JPS6178923A - Wall face structure for reinforced earth retaining wall - Google Patents

Abstract

PURPOSE:To prevent the displacement of the wall face of a reinforced earth retaining wall in a banking by a method in which plural stages of reinforcements are connected on the back of a retaining wall and banked, and the upper part of the surface of the retaining wall is connected with the ground by struts for supporting. CONSTITUTION:A given height of wall face part 1 is erectly provided on a foundation 3 provided on the ground 2, and plural reinforcement connectors 9 are provided from below to above on the back of the wall face part 1. Strut fitting parts 5 are provided in the upper part of the surface of the part 1, and the part 1 is connected with struts 6 between a supporting part 7 and a fixing part 5 provided to the ground 2. Reinforcements 10 are orderly connected to the part 1 from the lower part of the connectors 9 on the black side, and soil is banked on the reinforcements 10. These processes are repeated to complete banking work on the back of the wall face. The displacement of the wall face of the retaining wall can thus be prevented.

Description

[Detailed Description of the Invention] [Technical Field to which the Invention Pertains] The present invention relates to a wall structure of a reinforced earth retaining wall, and more particularly, the present invention relates to a wall structure of a reinforced earth retaining wall. The present invention relates to a wall structure for a wall that simplifies construction and increases strength.

[Conventional technology and its problems]

Like earth retaining structures, which are subject to vibrations and impacts caused by traffic,
For structures that are susceptible to deterioration by ultraviolet rays or erosion by rainwater, it is desirable to use rigid materials that are resistant to deterioration and have high mechanical strength, such as concrete, reinforced concrete, and PS concrete. From this point of view, a reinforced earth construction method has been developed in which concrete panels are stacked to form a wall surface, and reinforcing materials are laid and compacted while embanking on the back of the wall surface.

In this type of reinforced earth construction method, it is necessary to compact the embankment to integrate the reinforcing material and the embankment. At this time, the compacted layer is compressed, so there is a relative displacement at the joint between the concrete panel and the reinforcing material. This causes stress concentration on the connecting portion, making it more likely to break.

In order to prevent this type of drawback, conventional methods have been to use small concrete panels and stack them to form the wall surface, and to sandwich compressible cork plates between the concrete panels, which allows them to adapt to the compression of the pile. Yeah (I was being watched.

However, this type of construction method requires compressible cork plates approximately every 1.5 m in order to respond to the compression of the embankment by 1Q7, and therefore the concrete panels also require approximately 1.5 m.
Therefore, a crane is required to assemble the concrete panels until almost all construction steps of the reinforced earth retaining wall are completed, making the construction extremely troublesome.

Furthermore, this construction method has the disadvantage that the displacement of the wall surface in response to earth pressure is extremely large, resulting in a decrease in strength.

[Purpose of the invention]

The object of the present invention is to improve the drawbacks of the prior art mentioned above, and to provide reinforcement that is easy to construct, adapts to the compression of the embankment, and that causes displacement of the wall surface and thus increases the strength of the reinforcement. The objective is to provide a wall structure for an earthen retaining wall.

[Key points of the invention]

In order to achieve the above-mentioned object, according to the present invention, there is provided a wall member that is installed upright on the ground and has a quality that is approximately equivalent to the height of a retaining wall, and a wall member that is installed upright on the ground and has a height that corresponds to the height of the retaining wall, and a wall member that is installed upright on the ground, and a It is composed of a slide-type reinforcing member and connecting member attached to the connecting member, and a reinforcing member connected to the connecting member so as to be slidable up and down, and at least the wall member is stably installed on the surface side of the wall member. The wall member is characterized by being provided with pillars to support it upright during the period.

[Embodiments of the invention]

Hereinafter, the present invention will be described in detail and specifically using the accompanying drawings.

Fig. 1 is a sectional view of the wall structure according to the present invention, Fig. 2 is a perspective view thereof, and Figs. 3 (a), (b), and (c) respectively show the connected state of the connecting member and the reinforcing member. Cut 1+
This is a diagram.

1 is a wall member having a height approximately corresponding to the height of the retaining wall, for example, 2 m or more, usually 3 to 15 m in height. When this wall member 1 is installed on the ground 2, the ground 2 is first excavated, a foundation part 3 is made on the excavated surface, and the wall member 1 is installed upright on the foundation part 3 by a crane. At this time, a support 6 for uprightly supporting the wall member 1 is applied to the front side 4 of the wall member 1 at least until the wall member 1 is stably installed. This pillar 6
For example, it can be applied to the front side 4 of the wall member 1 by connecting one end to a support post fixing member 5 attached to the upper part of the front side 4 of the wall member 1 and fixing the other end to a fulcrum member 7 on the ground 2. be exposed. In addition, in this invention, a pillar may be installed between the mutually adjacent wall surface members 1, and a wall surface may be comprised so that the wall surface member 1 may engage with this pillar. (not shown). On the back side 8 (or embankment side 8) of the wall member l described above, a plurality of sliding reinforcing material connecting members 9 are installed from the bottom to the top of the back side 8 at intervals of 1.5 m or less. A reinforcing member 19 is connected to the reinforcing member 19 so as to be slidable up and down.

