JPH0821085A - Mountain retaining method using a wire mesh plate that does not need to be removed as the weir plate of the casting formwork - Google Patents

Abstract

PURPOSE:To use a wire netting plate having a mesh form capable of preventing the outflow of placed concrete in a sheathing board, and dispense with the removal of the sheathing board at form release. CONSTITUTION:Angle members 10A are raised at prescribed intervals on a foundation concrete A for land slide protection. A wire netting plate 20 is put thereon, angle members 10B are horizontally provided so as to cross it in grid, and the wire netting plate 20 is nipped between both the angle members 10A, 10B. A connecting member is inserted and fixed to both the angle members 10A, 10B and the wire netting plate 20 so that the dropping out can be prevented to form a mountain-side sheathing board B for a placing form C. A sheathing board D opposed to the wire netting plate 20 is also provided to form the placing form C, and concrete is placed thereto. At form release, the wire netting plate 20 is not removed but buried in the sand and earth as it is to construct a land slide protection.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a mountain cleat to prevent the collapse of soil such as mountains.

[0002]

2. Description of the Related Art In the conventional mountain clasp, basic concrete is placed in advance along the mountain side, and is provided in the basic concrete portion at a predetermined interval (a gap corresponding to the width of the mountain clasp to be formed) facing each other. It is formed by pouring concrete on the form made of the dam plate. At the time of forming such a mold, a predetermined gap is kept between the opposing barrier plates by a separator. Also, as shown in FIG. 4, the weir plate surface on the mountain side has a hydraulically adjustable jack and the like on the mountain side so that the formwork does not fall until the placed concrete is solidified. Supporting. After pouring concrete, the mold is removed and the space between the mountain side and the mountain side is filled with earth and sand to complete the mountain retaining.

[0003]

In such a conventional method, it is also necessary to remove the weir plate on the mountain side supported by the jack or the like at the time of demolding after placing concrete. Once the mountain cleat has been formed by placing concrete, the cleat that has been formed will rather obstruct the work, and the work of removing the jack and the weir plate in the narrow space between the mountain side slope and the mountain clutter is extremely troublesome. It will be Therefore, improvement of such working method and labor saving have been strongly demanded for a long time. Further, the present applicant has previously developed a wire netting plate for concrete splicing which can prevent the outflow of the poured concrete and increase the connection strength of the concrete.
3427 gazette), it was thought that labor-saving in the said work can be achieved by using such a wire mesh plate for a dam plate.

Therefore, the present invention uses a wire mesh plate having a mesh shape capable of preventing pouring concrete from flowing out as a dam plate to form a mold, thereby eliminating the need for removing the dam plate at the time of demolding. The purpose is to provide.

[0005]

In order to achieve the above object, the present invention relates to a mountain retaining method for constructing a concrete mountain retaining along a mountain surface or the like to prevent the collapse of earth and sand, and a predetermined interval for forming the mountain retaining. To form a form by facing the weir plate with a wire mesh plate whose mesh opening is a concrete outflow preventing shape for the weir plate facing the mountain side of the weir plate, and concrete casting to the form At the time of demolding after construction, the wire mesh plate is buried in the sand without removing the wire mesh plate to construct a mountain retaining. Further, the wire mesh plate is a metal mesh plate in which a large number of transverse cuts are made in the metal plate and the cutouts are opened by stretching the metal plate in the vertical direction. Are all tilted in the same direction, and the outer ends of the tilted parts are bent toward the original flat surface side of the metal plate to form a metal plate having a substantially V-shaped cross section between the openings.

Further, the wire mesh plate is sandwiched between angle members which are erected at a predetermined interval on the foundation concrete for mountain fastening and a plurality of angle members which are laterally provided so as to intersect with the angle members, and At the lattice points where the angle members intersect, the connecting members are inserted into the angle members and the wire mesh plate so as to prevent them from coming off, and the wire mesh plates are fixed to the angle members.

[0007]

In the present invention, by using a wire mesh plate having a mesh having a shape capable of preventing the outflow of poured concrete as a weir plate, the weir plate is not removed after the concrete is poured, but is buried in the earth and sand as it is, and is piled up. To form. Further, since the wire mesh plate is built in the formed mountain clasp, the strength is strengthened as compared with the conventional one. In particular, the upper and lower sides of a large number of openings in a metal plate are all inclined in the same direction, and the outer ends of the inclined parts are bent toward the original flat surface side of the metal plate, resulting in a substantially V-shaped cross section between the openings. Therefore, the opening area of the inclined part is narrowed near the outer end without linearly increasing the opening area toward the outer end, and the outer end of the inclined part is directed toward the base side of the wire mesh plate. Because it is bent,
Even if the wire mesh plate having such mesh openings is used as the weir plate, the poured concrete can be prevented from flowing out from the mesh openings.

