JPH022831Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a guide wall formwork used in forming trench walls for concrete pouring.

Prior Art Conventionally, when creating a guide wall for pouring concrete, wooden template members were placed on opposing walls of a pre-prepared groove, and spacing members were passed between the template members to fix the spacing. After this, concrete pouring work was carried out.

Disadvantages of the conventional technology However, in the conventional construction method, the work of arranging and fixing template members at predetermined intervals and removing the formwork after concrete pouring is very troublesome, and the construction takes a long time. The problem was that it took time. Furthermore, the spacing between the template members tends to change depending on soil pressure and concrete pressure, making it difficult to cast concrete so that the groove spacing is a predetermined distance.

Purpose of the present invention The present invention solves the conventional problems mentioned above.
To provide a guide wall formwork that allows very easy arrangement, fixing and removal of template members and fixes groove spacing to predetermined dimensions without being affected by earth pressure or concrete pressure. With the goal.

Structure of the Present Invention In order to achieve the above object, the guide wall formwork according to the present invention includes a pair of template members arranged side by side with one side facing each other at a distance, and an intermediate portion between these template members. The present invention is characterized in that it has a support member disposed on the support member, and a hinge mechanism on both sides of the support member that connects the pair of template members so as to be able to move in parallel.

Embodiment Fig. 1 is a plan view of a part of the guide wall formwork according to the present invention, Fig. 2 is an enlarged sectional view taken along the line _A1 - _A1 in Fig. 1, and Fig. 3 is Fig. _{2 A2} -A. FIG _{. 2} is a cross-sectional view of main parts along two lines. In the figure, 1 and 2
is a template member. These template members 1 and 2 are made of strong plate-like members made of steel, iron, etc., and are arranged side by side at intervals with their inner surfaces 101 and 201 facing each other. In this embodiment, ribs 102, 202 are attached in a lattice pattern vertically or horizontally on the surfaces 101, 201, which are opposed to each other, to reinforce the mechanical strength. rib 102,
202 is fixed to the surfaces 101, 201 of the template members 1 and 2 by means such as welding. Side 1
Outer surfaces 103 and 20 opposite to 01 and 201
3 serves as a guide wall forming surface, so it is usually a flat plane.

3 is a support member disposed between the pair of template members 1 and 2. Like the template members 1 and 2, this support member 3 is constructed using a metal material with high mechanical strength such as steel or iron. In this embodiment, the cross section H extending along the height direction of the template members 1 and 2 is
vertical support members 301 of the shape are arranged at intervals along the length direction L of the template members 1 and 2, and
By fixing a connecting member 302 having an H-shaped cross section to the upper end surface of these vertical supporting members 301 by means such as welding, each vertical supporting member 301 is integrally connected and fixed.

Hinge mechanisms 4 to 7 connect each of the template members 1 and 2 to the support member 3. 41
-71 are arm members of hinge mechanisms 4-7, 42-72
and 43 to 73 are rotation axes. The template members 1 and 2 are connected to both sides of the support member 3 by the hinge mechanisms 4 to 7 so as to be movable in parallel in the vertical direction.

8-11 are each arm member 41- of the hinge mechanism 4-7
This is a stopper member that determines the upper limit of the upward rotation of 71, and in this embodiment, it is constituted by a member having an L-shaped cross section. These stopper members 8 to 11 are fixed to the side portions of a vertical support member 301 extending in the height direction by means such as welding.

12 and 13 are respective arm members 4 of the hinge mechanisms 4 and 5;
This is a stopper member that determines the lower limit of downward rotation of the arms 41 and 51, and is integrally welded to the lower side of the arms 41 and 51.

14 is a stopper member that determines the upper limit of upward movement of template members 1 and 2, and vertical support member 301
It is connected to the upper end of the body by screws 15 (see FIG. 1) or the like. In a state where the upper end surfaces of the template members 1 and 2 are in contact with the lower end surface of the stopper member 14, the distance D ₁ between the template members 1 and 2 becomes maximum.

16 is a hanging ring fixed to the end faces of the vertical support member 301 and the connecting member 302, and 17 and 18 are hanging rings fixed to the upper ends of the template members 1 and 2.

Next, with reference to FIGS. 4 to 7, the effects when using the guide wall form according to the present invention will be explained. First, as shown in FIG.
Suspension ring 1 fixed on connecting member 302 constituting
A rope 19 or the like is connected to 6, and this rope 19 is hoisted up using a hoist or the like. Then, the support member 3
is pulled upward a and lifted. At this time, since the arms 41 to 71 constituting the hinge mechanisms 4 to 7 rotate at the rotation axes 42, 43 to 72, 73, the template members 1 and 2 move in parallel in a direction toward each other, The shape is suspended on the left and right sides of the support member 3 with a minimum distance D ₂ shorter than the distance D 1 by _{2.ΔD 12} . The minimum distance D ₂ is such that the stopper members 12 and 13 attached to the arm members 41 to 71 are connected to the vertical support member 3.
It is fixed at a position where it contacts 01.

