JP2662380B2 - Road - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road on a slope.

[0002]

2. Description of the Related Art In Japan, where the land is narrow and there are many mountainous areas, in order to make effective use of slopes, roads are often created by breaking down slopes. As shown in FIG. 8, a road formed on this slope is formed by embedding material 33 being embedded in a space 32 between a retaining wall 31 erected perpendicularly to the slope 30 and the slope 30. I have.

[0003]

However, since the above-mentioned road supports the retaining wall on the slope, there is a danger that the slope will collapse due to the earth pressure acting on the retaining wall.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to prevent a slope from collapsing due to earth pressure acting on a retaining wall when a road is formed on the slope. It is.

[0005]

Means for solving the above problems are as follows: a retaining wall vertically erected on a foundation concrete provided at a lower part of a slope, and a multi-step shape on the slope. The PC frame of the ground anchor that is cast is connected by a connecting member, and the connecting member and the PC frame are connected by a pressing plate that presses the PC frame to the side of the slope by bending of the connecting member. An embankment material is filled in the embankment space surrounded by the surface and the retaining wall, and the pressing plate includes a pedestal plate adhered to a PC frame, and an upright plate rising at an end of the pedestal plate. And a joining piece is provided on the upright plate, and the embankment material is a lightweight embankment material.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a road on a slope according to the present invention will be described in detail with reference to the drawings. 1 is a sectional view of a road on a slope, FIG. 2 is a side view of an anchor plate, and FIG. 3 is a plan view of the same.

The road 1 has a retaining wall 3 erected vertically below the slope 2 connected to a ground anchor 4 cast in multiple steps on the slope 2 by a connecting member 5. And slope 2
A lightweight embankment material 7 is formed in an embankment space 6 surrounded by the retaining wall 3 and the embankment.

In the retaining wall 3, a large number of retaining wall blocks 9 are stacked on a foundation concrete 8, and these are made of PC steel rods 10.
Are connected by The base concrete 8 is prestressed by PC steel rods 10, and the retaining wall blocks 9 superposed thereon are also prestressed by PC steel rods 10 connected via couplers 11.

A joining member 12 protrudes at every second step of the retaining wall block 9, and a P
The connecting members 5 connected to the C frame 13 are joined, and each of them is covered with the cast concrete 14.
The embankment space 6 between the slope 2 and the retaining wall 3 is divided by the connecting material 5 and the concrete 14, and the lightweight embankment 7 is embedded in each of them.

Each of the connecting members 5 is made of a steel plate which bends downward due to the embankment load.
The C frame 13 is connected via a pressing plate 15. As shown in FIGS. 2 and 3, the pressing plate 15 is composed of a pedestal plate 16 and an upright plate 17, and the tip of the connecting member 5 is joined to the joining piece 18 at the tip of the upright plate 17 with a bolt 19. . Therefore, when the connecting member 5 is bent by the embankment load, the pressing plate 15 presses the PC frame 13 to the side of the slope 2 by leverage to prevent the ground anchor 4 from being pulled out and the slope 2 from collapsing. ing.

As described above, the road 1 according to the present invention has the PC steel rod 10
And the PC frame 13 of the ground anchor 4 is joined with the connecting material 5 to construct the connecting material 5 even if the lightweight embankment material 7 is settled and settled. It follows this by slightly bending. Further, the retaining wall 3 is supported by the ground anchor 4 by the connecting member 5 to prevent the retaining wall 3 from collapsing due to the load.

Next, a method for constructing this road will be described. First, a foundation concrete 8 is formed at the lower part of the slope 2 which has been cut to an appropriate angle, and a PC steel rod 10 is used to give a prestressed structure.

Then, two retaining wall blocks 9 are stacked on the foundation concrete 8 and the retaining wall 3 provided with prestressing is erected to form the embankment space 6 between the embankment and the slope 2.

Next, gravel 2 is applied to the slope 2 of the embankment space 6.
The ground anchor 4 is laid on the slope 2 located at the top of the retaining wall 3 while laying down the zeros. The ground anchor 4 supports the slope 2 by tensioning and fixing a tension member 22 having a distal end supported by an anchor body 21 to the PC frame 13, and at appropriate intervals along the lateral direction of the slope 2. It is cast in.