The wire mesh plate is fixed by mounting the wire mesh plate on a plurality of angle members which are erected at a predetermined interval on the foundation concrete.
Further, the angle members laterally crossed at a predetermined interval so as to intersect the angle members in a grid pattern are placed on the wire mesh plate, and the wire mesh plate is sandwiched and fixed at the intersecting positions of both angle members. In particular, at the intersecting position of both angle members, the wire mesh plate is inserted into the side surface of both angle members and the mesh opening of the wire mesh plate so that the connecting member does not come off with the wire mesh plate sandwiched between the angle members. Can be fixed to the angle member.

[0009]

Embodiments of the present invention will be described with reference to the drawings. In the method of the present invention, as shown in FIG. 1 (a), the wire mesh plate 20 is first placed on the angle members 10A standing on the foundation concrete A for mountain fastening at a predetermined interval, and the wire mesh plate 20 is vertically moved. A plurality of angle members 10B are laterally crossed at a predetermined interval, and a wire mesh plate 20 is sandwiched between the upright angle member 10A and the lateral angle member 10B. A casting form C for use is formed. After the casting form C has been formed, concrete is placed, and as shown in FIG.
It is a construction method in which 0 is not removed, but buried in the earth and sand to build a mountain retaining structure.

The wire mesh plate 20 used in this embodiment is shown in FIG.
As shown in (a) and (b), a large number of cuts are provided in parallel in the horizontal direction on the metal plate and are shifted by one pitch for each step, and each cut is opened by stretching the cuts in the vertical direction. A large number of mesh openings 21 are formed. Further, the mesh opening 21 is formed in an inclined portion 22 in which the upper and lower cuts are inclined about 45 degrees in the same direction. As shown in FIG. 2 (c), a fixed blade and a moving blade that projects inward in a square shape and moves in the direction of the arrow are used when making the above incision in the wire mesh plate 20, so that the inside of the incision is Is bent and then stretched as described above, so that the sloping portion 22
Is formed so as to have a V-shaped cross section having the bent portion 23. When the wire mesh plate 20 is used as the dam plate B, the inclined portion 22 is attached to the outside of the dam plate B (toward the mountain side) so that concrete does not flow out from the mesh opening 21. You can

On the other hand, the angle member 1 used in this embodiment
0A and 10B are formed in an L-shaped cross section, and are provided with insertion openings 11A and 11B used for connection, which will be described later. The insertion openings 11A are formed in an elongated rectangular shape, and are provided at a plurality of predetermined intervals such that the longitudinal direction thereof is orthogonal to the longitudinal direction of the angle member 10A. The insertion openings 11B are also formed in an elongated rectangular shape, and the longitudinal direction thereof is provided at a plurality of predetermined intervals along the longitudinal direction of the angle member 10B. Also, the angle members 10A, 1
OB can be made the same shape by forming the shape of the insertion opening provided on the side surface in a cross shape.
Alternatively, the insertion openings may be provided on both side surfaces of one angle member, the insertion openings 11A may be provided on one side surface, and the insertion openings 11B may be provided on the other side surface. 10A and 10B may have the same shape.

The angle members 10A and 10B having the above structure
And the wire mesh plate 20 are used to form a mountain clasp as follows. First, as shown in FIG. 3 (a), one end of a mounting member 30 made by bending a rectangular iron plate into a crank shape is mounted with a concrete nail 31 on the side facing the mountain side of the foundation concrete A for mountain retaining. The other end of the mounting member 30 is inserted into the mesh opening 21 of the wire mesh plate 20 while the hem side portion 20a of the wire mesh plate 20 is in contact with the basic concrete A surface. Furthermore, while holding the one end 10a of the angle member 10A having an L-shaped cross section and provided with insertion openings 11A at predetermined intervals in the longitudinal direction of the side surface so as to stand and contact the foundation concrete A portion for mountain retaining, The other end 30 of the mounting member 30 is provided in the opening 11A.
The wire mesh plate 20 is sandwiched between the mounting member 30 and the angle member 10A by inserting a. In this state, the wedge member 40 is driven into the insertion end side of the mounting member 30 to fix the angle member 10A and the wire mesh plate 20 so as not to come off from the mounting member 30. Note that, in FIG. 3A, the wire mesh plate 20 and the mesh opening 21 portion thereof are shown only in abbreviated part for easy viewing.

In this way, the hem side portion 20 of the wire mesh plate 20
3A is fixed to the lower portion of the upright angle member 10A by the mounting member 30, and as shown in FIG. 3B, the upper portion of the wire mesh plate 20 is further fixed to the upright angle member 10A as follows. . Upright angle member 1
A plurality of other angle members 10B are laterally passed in a grid pattern so that the wire mesh plate 20 is sandwiched therebetween in accordance with the insertion openings 11A provided on the side surface of 0A at a predetermined interval. In that state, the flat plate-shaped insertion piece 50 of the connection member 50 including the insertion piece 50a and the connection piece 50b is inserted into the insertion openings 11A and 11B of both the angle members 10A and 10B and the mesh opening 21 of the wire mesh plate 20.
Insert the a side. With the insertion state maintained, the side surfaces of both angle members 10A and 10B sandwiching the wire netting plate 20 are brought into contact with the insertion opening 51 provided in advance in the plane portion of the insertion piece 50a of the connection member 50. The wedge member 40 is driven in, and the wire netting plate 20 is fixed by being sandwiched between the intersecting lattice points of the angle members 10A and 10B.

