JPH0314965B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to retaining wall mounting brackets, and is particularly applicable to foundations and walls of roads and railways constructed by embankment construction in order to cope with crustal deformations such as earthquakes and ground subsidence. This invention relates to retaining wall mounting brackets that prevent walls from collapsing.

[Prior Art] Generally, when constructing an embankment, a retaining wall is formed to reinforce and exteriorize the embankment, and this retaining wall includes an inclined retaining wall and a vertical retaining wall. For example, when forming a vertical retaining wall, concrete blocks, steel plates, or net materials are used, and the vertical retaining wall is supported from the back side of the retaining wall by support means made of tensile material against the embankment pressure. .

As a result, it is of great help in the maintenance of the foundations and walls of roads and railways, which have severe undulations.

[Problems to be Solved by the Invention] By the way, in conventional retaining wall structures, in order to cope with crustal deformation such as earthquakes and ground subsidence, supporting parts for retaining wall panels and tensile materials are required. There is a structure in which the retaining wall is integrally formed with the mounting part that connects it to the retaining wall (Special Publication No. 14844/1983). The attachment part is still provided with a connecting device that moves the tensile material in the vertical direction, and prevents the retaining wall from collapsing due to the sliding movement of the tensile material in the vertical direction when the ground subsides.

However, since the conventional mounting bracket has a support portion and a mounting portion, it is large in size, has a complicated structure, and is expensive.Moreover, since it has a support portion, there are limitations in the locations where it can be used.

In addition, in the connection device of the attachment part, when ground subsidence or crustal movements such as earthquakes occur, the tensile material is constantly slid in the vertical direction, which is perpendicular to the tensile direction of the tensile material, which is parallel to the horizontal direction. Therefore, there is a disadvantage that the connecting device and the tensile material are subject to significant wear and tear, resulting in a short service life.

[Object of the Invention] Therefore, in order to eliminate the above-mentioned inconvenience, the object of the present invention is to provide a mounting bracket with vertical movement and rotation means, thereby preventing vertical movement and rotation during crustal movements such as earthquakes and ground subsidence. to deal effectively with
It is an object of the present invention to provide a retaining wall mounting bracket that can reduce wear and tear on frictional parts of the mounting bracket, prolong its service life, and prevent the retaining wall from collapsing.

[Means for solving the problem] In order to achieve this object, the present invention attaches one end of the tensile material to the back surface of the retaining wall wall material, and attaches the other end of the tensile material to the wall material. In a retaining wall mounting bracket used for a retaining wall structure that is attached to a supporting means to be supported to form a retaining wall, an L-shaped cross section consisting of a plane part and a side part provided between the wall material and the tensile material. A long hole is formed in the flat part of the shaped mounting bracket so that the longitudinal direction is oriented in the vertical direction of this flat part, and a support bolt is inserted into the long hole to attach the mounting bracket to the back of the wall material. vertically moving means for movably attaching a mounting bracket to the wall material and locking the wall material to another wall material by means of the mounting bracket and a support bolt; The present invention is characterized in that it is provided with a rotation means for attaching one end of the tensile material so as to be rotatable about the one end.

[Examples] Examples of the present invention will be described in detail below based on the drawings.

1 to 4 show embodiments of this invention. In the figure, 2 is a retaining wall, and this retaining wall 2
is composed of a plurality of wall materials 4 assembled together. That is, the foundation material 8 is buried in the ground 6, and this foundation material 8
A foundation concrete 10 is provided on the upper part. This foundation concrete 10 is a wall material 4-
1, and the lower end of another wall material 4-2 is locked to the upper end of this wall material 4-1.

The upper end of the wall material 4-1 and the lower end of the wall material 4-2 are connected by a mounting bracket 12, and the mounting bracket 12 is formed into an L-shaped cross section by the plan view 14 and the side surface 16. . The mounting bracket 12 is provided with a vertical movement means 22 and a rotation means 32, which will be described later. More specifically, long holes 18, 18 for attaching wall material, which are long in the longitudinal direction, are formed in the plane part 14. When attaching the mounting bracket 12 to the back surface of the wall material 4, the longitudinal direction of the long hole 18 of the mounting bracket 12 is positioned in the same direction as the vertical direction, and the support bolts 20, 20 are inserted into the long holes 18, 18. and attach it. Thereby, the mounting bracket 12 constitutes a vertical moving means 22 that is movable in the vertical direction within the length L range of the elongated hole 18. Also, the side surface 16 of the mounting bracket 12
In this case, one end of the support portion 24 is rotatably provided via a mounting bolt 30, and one end of the cable-shaped connecting portion 26 is fixed to the other end of the support portion 24 to constitute a rotation means 32. Furthermore, a threaded portion 34 is provided at the other end of this connecting portion 26.
The threaded portion 34 of the connecting portion 26 is screwed onto one end of the tensile material 38 via the turnbuckle 36. An anchor plate 40 serving as supporting means is fixed to the other end of the tensile material 38.

