JP2002294710A - Construction method for new route utilizing lightweight earth filling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce cost by continuously constructing a new route without closely building temporary scaffold for heavy machinery for the work in the lightweight filling method using EPS blocks or the like as a lightweight filling material. SOLUTION: An existing natural ground side is used as the first base where the heavy machinery is arranged, the lightweight filling material is piled up and a roadbed is formed. The heavy machinery is moved there as an advance base, the piling of the lightweight filling material and roadbed formation are performed there again, and the heavy machinery is advanced there again. This process is repeated up to a required length of route and the construction of the new route can be completed without separately assembling a temporary scaffold for the heavy machinery.

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 new line by a lightweight embankment method, and more particularly to a method for continuously constructing a new line without building a temporary scaffold for a heavy working machine. The present invention relates to a novel route construction method using a lightweight embankment method that enables the construction.

[0002]

2. Description of the Related Art A lightweight embankment method using a lightweight embankment material such as an EPS method is known as one of embankment methods on soft ground and landslides. This construction method is widely used in various civil engineering works because it has excellent effects in saving costs for ground improvement, shortening the construction period, improving earthquake resistance, and the like. In the construction, various civil works and work are required, such as maintenance of the support ground, loading and driving of H-shaped steel as a support pile, and stacking of lightweight embankment material such as expanded polystyrene block (EPS block). Various heavy machines such as crane trucks are used for such vehicles.

[0003] Fig. 4 shows an example of road construction by a lightweight embankment method, in which an existing road 1 formed on the top is widened to the slope side of an existing mountain. After the support ground 3 is prepared, the H-section steel 2 is erected, and the EPS block 4 as a lightweight embankment material is stacked between the H-section steel 2 and the support ground 3 to form an embankment having a predetermined height. Thereafter, concrete is poured into the entire surface of the stacked EPS blocks 4 to a predetermined thickness to form a concrete floor slab 5. Also, H
A wall protection material 7 such as a lightweight concrete plate is attached by using the shape steel 2.

Next, in order to prevent the concrete slab 5 and the EPS block 4 from being displaced in the horizontal direction, the tip of an anchor 6 embedded and fixed in the supporting ground 3 is fixed integrally to the concrete slab 5, and the earthquake This prevents the concrete floor slab 5 and the EPS block 4 from separating from the supporting ground 3 when the supporting ground 3 moves. After that, ground covering concrete 8
Then, as in the case of ordinary civil engineering work, the work for finishing the roadbed 9 and the asphalt 10 is performed, and the road widening work is completed.

[0005]

As described above, in the lightweight embankment method, heavy work such as maintenance of the supporting ground, loading and driving of the H-section steel, or stacking of the lightweight embankment material is indispensable. Large heavy equipment such as a crane truck is often used. However, the lightweight embankment method is originally used on soft ground and landslides, and it is not easy to secure a scaffold for heavy equipment near the construction site. Normally, as shown in FIG. 4, a temporary scaffold 2 for large heavy equipment is constructed by temporarily closing an existing road 1, for example.
0 is constructed close to the construction site, and the work is performed by the heavy equipment 21 using the temporary scaffold 20.

[0006] Since the working range of the crane truck or the like on the temporary scaffold 20 is limited to the length of the boom 22,
It is necessary to sequentially move the temporary scaffolding 20 along the construction line, and the cost of constructing and relocating the temporary scaffolding 20 accounts for a large proportion of the total construction cost. In the case of road widening work, it is possible to use the existing road 1 as a scaffold for the heavy equipment 21 over the entire work route,
In this case, the existing line 1 is removed from the common use for a long period during the work period, and is not a practical solution.

The present invention has been made in view of the above circumstances, and enables a new route to be continuously constructed without building a temporary scaffold for a heavy working machine.
Accordingly, it is an object of the present invention to provide a new route construction method using a lightweight embankment method capable of shortening the construction period and significantly reducing the cost required for construction.

[0008]

According to the present invention, there is provided a method for constructing a new route using a lightweight embankment method for solving the above-mentioned problems. A heavy equipment is placed there as the first base, and the heavy equipment is used to at least stack the lightweight embankment material for the new route and to perform an appropriate load dispersing process thereon, and to continue the new base to the first base. A new forward base, then move heavy equipment to the newly built forward base, perform the same work again, and build a continuous new forward base there repeatedly over the required line length. It is characterized by the following.

In the present invention, as the existing ground or existing building used as the first base, a stable ground close to a new line to be built is preferably used. In this case, it is only necessary to secure a space for one heavy machine, and it is easy to secure the space. If space is not available, temporarily use existing roads. In that case, that part of the existing road cannot be shared, but the sharing will be stopped for a short period of time until the next new base is created, and this will not be a major problem.

