JPH09256370A - Composite sheathing base of reinforced banking - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate connection with a geo-grid material, and to increase strength by annexing a casing-shaped reinforcing frame along the outer circumference of the surface plate of a surface frame body having the surface plate and a bottom plate crossed in an approximately L shape as indispensable elements. SOLUTION: A surface frame body is composed of a welded wire gauze consisting of zinc-galvanized steel wires and having rigidity, the welded wire gauze is bent to that a sectional shape is formed in an L shape at an approximately center, and the internal angles of a bottom plate 11 and a surface plate 12 and formed at approximately 60 deg.. A recessed groove 23 is formed at the center of the web 22 of an approximately U-shaped sectional rod-shaped frame material 20 consisting of the zinc-galvanized steel plate, and the rod-shaped frame material 20 is assembled to a rectangular casing- shaped reinforcing frame 2 while the web 22 is directed outwards, and welded along the outer circumference of the external surface of the surface plate 12, and a composite sheathing base 1 is manufactured. Accordingly, since the casing-shaped reinforcing frame 2 is used, the surface plates of the frame bodies can be coupled mutually, and surfaces can be formed flatly and surely without a stepped section by employing connecting rods, etc., and strength is increased, and the surface of a banking does not sag.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite foundation used for reinforced embankment.

[0002]

2. Description of the Related Art A reinforcing member is laid, and a surface frame of a reinforcing embankment, which is composed of two sides of a surface plate and a bottom plate that intersect in a substantially L shape, is installed on the reinforcing member, and the embankment is formed behind it. The method of constructing a reinforced embankment is well known. If the surface frame is composed of only a mesh, it is preferable because it is familiar and economical, but it is deformed when a large force is applied, and there is a drawback that the embankment surface cannot be made flat.

Since the geogrid material is often made of combustible plastics or synthetic fibers, there is a concern that the exposed portion may burn when wound up on the front surface of the surface frame. Further, there is a problem that the plastic / synthetic fiber deteriorates with time, or stretches when an external force is constantly applied, and the surface is sagged.

[0004]

SUMMARY OF THE INVENTION The first object of the present invention is to increase the rigidity of the surface forming frame so that it can withstand a large force.

[0005]

To this end, according to the present invention, a frame body comprising a surface plate made of a rigid perforated plate and a bottom plate made of a rigid material intersecting at a predetermined angle is formed, A rectangular frame-shaped reinforcing frame made of a rod-shaped frame material having high strength is provided along the outer periphery of the outer surface of the surface plate.

[0006]

With this construction, the surface plate of the frame body, which has been conventionally used, such as a net, is reinforced by the frame-shaped reinforcing frame. By using the frame-shaped reinforcing frame, the surface plates of the frame can be connected to each other, and by using a connecting rod or the like,
The surface can be surely formed flat without any step.

[0007]

Embodiment 1 Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. The surface frame 10 is shown in FIG. The surface frame is made of a rigid welded wire mesh made of galvanized steel wire having a diameter of 3 mm. The size of the mesh is 5 cm square. Welded wire mesh with a width of 1 meter and a length of 1.2 meters is bent so that the cross-sectional shape is L-shaped at the approximate center. The formed surface frame has a width of 1 meter and a bottom plate. 11 is 50 cm and the height of the face plate 12 is 70 cm. The inner angle between the bottom plate 11 and the front plate 12 is about 60 degrees.

FIG. 2 shows a rod-shaped frame member 20. It is made of zinc-plated steel sheet with a thickness of 2 mm, its cross-section is roughly U-shaped, and the flange 21 is 3 cm wide.
The web 22 has a width of 10 cm, and a groove 23 is formed at the center of the web. The web is provided with bolt holes 24 on both edges and the groove at 20 cm intervals.

As shown in FIG. 3, such a rod-shaped frame member 2 is used.
0 is assembled into a rectangular frame-shaped reinforcing frame 2 with the web 22 facing outward, and is welded along the outer periphery of the outer surface of the face plate 12 to complete the composite foundation 1.

