel wall. A hook is protruded from the inside surface of the lower part of the precast spandrel wall. The precast spandrel wall is placed outside the columns, and the fitting protrusion is fitted into the fitting groove to erect it. The upper part of the precast spandrel wall is temporarily fixed to the columns with bolt fastening means. Next, a crowbar is hung on the hook of the precast spandrel wall, and the position of the precast spandrel wall is adjusted using this crowbar. After this adjustment, the bolt fastening means at the upper part of the precast spandrel wall is fully tightened to install the PCa spandrel wall to the columns. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-240243 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the conventional precast spandrel wall structure, if an earthquake causes the columns to displace horizontally within the plane of the precast spandrel wall panels, the precast spandrel wall panels may be pulled by the column displacement, resulting in damage to the panels. Similarly, if the gaps (joints) between the precast spandrel wall panels are deformed, the water-stopping material placed in the gaps may be damaged.

[0005] In view of the above circumstances, an object of this invention is to provide an installation structure for precast waist wall panels that can suppress damage to precast waist wall panels and damage to the water-stopping material in the joints between precast waist wall panels due to earthquakes. [Means for solving the problem]

[0006] The precast spandrel wall installation structure of the present invention is a precast spandrel wall panel installation structure in which a precast spandrel wall panel is arranged on the outdoor side of a column on a foundation, The lower side of the precast waist wall panel is fixed to the foundation by a lower fixing portion in both the out-of-plane direction and the in-plane direction of the precast waist wall panel, The upper side of the precast waist wall panel is fixed to the column in the out-of-plane direction and the in-plane vertical direction by an upper fixing portion, The upper fixing portion is characterized in that it suppresses the transmission of displacement during inter-layer deformation of the column to the precast waist wall panel in the horizontal direction within the plane by sliding relative to the precast waist wall panel.

[0007] With the above configuration, the upper fixing part prevents the transmission of displacement of the column during inter-story deformation to the precast waist wall panel in the horizontal direction within the plane by sliding relative to the precast waist wall panel, thereby preventing damage to the precast waist wall panel due to column displacement.Similarly, deformation of the gaps between the precast waist wall panels is also prevented, thereby preventing damage to the water-stopping material placed in the gaps.

[0008] The upper fixing portion includes a column-side fixing device fixed to the column, an upper insert fastening portion attached to the upper side of the indoor side surface of the precast waist wall panel, and an upper fastening member fastening the column-side fixing device and the upper insert fastening portion, The column side fixing device has a loose hole through which the upper fastening member is inserted, and this loose hole may be larger than the outer shape of the upper fastening member, thereby allowing displacement of the column side fixing device in the horizontal direction within the plane.

[0009] A slotted plate, which has a slot formed therein that allows displacement of the column-side fastener in the horizontal direction within the plane while restricting vertical movement within the plane, may be placed on the column-side fastener and fixed to the column-side fastener by welding. This welding can be performed at the installation site of the precast spandrel panel, so that errors that occur in the precast spandrel installation structure can be easily eliminated on site.

[0010] The precast waist wall panel installation structure may further include a gap plate that fills the gap between the column-side fastener and the indoor side of the precast waist wall panel. This allows the gap plate to eliminate any dimensional error in the gap between the column-side fastener and the indoor side of the precast waist wall panel.

[0011] A sliding plate member for reducing friction may be provided between the gap plate and the indoor side of the precast waist wall panel, or between the column-side fastener and the gap plate. This reduces friction between the gap plate and the indoor side of the precast waist wall panel, or between the column-side fastener and the gap plate, allowing the column-side fastener to move smoothly relative to the precast waist wall panel during inter-story deformation.

[0012] Alternatively, the column-side fastener may include an access adjustment member that protrudes into the gap between the column-side fastener and the indoor side of the precast waist wall panel and contacts the indoor side, and the indoor side of the precast waist wall panel may be provided with a sliding plate with which the access adjustment member can slide. This allows the access adjustment member to eliminate errors in the amount of access of the precast waist wall panel. Furthermore, because the access adjustment member contacts the sliding plate on the indoor side, the smoothness of displacement (movement) of the column (column-side fastener) during inter-layer deformation relative to the precast waist wall panel is improved compared to a combination of the gap plate and the sliding plate.

[0013] A sliding plate may be provided to reduce friction between the head side of the upper fastening member and the column-side fastener, thereby allowing the column-side fastener to move smoothly relative to the precast spandrel panel during inter-story deformation.

