JPH057730U - Water-permeable soil retaining plate - Google Patents

Abstract

(57) [Summary] A water retaining plate made of galvanized steel sheet with a large number of water passage holes and a narrow strip having a wavy bent cross section. [Purpose] An object of the present invention is to provide a water-permeable soil retaining plate that has high strength, is lightweight, and is resistant to rust.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  This invention relates to a water retaining plate.

[0002]

[Prior art and problems]

  Conventionally, steel sheet piles and pine sheet piles have been used as soil retaining materials. Water permeability required If you are using a wire mesh or plastic net with a non-woven fabric It has been commonly used. When strength is required, it consists of a thick plate of about 5 mm In many cases, non-woven fabric was attached to expanded metal.

[0003]   When wire mesh or plastic net is used as a reinforcing material, sufficient strength is obtained. Since it is not there, it will be impregnated when soil pressure is applied and the appearance is not good. When using tar as a reinforcing material, it has good strength but is heavy and rusts. there were. Also, it is very difficult to paint or plate the expanded metal to prevent it from rusting. Since the mold is heavy, it has a drawback that it becomes very expensive.

[0004]

[Problems to be solved by the device]

  The present invention aims to provide a water-permeable soil retaining plate that is strong, lightweight, and resistant to rust. It has been the target.

[0005]

[Means for solving problems]

  In order to solve these problems, this invention proposes a zinc mesh with a large number of water holes. The steel plate is bent in a wave shape to form a relatively thin strip-shaped soil retaining plate.

[0006]   It is very expensive to plate a large molded product, and it is not practical in terms of economy. Yes. Plating at the stage of plate before forming requires blast furnace manufacturer to install large-scale equipment. The plating process is relatively inexpensive because it is produced in large quantities.   Bending strength is required to use it as an earth retaining plate, but it is widely used with galvanized steel. It is possible to form a corrugated board with a width using a press or roll forming machine. is there. However, it is very difficult to add a large number of water passage holes. After molding When opening a water hole, a very large press machine and large mold are required. I have no money.

[0007]   Also, if the holes are formed after being formed into a corrugated shape, the holes are almost necessarily opened at the apex of the corrugated shape. The strength of the corrugation will be significantly reduced, so if possible, make a hole at the top of the corrugation. It is desirable not to open. The best way is to roll the galvanized steel sheet If a hole is made with a press machine and then roll forming is performed, the hole will be opened on the corrugated slope. It is possible to kick. Such a so-called pre-notch roll forming method is used. Although it is theoretically possible to form it by using it, there is currently no machine for processing wide steel materials. Not in.   This invention uses a roll-shaped galvanized steel sheet supplied by a blast furnace maker. And a large molded product using a relatively narrow corrugated strip that can be economically produced. It has the same effect as.

[0008]

[Action]

  Since the present invention is configured as described above, it is lightweight, has high strength, and is It is possible to provide a water-permeable soil retaining plate that has been rust-treated.

[0009]

[Example 1]   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.   Pre-notch roll forming using 1.6mm thick galvanized steel sheet As a result of molding, it has two wavy cross sections with a width of 10 cm and a height of 3 cm, as shown in Fig. 1. First, the water-permeable soil retaining plate 1 made of a strip having a length of 1 m is formed. On each slope 11 of the corrugation Water passage holes 12 having a diameter of 5 mm are provided in a staggered manner in two rows at intervals of 5 cm. Water flow to the top of the waveform It is advisable to make holes on the slopes, as the holes will reduce the strength most.

[0010]   To use this water-permeable soil retaining plate, make it from a galvanized steel plate as shown in Fig. 2. Prepare a long holding frame member 2 made of lip-shaped grooved steel and open it with a gap of 1 m. The parts 21 are erected so as to face each other.   Between the two sandwiching frame members 2 described above, a large number of strip-shaped water retaining plates are horizontally attached. The soil retaining wall 3 which is water permeable is formed by sequentially dropping it.   The retaining wall may be formed by directly driving the permeable retaining plate to the ground. Of course.

[0011]

[Other cases]

  The width of the water permeable soil retaining plate 1 is wide so that pre-notch roll forming can be economically used. Since this is used, it is usually 5 to 30 cm. The height of the corrugations depends on the required strength , 2 to 5 cm. The cross-sectional shape is usually repeated with the same waveform, It is not specified.

[0012]

[Effect of device]

  Since the present invention is configured in this way, it has the following features. (1) Since the water-permeable soil retaining plate is plated, there is no risk of rust. (2) The water-permeable soil retaining plate is formed of a thin plate, but has a high corrugation, and therefore has high strength. (3) A large number of water holes are provided to allow water to pass through. By using the water holes, the water holes can reduce the strength of the slope of the belt-like soil retaining plate, You should avoid the places where you drop it. (4) Light weight makes it easy to transport and ideal for places with poor transport conditions such as in the mountains Is. (5) Since it is a shape that can be stacked, it is easy to handle cargo such as transportation and storage. (6) It is inexpensive because it is an economical mass-produced product. (7) Since long products can be produced, it is possible to widen the spacing between support piles. . (8) Since the narrow width is continuous, it is possible to construct the retaining wall of any width.

[Brief description of drawings]

FIG. 1 is a perspective view of a water permeable soil retaining plate.

FIG. 2 is an explanatory diagram of a usage state of a water permeable soil retaining plate.

Claims (3)

[Scope of utility model registration request] 1. A water-permeable soil retaining plate, which is made of a galvanized steel sheet, has a wavy bent cross section, and is made of a narrow strip having a large number of water passage holes. 2. The water-permeable soil retaining plate according to claim 1, wherein the water-permeable holes provided in the strip are provided at locations other than the apex of the corrugations. 3. The strip-shaped body is formed by pre-notch roll forming, which is provided with water passage holes at predetermined positions in a flat plate state, and then formed into a cross-sectional shape. Water-permeable soil retaining plate as described.