[0010]

[Embodiment 2] FIG. 4 shows a connector 3, which is a rectangular tube made of a zinc-plated steel plate having a thickness of 2 mm. Each side has a width of 3 cm and a length of 40 cm, and a bolt hole 24 is provided on each surface. It has enough strength as a connector, and if it can be inserted into a thin cylindrical space,
The shape is not limited, and may be a semi-cylindrical shape or a rod shape.

When the composite soil retaining bases are installed side by side, as shown in FIG. 5, the rod-shaped frame members 20 on both sides come into close contact with each other and the recessed grooves 23 are united to form the vertical cylindrical space 4. The lower half of the connecting rod is inserted into this cylindrical space and fixed with bolts and nuts. The upper half of the tubular space is inserted into the protruding remaining half of the connecting tool to connect the upper and lower composite soil bases.

[0012]

[Embodiment 3] As shown in FIG. 6, at the end portion of the geogrid material 5 made of a fiber net laid for reinforcement of the embankment,
A galvanized steel wire 6 having a diameter of 3 cm is placed, the geogrid material is folded back and installed in the groove 23. From above, the concave grooves 23 of the upper composite soil retaining frame are stacked and tightly connected by using bolts and nuts. The upper and lower concave grooves are united to form a tubular space 4 into which a galvanized steel wire 6 having a geogrid material wound therein is loaded. When constructed in this way,
The geogrid material 5 is fixed in the tubular space together with the galvanized steel wire 6, and the web 22 of the horizontal bar-shaped frame material is provided.
Since it is sandwiched between, it is firmly connected.

It is also possible to connect the composite foundation and the geogrid material by the following method. The bottom plate has 5 meshes
Although it is composed of a centimeter-sized welded wire mesh, as shown in FIG. 7, two narrow connecting meshes 13 are formed on the bottom plate 11 in a direction parallel to the surface plate. A band-shaped presser plate 14 made of welded wire mesh having a mesh of 2 cm is prepared. The end of the geogrid material 5 is folded back on the bottom plate 11 so as to be doubled, and the restraining plate 14 is placed on the bottom plate 11, and is tightened using a narrow mesh connecting strip, the geogrid material, and bolts and nuts passing through the restraining plate. The geogrid material is firmly sandwiched between the upper and lower wire nets, and is connected to the composite foundation.

[0014]

Fourth Embodiment As shown in FIG. 8, angle frame members 25 are attached to both edges of the bottom plate 11. The angle frame member 25 and the rod-shaped frame member 20 attached to the surface plate 12 are welded so as to maintain a predetermined angle. You may join using a bolt nut etc. instead of welding. A triangular haunch plate 26 may be attached to the intersection of the rod-shaped frame member and the angle frame member to reinforce each other.

By connecting the angle frame member 25 and the adjacent angle frame member by using bolts and nuts, the whole is more integrated and a strong embankment surface stand is formed. When embankment is formed on the back surface of the surface plate, the surface plate tends to be pushed by the embankment and tilt forward, but this problem can be solved by reinforcing the surface plate with an angle frame member.

As shown in FIG. 9, a steel pipe 27 having the same length as the width of the bottom plate is attached along the end portion of the bottom plate 11,
After laying the composite soil retaining base 1, the steel pipes are connected to each other by using the connecting rods fitted in the steel pipes. This way,
The stability is improved by connecting a plurality of composite soil anchors. The long material to be attached across the plurality of composite soil anchors is not limited to the steel pipe, and may be an angle material or the like.

Before mounting the steel pipe on the bottom plate of the composite retaining stand,
As shown in FIG. 10, it is also possible to wind the geogrid material 5 around the steel pipe 27 and fix the steel pipe together with the geogrid material to the bottom plate 11 by using an annular fixture 18 or the like. It is convenient to connect the composite foundation and the geogrid material at the same time.