[0014] The lower fixing portion may include a foundation side fixing device fixed to an anchor portion buried in the upper part of the foundation and located at the top of the foundation, a lower insert fastening portion attached to the lower side of the indoor side of the precast waist wall panel, and a lower fastening member that fastens the foundation side fixing device and the lower insert fastening portion.

[0015] The foundation-side fixing device may be fixed to the upper part of the anchor portion by welding. This welding can be performed at the installation site of the precast spandrel panel, so that errors that occur in the precast spandrel installation structure can be easily corrected on site.

[0016] In these precast spandrel panel installation structures, the precast spandrel panel may be placed on the upper recess of the foundation, with the flat underside of the precast spandrel panel positioned above the base plate of the column. This eliminates the need to create a step on the underside of the precast spandrel panel, improving workability. [Effects of the Invention]

[0017] The present invention has the effect of suppressing damage to precast spandrel panels and damage to the water-stopping material in the joints between precast spandrel panels due to earthquakes. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 is a schematic front view showing a precast spandrel wall installation structure according to an embodiment. [Figure 2] FIG. 2 is a schematic longitudinal cross-sectional view of the precast spandrel wall installation structure shown in FIG. 1. [Figure 3] FIG. 2 is a schematic front view showing the lower fixing part of the precast spandrel wall installation structure shown in FIG. 1. [Figure 4]2A and 2B are diagrams showing the upper fixing part of the precast spandrel wall installation structure shown in FIG. 1, in which FIG. 2A is a schematic plan view and FIG. 2B is a schematic front view. [Figure 5] 5 is an explanatory view showing members that constitute the pole-side fixing tool of the upper fixing part shown in FIG. 4. [Figure 6] 10A and 10B are diagrams showing the upper fixing part of a precast spandrel wall installation structure of another embodiment, in which FIG. 10A is a schematic plan view and FIG. 10B is a schematic front view. [Figure 7] 10A and 10B are diagrams showing the upper fixing part of a precast spandrel wall installation structure of another embodiment, in which FIG. 10A is a schematic plan view and FIG. 10B is a schematic front view. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. As shown in Figures 1 and 2, in the precast waist wall installation structure of this embodiment, multiple precast waist wall panels 1 are placed on the outdoor side of steel columns 7 on a concrete foundation 6. The lower side of each precast waist wall panel 1 is connected to the foundation 6 by a lower fixing part 2, and the upper side of the precast waist wall panel 1 is connected to the column 7 by an upper fixing part 3.

[0020] In this embodiment, the foundation 6 comprises a foundation body and an upper recess 6a provided on the foundation body. The precast spandrel wall panel 1 is placed on the upper recess 6a, with the flat underside of the precast spandrel wall panel 1 positioned above the base plate 7a of the column 7. The base plate 7a is fixed onto a concrete column base 61 that is fabricated together with the foundation 6.

[0021] A water-stop material 8 is installed in the joint between two adjacent precast spandrel wall panels 1. A water-stop material 9 is also placed between the bottom of the precast spandrel wall panel 1 and the top of the foundation 6. These water-stop materials 8, 9 consist of sealants and gaskets incorporated into the precast spandrel wall panel 1, as well as polyethylene foam and other materials separately disposed from the precast spandrel wall panel 1. As shown in FIG. 2 , the precast spandrel wall panel 1 has a structure in which a gasket 1G is sandwiched between concrete plates. The lower side of the gasket 1G has a roughly T-shaped branch toward the indoor side, with the tip of this branch exposed on the concrete floor 50 side. This exposed portion prevents water from penetrating from the outdoors into the concrete floor 50 side. The gasket 1G is not limited to the above structure. For example, the gasket 1G may be attached to the indoor surface of the precast spandrel wall panel 1, with the lower side of the gasket 1G bent at an angle toward the outdoors. The bent portion prevents water from entering the concrete floor 50 side from the outside.

[0022] The lower fixing portion 2 fixes the precast waist wall panel 1 to the foundation 6 in both the out-of-plane direction and the in-plane direction of the precast waist wall panel 1. The lower fixing portion 2 includes, for example, a foundation-side fixing device 21 located at the top edge of the foundation and fixed to an anchor portion 20 buried in the upper part of the foundation 6, a lower insert fastening portion (insert nut or the like) 22 attached to the lower side of the indoor side of the precast waist wall panel 1, and a lower fastening member 23 such as a bolt with a washer that fastens the foundation-side fixing device 21 and the lower insert fastening portion 22 together.

