JPS6358989B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for connecting welded reinforcing laths with waterproof paper as shown in FIG.

That is, as shown in Fig. 1, the known welded reinforcing laths 1 with waterproof paper are aligned in the longitudinal direction (horizontal direction in Fig. 1) and the width direction (vertical direction in Fig. 1). Intermediate member 3 having elongated holes 2l and 2s
(for example, kraft paper) and the holes 2l, 2.
Vertical reinforcing bars 4 crossed at right angles at s
The reinforcing bars 5 in the horizontal direction are welded together at each intersection point, and the back surface of the intermediate member 3 is lined with waterproof paper 6, sandwiching the reinforcing bars 5 in the horizontal direction. In No. 1, vertical reinforcing bars 4 and horizontal reinforcing bars 5 are welded into a checkerboard-like mesh.

Therefore, such a welded reinforcing lath with waterproof paper 1 can be used without installing separate plates between the main pillars and studs.
It has the great advantage of being able to directly attach it between the main pillars and studs and then applying mortar on top of it, which means there is no need to install separate boards.However, with the conventional method, the connection between each lath Because the method was not appropriate, the following problems remained.

That is, one of the conventionally known connection methods,
As illustrated in Fig. 2, the "over-bending construction method" involves the vertical reinforcing bars 4 of the lower lath 1 2 at the connecting part of the upper and lower laths 1 ₁ and _{1 2 that} are to be connected to each other. Cut the appropriate place 7 and continue the part 4a to the stump
This is a construction method in which the horizontal reinforcing bars 5 of the upper lath ₁₁ are bent. According to this construction method,
It is possible to connect the upper and lower laths 1 ₁ and 1 ₂ , but
In the joints connected by this construction method,
Between the horizontal reinforcing bars 5 and 5 of the upper and lower laths 1 ₁ and 1 ₂ ,
Since they are not firmly connected, the connecting parts of the upper and lower laths 1 ₁ and 1 ₂ move in the direction of the arrow when applying mortar, which has the disadvantage of causing cracks in the mortar.

Therefore, as a second method, in the conventional construction method, as shown in Fig. 2,
_The horizontal reinforcing bars 5 and 5, which are close to each other and parallel to each _other , were also tied together at key points using binding wires such as annealed iron wire. According to this binding method, it is possible to firmly connect the upper and lower laths 5, 5 without causing cracks in the mortar at the connecting part, but this method has the following drawbacks. . That is, one of the drawbacks is that the connection work using the binding wire 8 is still quite time-consuming even if done using a hacker;
However, it gets in the way of mortar painting. In particular, when the mortar is repelled by the binding wire 8, there is a great danger that the mortar will get into the eyes of the worker.

Therefore, this invention does not have the above-mentioned drawbacks, and allows the upper and lower laths to be easily worked at the connecting part.
The aim is to provide a method for connecting reinforcing bar welded laths with waterproof paper that can be connected extremely firmly and without causing cracks in the mortar applied to the connecting parts. Vertical reinforcing bars and horizontal reinforcing bars that intersect at right angles to form a mesh of shapes sandwich an intermediate member having holes aligned in the longitudinal direction and width direction, and at the above-mentioned position of this intermediate member. The intersection points of the two are welded together, and the back surface of the intermediate member is lined with waterproof paper with the horizontal reinforcing bars in between.
This is a method for connecting reinforcing bar welded laths with waterproof paper, in which the reinforcing bars in the vertical direction of the upper and lower laths to be interconnected are At least one horizontal reinforcing bar in each of the upper and lower laths is arranged in parallel and close to each other without any intermediate member or waterproof paper interposed between them, and any arbitrary Between the vertical reinforcing bars, the parts where the horizontal reinforcing bars of the upper and lower laths are brought closer to each other are deformed symmetrically into a dogleg shape, and then this pair of horizontal reinforcing bars are shaped like a dogleg. This method of connecting reinforcing bar welded laths with waterproof paper is characterized by rotating the protrudingly deformed parts in the same direction and twisting them together.

