JPH0542108Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a joining structure between water-blocking mats, which is formed by adhering a cushioning material to the top surface of a water-blocking sheet having irregularities formed on the bottom surface.

[Prior art] When the water level of rivers, seawater, etc. rises, if this water permeates into embankments such as river banks and coasts, it will cause the embankments to burst. Water shielding material is laid between the concrete and the soil surface of the embankment.

If a water stop sheet such as a vinyl chloride sheet is used alone as this water stop material, this water stop sheet will
They break when they are sandwiched between blocks or concrete and protrusions such as stones on the soil surface, and water infiltrates into the embankment through these breaks. Therefore, recently, a water-blocking mat made by adhering a cushioning material such as a non-woven fabric to the upper surface of a water-blocking sheet is often used as a water-blocking material.

This water-blocking pine has the lower surface of the water-blocking sheet in contact with the soil surface of the embankment, and the top surface of the buffer material in contact with the stretched block or poured concrete. This is to prevent tearing. However, if the lower surface of the water-stop sheet is smooth, the water-stop mat may slip from the soil surface and move downward.

Therefore, recently, in order to prevent the water-blocking mat from slipping, a water-blocking mat 10 has been proposed in which the bottom surface 14 of the water-blocking sheet 12 is provided with irregularities, as shown in FIG.

To lay the water-blocking pine 10 on the slope of the embankment,
A concrete frame having a rectangular recess is formed on the slope, and water-shielding mats 10 are laid out in the recess in a flat manner. In this case, usually water-blocking pine 1
Since the size of the recess is smaller than that of the recess, the waterproof mat 10 must be joined in the vertical or horizontal direction.

The conventional joint structure of this water-shielding mat 10 has a fifth
As shown in the figure, the water-stop sheet 12 of one water-shielding mat 10A at the joint is extended toward the other water-shielding mat 10B to form a joint, and the upper surface 13 of this joint and the other water-shielding This is to adhere the lower surface 14 of the water stop sheet 12 of the water mat 10B.

[Problem to be solved by the invention] However, as described above, since the bottom surface 14 of the water stop sheet 12 is uneven, the top surface 13 of one water stop sheet 12 and the other water stop sheet at the joint location are A gap is formed between the lower surface 14 of the bank 12 and seawater or river water penetrates into the embankment through this gap.

As described above, in view of the fact that the conventional water-blocking pine joint structure does not have a sufficient water-blocking effect, an object of the present invention is to provide a water-blocking pine joint structure that has an excellent water-blocking effect.

[Means for Solving the Problems] The joining structure of water-blocking mats according to the present invention is to butt together water-blocking mats made by bonding a cushioning material to the top surface of a water-blocking sheet with unevenness formed on the bottom surface, and Extend the edges of each water-stopping sheet toward the waterproof pine to be joined, and form a smooth upper surface to form a joint, and above these joints,
A joining mat made of a cushioning material adhered to the upper surface of a water stop sheet having a smooth lower surface is arranged, and the upper surface of the joining portion and the lower surface of the joining mat are adhered.

[Function] The joining structure of the water-blocking pine according to the present invention is such that the edges of each water-blocking sheet are extended to each other at the point where the water-blocking pine is abutted against each other, and the upper surface thereof is formed to be smooth to form a joint, Since the smooth upper surface of this joint is bonded to the smooth lower surface of the water-stop sheet of the joint mat, no gap is created between the joint of the water-shield pine and the water-stop sheet of the joint mat.

[Example] Hereinafter, an example of the present invention will be described based on FIGS. 1 to 3.

The water-shielding mat 10 is vertically long, for example, 10 m long and 2 m wide.
The waterproof sheet 12 has a rectangular shape of m in size, and a cushioning material 20 is adhered to the smooth upper surface 13 of the waterproof sheet 12.

Although the material and thickness of the water stop sheet 12 are not particularly limited, it is preferable to use a sheet that can reliably stop water and exhibit stable physical properties over a long period of time, such as a sheet made of polyvinyl chloride and having a thickness of 1 mm or more. Further, as is clear from FIG. 2, which shows the water stop sheet 12 upside down, the lower surface 14 of the water stop sheet 12 is provided with protrusions 16 having a thickness of approximately 1 mm so as to cross in a diagonal direction. A diamond-shaped recess 18 is formed between these protrusions 16.

The material and thickness of the cushioning material 20 are not particularly limited as long as it can protect the water stop sheet 12 from impact from blocks, concrete, etc., but it may be made using a needle punch method with a thickness of 10 mm and a density of 0.12 g/cm ^{2 .} It is preferable to use the above synthetic fiber nonwoven fabric.
Here, the needle punch manufacturing method involves punching randomly arranged fibers with a special needle.
The fibers are combined in the vertical, horizontal, and height directions to create a three-dimensional structure, and the nonwoven fabric made using this method has superior compression resistance and elastic absorption compared to nonwoven fabrics made using other methods. Excellent buffering properties.

