JPH0129940B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a tiled PC board that constitutes the outer wall side of a concrete outer wall of a building.

(Prior art) In recent years, tiles have been increasingly used on exterior walls to improve the aesthetic appearance of buildings, but there are problems such as peeling of the tiles, and to solve this problem There are many examples of using a PC board. An example of this type of PC board is the one disclosed in Japanese Patent Publication No. 54-31293. The PC board in this example consists of a PC board main body and fixing reinforcing bars, and these reinforcing bars are a combination of chord members located above and below and connecting reinforcing bars that connect the chord members. The lower chord consists of two reinforcing bars arranged in parallel, which are buried inside the PC board body.
The connecting reinforcing bars are a large number of inverted V-shaped reinforcing bars, the base of each reinforcing bar is welded to two lower chord members, and the top part is fixed to one upper chord member.

(Problems to be Solved by the Invention) According to the above example, it is necessary to sequentially arrange inverted V-shaped reinforcing bars, which are independent items, at intervals on each of the two chord members, and Since it is necessary to weld to the upper chord while tilting, there is still room for further improvement in increasing the efficiency of the reinforcement work for anchoring reinforcing bars. In addition, as a general issue, before pouring concrete inside with the PC board installed,
The position of the PC board was adjusted, but the challenge was to make the adjustment work easier.

(Means for Solving the Problem) The tile driven PC board 1 of the present invention has a front surface serving as a tile driving surface, and a parallel chord truss 2 having an I-shaped cross section is exposed from the back surface. . The parallel string truss 2 includes a pair of upper and lower chord members 21, 22 located in parallel, and connecting plates 24, 2 between each upper and lower chord members.
It is combined with a truss-shaped belly member 23 connected via 4a. Each of the upper and lower string members 21 and 22 is a pair of string members 21a and 21 located in parallel, respectively.
b, 22, and 22a, the string members on the same side are connected at multiple points by connecting plates 24, 24a, and the belly member 23 is connected to the upper and lower chord members 21, 22 via both connecting plates 24, 24a. ing. The lower chord material 21 is
The upper chord member 22 is buried in the PC board 1, and is exposed from the back side of the PC board 1, and its upper end tip extends upwardly higher than the upper end surface of the PC board 1 adjacent to the PC board 1.
It is a protruding end for connecting with a. and
From the upper end of the upper chord member 22 of the PC board 1, it is connected to the beam 10.
A holding bolt 8 having a holding portion for holding the PC board 1 and adjusting the position of the PC board is provided protrudingly.
A connecting bolt 6 is provided rearwardly from the bottom of the back of the PC board 1 and has a connecting part for adjusting the position of the PC board and also for connecting to the protruding end of the upper chord member 22 of the PC board located adjacent to the lower part. ing.

(Example) An example of the present invention will be described below based on the drawings.

As shown in Figures 1 to 3, a parallel chord truss (Figure 4) 2 with an I-shaped cross section is attached to the PC board 1, and in the illustrated example, the truss extends vertically on both sides of the opening 11 of the PC board. The lower chord member 21 of this truss is
is buried in the PC board, and the upper chord member 22 is exposed at the back of the board. Both the upper and lower chord members 21 and 22 are fixed in parallel with a truss-shaped belly member 23 at a predetermined interval. As shown in FIGS. 4 and 5, both string members 21 and 22 are composed of two string members 21a and 21b and 22a and 22b, both of which are located parallel to each other in the horizontal direction. The upper end tips of the string members 22a and 22b of the upper chord member 22 extend upward higher than the upper end surface of the PC board 1, and have projecting ends for connecting with the connecting bolts 6 of the PC board 1a located above. It consists of Paired string members, namely 21a and 21
b, 22a, and 22b are connected at a plurality of locations by bands 24, 24a, which are connecting plates made of band plates.
The bands 24, 24a are arranged alternately or staggered. The top of the belly member 23 is fixed to the bands 24, 24a by welding, thereby connecting and fixing both the chord members 21 and 22. 3 is a tile arranged on the front side of the PC board 1, and this front side is the tile driving surface.

In addition, an insert 5 is buried in the lower part of the PC board with its opening facing outward from the back, and by screwing the rear end of the connecting bolt 6 into this insert, the bolt is horizontally extended outward from the back of the PC board. It is installed protrudingly.
As shown in FIGS. 1, 2, and 5, two connecting plates 7, 7 are attached to the threaded portion at the tip of the connecting bolt 6, and nuts 6a, 6a are located on the outside of the connecting plates. The protruding ends of the upper ends of the string members 22a, 22b of the PC boards adjacent to each other below can be held between the two coupling boards 7, 7. The nut 6a of the connecting bolt 6 and the connecting plate 7 constitute a connecting portion with the lower PC board. At the upper ends of the string members 22a and 22b, there is a connecting plate 24a as shown in FIGS.
A connecting plate 24b that is substantially the same as the connecting plate 24b is attached, and a retaining bolt 8 is inserted from the center of the connecting plate 24b.
It protrudes horizontally on the opposite side (right side) of PC board 1.
Attach nuts 8a, 8a to the threaded portion at the tip of the holding bolt 8.
is installed. As shown in FIG. 2, the tip of the holding bolt 8 passes through a mounting hole 9a in the vertical part of a holding member 9 made of an angle material and fixed to the upper surface of the flange of the beam steel frame 10a of the beam 10. The holding bolt 8 is fixed to the holding member 9 by holding the vertical portion of the holding member 9 between both nuts 8a. The mounting hole 9a is a long loose hole in the direction perpendicular to the surface of the second drawing, and the holding bolt is in the vertical direction (horizontal direction of the PC board).
The holding member 9 and the nut 8a constitute a holding portion of the holding bolt 8.

