JPH0733650B2 - Construction method of seawall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a method for constructing a revetment using a gabion.

<Prior Art> In river construction, it is already known to prevent scouring by arranging stone-filled gabions on slopes and river beds.

The gabion is composed of a box body with an open upper mouth and a lid body that is integrated with the box body and closes the opening, and is generally made of wire mesh with a large pitch.

<Problems to be Solved by the Present Invention> The above-mentioned conventional revetment technique has the following problems.

<a> Paving stone work is performed manually at a place different from the gabion laying site.

Moreover, the work of fixing the lid of each gabion is involved.

Therefore, it takes a great deal of work to complete the gabion, and there is a problem in workability.

<B> A crane is required to line up the gabions that are filled with stones, and the effect of introducing mechanical force cannot be fully exerted, and it takes time to lay.

<C> It is difficult to give continuity to all the gabions, because each gabion is only tied using a binding wire or a binding tool.

<Object of the Present Invention> The present invention has been made to solve the above problems, and an object thereof is to provide a revetment method with excellent workability.

<Means for Solving Problems> That is, the present invention is a revetment method of laying a stone-filled net gabion and revetment, and a bottom surface and two pieces rotatably connected to each short side of the bottom surface. The side face for the short side, the side face for the long side rotatably connected to one of the long sides of the bottom face, and the partition net rotatably connected on the bottom face for the long side. Lay them so that the side faces are in the vertical direction of the slope and the side faces for the short sides are in the horizontal direction of the slope so that there is continuity in the vertical and horizontal directions of the slope, and then laying stones in each gabion unit. Finally, a sheet-like flexible cover net that can be wound up is carried on a slope in a rolled-up state, and it is spread on each gabion unit and integrally covered. Is the construction method.

<Description of the Present Invention> The present invention will be described below with reference to the drawings. First, the gabion used in this method will be described.

<A> Gabion Figure 1 shows an example of a gabion A.

The gabion A is a rectangular bottom surface 1, a rhombic or rectangular long side surface 2 rotatably connected to one long side of the bottom surface 1, and rotatably connected to each of two facing short sides of the bottom surface 1. The side walls 3 and 3 for the short side and the partition net 4 arranged in parallel with any one side of the bottom surface 1 (in this embodiment, arranged in parallel with the short side of the bottom surface 1) and rotatably connected to the bottom surface 1. And consists of.

Each of these members 1 to 4 is manufactured by attaching a wire mesh similar to the conventional one to a frame body that does not easily deform.

Further, as the connecting means between the members 1 to 4, for example, the second
By using the coil wire 5 as shown in the drawing, the ends of the coil wire 5 can be sequentially wound between the frame bodies to be connected, or can be connected by using a known connecting tool or a binding wire.

Although FIG. 2 illustrates the case where the partition wire 4 and the bottom surface 1 are connected by the coil wire 5, the same applies to the case where the frame bodies of other members are connected.

This gabion A is manufactured in advance in a factory or the like, and assembled and used on site.

<B> Partition network The partition network 4 is a member for partitioning the inner space of the gabion A into a plurality of parts.
It has a length across the short side or the long side of the bottom surface 1.

The mounting pitch when a plurality of partition nets 4 are provided is determined according to the total length of the bottom surface 1.

<C> Lid As described above, the unit of each gabion A does not have an integral lid as in the conventional case.

In this embodiment, the strip-shaped net having a windable flexibility serves as a lid body, which can be transported and deployed on the sloped surface in a wound state to be integrally covered over the upper opening of the gabion A.

<Construction Method> Next, a construction method using the gabion A will be described.

<a> Installation of gabion (Figs. 1 and 3) On the slope 6 where the ground leveling work has been completed, the side 2 for long side is positioned in the vertical direction of the slope and the side faces 3 and 3 for short side are positioned laterally of the slope. As described above, the slope is laid with continuity in the vertical and horizontal directions, and the side surfaces 3 and 3 for the short side overlap the side surfaces 3 and 3 for the short side of the other gabion to prevent the gabion from slipping off. Meanwhile, the gabion A is assembled and sequentially installed.