At the joining point A of the water-blocking pine 10, the water-blocking mats 10, 10 are abutted against each other, and the edges of the respective water-blocking sheets 12 at the abutting points are mutually extended toward the water-blocking pine 10 to be joined. Long joint portions 22, 22 are formed in the vertical direction (diagonally up and down in FIG. 1).

A longitudinally long strip-shaped joining mat 30 is arranged above the joining point A. In Figure 3,
As shown upside down, the joining mat 30 has an upper surface 3
Waterstop sheet 3 with smooth bottom surface 3 and bottom surface 34
2, and a cushioning material 36 made of the same nonwoven fabric as described above adhered to the upper surface 33 of the water stop sheet 32,
The width is slightly smaller than the total width of the joint parts 22, 22, and the length is approximately the same as the length of the waterproof mat 10 in the vertical direction.

The upper surface of the joint 22 of the water-blocking pine 10 and the bottom surface 34 of the water-blocking sheet 32 of the water-blocking pine 30 are bonded together with a water-resistant adhesive. The upper surface of the material 20 and the surface of the cushioning material 36 of the adhesive mat 30 are substantially the same.

Hereinafter, an example of installing the water-shielding mat 10 will be explained based on FIG. 4. Although the sizes of the concrete frame 40 and the water-shielding mats 10 can be selected as appropriate, in the following, a case will be described in which four water-shielding mats 10 that are long in the vertical direction are arranged in the horizontal direction inside the horizontally long concrete frame 40. do.

After driving steel sheet piles (not shown) to prevent foundation water leakage, a concrete frame 40 is placed, and within this frame, the water-blocking pine 10 is placed with the buffer material 20 on the top and the water-stop sheet 12 on the bottom. Arrange them so that
Next, after bonding the inner wall of the lower concrete frame 40B and the lower end of the water-blocking mat 10, the inner wall of the vertical concrete frame 40C and both ends of the water-blocking mat 10 at both ends are bonded. Next, the joining mat 30 is inserted from above above the joining part 22, that is, between both cushioning materials 20.

In this case, in advance, waterproof pine 1
0 and the bottom surface 34 of the water stop sheet 32 of the mat 30. After waiting for the solvent of the adhesive to evaporate to some extent, apply the adhesive to the top surface of the joint 22 of the mat 30 and the bottom surface 34 of the water stop sheet 32 of the mat 30. 36 with a hand roller or the like. In this way, the joint 2
The upper surface of the waterproof mat 2 and the lower surface 34 of the water-blocking sheet 32 are in close contact with each other, and no gap is created between them, so that water does not penetrate through the joints of the waterproof mat.

After the water-shielding mat 10 is joined in this way, the inner wall of the upper frame concrete 40A and the upper end of the water-shielding mat 10 are bonded together.

In each of the above cases, each frame concrete 40
The edges of the water-stop sheet 12 at the locations where they are bonded to A, 40B, and 40C are extended outward, and when the extended side edges 24 are bonded to the inner wall of the concrete frame 40, the water-blocking mat 10 and the concrete frame are bonded together. The adhesion with 40 becomes stronger.

[Effects of the invention] The joint structure of the water-blocking pine according to the present invention is such that the smooth upper surface of the joint part and the smooth lower surface of the water-blocking sheet in the joint pine are bonded together, so that no gap is created between them. Therefore, seawater or river water does not penetrate into the embankment through this gap. As described above, the water-blocking pine joint structure according to the present invention has an extremely excellent water-blocking effect.

[Brief explanation of the drawing]

FIG. 1 is a partial perspective view showing an embodiment of the water-shielding pine joining structure according to the present invention, FIG. 2 is a partial perspective view of the water-shielding pine in the joining structure of FIG. 1, and FIG. Figure 1 is a partial perspective view of a jointed pine in the joint structure shown in Figure 1. Figure 4 is a perspective view of an example of laying a water-shielding pine using the joint structure shown in Figure 1. FIG. 3 is a perspective view showing the structure. Explanation of symbols, A... Joint location, 10... Water-blocking mat, 12, 32... Water-stop sheet, 13, 33...
... Upper surface of the water stop sheet, 14, 34 ... Bottom surface of the water stop sheet, 20, 36 ... Cushioning material, 22 ... Joint portion, 30 ... Joining mat.

Claims (1)

[Scope of utility model registration request] Water-shielding mats made by bonding a cushioning material to the upper surface of water-shielding sheets with irregularities formed on the lower surface are butted against each other, and the edge of each water-shielding sheet at this butted point is extended toward the water-shielding mat to be joined. The top surfaces of the joints are formed to be smooth, and above these joints, a joining mat made by adhering a cushioning material to the top surface of a water stop sheet having a smooth bottom surface is arranged, and the top surface of the joints is A joint structure for water-blocking pine, characterized in that the joint structure is formed by bonding the bottom surface of the joint pine and the bottom surface of the joint pine.