For example, as shown in FIG. 3(a), the connecting member 9 fixes a pair of fixing metal fittings 11 and 12 at vertically symmetrical positions on the back side 8, and further includes a connecting rod 13 between the upper and lower fixing metal fittings 11 and 12. It is configured by fixing. In this case, the reinforcing material 10 is connected to the connecting member 9 by drilling a hole at one end of the reinforcing material IO and inserting the connecting rod 13 into this hole. 14.14.degree. is a nut for fixing the connecting rod 13 between the fixing fittings 11.12.

Furthermore, the connecting member 9 may be constructed by drilling a vertically long and elongated hole 15 at an arbitrary location in the wall member 1, as shown in FIG. 3(b). In this case, the reinforcing material IO is Pass the tip of the reinforcing material 10 (anchor bar) through the hole 15, and
The reinforcing member 10 can be slid up and down along the hole 15 freely.

Furthermore, as shown in FIG. 3(C), the connecting member 9 has a "U"-shaped or half-arc-shaped fixing metal fitting 17 at an arbitrary location on the back side 8 of the wall member 1, so that the space 18 is oriented horizontally. A plurality of such fixing fittings 17 may be fixed in positions where the spaces 18 face each other, and further, connecting rods 19 may be suspended in the spaces 18 of the fixing fittings 17 adjacent to each other. In this case, the reinforcing material 10 is connected by using a net-like notebook and wrapping it around the connecting rod 19, so that the reinforcing material 10 can freely slide up and down by the width of the space 18.

When constructing the thus constructed reinforced soil retaining wall wall surface according to the present invention, the reinforcing material 10 is first connected to the connecting member 9 from below, and the embankment is poured out and compacted on top of the reinforcing material 10. By repeating these operations, the reinforcing material 10 is eventually connected to the upper part, and the embankment is rolled up to the upper part.As a result, an embankment compaction layer 2 is formed on the back side 8 of the wall member 1.
0 is formed to constitute a reinforced earth retaining wall. In addition, pillar 6
is removed when the wall member 1 can stably stand upright after the back earth and sand have been rolled into the embankment.

In the present invention described above, since the reinforcing material 10 is connected to the connecting member 9 so as to be able to slide up and down, it adapts to the compression of the embankment and no stress concentration acts on the connecting part.
Since the wall member 1 has a height approximately equivalent to the height of the retaining wall, that is, from the bottom to the top, l!
! Since a single continuous wall material is used, it is only necessary to use a crane to install the four wall members l at the initial stage of construction, which simplifies the construction and also allows the wall members l to be deformed by earth pressure. There is no need to worry about doing so.

Furthermore, the wall member 1 is supported by the pillars 6 until it is stably installed, and is kept upright and stable from the initial stage of construction. It is stably held upright even during a series of repeated constructions, and therefore, the present invention simplifies construction from this point of view as well, making it possible to shorten the construction period.

〔Effect of the invention〕

As described above, the present invention uses a wall member having a height approximately equivalent to the metal height of the retaining wall, the reinforcing material on the back surface of this wall member is connected to be slidable up and down, and the wall member is at least stably connected. Since it was constructed so that it was supported by pillars until it was installed, construction was simplified, and it had the excellent effect of being able to adapt to the compression of the embankment, making it difficult for wall displacement to occur, and increasing its strength. It is Uchino who plays.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an example of a wall structure according to the present invention;
Figure 2 is the slope view, Figure 3 (a) - (b), (c)
are the connection R of the connection member and the reinforcing material according to the present invention, respectively.
FIG. 3 is a sectional view showing the structure. 1. Wall member, 2. Ground level, 4. Surface side, 6. Support column, 8. Back side, 9. Connecting member, 10. Reinforcement material, 2o-embankment compaction layer, A. Reinforced soil retaining. Wall surface patent applicant Reinforced Earth Ennnuring Co., Ltd. Raku 1 Raku 20 Note 3, - Niko 4 Fu CA) (c)

Claims (1)

[Claims] A wall member installed upright on the ground with a height approximately equivalent to the height of the retaining wall, a sliding reinforcement connecting member attached to the back side of this wall member, that is, the embankment side, and this connection. and a reinforcing member connected to the member so as to be slidable up and down, and on the surface side of the wall member, a support for supporting the wall member upright at least until the wall member is stably installed. A wall structure of a reinforced earth retaining wall.