JPH0827793A - Reinforced earth structure - Google Patents

Abstract

PURPOSE:To construct extremely stable reinforced earth structure easily by preventing the sinking, movement and flow out of a banking layer and the movement, etc., of a cage frame. CONSTITUTION:Each cage frame 2 installed on the tip of a banking layer 1 is composed of a front surface frame 7 constituted in nearly L shape and for constituting the front part of the cage frame 2, a rear surface frame 8 constituted in an inversed nearly L shape and for constituting the rear part of the cage frame 2 and a connection member 9 arranged between the front surface frame 7 and the rear surface frame 8 and for connecting the front surface frame 7 to the rear surface frame 8. A banking reinforcement member 4 is buried in plural layers in the banking layer 1, whose tip is connected to the cage frame 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforced earth structure constructed by retaining a wall facing a road or a site, for example.

[0002]

2. Description of the Related Art Retaining walls constructed facing roads or sites are constructed by various methods, the most common of which is cast-in-place concrete or simply reinforced cage. It is constructed by stuffing a filling material such as gravel.

However, the cast-in-place concrete not only complicates the construction work, but also has a problem that the construction period cannot be extended.

Since many temporary materials are required,
There was a problem that materials were not easy to carry and were not suitable for construction in mountainous areas.

Further, the products using a steel car or a reinforcing steel car have problems that assembly and joining of members are troublesome.

The present invention has been made to solve the above problems, and it is possible to easily construct an extremely stable reinforced soil structure by preventing the subsidence, movement and outflow of the embankment layer and the movement of the car frame. The purpose is to provide a reinforced soil structure.

[0007]

In the reinforced soil structure according to the present invention, a car frame for constructing a reinforced earth structure, which is installed at the tip of the embankment layer, is formed into a substantially L shape, and is provided in front of the car frame. A front frame that forms a rear portion, a rear frame that is configured in an inverted L-shape and that forms a rear portion of the car frame, and is installed between the front frame and the rear frame, and the front frame and the rear frame. And a connecting member for connecting the two, and a plurality of embankment reinforcing members are embedded in the embankment layer, and the tip of the embankment reinforcing member is connected to the car frame.

[0008]

【Example】

Example 1. 1 to 4 show an embodiment of a reinforced soil structure according to the present invention, in which the reference numeral 1 is an embankment layer facing a road or the like at a predetermined height, and 2 is this embankment layer 1 A car frame for constructing a reinforced soil structure (hereinafter referred to as a "car frame"), which is installed at the tip end of the car while being connected in the vertical direction and the lateral direction so as not to collapse the embankment layer 1, and 3 is the car frame 2 Filling material filled with sand, crushed stone, etc.
The embankment reinforcement member 4 is embedded in the embankment layer 1 in a plurality of layers to prevent the embankment layer 1 from sinking, moving, flowing out, and fixing each car frame 2 so as not to move to the tip of the embankment layer 1. Further, reference numerals 5 and 6 are a connecting plate and a connecting nut for connecting the vertically adjacent car frames 2 and 2, respectively.

The car frame 2 includes a front frame 7 forming the front surface of the car frame 2, a rear frame 8 forming the rear part of the car frame 2, and a connecting member 9 connecting the front frame 7 and the rear frame 8. Basket frame 2
Horizontal reinforcing member 10 and diagonal reinforcing member 11 for preventing deformation of the
It is comprised including.

The front frame 7 is composed of a horizontal portion 7a and a vertical portion 7b and is substantially L
The rear surface frame 8 is formed in a letter L shape and is formed in an inverted L shape from the horizontal portion 8a and the vertical portion 8b (see FIGS. 3 (a) and 3 (b)).

Further, the horizontal portion 7a and the vertical portion 7b of the front frame 7,
The horizontal portion 8a and the vertical portion 8b of the rear surface frame 8 are integrally formed of meshes having high rigidity such as reinforcing bar grit or lath wire mesh, and the vertical portion 7b of the front surface frame 7 is inclined toward the embankment layer 1 side. There is a predetermined slope.

The upper end of the vertical portion 7b of the front frame 7, the upper end of the vertical portion 8b of the rear frame 8, and the horizontal portion 7a of the front frame 7
Male screw parts 7c, 8c and 7d projecting right above are respectively formed at the rear end part, and a horizontally projecting joint part 8d is projectingly provided at the tip part of the horizontal part 8a of the rear surface frame 8. The portion 8d is formed with a joint hole 8e through which the male screw portion 7d can pass.

Further, a male screw portion is formed in the joint hole 8e of the joint portion 8d.
The lower end of the front frame 7 and the rear frame 8 are connected by inserting the 7d and screwing the connecting nut 6 into the male screw portion 7d.