[0023] The anchor portion 20 comprises an embedded portion 20a embedded in the upper recess portion 6a of the foundation 6 and a horizontal plate portion 20b welded to the top of the embedded portion 20a, and is plated to prevent rust. The upper surface of the horizontal plate portion 20b is exposed above the upper recess portion 6a. The anchor portion 20 is set before the upper recess portion 6a is made of concrete and is fixed in place when the concrete hardens.

[0024] The foundation-side fixing device 21 is, for example, an equilateral angle having two sides of equal length. As shown in Figure 3, one side of this equilateral angle, the lower plate portion 21a, is placed on the upper surface of the horizontal plate portion 20b, and the other side of the equilateral angle, the upright plate portion 21b, faces the indoor side of the precast spandrel panel 1. A vertically long slot 211 is formed in the center of the upright plate portion 21b.

[0025] A fixing plate 24 is disposed vertically on the indoor side of the rising plate portion 21b of the foundation-side fixing device 21. A circular through-hole large enough to receive the threaded portion of the lower fastening member 23 is formed in the center of the fixing plate 24. The threaded portion of the lower fastening member 23 is inserted through the circular through-hole and the elongated hole 211 and is screwed into the lower insert fastening portion 22 within the height range of the elongated hole 211, allowing for some error in the vertical fastening position of the lower fastening member 23. With this positional error allowed and the lower fastening member 23 screwed into the lower insert fastening portion 22, the fixing plate 24 is fixed to the rising plate portion 21b of the foundation-side fixing device 21 at welded portion W1. The lower plate portion 21a is fixed to the upper surface of the horizontal plate portion 20b of the anchor portion 20 at welded portion W2. This welding work is carried out in a state where the horizontal position of the foundation side fixture 21 has been determined by the screwing of the lower fastening member 23.

[0026] As shown in Figures 4(A) and 4(B), the upper fixing portion 3 comprises a column side fixing device 31 fixed to the side of the column 7, an upper insert fastening portion (insert nut, etc.) 32 attached to the upper side of the indoor side of the precast waist wall panel 1, and an upper fastening member 33 such as a washer-equipped bolt that fastens the column side fixing device 31 and the upper insert fastening portion 32.

[0027] The upper side of the precast waist wall panel 1 is fixed to the column 7 by the upper fixing part 3 in the out-of-plane direction of the precast waist wall panel 1 and in the vertical direction within the plane. Meanwhile, the upper fixing part 3 prevents the transmission of displacement during inter-story deformation of the column 7 to the precast waist wall panel 1 in the horizontal direction within the plane by sliding relative to the precast waist wall panel 1.

[0028] The column-side fastener 31 is, for example, an equilateral angle with two sides of equal length. One side plate portion 31a of this equilateral angle is fixed to the side surface of the column 7 by welding in advance. The other side plate portion 31b of the equilateral angle faces the indoor side surface of the precast spandrel wall panel 1. As shown in Figure 5, a loose hole 311 is formed in the center of the other side plate portion 31b, in which the upper fastening member 33 is positioned. This loose hole 311 is larger than the outer shape of the upper fastening member 33, allowing for displacement of the column-side fastener 31 (column 7) in the horizontal direction within the surface of the precast spandrel wall panel 1 and also allowing for errors that may occur in the installation of the upper fastening member 33, etc. The length of the horizontal straight portion of the loose hole 311 is, for example, approximately 53 mm, and the length of the vertical straight portion is, for example, approximately 20 mm.

[0029] The upper fixing portion 3 is provided with gap plates 35, 35 that fill the gap between the other side plate portion 31b of the column-side fixing device 31 and the indoor side surface of the precast waist wall panel 1. In this example, two gap plates 35, 35 are selected from multiple types of gap plates 35 with different thicknesses and attached. A notch 351 is formed on the lower side of each gap plate 35. The notch 351 is the location where the upper fastening member 33 is inserted and positioned, and allows the gap plate 35 to move horizontally within the above-mentioned plane relative to the upper fastening member 33.

[0030] Additionally, the upper fixing part 3 includes a stainless steel plate 34 between the gap plate 35 and the indoor side of the precast waist wall panel 1. This stainless steel plate 34 has a circular through-hole 34a formed therein through which the screw part of the upper fastening member 33 is passed. The stainless steel plate 34 functions as a sliding plate material that reduces friction when the gap plate 35 slides against the precast waist wall panel 1.

