JP2832151B2 - Seawall structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a revetment structure, and more particularly to a revetment structure installed around a river or a reservoir where water having a property of corroding concrete such as acidic water or contaminated water flows or is stored. About.

[0002]

2. Description of the Related Art In order to protect the ground around river banks, running water channels, reservoirs, etc. and to prevent scouring due to currents and waves, a protection structure called a seawall is constructed on the slope. Will be installed. Such revetments are generally constructed by casting or spraying concrete or laying concrete blocks, but the water flowing through rivers or the like or the water stored in reservoirs is affected by acidic water or contaminated water. In the case where the concrete has the property of corroding concrete, for example, in order to prevent corrosion due to these, conventionally, for example, after constructing a revetment with concrete, a method of covering the concrete surface with tiles, and driving in steel material After the revetment is constructed, a method of covering the surface of the steel material with a corrosion-resistant paint, tile, sheet, or the like has been adopted.

[0003]

However, according to the above-mentioned conventional revetment structure provided to prevent corrosion of the revetment by acidic water or the like, after the revetment is constructed, the revetment is covered with paint, tiles, sheets and the like. In the method, there is a problem that the construction is troublesome and the construction cost is high. In addition, there is a problem that an advanced construction technique and a lot of labor are required to finish the beautiful scenery.

Accordingly, the present invention has been made in view of these problems, and is excellent in corrosion resistance to water having a property of corroding concrete such as acidic water.
It is an object of the present invention to provide a seawall structure capable of easily and economically installing a seawall with a beautiful appearance.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above-mentioned object, and its gist is a seawall structure which is installed around a river bank, a running water channel, a reservoir, etc. to constitute a seawall. And a sheet member laid on the slope of the revetment,
A grid-like holding frame placed on the upper surface of the sheet member, and an anchor member that is driven into the sloped ground from the holding frame to prevent the holding frame and the sheet member from floating.
A revetment structure comprising a self-hardening material, such as concrete or mortar, poured and poured between the sheet member and the ground on a slope.

The sheet member used in the present invention has a high corrosion resistance to acidic water and contaminated water. For example, the sheet member is made of synthetic resin or rubber which is laid as a water shield on the bottom of a waste disposal site. A water-blocking sheet can be used, and preferably, a sheet member made of high-density polyethylene, polypropylene, vinyl chloride, or the like having a certain degree of rigidity can be used.

In the revetment structure of the present invention, it is preferable to use, as the sheet member, a sheet member provided with a large number of projections on its back surface for increasing the adhesive strength with the self-hardening material.

[0008]

In order to install the revetment structure of the present invention, for example,
An anchor member is driven into the revetment ground to fix the anchor member to the ground, and a holding frame and a sheet member are fixed to the anchor member at a position separated from the ground by a predetermined thickness. In other words, by this, a space for injecting a self-hardening material such as concrete or mortar between the ground and the sheet member is easily formed between the ground and the sheet member by using the sheet member and the holding frame as a formwork. By injecting and casting a self-hardening material, a seawall structure made of a self-hardening material such as concrete, which is covered with a sheet member and has high corrosion resistance, can be easily installed. In addition, due to the injection pressure of the self-hardening material, the part of the sheet member that is not in contact with the presser frame is extruded outward, so that the surface of the revetment structure has a landscape-like uneven pattern that conforms to the shape of the presser frame. Put out.

In the revetment structure according to the present invention, if the sheet member is provided with a large number of projections on the back surface thereof, these projections penetrate into the injection-poured and self-hardening material, and the self-hardening material is formed. By increasing the adhesion strength of the sheet member, the sheet member and the self-hardening material can be more firmly integrated.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a revetment structure according to an embodiment of the present invention. A revetment structure 10 according to this embodiment constitutes a revetment 2 of a flowing water channel 1 through which acid water flows down, and as shown in FIG. 1, a sheet member 3 laid on a slope of the revetment 2 and a sheet member A grid-shaped holding frame 4 placed on the upper surface, an anchor member 5 for fixing the holding frame 4 to a slope, and a concrete as a self-hardening material poured between the ground on the slope and the sheet member 3. And 6.