The material of the surface frame constituting the composite foundation of the present invention is not limited to the welding wire mesh as in the embodiment, but may be expanded metal or perforated steel plate. Also, the surface plate and the bottom plate can be made of different materials. The back surface of the face plate may be lined with a sheet material having a fine mesh. Vegetative seeds may be attached to the sheet-like material so that the surface can be vegetated.

[0019]

Since the present invention is constructed as described above, it has the following effects. 1 The surface plate of the composite soil retaining base is reinforced by the frame-shaped reinforcing frame, so the strength is high and the surface of the embankment does not sag. 2 Using the cylindrical space formed between the frame-shaped reinforcement frames,
It is possible to easily and reliably connect the upper and lower pedestals to each other and the geogrid material. 3 By connecting the frame-shaped reinforcing frames to each other with a connecting rod or the like, it becomes easy to form the surface of the embankment flat, and even when a force is applied, no step is easily formed. 4 Even when constructing a composite anchorage, connecting the frame-shaped reinforcing frames with connecting rods makes it possible to easily determine the slope of the surface and is highly efficient. 5. A strong surface frame can be formed by reinforcing the bottom plate with an angle frame member or the like or by connecting them to each other. 6 Since the geogrid material does not come out from the composite foundation, there is no problem of burning or extending even if the geogrid material is made of plastic. 7 Since it is not necessary to wind the geogrid material on the surface of the surface frame, the amount used can be small and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a side view showing an example of a surface frame body.

FIG. 2 is a perspective view showing an example of a rod-shaped frame member.

FIG. 3 is a perspective view showing an example of a composite soil retaining base.

FIG. 4 is a perspective view showing an example of a connecting pipe.

FIG. 5 is a front cross-sectional view showing how a cylindrical space is formed.

FIG. 6 is a partial side cross-sectional view showing an example of a connection state of a composite soil anchor and a geogrid material.

FIG. 7 is a partial side cross-sectional view showing another example of the connection state of the composite foundation and the geogrid material.

FIG. 8 is a plan view showing an example of a composite earth retaining stand provided with an angle frame.

FIG. 9 is a plan view showing a situation in which a plurality of composite soil anchors are connected by steel pipes.

FIG. 10 is a partial side cross-sectional view showing another example of the connection state of the composite soil anchor and the geogrid material.

[Explanation of symbols]

 1 Composite Soil Stand 10 Surface Frame 11 Bottom Plate 12 Surface Plate 2 Frame Reinforcement Frame 3 Connecting Tool 4 Cylindrical Space 5 Geogrid Material 6 Galvanized Steel Wire

Claims (7)

[Claims] 1. An outer periphery of a surface plate of an earth retaining frame having a substantially L-shaped cross section, which includes a surface plate made of a perforated plate having rigidity and a bottom plate made of a rigid material intersecting at a predetermined angle as essential elements. A frame-shaped reinforcing frame was attached along the
Reinforced embankment compound retaining stand. 2. The bottom plate is formed by bending an extension of a perforated plate forming a surface plate.
The reinforced embankment composite anchorage according to claim 1. 3. The composite embankment for reinforced embankment according to claim 1, wherein the bottom plate is provided with a reinforcing material connected to the frame-shaped reinforcing frame. 4. The bottom plate is provided with a transverse reinforcing member, which is common to the bottom plates of the composite soil anchors installed in contact with each other. , Reinforced embankment compound anchorage. 5. The frame-shaped reinforcing frame is provided with a connecting mechanism for connecting to the frame-shaped reinforcing frame of the composite soil retaining base installed so as to be adjacent to each other on the left, right, top and bottom. The composite embankment base for reinforced embankment according to claim 4. 6. The frame-shaped reinforcing frame and the frame-shaped reinforcing frames installed in contact with each other in the vertical direction form a connection mechanism with a sheet-like material for embankment reinforcement. The composite embankment for reinforced embankment according to any one of claims 1 to 5. 7. The reinforced embankment according to claim 1, wherein a connection mechanism with a sheet material for embankment reinforcement is attached to the upper surface and / or the lower surface of the bottom plate. Composite dome.