That is, the side surface 2 for the long side, the side surfaces 3 and 3 for the short side, and the partition net 1 are raised three-dimensionally to connect each abutting portion, and the partition nets 4 are similarly raised to form the side surface 2 for the long side. The contact parts are connected to assemble the gabion A three-dimensionally.

At this time, in order to make the adjacent gabions A, A integral with each other, the contact portions of the gabions A, A are also connected using the coil wire 5 as shown in FIG.

Therefore, both ends of each partition net 4 are fixed by the pair of long side surfaces 2 and 2 facing each other.

In addition, one long side surface 2 is shared between the gabions A.

In addition, when installing a gabion also on the hanging part 7 and the top end part 8, a gabion B for the drooping part and a gabion C for the top part as shown in FIGS.
Set up.

These gabions B and C are different from the gabion A in that there is one side 3 for the short side and that the overall length is short.

In the configurations of the gabions B and C, the same members as those of the gabion A are given the same reference numerals and the description thereof will be omitted.

<B> Packing stones (Fig. 6) Next, the stones 9 are packed in the gabions A to C sequentially from the downstream side.

The packing stone work is performed mechanically using a machine such as a backhoe.

When deformation of the gabions A to C is expected, it is advisable to temporarily install reinforcing members such as steel pipes in the vertical and horizontal directions on the upper surfaces of the gabions A to C prior to the filling work.

<C> Assembly of lid net (Fig. 7) Each gabion A to C does not have a lid integrated with the main body unlike the conventional gabion.

Therefore, in the case of the present invention, a lid net 11 having a size capable of covering a plurality of sets of gabions A to C that have completed the filling operation is covered.

The lid net 11 is carried to the uppermost part of the sloped surface in a wound state and unfolded downward to cover the upper surfaces of the gabions A to C.

A well-known strip-shaped wire net can be used for the lid net 11.

Then, for example, the coil wire 5 of FIG. 2 is wound over the appropriate range of the contact portion between the upper edge of each set of gabions A to C and the lid net 11 to fix the lid net 11 to the gabions A to C. .

As a result, especially in the gabion A on the slope where the weight of the stone 9 is heavy, the gabion A is installed by the appropriate number of partition nets 4.
The deformation of can be effectively suppressed.

<Effects of the Present Invention> Since the present invention is as described above, the following effects can be obtained.

<a> Each gabion can share one long side surface with each other to save members.

<B> By arranging the short-side side surfaces laterally on the slope and overlapping them, the upper gabion unit can be prevented from sliding down to the lower gabion unit.

<C> Since a plurality of gabion units are arranged adjacent to each other on the front, rear, left, and right sides on the revetment, the ability to follow the slope to construct the revetment is good and the construction work can be performed quickly.

<D> A cover material that has the flexibility to be wound up can be carried on a slope in a wound state, and it can be unfolded to cover a plurality of gabion top surfaces. Can be simplified, the working time can be significantly shortened, and each gabion can be easily imparted with integrity and strength.

[Brief description of drawings]

 Fig. 1: Perspective view showing the arrangement of gabions Fig. 2: Enlarged view of the lower part of gabions Fig. 3: Explanatory drawing of gabion installation Fig. 4, 5: Gabions for hanging and crown Top view Fig. 6: Explanatory diagram for slab work Fig. 7: Explanatory diagram for installation of lid net

 ─────────────────────────────────────────────────── ───Continued from the front page (56) Bibliographic references Kaihei Hei 2-73432 (JP, U) Actual public Sho-10-2191 (JP, Y1)

Claims (1)

[Claims] 1. A revetment method for laying a stone-filled net gabion to revet a shore, a bottom surface, two short side surfaces rotatably connected to each short side of the bottom surface, and the bottom surface of the bottom surface. A gabion unit comprising a long side laterally rotatably connected to one of the long sides and a partition net rotatably connected to the bottom is arranged such that the long side laterally extends in the vertical direction of the slope. It is possible to lay it so that the side surface for the side is located in the lateral direction of the slope so that there is continuity in the vertical and horizontal directions of the slope, and then lay stones inside each gabion unit, and finally wind up in sheet form. A method of constructing a revetment, characterized in that a flexible lid net is rolled up and carried on a slope, and it is spread on each gabion unit and covered integrally.