Using existing bases, civil works such as maintenance of supporting ground by heavy equipment and embedding of H-shaped steel are carried out in accordance with a procedure for constructing a new line by a normal lightweight embankment method.
The range is the range of the boom length of the used crane truck or the like. After that, a lightweight embankment material such as an EPS block is stacked at a predetermined height between the laid H-shaped steel and the support ground to form an embankment portion. A lightweight embankment made of a foamed resin, such as an EPS block, is self-supporting, and the angle of the stacking surface in the work advance direction can be made steeper than that of embankment made of earth and sand. In fact, it is possible to stack up to a substantially vertical end state. Therefore, in the construction method of the route by the lightweight embankment method, there is an advantage that the route distance corresponding to the full length of the boom of the heavy equipment can be used as the effective work area.

After stacking the lightweight embankment material, an appropriate load dispersing process is performed thereon. The load dispersing work is intended to prevent the deformation and destruction of the lightweight embankment due to the load, even if heavy work equipment is loaded on the piled lightweight embankment. It may be a work of laying down concretely, a forming process of a concrete floor slab, which is an essential step in a normal lightweight embankment method, and a forming process of a roadbed thereon. What is necessary is just to select and perform an appropriate load distribution processing work in consideration of the work environment, work efficiency, and the like at the construction site of a new route to be actually performed.

By performing the load distribution process, the area becomes a new forward base which is continuous with the first base and which is safe even when heavy equipment is loaded. Thus, the heavy equipment and other necessary materials used to construct the new forward base are moved from the first base to the new forward base. After moving, make the new base there and carry out the same work as the previous time using heavy equipment. Thereby, a second new forward base that is continuous with the first new forward base is established. Hereinafter, the same operation is repeated over a required route length.

[0013] As described above, according to the new route construction method using the lightweight embankment method according to the present invention, it is possible to close an existing road without constructing a special temporary scaffold for heavy equipment. In addition, even if it is closed, it is possible to continuously build a new route in a very short period of time, and it is possible to shorten the construction period and greatly reduce the cost required for the construction.

Further, in the conventional lightweight embankment method, a lightweight embankment material is piled up to form an embankment portion having a predetermined height, and then concrete is poured into a predetermined thickness on the entire surface of the piled lightweight embankment material to form a concrete floor. The slab is formed, and then the lining concrete is made on the valley side of the concrete slab.
The work for finishing roadbed and asphalt etc. is done like usual civil engineering work. At that time, due to the effect of the load generated by finishing work such as roadbed and asphalt,
Settlement occurs due to the familiarity of the lightweight embankment material, and for that reason it is necessary to reinforce the ground covering concrete or asphalt after completion. However, when the construction method according to the present invention is adopted, in the process of construction, the embankment portion receives a load of a roadbed or a repeated load by a heavy machine, so that each lightweight embankment material becomes familiar with the process and sinks. Progresses well. For this reason, there is also an effect that it is not necessary to perform additional beating of ground covering concrete or asphalt after completion.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view illustrating an embodiment in which a new route construction method using the lightweight embankment method according to the present invention is applied to widening work of an existing route, and FIG. FIG. 3 is a front view as seen from the direction in which the route extends. As shown in the figure, the existing road 1 is provided so as to cut a part of the slope of the mountain A horizontally, and by the construction method according to the present invention,
Work is underway to widen the road 1 to the valley side.

As shown in FIG. 1, first, the existing ground near the starting point of the existing road 1 to be widened is cut off to create the first starting base 10. This operation can be completed easily and in a short time by temporarily closing the existing road 1 and bringing heavy equipment there. Of course, if there is another suitable stable ground, it may be used.
Further, the first starting base 10 is not limited to the starting point, and may be any place in the construction section where the widening work is performed.

A heavy machine 21 for work is brought into the first starting base 10 that has been built, and while the support ground 3 on the valley slope is being maintained by the heavy machine 21, the required number of H-beams 2
Build. In this example, as shown in FIG. 2, six H-section steels 2a to 2f are built in as a first unit in relation to a heavy working machine to be used. H-shaped steel 2a built
2f and the inclined surface of the support ground 3, the first
The EPS blocks 4A of the units are stacked to make the upper surface flat. As described above, the EPS block is self-supporting, and the stacking surface in the work advance direction is set to the frontmost H
A substantially vertical surface can be formed in accordance with the position of the section steel 2f, and the entire length of the boom 22 of the heavy equipment 21 can be set as an effective working area. In the case of FIG. 2, the EPS blocks 4 are stacked not in a vertical plane but in a stepwise manner. This is because no border is formed at the joint with the EPS block 4B of the next unit.

During the stacking of the EPS block 4A,
If necessary, operations such as formation of the intermediate concrete slab 31 and burying and fixing of the anchor 32 for fixing the intermediate concrete slab 31 to the existing ground are also performed (see FIG. 3).
After stacking the EPS blocks 4A up to a predetermined height, concrete is poured over the entire upper surface thereof to form a concrete floor slab 5.
To form Similar to the case of the intermediate concrete slab 31, the work of burying and fixing the anchor 6 to the support ground 3 is also performed in parallel, and the tip of the anchor 6 is fixed to the anchor head 5a integrally formed with the concrete slab 5. Thereby, the concrete floor slab 5 and the EPS block 4A are integrally fixed to the support ground 3, and peeling or the like does not occur. Further, a roadbed 9 is formed on the concrete slab 5. The concrete slab 5 and the subgrade 9 are made to have the same functions as those in the case of constructing a route using the conventional lightweight embankment method. In this embodiment, the concrete slab 5 and the subgrade 9 are , And heavy equipment 21
Is distributed to protect the stacked EPS blocks 4A from deformation and destruction.