[0031] The upper fixing part 3 also has a slotted plate 36 superimposed on the indoor side of the column-side fixing device 31. The slotted plate 36 has slots 361 through which the upper fastening members 33 are passed. The slots 361 are elongated in the horizontal direction, allowing the column-side fixing device 31 to move horizontally within the plane of the precast waist wall panel 1 relative to the upper fastening members 33, while restricting the precast waist wall panel 1 from moving vertically within the plane relative to the upper fastening members 33. The length of the straight edge portion of the slots 361 is, for example, about 32 mm.

[0032] A stainless steel plate 37 is provided on the indoor side of the slotted plate 36, in contact with the indoor side. Circular through-holes 37a are formed in this stainless steel plate 37, through which the screw portions of the upper fastening members 33 are passed. The stainless steel plate 37 is a sliding plate material that reduces friction between a pressing plate 38 on the head side of the upper fastening members 33 and the slotted plate 36 on the other side plate portion 31b side.

[0033] The presser plate 38 is provided between the stainless steel plate 37 and the head of the upper fastening member 33. The presser plate 38 is formed with a circular through-hole 38a through which the screw portion of the upper fastening member 33 passes.

[0034] The slotted plate 36 is fixed to the other side plate portion 31b at welding point W3. This welding is performed with the upper fastening members 33 screwed in place. The gap plate 35 is fixed to the upper edge of the other side plate portion 31b at welding point W4. This welding is performed with the upper fastening members 33 screwed in place.

[0035] With the above configuration, the upper fixing part 3 prevents the transmission of displacement of the column 7 during inter-layer deformation to the precast waist wall panel 1 in the horizontal direction within the plane of the precast waist wall panel 1 by sliding relative to the precast waist wall panel 1, thereby preventing damage to the precast waist wall panel 1 due to the displacement of the column 7. Similarly, deformation of the gaps between the precast waist wall panels 1 is also prevented, which also prevents damage to the water-stopping material 8 placed in those gaps.

[0036] In this embodiment, the foundation-side fixing device 21 is fixed by welding to the top of the anchor part 20. This welding can be performed at the installation site of the precast spandrel wall panel 1, so errors that occur in the precast spandrel wall installation structure can be easily eliminated on site.

[0037] In this embodiment, the slotted plate 36 is placed on the column-side fastener 31 and fixed to the column-side fastener 31 by welding. This welding can be performed at the installation site of the precast spandrel wall panel 1, so errors that occur in the precast spandrel wall installation structure can be easily eliminated on site.

[0038] If a gap plate 35 is provided to fill the gap between the column-side fixing device 31 and the indoor side of the precast waist wall panel 1, any error in the gap between the column-side fixing device 31 and the indoor side of the precast waist wall panel 1 can be eliminated by the gap plate 35.

[0039] By providing a sliding plate material (stainless steel plate 34) that reduces friction between the gap plate 35 and the indoor side of the precast waist wall panel 1, the column side fixing device 31 can move smoothly relative to the precast waist wall panel 1 during inter-layer deformation.

[0040] Next, we will briefly explain the construction process for a precast spandrel wall installation structure. Formwork is created on the construction site, and concrete is poured to create the foundation 6 and column bases 61 for installing the columns. In this construction example, the top end of the foundation body side of the foundation 6 is lower than the top end of the column bases 61, but the precast spandrel wall panel 1 is placed on the upper recess 6a that forms the top of the foundation 6, so that the flat underside of the precast spandrel wall panel 1 can be positioned above the base plate 7a of the column 7. This eliminates the need to create a step on the underside of the precast spandrel wall panel 1, improving construction efficiency.

