JP3355414B2 - Roadway construction method on slope - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a traveling path on a slope.

[0002]

2. Description of the Related Art When a road, a railway line, or the like is passed through a foot of a mountain, a part of a slope must be cut off. At that time, conventionally, a slope is excavated sequentially from above to form a large number of small steps, and a traveling path is constructed in a state where a long excavated surface is exposed.

[0003]

The above-described conventional method for constructing a traveling path on a slope has the following problems. <B> Because a long slope with exposed earth and sand that has just been excavated is formed, it will disrupt the harmony of the surrounding environment and landscape. <B> In order to protect the excavated slope, it is uneconomical to construct a sloping frame and spray. <C> Even if the slope is protected, once the excavated long surface is exposed to wind and rain, it will have a bad effect on environmental conservation. <D> It takes time and effort to treat the earth and sand generated by excavation of a long slope.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and it is possible to leave a natural environment without disturbing the surrounding environment and landscape, and to protect a special slope. It is an object of the present invention to provide a method for constructing a traveling path on a slope, which can maintain a stable slope without construction.

[0005]

Means for Solving the Problems In order to achieve the above object, a method of constructing a traveling path on a slope according to the present invention is to cut a part of the slope to at least two upper and lower steps, or A method for constructing a multi-step traveling path as described above,
On the mountain side of the upper runway, an upper wall is constructed almost vertically using a deep foundation pile, etc., and the soil on the valley side is cut horizontally from this upper wall to build an upper runway. On the valley side, the lower wall is constructed almost vertically using deep foundation piles, etc., and the soil on the valley side is cut horizontally from this lower wall to construct the lower running path, It features a construction method of a traveling path.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for constructing a traveling path on a slope according to the present invention will be described below with reference to the drawings.

<A> Construction of upper wall surface The construction method of the present invention is a method of constructing a two- or more-stage running path having different heights in upper and lower steps by cutting a part of a slope. It is about. The method of constructing the upper and lower two-step traveling path will be described as an embodiment. First, the upper wall surface 2 is constructed in the ground on the mountain side at the position where the upper traveling path 1 is to be constructed. In order to construct the upper wall surface 2 in the ground, a number of deep foundation piles P are vertically or almost vertically arranged in a row adjacent to each other. Since the pile P is a method of constructing a pillar in the vertical direction from the surface of the slope, it is not necessary to cut the slope at this stage, and the cut surface is not exposed. Of course, the same purpose can be achieved not only by the deep foundation pile P but also by other conventionally known underground wall construction methods.

<B> Construction of upper runway 1 When piles P and underground walls are constructed almost vertically in the ground and the upper wall 2 is constructed in the ground, the soil on the valley side is sequentially removed from the upper wall 2. Cut it horizontally and lower it. An anchor for supporting the upper wall surface 2 is constructed in parallel with the cutting. When the horizontal cutting reaches a predetermined depth, the excavation is stopped, and a frame G is assembled on the horizontal surface with a grid of concrete beams. That is, the lattice frame G is placed in a state where it is mounted on an excavated plane. If the prestress cast concrete plates are sequentially laid and fixed on the upper surface of the lattice frame G, the upper traveling path 1 is completed. In the case of railways, additional rail work will be performed.

<C> Construction of lower wall surface On the valley side of the upper traveling path 1 completed in this way, a deep foundation pile P and the like are again constructed. Then, along the valley-side edge of the upper traveling path 1, an underground wall is formed vertically by a continuous pile P in the ground.

<D> Construction of lower traveling path After constructing the underground wall in the ground, the valley side of the underground wall is excavated to expose the underground wall. This exposed part is the lower wall 4
Becomes In this way, the soil on the valley side is sequentially cut horizontally to lower the board while exposing the lower wall surface 4. When the horizontal cutting reaches a predetermined depth, the excavation is stopped, and the lower traveling path 3 is constructed in the same manner as the usual roadbed construction. In the case of railways, additional rail work will be performed. In this way, the upper traveling path 1 and the lower traveling path 3 are constructed in two stages, upper and lower.

<E> Other Embodiments The case where the traveling path is constructed in two steps above and below has been described.
Not only two steps but also a plurality of steps can be constructed.
Further, as shown in FIG. 3, a slab 6 is constructed horizontally in the middle of a wall surface 5 constructed substantially vertically from the slope to the ground.
The structure in which the valley side edge is supported by a steel frame 7 installed vertically can also be adopted. The slab 6 is used as a ceiling to form a traveling path. In this case, if the top of the slab 6 is covered with soil and vegetation is applied to the surface of the covered soil, construction can be performed more in line with the landscape.

[0012]

As described above, the method for constructing a traveling road on a slope according to the present invention has the following effects. <B> Only the upper part of the road where the road is built is removed, and the other slopes are kept intact. <B> Therefore, a plurality of routes can be constructed without causing a large-scale destruction of nature. <C> Since large-scale excavation of earth and sand is not performed, the amount of earth and sand to be removed is small, and the work amount can be significantly reduced. Since there is no need to dispose of a large amount of earth and sand, the environmental impact of disposal of surplus soil can be minimized.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a method of constructing a traveling path according to the present invention.

FIG. 2 is a cross-sectional view of a completed traveling path.

FIG. 3 is a sectional view of another embodiment.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuhito Ikejiri 1-25-1, Nishishinjuku, Shinjuku-ku, Tokyo Inside Taisei Corporation (72) Inventor Kenji Kagata 1-25, Nishishinjuku, Shinjuku-ku, Tokyo No. 1 Taisei Corporation (56) References JP-A-61-186601 (JP, A) JP-A-4-16623 (JP, A) JP-A-59-2333028 (JP, A) -11825 (JP, B2)

Claims (1)

(57) [Claims] 1. A method for constructing at least two upper and lower traveling paths by cutting a part of a slope, wherein a number of deep foundation piles are adjacently located in the ground on a mountain side of an upper traveling path.
Vertically construct the upper wall surface side by side , cut the valley side soil from this upper wall surface horizontally,
The upper runway is constructed by assembling a concrete frame on the surface, and a number of deep foundation piles are adjacent to the ground on the valley side of the upper runway.
A method of constructing a runway on a slope, characterized by constructing a lower runway vertically by arranging the lower runway, and cutting the valley-side soil horizontally from the lower runway to build a lower runway.