JPH0351451A - Installation structure for wall panel - Google Patents

Abstract

PURPOSE:To prevent a wall from being damaged at the time of earthquake by making up each backing member in shape out of a center horizontal section and of descending slant sections at the both ends of it when the right and left end sections of a wall panel are backed up on the backing member fixed on the column of a building frame so as to be installed. CONSTITUTION:An angle 13 is welded to the wall panel 12 installation side of a column 11. Then, each backing member 17 the backing surface 19 of which is composed of a center horizontal section and of descending slant section at the both ends of it, is provided. In the second place, the backing members 17 are welded onto the column 11 so that multiple panels 12 are rested on said members. After a stationary plate 15 and an installation plate 16 have been threadedly attached to bolts 14 provided for the panels 12, the tip end sections of these plates are welded onto the angle 13 so that the panels 12 are fixed onto the column 11. This constitution enables the wall panels to be stably backed up ususally, and also prevents the end section of the backing member from cutting into the panels to the extent that the panels are cracked at the time of earthquake, thereby making it possible to enhance durability.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention (Field of Industrial Application) The present invention relates to a wall panel mounting structure with improved earthquake resistance.

(Prior Art) As a type of wall panel mounting structure, for example, a large number of lightweight aerated concrete panels (hereinafter referred to as rALC panels) are used.
A construction method is known in which horizontal wall bolts are attached to the building frame horizontally to construct the outer wall of a building.

The outline thereof is shown in FIG. 7, and hook bolts 2 are fixed to each ALC panel 1 in a penetrating state at both left and right ends thereof, and the tips of the hook bolts 2 are welded to pillars 3 of the frame. Each of these hook bolts 2 receives a force that mainly acts on the ALC panel 1 in a direction perpendicular to the ALC panel 1.
In order to receive the weight of the panel 1, a support steel 4 is provided as shown in the figure. This receiving steel material 4 is formed of, for example, L-shaped steel and has a flat receiving surface 4a, and is welded to the pillar 3 for every five ALC panels 1, for example, to receive and support the lower end surfaces of the left and right ALC panels 1. There is.

(Question 8 to be solved by the invention) However, during an earthquake, the building frame and wall panels are relatively
It may be displaced as shown in the figure. However, in the above-mentioned conventional structure, a force that causes the edge portion of the receiving steel material 4 to strongly bite into the lower end surface of the ALC panel 1 acts between them, and this causes cracks in the ALC panel 1 as shown in the figure. C sometimes occurred. If such a crack C occurs, rainwater will enter through the crack C, causing significant damage to the building, and may also cause dangerous situations such as wall panel fragments falling as the crack C expands. There is a risk of inviting

The present invention has been made in view of the above circumstances, and its purpose is to prevent as much as possible the application of excessive force to wall panels due to earthquakes, etc., thereby improving the durability of wall panels and the reliability of their installation. Provides mounting structure for wall panels.

[Structure of the Invention] (Means for Solving the Problems) A wall panel mounting structure according to the present invention is such that a wall panel is mounted on a building frame using a mounting bracket, and the wall panel is mounted on a building frame using a receiving surface of a receiving member provided on the frame. In the structure for receiving and supporting the lower end surface of the wall panel, the receiving surface of the receiving member has a shape in which a central portion extends in a substantially horizontal direction and both end portions are inclined downward, so that both edges of the receiving surface are aligned with respect to the lower end surface of the wall panel. The feature is that it is in a non-contact state.

(Function) Under normal conditions, the weight of the wall panel is received by the horizontal portion of the receiving surface of the receiving member fixed to the pillar of the frame. At this time, since the wall panel is received and supported by the receiving portion in a state of surface contact, stable support is achieved without concentration of stress on one part.

Even if the pillar and wall panel are displaced so that they are relatively inclined due to an earthquake, etc., the wall panel and the receiving member correspond to the boundary between the horizontal part and the downwardly sloping part of the receiving surface. Since the wall panel is allowed to tilt freely using the corner as a fulcrum, no unreasonable force is applied to the wall panel. Further, at this time, since both ends of the receiving surface are inclined downward and the edges thereof are spaced apart from the lower end surface of the wall panel, it is possible to prevent the edge of the receiving member from digging into the lower end surface of the wall panel.

