JPS5862223A - Slope protection work - Google Patents

Abstract

PURPOSE:To easily set slope frames of uniform quality by a method in which steel pipes are set crosswise on a slope, a metal netting is provided on the periphery of the piles, and then cement mortar is sprayed onto the metal netting. CONSTITUTION:Plural vertical steel pipes 1 are set from upside to down side of a slope along the inclination of the slope, and plural cross steel pipes 2 are set in the direction of crossing the vertical steel pipes 1. The vertical and cross steel pipes are fixed to the slope by burying anchors 3 piercing these pipes in the slope. A metal netting 9 for protection and cement mortar-spraying purposes is covered on these vertical and transversal steel pipes 1 and 2, and then cement mortar is sprayed onto the periperies of these pipes 1 and 2.

Description

DETAILED DESCRIPTION OF THE INVENTION Conventional slope protection methods include mortar spraying, masonry, concrete retaining wall, slope framing, and anchoring, but each of these methods has its own drawbacks.

That is, the mortar spraying method lacks durability, and the masonry method, concrete IJ + retaining, and wall construction methods require a great deal of labor, are dangerous, and have high construction costs.・Furthermore, with the method of construction, it takes time and money to assemble the formwork, and skilled workers are required to spray mortar, etc., and the work is time-consuming.This invention was made to improve the above-mentioned drawbacks. However, the slope protection method according to the present invention belongs to the above-mentioned slope frame method, and is a method in which a slope is formed on the slope to stabilize the slope.

However, compared to the conventional method of constructing a slope, the slope is constructed using a completely new tλ method, which is easy to construct and can significantly shorten the construction period.
Furthermore, it is an object of the present invention to provide a slope protection construction method that can reduce construction costs.

Next, an example will be explained.

The slope protection method according to the present invention is characterized in that steel pipes are arranged vertically and horizontally on a slope, fixed with anchors, and used as a slope.

The vertical pipe 1 is a cylindrical steel pipe with a square cross section.

The cross-sectional shape of the vertical pipe 1 is not limited to a rectangular shape, and various shapes such as a circular shape and a semicircular shape can be adopted.

In response to the inclination of the slope, one end of the vertical pipe 1 is positioned above the slope, and the other end is positioned below the slope, so that the steel pipe 1 is inclined downward from above. Install it on the slope.

If the slope surface is extremely uneven, leveling mortar 5 may be applied on the slope surface in advance, and then the vertical pipe 1 may be installed thereon.

A plurality of vertical pipes 1 are laid in parallel on a slope as described above.

A horizontal pipe 2 is installed in a direction j intersecting this vertical pipe 1, and a hook is passed between adjacent vertical pipes 1.

The horizontal pipes 2 are also made of steel pipes, and their lengths are set in advance to be the same as the spacing between the vertical pipes 1.

A plurality of horizontal pipes 2 are appropriately separated and arranged between vertical pipes 1, and vertical pipes 1 and horizontal pipes 2 are installed vertically and horizontally on a slope to form a lattice-like structure.

The horizontal pipe 2 and the vertical pipe 1 can be connected by welding the tip of the horizontal pipe 2 to the side surface of the vertical pipe 1, or by abutting an L-shaped angle on each side surface of the horizontal pipe 2 and vertical pipe 1, and using bolts and nuts. There are methods such as tightening it by

To fix the vertical pipe 1 and the horizontal pipe 2 to the slope, anchors 3 that pass through the pipes are buried in the slope to apply tension to the pipes.

A wire mesh 9 for protecting the pipes and for spraying mortar is installed around the outer peripheries of the vertical and horizontal pipes 1 to cover the pipes 1 and 2.

The wire mesh 9 can be made of a wide variety of mesh materials such as punch metal and expanded metal.

Possible means for fixing the wire mesh 9 include fixing it to the ground using anchors, or directly fixing it to the pipes 1 and 2 by welding.

If the wire mesh 9 and the pipes 1 and 2 are integrated in advance before installing the vertical pipe 1 and the horizontal pipe 2, the work can be done quickly.

Mortar or concrete is sprayed onto the outer circumferences of the vertical pipe 1 and the horizontal pipe 2.

The mortar or concrete is fixed to the outer periphery of the pipes 1 and 2 by a wire mesh 9 to protect the pipes 1 and 2.

If the length of the vertical pipe 1 is insufficient for the slope, the vertical pipe 1 may be further connected by welding and the above operation may be performed.

In the slope protection method according to the present invention, steel pipes are arranged vertically and horizontally on a slope and used as a slope as described above.

Therefore, assembling the formwork on site, which is required in the conventional method of constructing the legal frame, is labor-saving, and the construction period can be significantly shortened.

Steel pipes are sufficiently protected from rust by sprayed mortar or concrete.

In the conventional method of assembling formwork and pouring mortar, etc., it was difficult to place mortar uniformly over the entire length of the formwork, and this could only be done by highly skilled workers. Since the steel pipes are simply placed on the slope, it is easy to construct a slope frame with uniform quality over its entire length.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the construction state of one embodiment of the slope protection method according to the present invention, and FIG. 2 is a perspective view of the construction state. 1. Vertical pipe, 2. Horizontal pipe, 3. Anchor, 9.
・Wire mesh. Patent applicant Satoshi Hisakado, agent of Free Kogyo Co., Ltd.

Claims (1)

[Claims] Vertical pipes and horizontal pipes made of steel pipes are installed vertically and horizontally on a slope, the pipes are fixed on the slope with anchors, a wire mesh is installed around the outer periphery of the pipe, and mortar or horizontal pipes are installed around the outer periphery of the pipe. A slope protection method that involves spraying concrete.