JP3385092B2 - Laying panels for foundations such as revetment blocks - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foundation laying panel laid as a foundation for a seawall block such as a wave-dissipating block.

[0002]

2. Description of the Related Art Conventionally, asphalt mats have been used in foundation laying panels laid as foundations for revetment blocks and the like.

To make an asphalt mat, for example,
On top of the release paper, install the asphalt mat formwork, and in the formwork, asphalt, filler, fine aggregate,
A heated asphalt mastic made of coarse aggregate is put into a bucket to construct an asphalt mat. In this case, the work is divided into two steps, and after placing the lower layer of about half of the required thickness of the asphalt mat, arrange the suspending wire, wire mesh, and the reinforcing member made of glass cloth, and place the upper layer from the top. It is made by forming it, and it is laid in front of the breakwater tip or bank protection shore by using a special hanging metal fitting, or it is laid under the wave-dissipating block.

[0004]

Asphalt mats have been used for conventional foundation laying mats, but these asphalt mats do not always play a sufficient role and part of the bearing capacity is lost. However, this causes a problem that the region is damaged due to the weight of the wave-dissipating block or the like.

The cause of this problem is that the asphalt mat is impermeable, and the sand pressure in the seabed area where the asphalt mat is laid causes the pore water pressure generated in the seabed soil when it moves due to waves or other influences. It is thought that it becomes difficult to dissipate and fluidizes, and the bearing capacity in that area disappears.

Therefore, an object of the present invention is to provide a foundation laying panel such as a revetment block which secures dissipation of pore water pressure, obtains a good supporting force over the entire area, and is easy to carry. .

[0007]

In order to achieve the above-mentioned object, the present invention has an upper and lower part having a large number of protrusions rising from the surface and a large number of through holes provided between the protrusions. Forming a pair of projection panels, between the projection panel and the projection panel facing the back side, a water-permeable fiber sheet,
A metal sheet having a large number of through holes is provided while being superposed on the water permeable fiber sheet.

In a preferred embodiment, the foundation laying panel is provided with a plurality of coupling holes along the outer peripheral edge.

[0009]

[Operation] According to such a foundation laying panel, after being assembled in a factory, it is transported to the site by a truck or the like, and at the site, the coupling holes are used to couple a plurality of foundation laying panels and then the crane is hung by a crane truck. It will be laid under the breakwater tip and under the wave-dissipating block.

After the laying is completed, even if the seabed is slightly inclined, the projections projecting downward do not bite into the seabed and move, and a reliable laid state can be obtained. Further, the protrusion protruding upward holds the wave-dissipating block and the like in a stable manner.

On the other hand, in the seabed region where the foundation laying panel is laid, the generated gap water pressure escapes upward through the through hole. At this time, the water-permeable fiber sheet dissipates only the water pressure in the gap and prevents the sand from flowing out, so that a stable bearing force can be obtained for a long period of time.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings of FIGS.

In the figure, reference numeral 1 shows a pair of upper and lower protruding panels which constitute the foundation laying panel 3.

The projection panel 1 is made of synthetic resin and has a width of about 4
m, a large number of longitudinally and laterally arranged protrusions 5 formed in a rectangular shape of about 1.8 m and rising from the surface, and a plurality of vertically and horizontally arranged between the protrusions 5 The through hole 7 and the projection 5 have a rectangular shape. In addition, coupling holes 9 are provided at predetermined intervals along the outer peripheral edge.

The material of the projection panel 1 is not limited to synthetic resin, but may be a zinc-plated copper plate, aluminum, hard rubber or the like. The shape of the protrusions 5 may be any shape such as a cylinder, a triangular prism, a cone, and a triangular pyramid, and further may be a continuous shape in a lattice pattern.

