JP2004011108A - Lightweight block body and banking structure using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lightweight block body capable of improving stability and workability and a banking structure using it. <P>SOLUTION: The lightweight block body 20 is formed in a hexagonal column having a through-hole 21 in the inner part by consolidating coal ash a through-hole 21. The banking structure 10 is constructed by stacking such lightweight block bodies 20 in layers to form a honeycomb structure, and setting a wall body 30 consisting of a panel 31 in the front of the lightweight block bodies 20. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a lightweight block body and an embankment structure using the same.
[0002]
[Prior art]
When constructing an embankment structure, an EPS method using a styrofoam material as an embankment material by utilizing characteristics such as lightness, impact relaxation, and ease of processing is known. A block-shaped styrofoam material is piled up and formed according to a certain rule, and an embankment structure is constructed by covering the outer surface with earth and sand.
By the way, in a thermal power plant using coal as fuel, coal ash is generated by combustion of coal. Conventionally, this coal ash has been disposed of, but since it is becoming difficult to secure a disposal place, its disposal is a problem at present.
[0003]
[Problems to be solved by the invention]
<A> In the case of the EPS method, a polystyrene foam material used as an embankment material is expensive. In addition, since a special connecting member is required to connect the Styrofoam blocks to each other, the construction is complicated, and the construction period may be lengthened. Furthermore, since styrofoam is easy to burn, construction management is difficult.
<B> It is difficult to secure a place to dispose of coal ash, and disposal costs are increasing year by year.
[0004]
[Object of the invention]
The present invention has been made in view of the above circumstances, and has as its object to provide a lightweight block body capable of improving workability and an embankment structure using the same.
Another object of the present invention is to provide a lightweight block body and an embankment structure using the same, in which coal ash is effectively used from the viewpoint of resource recycling.
Another object of the present invention is to provide a lightweight block body that can be safely constructed and an embankment structure using the same.
The present invention achieves at least one of the above objects.
[0005]
[Means for Solving the Problems]
In order to achieve the object as described above, the lightweight block body of the present invention is a lightweight block body that is stacked hierarchically to construct an embankment structure, and the lightweight block body is made of coal ash that is a recycled material. It is characterized by being mixed and consolidated to form a polygonal column.
[0006]
Here, the polygonal column can be a hexagonal column. Further, a concave portion or a convex portion is formed on the upper surface, the bottom surface, and the side surface of the lightweight block body, so that the lightweight block body can be fitted with the adjacent lightweight block body. Further, a through hole can be provided inside.
[0007]
The embankment structure of the present invention is an embankment structure constructed by stacking lightweight blocks in a hierarchical manner, wherein a wall is installed in front of the embankment structure and formed between the back of the wall and the slope. The above-mentioned lightweight blocks are stacked in a space to be constructed.
[0008]
Here, the embankment structure may be constructed by filling the gap between the back of the lightweight block body and the slope with lightweight soil.
[0009]
Embodiment 1 of the present invention
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a perspective view of the stacked lightweight blocks, and FIG. 2 shows a cross-sectional view of the embankment structure completed by stacking the lightweight blocks.
FIG. 3 is a perspective view of a wall installed on the front surface of the embankment structure.
[0010]
<I> embankment structure 10
The embankment structure 10 is constructed by stacking the lightweight block bodies 20 hierarchically.
A wall 30 is placed on the front of the stacked lightweight blocks 20 to cover and protect the lightweight blocks 20 (see FIG. 2).
This embankment structure 10 is constructed on a cut or embanked slope to support the soil on the back and prevent collapse. Alternatively, the embankment structure 10 can be formed by stacking the lightweight block bodies 20 on a flat ground and covering the surface with earth and sand.
[0011]
<B> Lightweight block body 20
The light-weight block body 20 is formed by mixing coal ash, which is a recycled material, with cement, a binder, and a foaming agent.
The shape of the lightweight block body 20 has a polygonal column shape. The polygonal prism may be a triangular prism, a quadrangular prism, a hexagonal prism, an octagonal prism, or the like.
In this example, the lightweight block body 20 is formed as a hexagonal prism having an upper surface 22, a bottom surface 23, side surfaces 24, and both end surfaces 25. The through-hole 21 is opened in the direction of the internal axis of the hexagonal prism to reduce the weight. The through-hole 21 can be used as a wiring path for an electric wire, an optical fiber, or the like.