To explain the embodiment with reference to figures, the reinforcing bar welded lath 1 with waterproof paper as shown in Fig. 1 is attached to each main pillar 9 and Or, stretch the lath between 10 studs, starting from the lower right, and at the vertical and horizontal joints, overlap one or more meshes of reinforcing bars,
Also, the vertical seams should be stretched irregularly from the second row onwards so that they are not in the same place. In addition, at this time, the vertical joint is located only on the main pillar 9 or stud 10, and the vertical joint is not located between each pillar 9 or 10, and each joint part Now, in order to allow the mortar to pass around the reinforcing bars, the intermediate member 3 and waterproof paper 6 of the lath 1 stacked on top are cut out.

The lath 1 stretched between the main post 9 and the stud 10 as described above is fixed to the main post 9 and the stud 10 using U-shaped nails (not shown). The lath 1 is fixed to the columns 9, 10 with U-shaped nails at the locations where the horizontal reinforcing bars 5 cross the vertical reinforcing bars 4, for example, every three meshes. The above construction method is the same as the conventional construction method.

Next, the joints of the horizontal reinforcing bars 5, 5 of the upper and lower laths 1 ₁ , 1 ₂ are connected by the connection method according to the present invention. For example, between each main pillar 9 and stud 10 and between each stud 10, 10,
Or, in three places, by the connection method according to the present invention, horizontal reinforcing bars 5, which are close to each other on the upper and lower sides,
All you have to do is connect 5 comrades.

That is, the main pillar 9 and the stud 1 are installed as described above.
In _the horizontal joint of the lath ₁ stretched between
The upper and lower laths 1 are aligned almost in a straight line, and the upper and lower laths 1
Since the two horizontal reinforcing bars 5, 5 of ₁ , 1, _{and 2} are arranged in parallel and close to each other, there is a gap between each main column 9 and stud 10, and between each stud 10, 1.
Between arbitrary longitudinal reinforcing bars 4 and 4 between 0,
A pair of mutually close horizontal reinforcing bar portions 5a and 5b of the upper and lower laths 1 ₁ and 1 ₂ may be connected to each other.

The method of this invention can be carried out very easily by using a hacker 11 having the structure shown in FIG. 4. First, the shape of the hacker 11 will be explained. a straight body portion 11a having a straight body portion 11a;
a first hook portion 11b bent at 90 degrees from the tip;
From the tip of this first hook part, both parts 11a, 1
The hook 11 is formed from a second hook portion 11c that is further bent in a direction perpendicular to the plane including _{1b .} The first hook portion 11b is first placed perpendicularly between the horizontal reinforcing bar portions 5a and 5b which are close to each other, as shown in FIG. After insertion, the main body portion 11a is rotated about the first hook portion 11b and brought down to the state shown in FIG. 6, so that the second hook portion 11c faces in a direction perpendicular to the laths 1 ₁ and 1 ₂ . . Therefore, after reaching this state, if the main body portion 11a is rotated by more than 180 degrees in the direction of the upper arrow A in FIG. 6, the upper lath 1 ₁
The horizontal reinforcing bar portion 5a is the first hook portion 11
b is pushed in the direction of arrow B, and the lower lath 1 ₂
The horizontal reinforcing bar portion 5b is the second hook portion 11
c, the horizontal reinforcing bars 5, 5 are pushed in the direction of the arrow R' and deformed symmetrically in a dogleg shape, and then the horizontal reinforcing bars 5, 5 are deformed in a doglegged shape.
The pieces 5b are rotated in the same direction by the hacker 11 and twisted together. Figure 7 shows the lower lath 1 as described above.
The horizontal reinforcing bar portion 5b of _{No. 2} is projected upward,
The horizontal reinforcing bars 5a of the upper lath ₁₁ are shown projecting downward and slightly twisted together. If the hacker 11 is replaced, further twisting can be done in the same way.