In FIG. 3, the flat chord trusses 2a located laterally on both upper and lower sides of the opening 11 also have substantially the same configuration as the parallel chord truss. The holding bolt may be provided depending on the placement position.

Next, how to use it will be explained.

First, install the PC board 1 on the outer wall side with the tile driving surface facing outward, and connect the tip of the retaining bolt 8 to the retaining member 9.
The PC board is fixed to the beam steel frame 10a via the holding bolt and the holding member by passing through the mounting hole 9a and tightening the nuts 8a, 8a. Next, the upper PC board 1a (Fig. 2) is also fixed at its upper part to the beam steel frame.
The string members 22a, 22b of the PC board 1 located below are clamped by the connecting plates 7, 7 of the lower connecting bolt 6, and the clamped parts are fixed with nuts 6a, 6a.
The upper and lower PC boards 1 and 1a are connected. Then the PC
Arrange wall reinforcements 4 and 4a (Fig. 2) on the back side of plates 1 and 1a, assemble an inner formwork at a predetermined distance from the wall reinforcements, and place concrete between the PC board and this formwork. to be poured.

Here, the adjustment work for the installation positions of the PC boards 1 and 1a will be explained.

To adjust the front and back of the PC board 1 (left and right in Figure 2),
This is done by moving the holding bolt 8 back and forth around the holding member 9. For horizontal adjustment, use the holding bolt 8.
This is carried out by moving the holding member within the mounting hole 9a in a direction perpendicular to the plane of FIG. 2. The lower side of the PC board 1 is adjusted by moving the connecting bolt 6 back and forth or left and right. The PC board 1a is also adjusted in the same manner.

As explained above, according to the present invention, both the upper and lower string members of the parallel string truss attached to the PC board are composed of paired string members, and the belly member is fixed to the connecting plate that connects the string members. As a result, assembly efficiency can be improved compared to conventional examples, and it is easier to use during use.
Connection between PC boards is easy, and since the parallel chord truss has an I-shaped cross section, it has greater rigidity than conventional truss bars with a triangular cross section, and eliminates warping of the PC board when it is manufactured and demolded. Can be done. PC boards can be set in accurate positions by adjusting the position of the PC board itself and adjacent PC boards.

[Brief explanation of drawings]

Figure 1 is a sectional view, Figure 2 is an enlarged sectional view showing the connected state of the PC board, Figure 3 is a rear view of the PC board, and Figure 4 is a cross-sectional view.
The figure is an enlarged cross-sectional view of FIG. 1, with the PC board omitted, FIG. 5 is an enlarged cross-sectional view of FIG. 2, and FIG. 6 is an enlarged cross-sectional view of FIG. 1. . 1, 1a... PC board, 2, 2a... Parallel string truss, 6... Connection bolt, 6a... Nut, 7...
Connection plate, 8... Holding bolt, 8a... Nut, 9
...Holding member, 21, 22... Chord material, 21a, 2
1b, 22a, 22b... string member, 23... belly member, 24, 24a... connection plate.

Claims (1)

[Scope of Claims] 1. An upper chord member and a lower chord member each consisting of a pair of string members, a connecting plate that connects the string members of the upper chord member and between the string members of the lower chord member at a plurality of points, and a connection on the upper chord member side. A parallel chord truss with an I-shaped cross section is comprised of a truss-shaped belly member that connects the plate and a connecting plate on the lower chord side, and the lower chord member is buried in the PC board, and the upper chord member is embedded in the PC board. The upper end tip exposed from the back of the above PC board is
It has a protruding end that extends higher than the upper end surface of the PC board, and a connecting bolt is provided protruding rearward from the lower back of the PC board, and the upper end of the upper chord member is used to adjust the position of the PC board. A holding bolt that also has a holding part for holding onto the beam is provided protruding in the same direction as the above-mentioned connecting bolt, and the above-mentioned connecting bolt has the function of adjusting the position of the above-mentioned PC board and is adjacent to the above-mentioned PC board below. A tile driven PC board characterized by being provided with a connecting part for connecting to the protruding end of the upper chord of the PC board.