Note that the through holes 21 may be omitted.
Since the waste ash is mixed and consolidated to form the lightweight block body 20, it can be manufactured at low cost, and is more economical than the case of manufacturing with a conventional styrene foam material. Instead of coal ash and the like, incinerated ash obtained by incinerating heatable materials such as garbage, wood chips, and paper chips that are finally disposed of as industrial waste may be used.
Since the lightweight block body 20 is a hexagonal prism, another lightweight block body 20 can be stacked in a honeycomb shape adjacent to each of the upper surface 22, the bottom surface 23, and the side surface 24 (see FIG. 1). Since the stacked lightweight block bodies 20 have a highly rigid honeycomb structure, a connecting member for connecting the block bodies to each other as in the related art is not required.
[0012]
<C> Wall 30
The wall 30 is a protective wall installed on the front surface of the embankment structure 10 and includes a plurality of panels 31. The panel 31 is made of a precast concrete plate, a concrete plate, a steel plate, or the like.
When the panel 31 is manufactured, coal ash is used at a predetermined ratio, so that the weight of the wall 30 and the manufacturing cost can be reduced.
The panel 31 has a size of about 1 m in length and about 2 m in width. The plurality of panels 31 are connected vertically, horizontally, and are installed on the front surface of the embankment structure 10.
[0013]
The connection tool 33 is provided on the front surface 32 of the panel 31. The connection tool 33 includes, for example, protrusions 34A and 34B and bolts 36 for fastening these.
As shown in FIG. 3, projections 34A and 34B are appropriately provided on the upper and lower portions of the panel 31, a bolt hole 35 is opened in the projection 34A, and a screw hole (not shown) is provided in the projection 34B. Bolts 36 are inserted through bolt holes 35 and tightened into screw holes to connect upper and lower panels 31.
[0014]
In the case where the panels 31 are stacked and connected, although not shown, an uneven portion is formed on the connection surface so as not to be shifted from each other by the uneven fitting.
Although not shown, the side surfaces of the panel 31 are also prevented from being shifted from each other due to the fitting of the concave and convex.
[0015]
Next, a case where the embankment structure 10 is constructed by stacking the lightweight block bodies 20 will be described with reference to the drawings.
[0016]
<A> Installation of the foundation block 40 In constructing the embankment structure 10, first, the anchor 42 is press-fitted into the ground of the embankment site and the foundation block 40 is installed (see FIG. 2).
The foundation concrete 41 is constructed at the place where the lightweight block body 20 is installed. The foundation concrete 41 is formed of cast-in-place concrete or precast concrete, and is fixed to the ground with an anchor or the like as necessary.
[0017]
<B> The panels 31 are sequentially stacked on the base block 40 using a crane for setting the wall 30. The plurality of panels 31 are connected from the front surface 32 of the stacked panels 31 using the connection tool 33 to form the wall 30.
[0018]
<C> Installation of the lightweight block body 20 On the basic concrete 41, the lightweight block body 20 manufactured in a factory or the like is installed with its bottom surface 23 down.
In this case, the lightweight blocks 20 are installed in a horizontal line so that the side surfaces 24 are parallel to the installation direction of the wall 30. When the light-weight block bodies 20 are installed in a horizontal line, they are installed so that the through holes 21 are continuous.
After the first-stage lightweight block body 20 is installed, the second-stage lightweight block body 20 is placed on the first-stage lightweight block body 20 in a horizontal line in the same manner as the first-stage lightweight block body 20.
In this way, the lightweight block bodies 20 are stacked.
When the panel 31 is installed in one step, the lightweight block body 20 is installed between the rear side of the panel 31 and the slope 80, and this operation is sequentially repeated to stack the panel 31 by a predetermined number of steps to form the wall body 30. At the same time, the lightweight block body 20 may be laminated on the back side.
A gap is formed between the back side of the stacked lightweight block bodies 20 and the slope 80 (see FIG. 2).
Note that the lightweight block body 20 may be pushed into the slope 80 and installed without any gap.