The protruding panels 1 are arranged so that their back surfaces face each other, and between the protruding panels 1 facing each other,
A water-permeable fiber sheet 11 and a metal sheet 13 that overlaps the water-permeable sheet sheet 11 are provided, and the water-permeable fiber sheet 11 and the metal sheet 13 are sandwiched from above and below. In the state
Rivet connection P is performed using the connection hole 9. In addition,
The connecting means for connecting the respective projection panels 1 may be a bolt / nut connection or an adhesive connection using an adhesive.

The water-permeable fibrous sheet 11 is formed into a sheet shape and has a filtering function, and is made of a polyester non-woven fabric, and serves as a mesh which allows water to pass but prevents sand. There is. The material in this case is not limited to polyester, and may be a polymer material, glass fiber, carbon fiber or the like.

The metal sheet 13 is a wire mesh type which is assembled in a lattice shape with a metal material having a large shaft diameter.
A large number of through holes 15 aligned laterally are provided and have a weight function.

The metal sheet 13 is of a wire mesh type, but it is also possible to use, for example, punching metal in which a large number of through holes are provided in a metal panel.

Foundation laying panel 3 thus constructed
According to the said, a plurality of foundation laying panels 3 assembled in the factory
Is transported to the site by a truck, and at the site, the foundation laying panels 3 and 3 are butted to each other as shown in FIG. 4, the fastening iron plates 19 are applied from above and below along the butted region, and the bolts 21 through which the coupling holes 9 are penetrated. , Tighten with the nut 23. In the embodiment, after fastening about five and making the length to be lifted,
The suspension ring 25 is passed through the idle coupling hole 9 as shown by the chain line in FIG. It is laid by taking it down. After the laying is completed, the work is completed by inserting a revetment block 35 such as a tetra pot from above (FIG. 7).

At this time, since the projections 5 projecting downward from the projection panel 1 bite into the seabed 33, for example, even if the seabed is an inclined surface, a reliable installation state can be obtained without moving. Further, the revetment block 35 is securely held by the protrusion 5 protruding upward.

On the other hand, the gap water pressure generated in the seabed region where the foundation laying panel 3 is laid escapes upward through the through hole 7. At this time, the water-permeable fibrous sheet 11 dissipates only the water pressure in the gap and blocks the movement of sand, so that a stable supporting force can be obtained for a long period of time.

The protruding panel 1 may have a structure in which a reinforcing member such as a wire mesh or a reinforcing bar is integrally molded inside. According to this embodiment, the strength and surface rigidity are excellent.

[0024]

As described above, according to the foundation laying block of the present invention, it can be easily transported to the site by a truck or the like. Further, since the movement of sand can be prevented and only the water pressure in the gap can be released upward, a stable supporting force can be obtained for a long period of time.

Further, the downward projections bite into the seabed and can be reliably installed and supported without being influenced by the seabed conditions such as inclination, and the upward projections ensure the protection of the revetment block. Can be held.

[Brief description of drawings]

FIG. 1 is a plan view of a foundation laying panel.

FIG. 2 is a plan view in which a part of a foundation laying panel is cut away.

FIG. 3 is a partial side view of a foundation laying panel.

FIG. 4 is an explanatory view showing a fastening state of a foundation laying panel.

FIG. 5 is an explanatory view of a state where the foundation laying panel is hoisted by a special hoisting tool.

FIG. 6 is an operation diagram of submerging the foundation laying panel on the seabed.

FIG. 7 is an explanatory view showing a work completed state.

[Explanation of symbols]

1 protrusion panel 5 protrusions 7 through holes 11 Water-permeable fiber sheet 13 Metal sheet 15 through holes

Claims (2)

(57) [Claims] 1. A projection panel in which a pair of upper and lower projection panels having a large number of projections rising from the front surface and a large number of through holes provided between the projections and the projections are formed, and the back surfaces are opposed to each other. For a revetment, a water-permeable fiber sheet and a metal sheet having a large number of through-holes are provided between the water-permeable fiber sheet and the projection panel. Laying panel for foundations such as blocks. 2. The foundation laying panel such as a revetment block according to claim 1, wherein the foundation laying panel is provided with a plurality of coupling holes along an outer peripheral edge thereof.