The sheet member 3 is made of a high-density polyethylene, polypropylene, vinyl chloride, etc. synthetic resin having a certain degree of rigidity and excellent corrosion resistance to acidic water, contaminated water, etc., in the form of a sheet having a thickness of about 2 to 10 mm. For example, an end portion of a sheet piece having a predetermined size suitable for transportation is welded on site to be integrally laid over the slope. The sheet member 3 is provided with an anchor hole at a position corresponding to an intersection of a holding frame 4 to be described later for projecting a tip of the anchor member 5.

The back surface of this sheet member 3 is
As shown in the figure, a large number of projections 3b are formed in a staggered manner. The projection 3b has a shape in which a pair of projecting pieces 31a, 31a inclined in directions away from each other are connected by an intermediate connecting piece 32a.
Various shapes, such as a letter shape, an arrow shape, a mushroom shape, etc., which do not fall out of the surface of concrete cast between the sheet member 3 and the sloped ground due to the widened tip, can be adopted. Alternatively, rib-shaped continuous protrusions may be formed in parallel at predetermined intervals.

Further, as shown in FIG.
RP board, anti-corrosion coated steel sheet, steel material, small width plate-like body such as aluminum, pipes, etc. are arranged vertically and horizontally, and a frame member connected in a lattice shape, a size suitable for transportation, Each of them is laid on the sheet member 3, the ends are connected to each other, and the sheet member 3 is placed on the sheet member 3. Note that, similarly to the sheet member 3 described above, an anchor hole for projecting the anchor member 5 is also formed in the holding frame 4 at the intersection of the lattice.

On the other hand, as the anchor member 5, for example, an FRP rod having a high anticorrosion property or a steel rod or the like having only a tip portion protruding from a slope made of FRP can be used. There is provided a screw thread for screwing a nut or other plate or the like for fixing the sheet member 4 or the sheet member.

The anchor member 5 is provided with the lattice-shaped holding frame 4 on the sloped ground on which the revetment 2 is provided, for example, by a human power using a hammer or the like or by using a driving device. It is driven into the position corresponding to the intersection part in the state where it protruded from the ground concerned by the predetermined length.

After the operation of placing the anchor member 5 has been completed, the tip of the anchor member 5 is next attached to FIG.
As shown in (a) and (b), the holding frame 4 and the sheet member 3 are fixed at a predetermined thickness from the ground on the slope.

That is, in order to fix the holding frame 4 and the sheet member 3 to the anchor member 5, first, the sheet member 3 is
The tip of the anchor member 5 driven into the ground is laid while being inserted into the anchor hole. At this time, the tip of the anchor member 5 is made to protrude from the upper surface of the sheet member 3 and is supported from below by a support nut 5a screwed with a screw thread of the anchor member 5, and the screwing position of the support nut 5a is adjusted. By doing so, the thickness of the concrete 6 pouring space is adjusted.

Next, the holding frame 4 is provided on the upper surface of the sheet member 3.
Is installed while inserting the distal end of the anchor member 5 into the anchor hole of the holding frame 4, a rivet-like holding nut 5 b is attached, and the sheet member 3 and the holding frame 4 are connected by the support nut 5 a and the nut 5 b. Hold it from the front and back,
The work of attaching the sheet member 3 and the holding frame 4 is completed.

The pressing frame 4 and the sheet member 3
Of the concrete member 6 can be easily formed between the holding frame 4 and the sheet member 3 as a substitute for the formwork and the ground on the slope by the work of attaching to the anchor member 5.

Then, the concrete 6 is poured and poured into the concrete pouring space formed by fixing the holding frame 4 and the sheet member 3 to the anchor member 5, so that the revetment structure 10 of this embodiment is provided. Installation is completed. That is, while the presser frame 4 and the sheet member 3 are prevented from floating by the injection pressure of the concrete 6 by the anchor member 5, the concrete 6 is filled in the pouring space and is in direct contact with the presser frame 4. In the state where the concrete 6 is solidified, the surface is covered with the sheet member 3 and the surface of the sheet member 3 is extruded by the injection pressure. The revetment structure 10 having the structure is easily constructed and installed.