On the other hand, the connecting piece 50b of the connecting member 50 is formed in a semi-cylindrical shape having a substantially U-shaped cross section, and the side portion of the semi-cylindrical shape is provided so as to be orthogonal to the inserting piece 50a. A rectangular interval adjusting member 60 having a plurality of through holes 60a provided at a predetermined interval in a plane portion is inserted into the groove portion having a U-shaped cross section. At that time, the plurality of through holes 52 provided on both side surface portions of the semi-cylindrical shape of the connecting piece 50b and the space adjusting member 60.
Through hole 60a of each of the through holes 52 so that the connection length of the space adjusting member 60 and the connecting piece 50 becomes a predetermined length,
Select 60a and match. This through hole 52, 60a
A stopper 70 having a substantially cylindrical shape matching the diameters of the through holes 52 and 60a is inserted into the connecting member 50 and the space adjusting member 6
0 is connected via a connecting piece 50b.

On the other hand, the other of the space adjusting members 60 is a weir plate D facing the weir plate B formed of the wire mesh plate 20 (FIG. 1A).
It was shown to. ) Side to form a casting form C where the dam plates B and D face each other at a predetermined interval. In this embodiment, metal foam is used as the dam plate D. After that, the casting form C
Pour concrete into the mold and remove it when the concrete has solidified to some extent. At the time of demolding, the wire mesh plate 20 is left as it is, and the opposing dam plate D of the wire mesh plate 20 is removed. further,
The side of the wire mesh plate 20 of the mountain clasp is filled with earth and sand to construct the mountain clasp.

[0016]

EFFECTS OF THE INVENTION According to the present invention, a wire mesh plate having a mesh opening for preventing concrete outflow can be used as a weir plate and can be buried in the earth and sand without demolding as it is. Form work considering the workability at the time of mold making and work of removing the weir plate at the time of demolding are not required, and labor saving can be strongly achieved by significantly reducing the number of construction steps. Further, in the present invention, the wire mesh plate is buried in the earth and sand together with the cast concrete as it is and remains inside the mountain cleat to serve as a reinforcing material, so that the internal strength of the mountain cleat is improved as compared with the mountain cleat without the wire mesh plate. be able to.

[Brief description of drawings]

FIG. 1 is an explanatory sectional view (a) showing a formation state of a casting form according to the present invention. Sectional explanatory drawing (b) of the mountain clasp constructed by burying the wire mesh plate as it is after pouring concrete.

FIG. 2 is a plan explanatory view (a) and a cross sectional explanatory view (b) of the wire netting plate. The partial explanatory view (c) which shows the situation which forms the mesh opening of a metal mesh plate.

FIG. 3 is a perspective view (a) showing a state in which a wire mesh plate is fixed to an angle member using a mounting member. FIG. 6B is a perspective view showing a state in which the wire mesh plate is sandwiched between angle members and fixed by a connecting member.

FIG. 4 is a cross-sectional explanatory view showing a formation state of a conventional pile-mounting formwork.

[Explanation of symbols]

 10A Angle member 10B Angle member 11A Insert opening 11B Insert opening 20 Wire mesh plate 21 Mesh opening 30 Mounting member 40 Wedge member 50 Connecting member 50a Inserting piece 50b Connecting piece 60 Space adjusting member A Basic concrete B Weir board C Casting type Frame D Weir plate

Claims (3)

[Claims] 1. In a mountain retaining method for constructing a concrete mountain retaining along a mountain surface or the like to prevent the collapse of sediment, in the mountain retaining formation, weir plates are made to face each other at a predetermined interval to form a form, and the weir plate is formed. Among the weir plates facing the mountain side, a wire mesh plate with mesh openings having a concrete outflow preventing shape is used, and at the time of demolding after placing concrete on the formwork, without removing the wire mesh plate A mountain retaining method in which a wire mesh plate that does not need to be removed is used as a weir plate for a casting form, which is characterized by being buried in the structure to construct a mountain retaining structure. 2. The wire mesh plate is a metal mesh plate in which a large number of transverse cuts are made in a metal plate and the cuts are opened by stretching the metal plate in the vertical direction. The upper and lower parts of are all tilted in the same direction,
The removal according to claim 1, characterized in that the outer ends of the inclined portions are bent toward the original flat surface side of the metal plate, and the openings have a substantially V-shaped cross section. Mountain retaining method that uses unnecessary wire mesh plate as the dam plate of the casting form. 3. The wire mesh plate is sandwiched between an angle member that is erected at a predetermined interval on the mountain fastening base concrete and a plurality of angle members that are laterally provided so as to intersect with the angle member, and 3. The wire mesh plate is fixed to the angle member by inserting the connecting member between the angle members and the wire mesh plate so as to prevent the angle member from intersecting at the intersecting lattice points. A mountain retaining method that uses wire mesh plates that do not need to be removed as the weir plate of the casting formwork.