The male screw portions 7c, 8c and 7d are the vertical portions 7b,
Separately formed male screw members are welded to the ends of the vertical portion 8b and the horizontal portion 7a, or the vertical portion 7b and the vertical portion are formed.
8b and the horizontal portion 7a are formed by directly threading the ends of the lattice reinforcing bars constituting each of them. Also, the joint part
8d is formed by welding a plate to the tip of the horizontal portion 8a.

The connecting member 9 is made of strip steel or the like, and joint portions 9a and 9b which horizontally project in a direction perpendicular to the connecting member 9 are formed at both front and rear ends thereof, and the joint portions 9a and 9a are formed.
9b is formed with a plurality of joint holes 9c and 9d through which the male screw portions 7c and 8c can respectively pass (FIG. 3 (c)).
reference).

The connecting member 9 thus formed is bridged between the upper end portion of the front frame 7 and the upper end portion of the rear frame 8, and the male screw portion 7c and the joint portion are provided in the joint hole 9c of the joint portion 9a. 9b
The male screw portions 8c are respectively inserted in the joint holes 9d of.

Further, the upper ends of the male screw portions 7c and 8c are inserted into the meshes of the front frame 7 and the rear frame 8 located on the upper side, respectively. The connecting plate 5 is attached to the upper ends of the male screw portions 7c and 8c, and the connecting nut 6 is screwed onto the connecting plate 5.

With such a structure, the front frame 7 and the rear frame 8 are connected, and at the same time, the front frames 7 and 7 and the rear frames 8 and 8 that are vertically and laterally adjacent to each other are connected.

The embankment reinforcing member 4 is formed in a rectangular panel shape from meshes having high rigidity such as reinforcing bar grit and lath wire mesh. Then, one end 4a thereof is penetrated into the mesh of the rear surface frame 8 of the car frame 2, a mounting plate 13 is attached to the penetrating portion, and a fixing nut 14 is screwed onto the mounting plate 13 to connect to the car frame 2. There is. Further, the embankment reinforcing member 4 is embedded in the embankment layer 1 in a plurality of layers.

Example 2. FIG. 5 shows another embodiment of the reinforced soil structure according to the present invention, in which a vegetation sheet 15 is attached to the inside of the front frame 7 of each car frame 2 for greening.

The other structure is substantially the same as that of the first embodiment.

[0022]

Since the reinforced soil structure according to the present invention is constructed as described above, it has the following effects.

A car frame for constructing a reinforced soil structure is configured in a substantially L shape, and a front frame that constitutes a front part of the car frame,
A rear frame that is configured in an inverted L-shape and forms a rear portion of the car frame, and a connecting member that is installed between the front frame and the rear frame and that connects the front frame and the rear frame. Since it is configured to be installed, the car frame can be easily assembled, and therefore, by installing a plurality of car frames while filling the car frame with the filling material, it is possible to easily construct a reinforcing earth structure of a required scale. There is an effect that can be built.

Further, a plurality of embankment reinforcing members are embedded in the embankment layer laid on the back of the car frame, and
Since each car frame is connected to the embankment reinforcing member, it is possible to prevent the embankment layer from sinking, moving, flowing out, moving the car frame, etc., and constructing an extremely stable reinforced soil structure.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment of a reinforced soil structure according to the present invention.

FIG. 2 is a partially enlarged cross-sectional view of the reinforced soil structure shown in FIG.

3A is a vertical sectional view of a front frame, FIG. 3B is a vertical sectional view of a rear frame, and FIG. 3C is a plan view of a connecting member.

4A is a plan view of the embankment reinforcing member, and FIG. 4B is a vertical cross-sectional view of the embankment reinforcing member.

FIG. 5 is a longitudinal sectional view of another embodiment of the reinforced soil structure according to the present invention.

[Explanation of symbols]

1 ... Embankment layer, 2 ... Car frame (car frame for constructing a reinforced soil structure), 3 ... Filling material, 4 ... Embankment reinforcing member, 5 ... Connection plate, 6 ... Connection nut, 7 ... Front frame, 8 ... Rear surface Frame, 9
... Connecting member, 10 ... Horizontal reinforcing member, 12 ... Oblique reinforcing member, 13
… Mounting plate, 14… Fixing nut, 15… Vegetation sheet.

Claims (1)

[Claims] 1. A plurality of car frames for constructing a reinforced soil structure (hereinafter referred to as "car frames") are filled with filling material at the tip of the embankment layer, and in the vertical and horizontal directions. In a reinforced earth structure constructed by being installed while being connected to each other, the car frame is configured in a substantially L shape, and a front frame forming a front portion of the car frame and an inverted substantially L shape are configured, The rear frame that constitutes the rear part of the car frame, and a connecting member that is installed between the front frame and the rear frame and that connects the front frame and the rear frame, and the embankment. A reinforced soil structure characterized by embedding a plurality of embankment reinforcing members in a layer, and connecting the tip to the car frame.