Further, since the sheet member 3 has a large number of projections 3b on its back surface, these projections 3b bite into the hardened concrete 6 to increase the bonding strength between the sheet member 3 and the concrete 6. Thereby, these are firmly integrated to prevent the sheet member 3 from peeling off from the concrete 6.

According to the revetment structure 10 installed in this way, since the surface of the concrete 6 is covered with the sheet member 3 having excellent corrosion resistance, corrosion of the revetment due to acidic water or the like is easily prevented. In addition, the flow of water becomes smoother, and an excellent landscape is exhibited by the uneven pattern that appears on the surface.

In this embodiment, the case where the seawall structure of the present invention is employed in the flowing water channel 1 through which the acidic water flows down has been described. However, the seawall structure of the present invention is not limited to such an embodiment. In addition, it can be adopted as a revetment structure for various river banks, running water channels, reservoirs, and the like.

In this embodiment, a grid-shaped holding frame made of a square grid is used. However, various other grid shapes such as a rectangular shape, a triangular shape, a hexagonal shape, and a circular shape may be used. It is also possible to use a holding frame provided.

[0025]

As described above in detail, according to the revetment structure according to the present invention, after the sheet member and the holding frame are fixed to the anchor member, the self-hardening material is injected between the sheet member and the ground. With this arrangement, a seawall structure that is covered by the sheet member and has excellent corrosion resistance to acidic water and contaminated water can be installed easily and at low cost. Seawall structures can be easily provided.

When the sheet member has a large number of projections on its back surface, the self-hardening material and the adhesive strength can be increased, and the sheet member and the self-hardening material can be more firmly integrated. be able to.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing an embodiment of a seawall structure according to the present invention, and showing a water channel provided with a seawall structure according to the embodiment of the present invention.

FIG. 2 is a perspective view showing a sheet member used in this embodiment.

FIG. 3 is a plan view of the revetment structure shown in FIG.

4A is an enlarged sectional view taken along line AA of FIG. 2, and FIG. 4B is an enlarged sectional view showing the inside of a circle shown in FIG.

[Explanation of symbols]

 Reference Signs List 10 revetment structure 1 running water channel 2 revetment 3 sheet member 4 holding frame 5 anchor member 6 self-hardening material

──────────────────────────────────────────────────続 き Continued on the front page (72) Katsumi Otani 2-3-3 Kandaji-cho, Chiyoda-ku, Tokyo Obayashi-gumi Tokyo Head Office (72) Inventor Akira Harada 2-3-3 Kandaji-cho, Chiyoda-ku, Tokyo Stock Obayashi Corporation Tokyo Head Office (72) Inventor Hiroyuki Matsushima 2-3-3 Kandajicho, Chiyoda-ku, Tokyo Obayashi Corporation Tokyo Headquarters (72) Inventor Kenichi Hotta 2-3-3 Azuchicho, Chuo-ku, Osaka-shi, Osaka In Takiron Co., Ltd. (56) References JP-A-50-55137 (JP, A) Japanese Utility Model Laid-open No. 1-176126 (JP, U) Japanese Utility Model Application Laid-open No. 2-54221 (JP, U) (58) Fields surveyed (Int) .Cl. ⁶ , DB name) E02B 3/12 B09B 1/00 E02B 3/18 E02D 17/20

Claims (2)

(57) [Claims] 1. A revetment structure which is installed around a riverbank, a flowing water channel, a reservoir, or the like to constitute a revetment, comprising a sheet member laid on a slope of the revetment, and a grid placed on an upper surface of the sheet member. A presser frame, an anchor member that is driven into the sloped ground from the presser frame to prevent the presser frame and the sheet member from floating, and is injected and poured between the sheet member and the sloped ground. A revetment structure comprising a self-hardening material such as concrete or mortar. 2. The seawall structure according to claim 1, wherein the sheet member has a plurality of protrusions on a back surface thereof for increasing adhesion strength with the self-hardening material.