The guide wall formwork thus lifted is carried directly above the groove 20 previously formed in the ground. The groove 20 is excavated so that the width d ₁ is approximately equal to the maximum interval D ₁ of the guide wall formwork. Therefore, when suspended by the rope 19, the minimum distance _D2 between the template member frames 1 and 2 is equal to the groove 20.
The interval d is smaller than ₁ . That is, d ₁ >D ₂ .

Next, as shown in FIG. 5, the guide wall formwork is inserted and placed inside the groove 20. Here, the minimum distance D ₂ between the template member frames 1 and 2 and the distance d ₁ between the grooves 20
Since there is a relationship of d ₁ >D ₂ between the two, the guide wall formwork can be smoothly inserted into the groove 20.

After the support member 3 is inserted and placed in the groove 20, as shown in FIG. The arms 41 to 71 constituting the template rotate around the rotation shafts 42, 43 to 72, 73 so as to push the template members 1 and 2 apart. Then, at the positions where the arm members 41 to 71 abut against the stoppers 8 to 11, the maximum distance _D1 is reached, and the outer surfaces 101 and 201 of the template members 1 and 2 abut against the wall surface of the groove 20. In order to ensure adhesion to the wall surface of the groove 20 and to prevent fluctuations in the distance between the template members 1 and 2 due to earth pressure and concrete pressure, hanging rings 17 and 18 fixed to the upper end surfaces of the template members 1 and 2 are attached. The ropes 21, 22, etc. may be tied together and an upward pulling force a may be applied to the ropes. By doing this, pressing force is applied from the template members 1 and 2 to the wall surface of the groove 20, so the spacing due to earth pressure and concrete pressure is reduced.
D ₁ fluctuations can be prevented.

After the guide wall form is set in the groove 20 in this way, concrete or the like is placed around the groove 20. Here, as mentioned above, the groove 20
Since the spacing between the guide wall forms is accurately regulated by the spacing D ₁ of the guide wall formwork, the concrete placement position is also accurately determined by the spacing D ₁ .

Thereafter, as shown in FIG. 7, the rope 19 is connected to the hanging ring 16 of the support member 3, and the rope 19 is hoisted up using a hoist or the like as before. Then, the support member 3 is moved upward a
The hinge mechanisms 4 to 7
Arms 41 to 71 forming the rotation axis 42, 43 to 7
2 and 73, the template members 1 and 2 move in parallel in the direction toward each other, and the distance between them becomes the minimum distance D ₂ smaller than the width d ₁ of the groove 20, so that the guide wall mold The frame is easily pulled out from within the groove 20. Therefore, the removal work of the guide wall formwork becomes very easy, and the working time is significantly shortened.

Effects of the present invention As described above, the guide wall formwork according to the present invention includes a pair of template members arranged side by side with one side facing each other with a gap between them, and a pair of template members disposed between these template members. and a hinge mechanism that connects the pair of template members so as to be able to move in parallel on both sides of the support member, the work of arranging, fixing, and removing the template members is greatly simplified. It is possible to provide a guide wall formwork that can be easily formed and can fix the groove spacing to a predetermined dimension without being affected by earth pressure or concrete pressure.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a part of the guide wall formwork according to the present invention, Fig. 2 is an enlarged sectional view taken along line A ₁ - A ₁ in Fig. 1, and Fig. 3 is an enlarged sectional view taken on line A ₂ - A ₂ in Fig. 2. FIGS. 4 to 7 are cross-sectional views of main parts in FIG. 1, 2... Template member, 3... Supporting member, 4-7
...Hinge mechanism.

Claims (1)

[Claims for Utility Model Registration] (1) A pair of template members arranged side by side with one side facing each other at a distance, a support member disposed between these template members, and this support member. A guide wall formwork, characterized in that it has a hinge mechanism on both sides of which connects the pair of template members so as to be able to move in parallel. (2) The guide wall formwork according to claim 1, wherein at least two sets of the hinge mechanisms are provided at intervals in the height direction of the support member. (3) The support member has a member at one end in the height direction that abuts and positions one end surface of the pair of template members, as claimed in claim 1 or 2 of the utility model registration claim. Guide wall formwork as described in . (4) The support member has a stopper that comes into contact with the arm member constituting the hinge mechanism and prevents the arm member from rotating. Guide wall formwork as described in .