(Example) Hereinafter, an example in which the present invention is applied to a horizontal wall construction method of an ALC panel will be described with reference to FIGS. 1 to 5.

Figure 2 shows the overall structure as seen from inside the building. As shown in the figure, each pillar 11 making up the frame is H
They are constructed using shaped steel and are erected in a row at intervals equal to the lateral dimension of the ALC panels 12, which are wall panels. Among the pillars 11, two through angles 13 extending in the vertical direction form a pair on the left and right on the outer surface of the building.
It is fixed by welding along the ALC panel 12
are stacked vertically between each pillar 11 with the back faces of both ends facing the through angles 13, and are fixed to the pillars 11 via the through angles 13 as follows.

That is, there are a plurality of ALC panels 12 stacked (3 to 3).
5) are considered as one block, and for the ALC panel 12 at the bottom of each block, bolts 14, which are mounting hardware, are screwed into anchor nuts (not shown) embedded in the left and right sides of the ALC panel 12. A stepped fixed plate 15 is fixed. The tip of the fixing plate 15 is fixed to the through angle 13 by welding, thereby fixing the ALC panel 12 to the column 11.

Furthermore, for the ALC panels 12 located above other than the lowest level, flat mounting plates 16 are attached to both left and right sides of the ALC panel 12 with bolts 14, and the tips of the mounting plates 16 are welded to the through angles 13. ing. This mounting plate 16 has a long hole 16 extending laterally.
A is formed, through which a bolt 14 screwed into the anchor nut passes. Therefore, the ALC panel 12 is allowed to move laterally relative to the pillar 11 by the length of the elongated hole 16a.

Now, in order to receive the weight of the ALC panel 12 attached to each pillar 11 in this way, a plurality of receiving members 17 made of steel plates are installed corresponding to the lower surfaces of both ends of the ALC panel 12 at the lowest stage of each block. It is provided. This receiving member 17
As shown in FIG. 3, the cross section includes a flat vertical wall surface 18 along the column 11 and a receiving surface 19, and has a substantially L-shaped cross section.

As shown in FIG. 4, each receiving surface has a shape in which the central portion extends substantially horizontally and both ends are downwardly inclined. In this case, as shown in Figure 4,
The boundary portion 19a between the horizontal portion and the inclined portion of the receiving surface 19 is formed to form a gently curved surface, and the bending angle of the inclined portion with respect to the horizontal portion is determined by the ratio of the amount of descent b to the length dimension a of the inclined portion. is set so that b/a≧1/60 (for example, b/a−3/20). This bending angle is 1/6 of the inter-story deformation angle of the building structure.
Even if it is deformed to zero, the inclined portion does not become horizontal, and the edge 19b of the receiving surface 19 does not come into contact with the lower end surface of the ALC panel 12. The receiving member 17 is fixed to the column 11 with each vertical wall surface 18 welded to the through angle 13, with the central portion of the receiving surface 19 extending in the horizontal direction. On the other hand, on both left and right ends of the lower end surface of the ALC panel 12, as shown in FIG.
0 is attached by driving a force nail 21 into each, and the destination plate 20 is placed on the receiving surface 19 in contact with the two receiving members 17 fixed to the left and right pillars 11, and the AL
The weight of the C panel 12 is supported by both support members 17. At this time, both end edges 19b of the receiving surface 19. 19b
is in a non-contact state with respect to the lower end surface of the ALC panel 12.

Although not shown, the vertical and horizontal joints between each ALC panel 12 are filled with a flexible sealant for waterproofing.

According to the above configuration, under normal conditions, the ALC panel 12
Its own weight is received and supported by one horizontal portion of the receiving surface of the receiving member 17. At this time, since the ALC panel 12 is received and supported by the receiving member 17 in surface contact, stable reception and support is achieved without concentration of stress on one part.

