JPH0739701B2 - Wall panel mounting structure - Google Patents

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 seismic resistance.

(Prior Art) As one type of wall panel mounting structure, for example, a horizontal wall bolting construction method is known in which a large number of lightweight cellular concrete panels (hereinafter referred to as "ALC panels") are horizontally mounted on a frame to form an outer wall of a building. There is. As schematically shown in FIG. 7, hook bolts 2 are fixed to the left and right ends of each ALC panel 1 in a penetrating state, and the tips of the hook bolts 2 are welded to a pillar 3 of a skeleton. Each of these hook bolts 2 mainly receives a force that acts on the ALC panel 1 in a direction perpendicular thereto, and in order to receive the weight of the ALC panel 1, a receiving steel material 4 is provided as shown in FIG. The receiving steel material 4 is made of, for example, L-shaped steel and has a flat receiving surface 4a. For example, every five ALC panels 1 are welded to the columns 3 to receive and support the lower end surfaces of the left and right ALC panels 1. There is.

(Problems to be solved by the invention) However, during an earthquake, the frame and the wall panel are relatively
The displacement may occur as shown in the figure. However, in the above-described conventional structure, a force that the edge of the receiving steel material 4 strongly erodes the lower end surface of the ALC panel 1 acts between them, which is why In some cases, a crack c as shown in FIG. When such a crack c is generated, rainwater may invade through the crack c, thereby significantly damaging the building, and the expansion of the crack c may cause a dangerous situation such as a fragment of a wall panel falling. May invite.

The present invention has been made in view of the above circumstances, and an object thereof is to prevent the wall panel from being subjected to an unreasonable force due to an earthquake or the like, and to improve the durability and mounting reliability of the wall panel. To provide a wall panel mounting structure.

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

(Operation) In a normal state, the dead 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 skeleton. At this time, since the wall panel is received and supported by the receiving member in a surface contact state, stress is not concentrated on a part of the wall panel, and stable receiving and supporting is performed.

Then, even if the pillar and the wall panel are displaced so as to be relatively inclined due to an earthquake or the like, the wall panel and the receiving member correspond to the boundary between the descending inclined portion of the horizontal portion of the receiving surface. Since it is allowed to freely tilt around the corners as fulcrums, no undue force acts on the wall panel. Further, at this time, since both ends of the receiving surface are inclined downward and the end edges thereof are separated from the lower end surface of the wall panel, it is possible to prevent the end edge of the receiving member from biting into the lower end surface of the wall panel.

(Embodiment) An embodiment in which the present invention is applied to a lateral 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 the inside of the building. As shown in the figure, each pillar 11 that constitutes the skeleton is made of H-shaped steel and is erected in a line at an interval equal to the lateral dimension of the ALC panel 12, which is a wall panel. On the outer surface of the building of the pillar 11, two through angles 13 extending in the vertical direction are paired left and right and are fixed along the pillar 11 by welding. The ALC panel 12 is vertically stacked between the columns 11 with the back surfaces of both ends thereof being directed to the through angles 13, and is fixed to the columns 11 through the through angles 13 as follows.

That is, a plurality of stacked ALC panels 12 (3 to 5
As for the ALC panel 12 at the lowermost stage of each block, the bolts 14 as the mounting brackets are screwed into the anchor nuts (not shown) that are embedded at the left and right sides of each block. The fixed plate 15 with is fixed. The tip of the fixed plate 15 is fixed to the through angle 13 by welding, and thus the ALC
The panel 12 is fixed to the pillar 11. Further, for the ALC panel 12 positioned above that other than the bottommost stage, flat plate-shaped mounting plates 16 are also mounted on the left and right sides thereof with bolts 14, and the tip end of the mounting plate 16 is welded to the through angle 13. ing. A long hole 16a extending in the lateral direction is formed in the mounting plate 16, and a bolt 14 screwed into the anchor nut penetrates therethrough. Therefore, the ALC panel 12 is allowed to move laterally with respect to the pillar 11 by the length of the long hole 16a.

Now, the ALC panel 1 attached to each pillar 11 in this way
In order to receive the self-weight of 2, a plurality of steel plate receiving members are provided corresponding to the lower surfaces of both ends of the ALC panel 12 at the bottom of each block.
17 are provided. As shown in FIG. 3, the receiving member 17 has a substantially L-shaped cross section including a vertical surface 18 having a flat surface along the column 11 and a receiving surface 19. As shown in FIG. 4, the receiving surface 19 has a shape in which the central portion extends in a substantially horizontal direction and both end portions are inclined downward. In this case, as shown in FIG. 4, the boundary portion 19a between the horizontal portion and the inclined portion of the receiving surface 19 is formed to have a gentle curved surface, and the bending angle of the inclined portion with respect to the horizontal portion is the inclined portion. The ratio of the descending amount b to the length dimension a of is b / a ≧ 1/6
It is set to be 0 (for example, b / a = 3/20). This bending angle is such that even if the skeleton is deformed by the inter-layer deformation angle of 1/60, the inclined portion does not become horizontal, and the edge 19b of the receiving surface 19 is A
It does not come into contact with the lower end surface of the LC panel 12. In this receiving member 17, each vertical wall surface 18 is welded to the through angle 13, and is fixed to the column 11 in a state where the central portion of the receiving surface 19 is extended in the horizontal direction. On the other hand, on the left and right ends of the lower end surface of the ALC panel 12, as shown in FIG. 1, two metal address plates 20 are attached by punching cut nails 21, respectively. It is placed on the receiving surface 19 while being in contact with the two receiving members 17 fixed to the pillar 11, and the weight of the ALC panel 12 is supported by the two receiving members 17.
At this time, both end edges 19b, 19b of the receiving surface 19 are not in contact with the lower end surface of the ALC panel 12.