After the work of forming the concrete floor slab 5 and the subbase 9 in the first unit is completed, the heavy equipment 21 at the transmitting base 10 is moved onto the subbase 9 in the first unit area, which is a newly formed forward base. . Therefore, as in the first unit, maintenance of the support ground 3 on the valley side slope, installation of the six H-section steels 2a to 2f,
A required operation such as stacking the EPS blocks 4B for units is performed to complete the second unit area following the first unit area. After completion, the heavy equipment 21 in the first unit area is moved to the newly formed forward base on the roadbed 9 in the second unit area, and the heavy equipment 21 that has moved is used to continue the second heavy equipment 21 in the second unit area. A similar operation is performed to form a three-unit area (FIG. 2 shows the operation state). Hereinafter, by repeating the same operation procedure over the required route length, the operation up to the formation of the roadbed in the entire widened route length is completed. Thereafter or in parallel with the work in each unit area, additional finishing works such as asphalt pavement are performed, thereby completing the road widening work.

In the above-described EPS method, as described above, the EPS blocks 4 each having a thickness of 1 m ³ are stacked to form an embankment portion having a predetermined height, and thereafter, a predetermined thickness is formed on the entire surface of the stacked EPS blocks 4. Then put concrete in it,
The concrete slab 5 is formed. Then, ground covering concrete 8 is made on the valley side of the concrete floor slab 5, and the work for finishing the subbase 9 and asphalt 10 is performed as in the case of ordinary civil engineering work. , And it was necessary to re-strike the ground covering concrete 8 or asphalt 10 after completion. However, when the construction method according to the present invention is adopted, the embankment portion receives the load of the roadbed 9 or the repeated load of the heavy equipment 21 at the time of construction,
In the process, each block becomes familiar and subsidence proceeds sufficiently. For this reason, there is also an effect that it is not necessary to additionally beat the ground covering concrete 8 or the asphalt 10 after completion.

In the above-described embodiment, the widening work is performed with the H-section steel 2 erected on the valley side. However, foam resin blocks (for example, EPS blocks) are provided between the concrete floors. As described above, it has the required frictional resistance with the plate, and since it is sufficiently self-supporting, it is also possible to carry out the stacking of the foamed resin block without embedding an H-section steel. is there. In this case, mortar or the like is sprayed on the side surface of the foamed resin block in order to obtain weather resistance.

[0022]

As described above, in the new route construction method using the lightweight embankment method according to the present invention, the construction work in the middle of the main construction work without separately constructing a temporary scaffold for the heavy equipment for work. While using the site as a scaffold for heavy machinery,
Since the work is advanced in the direction of the route, the construction period can be greatly reduced, and the work of additionally adding ground lining concrete or asphalt after completion can be omitted. Thus, the cost required for construction can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is a plan view illustrating an embodiment in which a new route construction method using the lightweight embankment method according to the present invention is adopted for widening work of an existing route.

FIG. 2 is a side view showing a part of the widening construction site shown in FIG.

FIG. 3 is a front view of the widening construction site shown in FIG. 1 as viewed from a line extending direction.

FIG. 4 is a front view of a widening construction site using a conventional lightweight embankment method as viewed from a line extending direction.

[Explanation of symbols]

2 ... H-section steel, 3 ... Support ground, 4 ... Resin foam as lightweight embankment material, 5 concrete floor slab, 6 ... Anchor, 9 ... Rodbed as an example of load distribution processing work, 10 ... First base,
21: heavy equipment for work, 22: boom

Claims (5)

[Claims] When constructing a new route using a lightweight embankment method, an existing ground or an existing building is placed at least as a first base, and heavy equipment is arranged there, and at least a new route is constructed using the heavy equipment. Construction of the lightweight embankment material and the appropriate load distribution process on it are carried out, constructing a new forward base connected to the first base, and then moving heavy equipment to the newly constructed forward base The construction of a new line using the lightweight embankment method, characterized by at least including the work procedure of repeating the same work and building a new continuous base there over the required line length Method. 2. The method for constructing a new route using the lightweight embankment method according to claim 1, wherein the construction of the new route is a widening work of an existing route. 3. A new route using a lightweight embankment method according to claim 1 or 2, wherein the load distribution processing applied to the piled lightweight embankment material includes at least a concrete floor slab formation processing. How to build. 4. The construction of a new route using the lightweight embankment method according to claim 1 or 2, wherein the load distribution processing applied to the piled lightweight embankment material is a process of laying a temporary iron plate. Method. 5. The method for constructing a new route using the lightweight embankment method according to claim 1, wherein the lightweight embankment material is a foamed resin block, preferably a foamed polystyrene block.