When working on the base layer portion, which is the lower end of the wall material 4-1, the turnbuckle 36 is temporarily fixed.
Tensile material 38 is stretched on the ground 6, embankment 42 is applied to the lower end side of the anchor plate 40, and then rolling pressure is performed to fix the anchor plate 40. Next, on the back side of the wall material 4 that has not yet been backfilled, the unevenness of the wall material 4 is adjusted using the turnbuckles 36. Finally, the turnbuckle 36 portion is backfilled and compacted to complete the embankment work for the base layer.

Hereinafter, similarly to the above base layer part, the second layer, the third layer,...
By constructing the wall by performing embankment work,
Vertical retaining wall 2 is constructed.

This often occurs due to crustal movements such as earthquakes and ground subsidence.

When this crustal deformation causes a small amount of displacement, for example, a slight earthquake or a weak earthquake, the rotational movement of the wall material 4 side or the rotational member 28 side is centered around the axial direction of the mounting bolt 30 that connects the mounting bracket 12 and the rotational member 28. to prevent the retaining wall 2 from collapsing. At this time, the axial direction of the mounting bolt 30 is positioned parallel to the horizontal plane and perpendicular to the longitudinal direction of the connecting portion 26 of the rotating member 28, so that the mounting bolt 30 and the supporting portion 26 of the rotating member 28 Relatively small dynamic friction occurs, reducing wear and tear on the friction parts and extending the service life.

Furthermore, when the crustal deformation causes a large amount of displacement, such as a moderate earthquake, strong earthquake, or severe earthquake, ground subsidence often occurs along with vibration. This vibration is dealt with by the rotational movement of the mounting bolt 30 and the rotational member 28 mentioned above. Further, when the ground subsides, for example, only the ground of the foundation on the side of the wall material 4 subsides, the wall material 4 descends as the foundation material 8 and the foundation concrete 10 subside. At this time, the support bolt 20 attached to the back surface of the wall material 4 also descends in the same way, and this support bolt 20 descends within the length L of the elongated hole 18 of the mounting bracket 12. This prevents problems such as stress concentration on the mounting bracket 12, prevents the mounting bracket from being destroyed, prevents the retaining wall from collapsing due to ground subsidence, and prevents secondary disasters.

Furthermore, when only the embankment side sinks during the ground subsidence, the mounting fittings 12 are lowered together with the tensile members 38, contrary to the above, to prevent the retaining wall from collapsing.

Moreover, the two wall materials can be connected vertically by the mounting fittings, and can function as a connecting tool.

Note that the present invention is not limited to the above-described embodiments, and various modifications can be made.

For example, in the embodiments of the present invention, the mounting bracket is formed to have an L-shaped cross section, but the mounting bracket may also have a T-shaped cross-section, a hat-shape, or any other cross-sectional shape.

In addition, in the embodiment of the present invention, the vertical movement means was constituted by the elongated hole of the mounting bracket and the support bolt, but a groove was formed on the back surface of the wall material, and the mounting bracket was attached to the wall material in order to move within this groove. It is also possible to provide a support bolt to be attached, and to configure a vertical movement means by the groove and the support bolt.

[Effects of the Invention] As explained in detail above, according to the present invention, the mounting bracket is provided with the vertical movement means and the rotation means, so that the movement means and the rotation means can be easily used in the event of crustal deformation such as an earthquake or ground subsidence. The rotating means can be operated effectively as needed, stress concentration can be avoided, and the device has excellent pressure resistance and earthquake resistance. In addition, wear and tear on the mounting fittings can be effectively prevented, the service life can be extended, and collapse of the retaining wall can be prevented.

[Brief explanation of the drawing]

Figures 1 to 4 show examples of the present invention, Figure 1 is a schematic diagram showing the construction structure of the retaining wall, Figure 2 is a perspective view of the mounting bracket, and Figure 3 shows the rotating means of the mounting bracket. The side view and FIG. 4 are plan views showing the rotating means of the mounting bracket. In the figure, 2 is a retaining wall, 4 is wall material, 6 is ground,
8 is a foundation material, 10 is a foundation concrete, 12 is a mounting bracket, 14 is a plane part, 16 is a side part, 18 is a long hole, 20 is a support bolt, 22 is a vertical movement means, 2
4 is a support part, 26 is a connecting part, 28 is a rotating member, 3
0 is a mounting bolt, 32 is a rotating means, 34 is a threaded portion, 36 is a turnbuckle, 38 is a tensile material, 40
is the anchor plate, and 42 is the embankment.

Claims (1)

[Claims] 1. A retaining wall used in a retaining wall structure in which one end of a tensile material is installed on the back side of a retaining wall wall material, and the other end of the tensile material is installed as a support means for supporting the wall material to form a retaining wall. In the mounting bracket, a plane part of the mounting bracket having an L-shaped cross section and consisting of a plane part and a side part provided between the wall material and the tensile material is provided with a longitudinal direction so as to be oriented in the vertical direction of the plane part. A mounting bracket is attached to the back side of a wall material in which a long hole is formed with a certain direction and a support bolt is inserted into the long hole, and the mounting bracket is attached to the wall material so as to be movable up and down, and the mounting bracket is connected to the support bolt. A vertical moving means for locking the wall material and another wall material, and a rotating means for attaching one end of the tensile material to the side surface of the mounting bracket so as to be rotatable about the one end by means of a mounting bolt. A retaining wall mounting bracket characterized by being provided with.