Although not shown, the vertical and horizontal joints between the ALC panels 12 are filled with a flexible sealing material for waterproofing.

According to the above configuration, in the normal state, the weight of the ALC panel 12 is received and supported by the horizontal portion of the receiving surface 19 of the receiving member 17. At this time, since the ALC panel 12 is received and supported by the receiving member 17 in a surface contact state, the stress is not concentrated on a part of the ALC panel 12, and stable receiving and supporting is performed.

Then, in the unlikely event of an earthquake, the pillars 11 of the building will have ALC panels 1
If inclined with respect to 2, as shown in FIG. 5, the curved boundary portion 19a of the receiving surface 19 moves so as to relatively smoothly roll with respect to the ALC panel 12, so that the ALC panel 1
2 The state in which the receiving member 17 receives and supports the 2 is smoothly maintained. At this time, the edges 19b, 19b of the receiving surface 19 are ALC panels.
Since it is separated from 12, it does not bite into the lower end surface of ALC panel 12. As a result, it is possible to prevent the occurrence of cracks due to an unreasonable force acting on the ALC panel 12.
Further, particularly in this embodiment, the ALs other than the lowest stage of each block are
Since the C panel 12 is attached so as to be movable in the lateral direction, an unreasonable force does not act even on the anchor nut portion into which the bolt 14 is screwed in, and damage to the ALC panel 12 can be prevented even more effectively from this aspect.

As described above, according to this embodiment, the ALC panel 12 can be stably received and supported under normal conditions, and the receiving surface 4a has a flat plate shape even in the unlikely event of an earthquake.
Unlike the conventional one in which the crack c may be generated in the panel 1, it is possible to prevent the ALC panel 12 from being subjected to an excessive force as much as possible. Therefore, the durability of the ALC panel 12 and the reliability of mounting can be improved.

FIG. 6 shows a receiving member 22 according to another embodiment of the present invention. The receiving member 22 is formed by passing a flat steel plate through the angle 13
Is formed so as to have a groove 23 that can be engaged with, and then both end portions are bent downward, so that the center portion of the receiving surface 24 extends substantially horizontally and both end portions are inclined downward. It is shaped to The receiving member 22 is welded and fixed while being engaged with the angle 13 through the groove 23.
Since other configurations are the same as those of the above-described embodiment, description of the same parts will be omitted. If formed in this way, the receiving member 22
The fixing of the to the through angle 13 becomes more reliable.

In each of the above-described embodiments, the receiving members 17 and 22 are passed through the angle 1
Although it is attached to the column 3, the column 11 may be directly fixed to the column 11 by welding or the like, and the two receiving members 17 fixed to the column 11 are arranged side by side without being separated from each other. May be provided in. Further, in each of the above embodiments, the ALC panel 12
Although the anchor nut is embedded in the inside, a hook bolt as a mounting metal fitting may be penetrated through the ALC panel and the nut may be screwed into the hook bolt from the outside of the ALC panel. Further, the address plate 20 attached to the lower surface of the ALC panel 12 may be omitted.

Besides, the present invention is not limited to each of the above-described embodiments, and can be appropriately modified and implemented within a range not departing from the gist, for example, the present invention can be applied not only to an ALC panel but also to a mounting structure of a precast concrete plate.

[Effects of the Invention] As is clear from the above description, according to the wall panel mounting structure of the present invention, the receiving surface of the receiving member has a shape in which the central portion extends substantially horizontally and the both end portions are inclined downward. Since both edges of the receiving surface are in non-contact with the lower end surface of the wall panel,
It can stably receive and support the wall panel under normal conditions, and can prevent unreasonable force from acting on the wall panel even during an earthquake, ensuring durability and mounting reliability for the wall panel. It has an excellent effect that it can be improved.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention, FIG. 1 is a vertical sectional front view of an essential part, FIG. 2 is a perspective view from the inside of a building,
FIG. 3 is a perspective view of an essential part, FIG. 4 is an enlarged front view of a receiving member, FIG. 5 is a front view showing a state in an exaggerated manner when an earthquake occurs, and FIG. 6 is another view of the present invention. FIG. 3 is a perspective view of a main part showing the embodiment of FIG. 7 and 8 show a conventional example, which correspond 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 fitting), 17 and 22 are receiving members, 19 and 24 are receiving surfaces, and 19b is an edge.

Claims (1)

[Claims] 1. A structure in which a wall panel is attached to a frame of a building by a mounting bracket, and a receiving surface of a receiving member provided on the frame receives and supports a lower end surface of the wall panel. A mounting structure for a wall panel, characterized in that both ends of the receiving surface are in non-contact with the lower end surface of the wall panel in a shape in which a central portion extends substantially horizontally and both end portions are inclined downward.