If the pillars 11 of the building are tilted with respect to the ALC panel 12 due to an earthquake, the curved boundary portion 19a of one receiving surface will be tilted relative to the ALC panel 12, as shown in FIG. Since the ALC panel 12 is smoothly rolled, the state in which the ALC panel 12 is received and supported by the receiving member 17 is maintained smoothly. At this time, since the edges 19b, 19b of one receiving surface are spaced apart from the ALC panel 12, they do not dig into the lower end surface of the ALC panel 12. This can prevent the occurrence of cracks due to excessive force acting on the ALC panel 12. Furthermore,
In particular, in this embodiment, since the ALC panels 12 other than the bottom row of each block are mounted so as to be movable in the horizontal direction,
No excessive force is applied to the anchor nut portion into which the bolt 14 is screwed, and damage to the ALC panel 12 can be more effectively prevented from this aspect as well.

In this way, according to this embodiment, in normal times, the ALC
It is capable of stably receiving and supporting the panel 12, and is different from conventional ones in which the receiving surface 4a is flat and there is a risk of cracks C occurring in the ALC panel 1 even in the event of an earthquake. This makes it possible to prevent excessive force from being applied to the ALC panel 12 as much as possible. Therefore, the durability and attachment reliability of the ALC panel 12 can be improved.

FIG. 6 shows a receiving member 22 according to another embodiment of the invention. This receiving member 22 is formed by cutting out a flat steel plate 9 so as to have a groove 23 that can be engaged with the angle 13, and then bending both end portions downward. has a shape in which the central portion extends substantially horizontally and both end portions slope downward. This receiving member 22 is fixed by welding while being engaged with the angle 13 through a groove 23. Since the other configurations are the same as those of the above embodiment, explanation of the same parts will be omitted. If formed in this way, the through angle 13 of the receiving member 22
The fixation becomes more secure.

In each of the above embodiments, the receiving members 17 and 22 are passed through and attached to the angle 13, but they may be fixed directly to the column 11 by welding or the like, or two pieces fixed to one column 11 may be attached. The receiving members 17 may be arranged side by side without being separated from each other. Furthermore, in each of the above embodiments,
Although the anchor nut is embedded in the ALC panel 12, a hook bolt serving as a mounting fitting may be passed through the ALC panel, and a nut may be screwed into the hook bolt from the outside of the ALC panel.

10 Furthermore, the destination plate 20 attached to the bottom surface of the ALC panel 2 may be omitted.

In addition, the present invention is not limited to the embodiments described in 2. For example, the present invention can be applied not only to ALC panels but also to mounting structures for precast concrete plates, and may be implemented with appropriate modifications within the scope of the gist. obtain.

[Effects of the Invention] As is clear from the above explanation, according to the wall panel mounting method of the present invention, the receiving surface of the receiving member is shaped so that the central portion extends substantially horizontally and both ends are downwardly inclined. Since both edges of the receiving surface are in a non-contact state with the lower end surface of the wall panel,
It can stably support the wall panel during normal times, and it can also prevent excessive force from being applied to the wall panel during an earthquake, improving the durability of the wall panel and the reliability of its installation. This has an excellent effect in that it can improve the performance.

[Brief explanation of drawings]

Figures 1 to 5 show one embodiment of the present invention,] 1 Figure 1 is a longitudinal sectional front view of the main part, Figure 2 is a perspective view from inside the building, and Figure 3 is a perspective view of the main part. 4 is an enlarged front view of the receiving member, FIG. 5 is a front view exaggerating the situation when an earthquake occurs, and FIG. 6 is a main part showing another embodiment of the present invention. FIG. 7 and 8 show conventional examples, and are equivalent to FIGS. 3 and 5, respectively. In the drawing, 11 is a pillar, 12 is an ALC panel (wall panel),
13 is a through angle, 14 is a bolt (mounting metal only), 17
．． 22 is the receiving portion, 19.24 is the receiving surface, and 19b is the edge.

Claims (1)

[Claims] 1. In a structure in which a wall panel is attached to a building frame using a mounting bracket, and the lower end surface of the wall panel is received and supported by a receiving surface of a receiving member provided on the building frame, the receiving surface of the receiving member is A wall panel mounting structure characterized in that the receiving surface has a shape extending substantially horizontally and having both ends inclined downward so that both ends of the receiving surface are in a non-contact state with the lower end surface of the wall panel.