[0041] After the foundation 6 and other components are prepared and cured, scaffolding is erected around the foundation 6, and columns 7 are erected using a lifting machine placed indoors. A separate water-stop material, which will form part of water-stop material 9, is also installed on the foundation 6. Using the lifting machine, precast spandrel panel 1 is placed on the foundation 6, and column-side fasteners 31 are used to temporarily fasten the precast spandrel panel 1 to columns 7 with fastening members 33. Water-stop material 8 is placed on the edge of the precast spandrel panel 1. The planar position of the precast spandrel panel 1 is adjusted using gap plates 35 or access adjustment members 30 (described below), and the level of the precast spandrel panel 1 is also adjusted. Fastening members 33 are then finally tightened. Lower fixing members 2 are attached to the lower side of the precast spandrel panel 1. On-site welding is performed on the column-side fasteners 31 and lower fixing members 2. These on-site welds are then touched up with rust-preventive paint or plating repair paint. A buffer member 51 is placed on the surface of the precast waist wall panel 1 that comes into contact with the concrete floor 50 to disconnect them. Concrete is poured using the precast waist wall panel 1 as a formwork to create the concrete floor 50.

[0042] The tightening torque of the upper fastening member 33 when fixing the precast spandrel panel 1 to the column 7 is related to the contact pressure between the stainless steel plates 34, 37 and the other plate members, and the displacement of the column 7 during interlayer deformation affects the force (friction force) transmitted to the precast spandrel panel 1. Therefore, several interlayer deformation follow-up tests (interlayer deformation angles R = 1 / 120 rad, R = 1 / 60 rad, etc.) were conducted in fastening states with different tightening torques to determine the appropriate torque. In these tests, even with a tightening torque greater than the level at which the spring washer of the fastening member 33 would be crushed, slippage with respect to the precast spandrel panel 1 was generated, and damage to the precast spandrel panel 1 was avoided.

[0043] The upper fastening member 3A shown in Figure 6 may be used instead of the upper fastening member 3 shown in Figure 4. The differences between the upper fastening member 3A and the upper fastening member 3A are as follows. The upper fastening member 3A includes a stainless steel plate 34 on the exterior side of the other side plate portion 31b. It also includes gap plates 35, 35 that fill the gap between the stainless steel plate 34 and the interior side of the precast spandrel panel 1. The upper fastening member 3A does not require weld W4. Even with this structure, the tightening torque of the upper fastening member 33 used to fasten the precast spandrel panel 1 to the column 7 is related to the contact pressure between the stainless steel plates 34, 37 and other plate members. The displacement of the column 7 during interlayer deformation affects the force (frictional force) transmitted to the precast spandrel panel 1. Therefore, several interlayer deformation tracking tests were conducted with different tightening torques to determine the appropriate torque.

[0044] Alternatively, the upper fixing part 3B shown in Figure 7 may be used. The differences between the upper fixing part 3B and the upper fixing part 3 will be described below. The upper fixing part 3B is equipped with an access adjustment member 30, which has an access adjustment function and a sliding function to adjust the access of the precast waist wall panel 1, instead of the gap plate 35. The access adjustment member 30 consists of a headed bolt that is threaded into a screw hole in the other side plate part 31b. The bolt tip part 301 of the access adjustment member 30 protrudes into the gap between the outdoor side of the other side plate part 31b of the column-side fixing device 31 and the indoor side of the precast waist wall panel 1.

[0045] Bolt tip 301 is ground into a spherical shape to prevent contact deviation or wedging. A metal sliding plate 11 is attached to the interior side of precast spandrel panel 1, contacting bolt tip 301 to create a sliding contact. The interior side of precast spandrel panel 1 is made of concrete, and sliding plate 11 is embedded in the concrete, exposing the contact surface with bolt tip 301. Note that upper insert fastening member 32 may be provided within the area where sliding plate 11 is located, penetrating sliding plate 11. Even with this structure, the tightening torque of upper fastener 33 used to secure precast spandrel panel 1 to column 7 is related to the contact pressure of bolt tip 301 against sliding plate 11. Therefore, the displacement of column 7 during interlayer deformation affects the force (frictional force) transmitted to precast spandrel panel 1. Therefore, several interlayer deformation tracking tests were conducted with different tightening torques to determine the appropriate torque.

[0046] In the upper fixing parts 3 and 3A, slippage occurs at the contact point between the gap plate 35 and the stainless steel plate 34 during interlayer deformation, whereas in the upper fixing part 3B, slippage occurs at the point between the bolt tip 301 of the access adjustment member 30 and the sliding plate 11 during interlayer deformation. In interlayer deformation tracking tests (interlayer deformation angles R = 1 / 120 rad, R = 1 / 60 rad, etc.) using the upper fixing parts 3, 3A, and 3B, the smoothness of displacement (movement) of the column 7 (column-side fixing device 31) relative to the precast spandrel panel 1 during interlayer deformation was better for the upper fixing part 3B than for the upper fixing parts 3 and 3A. The fastening member 33 used in this test had a spherical bolt tip 301.