In the connection part according to the lath connection method of the present invention, it is sufficient that the reinforcing bars of the upper and lower laths are twisted together at least to the extent shown in FIG. 7, but more preferably. ,
It is better to further twist the pair of horizontal reinforcing bars 1a, 1b together in the ro and ro' directions (in the same rotational direction). Fig. 8 shows an example in which the reinforcing bars 5, 5 in the upper and lower sides in the horizontal direction are connected at three locations according to the method of the present invention. An example is shown. As shown in the same figure, if the upper and lower vertical reinforcing bars 4, 4 are also twisted together in the same manner as the method of this invention (point A in Figure 8), a stronger connection can be achieved. is obtained. Also, as shown in the same figure, the intermediate member 3 of the upper lath 1 ₁ and the waterproof paper 6
If you cut out a part of , the other horizontal reinforcing bars 5 of the lower lath 1 ₂ will also be exposed, so the upper and lower laths 1 ₁ ,
1 ₂ is a portion B where the horizontal reinforcing bars 5 are exposed in this way, and may be connected according to the method of the present invention (not shown).

As described above, the method for connecting the reinforcing bar welded laths with waterproof paper according to the present invention is to twist and connect the reinforcing bar portions 5a and 5b in the horizontal direction of the upper and lower laths at the seam of the laths. Therefore, at the joint part of mutually connected laths,
Since the horizontal reinforcing bars are doubled and strongly integrated, the upper and lower laths connected using this method are securely connected as if they were a single lath. It will be done.

Therefore, the connecting method of the present invention eliminates all the drawbacks of the conventional method as mentioned at the beginning, and provides the advantage of not causing cracks in the mortar at the lath joints. At the time of construction, using a hacker such as the one described above has the advantage that the construction can be done easily.

In addition, in the method of this invention, horizontal reinforcing bars are
Since the lath joints are twisted together and integrated, the horizontal reinforcing bars at this joint position should be about 2/3 to 1/2 as thick as the horizontal reinforcing bars that are not located at the lath joints. Even if it is not used, sufficient strength can be ensured at the connecting portion of the laths.

Therefore, in the laths connected by the method of the present invention, the upper two horizontal reinforcing bars 5 and the lower two horizontal reinforcing bars 5 in the lath shown in FIG. If each of the horizontal reinforcing bars 5 is made slightly thinner than the other intermediate horizontal reinforcing bars 5, the resistance to twisting of the horizontal reinforcing bars at the joint will be reduced. , the method of the invention has advantages such as ease of implementation, and at the same time
The cost reduction effect can be obtained by making the horizontal reinforcing bars at the joint part thinner without causing a decrease in strength.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view showing an example of a reinforcing bar welded lath with waterproof paper, and Fig. 2 shows a conventional method where the intermediate member and waterproof paper are omitted, showing the connecting part of the upper and lower laths at the joint of the laths. A perspective view, Fig. 3 is a front view showing the construction state of the lath, Fig. 4 is a perspective view of the cutter,
In Figures 5 to 7, the intermediate member and waterproof paper are omitted.
FIG. 8 is a perspective view showing the connecting portion of the laths according to the method of the present invention in the order of steps, and FIG. 8 is a partially cutaway front view showing the joint of the laths connected by the method of the present invention. 1, _{1 1} , 1 ₂ ...Reinforcing bar welded lath with waterproof paper, 4...
... Vertical reinforcing bars, 5... Horizontal reinforcing bars, 5a, 5
b... Horizontal reinforcing bar part (connection part).

Claims (1)

[Claims] 1 Vertical reinforcing bars and horizontal reinforcing bars that intersect at right angles to form a checkerboard-like mesh sandwich an intermediate member having holes aligned in the longitudinal direction and width direction, and A method for connecting reinforcing bar weld laths with waterproof paper, wherein the intersection points of the two are welded to each other at a position, and the back surface of the intermediate member is lined with waterproof paper with the horizontal reinforcing bars in between, At the vertical connection of waterproof paper-covered reinforcing bar weld laths that are to be connected to each other, the vertical reinforcing bars of the upper and lower laths that are to be connected to each other are aligned approximately in a straight line, and at least one of the upper and lower laths is aligned. Each horizontal reinforcing bar is arranged in parallel and close to each other without any intermediate member or waterproof paper between them, and between any longitudinal reinforcing bars, the horizontal direction of the upper and lower laths is The parts where the reinforcing bars are brought close to each other are deformed symmetrically into a dogleg shape, and then the parts where the pair of horizontal reinforcing bars are projected and deformed into a dogleg shape are rotated in the same direction. A method for connecting reinforced welded laths with waterproof paper, characterized by twisting them together.