Next, the lightweight embankment 7 is inserted into the embankment space 6 while being compacted, and the retaining wall 3 and the PC frame 13 are connected by the connecting member 5. One end of the connecting member 5 is bolted to the PC frame 13 via the pressing plate 15, and the other end is bolted to the retaining wall 3 via the joining member 12. Next, a reinforcing bar is laid on the upper surface of the lightweight embankment material 7 and concrete 14 is poured into the first embankment portion 2.
3 is built.

After the first embankment 23 is formed, two more retaining wall blocks 9 are stacked to form the prestressed retaining wall 3 to form the embankment space 6.
Then, as shown in FIG.
Of the ground anchor 4, embedding of the lightweight embankment material 7 in the embankment space 6, connection of the retaining wall 3 to the PC frame 13 by the connecting material 5, and implantation of the concrete 14 on the upper surface of the lightweight embankment material 7 To form the second embankment portion 24.

Further, a third embankment 25 as shown in FIG. 7 is formed on the second embankment 24 by the same method as described above. Then, the roadbed 26 is formed on the third embankment 25 to construct the road 1 as shown in FIG.

As described above, the slope 2 is the ground anchor 4
It is supported by and is preventing it from collapsing. Furthermore, the ground frame 4 can be prevented from being pulled out by pressing the PC frame 13 against the slope 2 by using the bending of the connecting member 5. The embankment material is not limited to a lightweight embankment material, but may be a normal embankment material.

[0019]

According to the present invention, a retaining wall vertically provided on a foundation concrete provided at a lower part of a slope and a PC frame of a ground anchor which is laid in a multi-step shape on the slope are connected by a connecting member. The connecting member and the PC frame are connected by a pressing plate that presses the PC frame toward the slope by bending of the connecting member,
By filling the filling material into the space surrounded by the connecting member, the slope and the retaining wall, it is possible to prevent the slope from collapsing and prevent the ground anchor from being pulled out.

Since the pressing plate is composed of a pedestal plate for adhering to the PC frame and an upright plate rising at the end of the pedestal plate, when a lower force acts on the upstanding plate, the PC lever is actuated by leverage. The frame can be pressed against the slope.

By making the embankment material a lightweight embankment, the earth pressure acting on the retaining wall can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view of a road.

FIG. 2 is a side view of a PC frame provided with a pressing plate.

FIG. 3 is a partially omitted plan view of a PC frame including a pressing plate.

FIG. 4 is a cross-sectional view in which a foundation concrete is constructed on a slope.

FIG. 5 is a sectional view in which a first embankment is constructed.

FIG. 6 is a sectional view in which a second embankment is constructed.

FIG. 7 is a cross-sectional view in which a third embankment is constructed.

FIG. 8 is a sectional view of a conventional road.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Road 2,30 Slope 3,31 Retaining wall 4 Ground anchor 5 Connecting material 6,32 Embankment space part 7 Lightweight embankment material 8 Foundation concrete 9 Retaining wall block 10 PC steel rod 11 Coupler 12 Joining member 13 PC frame 14 Concrete 15 Pressing plate 16 Pedestal plate 17 Standing plate 18 Joint piece

Claims (3)

(57) [Claims] 1. A connecting wall is connected between a retaining wall vertically provided on a foundation concrete provided at a lower portion of a slope and a PC frame of a ground anchor cast in a multi-stage on the slope, The connecting member and the PC frame are connected by a pressing plate that presses the PC frame toward the slope by bending of the connecting member,
A road, wherein an embankment material is filled in an embankment space surrounded by the connecting member, the slope, and the retaining wall. 2. The pressure plate according to claim 1, wherein the pressing plate comprises a pedestal plate adhered to the PC frame and an upright plate rising at an end of the pedestal plate, and the upright plate is provided with a joint piece. The road according to item 1. 3. The road according to claim 1, wherein the embankment material is a lightweight embankment material.