[0019]
<4> Backfilling The gap between the back side of the lightweight block body 20 and the slope 80 is filled with the lightweight soil 50 and backfilled. The lightweight soil 50 is made of, for example, a fluidized embankment material having a specific gravity of 1 or less obtained by mixing coal ash, a consolidating material, a foaming agent, and water, so that it can be filled around the gap. By using fluidized embankment material using coal ash, it is lightweight, and has excellent transportability and workability on soft ground. Become.
This backfilling is performed for each first-stage construction.
[0020]
The top of the stacked lightweight block bodies 20 is backfilled with the backfill soil 60 to construct the embankment structure 10. As the backfill soil 60, for example, a coal ash mixed embankment material formed by mixing coal ash with earth and sand is used.
After that, concrete 11 is cast and asphalt roadbed 12 is laid to form a road or the like. A gutter 13 is provided on the slope side of the road, and a guardrail 14 is provided on the valley side.
[0021]
Embodiment 2 of the present invention
The lightweight block body 70 may be formed in a rectangular parallelepiped (quadratic prism), and the fitting concave portion 71 or the fitting convex portion 72 may be formed on the upper and lower stacking surfaces (see FIG. 4).
For example, a fitting concave portion 71 is formed on the upper surface of the lower lightweight block body 70, and a fitting convex portion 72 is formed on the lower surface of the upper lightweight block body 70.
When the upper lightweight block 70 is stacked on the upper surface of the lower lightweight block 70, the fitting convex portion 72 fits into the fitting concave portion 71, and the embankment structure 10 is constructed with regularity.
Also, as shown in FIG. 5, a power wiring 80, a communication wiring 81 and the like are arranged on a predetermined lightweight block 70, and manholes 82 and 83 are installed for inspection and repair.
[0022]
【The invention's effect】
According to the present invention, as described above, the following effects can be obtained.
<A> When the light-weight block body is formed as a hexagonal prism body, it can be stacked while forming a honeycomb structure having high rigidity, and an embankment structure that is stable against backside earth pressure can be constructed.
<B> When the embankment structure is constructed by stacking lightweight blocks provided with through holes, the through holes can be used as passages for wiring such as electric wires and optical fibers.
<C> Coal ash, etc., which had been difficult to treat as industrial waste, can be reused, greatly contributing to environmental issues.
<D> The lightweight block body obtained by mixing and solidifying coal ash or the like with cement is hard to burn and can be safely constructed.
<E> Since the coal ash is mixed and consolidated to form a lightweight block body, it can be constructed economically and economically as compared with the case where the embankment structure is constructed with a conventional polystyrene foam material.
[Brief description of the drawings]
FIG. 1 is a perspective view showing stacked lightweight block bodies according to the present invention.
FIG. 2 is a cross-sectional view of an embankment structure completed by stacking lightweight block bodies.
FIG. 3 is a perspective view of a wall.
FIG. 4 is a sectional view showing another example of the present invention.
FIG. 5 is a view showing another example of the present invention, in which (A) is a longitudinal sectional view. (B) is a plan view partially sectioned.
[Explanation of symbols]
10 Embankment structure 20 Lightweight block 21 Through hole 22 Top surface 23 Bottom surface 24 Side surface 30 Wall 31 Precast concrete plate 32 ..Connecting device 50 ... backfill soil 70 ... light weight block body 71 ... fitting concave portion 72 ... fitting convex portion

Claims (6)

A lightweight block body that is built up hierarchically to build an embankment structure,
The lightweight block body is formed by mixing and solidifying coal ash as a recycled material to form a polygonal column,
Lightweight block body. The lightweight block according to claim 1,
A lightweight block body, characterized in that a polygonal pillar body is a hexagonal pillar body. In the lightweight block body according to claim 1 or 2,
A lightweight block body, characterized in that concave parts or convex parts are formed on the upper surface, bottom surface and side surfaces of the lightweight block body so that the lightweight block body can be fitted with an adjacent lightweight block body. The lightweight block according to any one of claims 1 to 3,
A lightweight block body characterized by having a through hole inside. The lightweight block according to any one of claims 1 to 4, wherein coal ash is consolidated with cement. An embankment structure constructed by stacking lightweight block bodies hierarchically,
Install a wall in front of the embankment structure,
The lightweight block body according to any one of claims 1 to 5 is built up in a space formed between the back surface of the wall body and the slope, and constructed.
Embankment structure.

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