[0047] Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiments within the same scope as the present invention or within an equivalent scope. [Explanation of symbols]

[0048] 1: Precast waist wall panel 2: Lower fixing part 3: Upper fixed part 3A: Upper fixed part 3B: Upper fixed part 6: Basics 6a: Upper recess 7: Pillar 7a: Base plate 8:Waterproof material 9:Waterproof material 11: Slide plate 20: Anchor part 20a: Buried section 20b:Horizontal plate part 21:Foundation side fixture 21a: Lower plate part 21b: Standing plate part 22: Lower insert fastening part 23: Lower fastening member 24: Fixed plate 30: Ingress / egress adjustment member 31: Column side fixture 31a: One side plate part 31b: Other side plate part 32: Upper insert fastening part 33: Upper fastening member 34: Stainless steel plate (sliding plate material) 34a: Circular through hole 35: Gap plate 36: Plate with slots 37: Stainless steel plate (sliding plate material) 37a: Circular through hole 38: Presser plate 38a: Circular through hole 61: Column base 7a: Base plate 211: Long hole 301: Bolt tip 311: Loose hole 351: Notch 361: Long hole W1: Welding point W2: Welding point W3: Welding point W4: Welding point

Claims

1. A precast spandrel wall panel installation structure in which a precast spandrel wall panel is placed on the outdoor side of a column on a foundation, The lower side of the precast waist wall panel is fixed to the foundation by a lower fixing part in both the out-of-plane direction and the in-plane direction of the precast waist wall panel, and the upper side of the precast waist wall panel is fixed to the column by an upper fixing part in both the out-of-plane direction and the in-plane vertical direction, The upper fixing portion includes a column-side fixing device fixed to the column, an upper insert fastening portion attached to the upper side of the indoor side surface of the precast waist wall panel, and an upper fastening member attached to the upper insert fastening portion and fastening the upper insert fastening portion to the column-side fixing device, The column-side fixing device has a loose hole through which the upper fastening member is inserted, and this loose hole is larger than the outer shape of the upper fastening member, and by allowing displacement of the column-side fixing device in the horizontal direction within the plane, the transmission of displacement of the column during inter-layer deformation to the precast waist wall panel in the horizontal direction within the plane is suppressed by slippage relative to the precast waist wall panel side, A precast waist wall panel installation structure characterized in that a plate with a slot formed therein is placed on the column-side fixing device and fixed to the column-side fixing device by welding, the plate having a slot through which the upper fastening member is inserted and which, depending on the size of the upper fastening member, allows displacement of the column-side fixing device in the horizontal direction within the plane while restricting vertical movement within the plane.

2. 2. The precast waist wall panel installation structure according to claim 1, further comprising a gap plate for filling a gap between the column-side fixing device and the indoor side of the precast waist wall panel.

3. 3. The precast waist wall panel installation structure according to claim 2, further comprising a sliding plate material for reducing friction between the gap plate and the indoor side of the precast waist wall panel, or between the column-side fixing device and the gap plate.

4. 2. A precast waist wall panel installation structure according to claim 1, wherein the column-side fixing device is provided with an access adjustment member that protrudes into the gap between the column-side fixing device and the indoor side of the precast waist wall panel and contacts the indoor side, and the indoor side of the precast waist wall panel is provided with a sliding plate portion with which the access adjustment member can slide in contact.

5. The precast waist wall panel installation structure according to any one of claims 1 to 4, further comprising a sliding plate material that reduces friction between the head side of the upper fastening member and the column side fixing device.

6. A precast waist wall panel installation structure according to any one of claims 1 to 5, characterized in that the lower fixing portion comprises a foundation-side fixing device fixed to an anchor portion buried in the upper part of the foundation and positioned at the top of the foundation, a lower insert fastening portion attached to the lower side of the indoor side of the precast waist wall panel, and a lower fastening member that fastens the foundation-side fixing device and the lower insert fastening portion.

7. 7. A precast spandrel wall panel installation structure according to claim 6, wherein the foundation-side fixing device is fixed to the upper part of the anchor portion by welding.

8. A precast waist wall panel installation structure according to any one of claims 1 to 7, characterized in that the precast waist wall panel is placed on the upper recess of the foundation, and the flat underside of the precast waist wall panel is located above the base plate of the column.

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