JPH045562Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to the structure of a connection part of a membrane for preventing the diffusion of pollution from seawater, etc. A membrane that prevents the diffusion of pollution from seawater, etc. is a membrane that prevents the diffusion of suspended matter caused by disturbance phenomena such as sediments that accompany the dumping of dredged soil or soil that is dumped when reclamation work is carried out in the ocean, other lakes, rivers, etc. This is a membrane material that is installed vertically between a water surface float that surrounds the seawater periphery of a reclaimed area and an anchor that is placed on the bottom of the water in order to prevent this. When the area in which this preventive film is spread becomes wider, naturally the groups of preventive films must be connected at their side edges, and areas where large loads are concentrated on the connected preventive films are is a corner connection portion of a prevention membrane, and the present invention is particularly directed to the structure of a connection reinforcement portion at a corner portion of a membrane for preventing the diffusion of contaminants such as seawater.

(Conventional technology) Specifically, when carrying out reclamation work in coastal areas,
As shown in Figure 9, a pollution diffusion prevention film (hereinafter referred to as a curtain) is placed in the seawater along the ocean side boundary line C of the reclaimed area B, which is set in the vicinity of the seawall A and where the tidal current is very gentle. ) is hung down from the seabed like a barrier, and the curtain 10 forms a barricade to prevent pollutants from flowing offshore from the reclaimed area. At this time, as shown in FIG. 10, a shallow floating float 11 was attached to the upper edge of the curtain 10 along the entire length of the curtain, and a seabed sinking anchor 15 was attached to the lower edge of the curtain. When the buried area of a group of curtains suspended in seawater expands, the side edges of each curtain 10 will naturally be connected to each other, and the length of the curtains will be extended.

When connecting and extending a curtain, the side edges of the curtain are connected through various connectors such as rings and hooks, and the curtain is extended by external forces such as wind and waves acting on the float and curtain parts. The connecting parts are placed in a state of continuous oscillation, and a large load is concentrated particularly at the upper corner of the curtain, and this part is subject to a greater degree of fatigue than other parts of the curtain.

Conventionally, the upper corner of the curtain was reinforced,
In order to facilitate the connection, metal backing plates are placed on both sides of the upper corner of the curtain, and multiple bolts are connected between the pair of metal backing plates that sandwich the curtain between the two sides. Adjacent curtains are connected to each other using appropriate connecting fittings such as rings or hooks, using windows formed in the metal backing plate.

(Problem that the invention attempts to solve) A pair of metal backing plates are placed on both sides of the curtain,
When forming the connection reinforcement part of a seawater pollution diffusion prevention membrane, this metal backing plate can certainly be expected to have a remarkable effect in reinforcing the part, but over time, the seawater will cause the backing plate to rust. As a result, the plate corrodes from its surface, and the deterioration of the plate due to corrosion can, in the worst case, lead to cracks from the window portion of the plate. In addition, the connection reinforcing part is constructed by holding a curtain from both sides with a pair of metal backing plates.Due to the rigidity of the backing plates, the curtain portion that is in constant contact with the periphery of the backing plates is prone to breakage. The negative effects of this occur relatively easily.

Further, the metal backing plate lacks seawater resistance and flexibility, and furthermore, due to its weight, it has not been fully satisfactory in terms of ease of handling and work.

The present invention solves the above-mentioned problems inherent in the contact reinforcing part of a curtain using a conventional metal backing plate, and makes the connection reinforcing part of the curtain easy to handle, durable and durable. The object of the present invention is to provide a connection reinforcing part for a membrane (curtain) for preventing the diffusion of contamination from seawater, etc., which has particularly excellent seawater resistance.

(Means for solving the problem) In order to achieve this purpose, the structure of the connection part of the membrane for preventing the diffusion of pollution from seawater, etc. according to the present invention is such that a sheet-shaped core material is embedded over the entire surface and a connection metal fitting is attached. A pair of elastic backing plates with rubber-like physical properties are made with windows.
It is characterized in that the corner portions of the preventive membrane are arranged on both sides, and the corner portions are sandwiched and reinforced using a pair of elastic contact plates.

(Example) Next, a specific example of the present invention will be described using the drawings.

Figure 1 is a partially cutaway plan view of an elastic backing plate with rubber-like physical properties adopted in the present invention, Figure 2 is an enlarged sectional view taken along the - line in Figure 1, and Figure 3 is a reinforcing core. It is a partial plan view of the material. In the figure, reference numeral 1 denotes an elastic backing plate having a fan-shaped overall shape and rubber-like physical properties, and a sheet-shaped reinforcing core material 2 is embedded within this backing plate over the entire surface of the backing plate.

This sheet-like reinforcing core material 2 is a plain woven fabric made of synthetic fiber yarns such as nylon, polyester, vinylon, aromatic polyamide, etc., and has weft yarns 3 with a large yarn diameter and warp yarns 4 with a yarn diameter smaller than the weft yarns. For example, if the weft yarn is expressed as 5000D/2×1000D/5/3×20 as a woven fabric composition and is 3 to 20 times stronger than the warp yarn, and the weave 16 is relatively coarse. An even number of TRC canvases 5 (canvass woven for strength in one direction (transverse direction)) are stacked, and when stacking, the first and second layers of canvas are woven with the weft 3 of the same thickness, respectively. 3 is 90°
They are stacked so that they have an intersection angle of . This lamination
It consists of a sheet-like canvas laminate in which normal canvas 6, which has conventionally been widely used for conveyor belts, is placed on both sides of a TRC canvas. Both sides of this sheet-like laminated core material 2 are made of a cover member 7 having a thickness of 1 to 10 mm and made of an elastic body having black or chromatic rubber-like physical properties with excellent water resistance, corrosion resistance, and tear resistance. ，
7 is placed.

At this time, when composing a rubber compound as an elastic body having rubber-like physical properties, NR,
When the cover member is made of a single material such as IR, IIR, CR, SBR, BR, etc. or a mixture thereof, or an elastic synthetic resin, the cover member may be made of, for example, urethane resin, polyester resin, etc. do.

The above-mentioned TRC canvas 5 and ordinary canvas 6 are each coated in advance with rubber or elastic synthetic resin, and are intended to be firmly bonded and integrated with each laminate constituent member of the core material 2 and the cover member.

The end of the reinforcing core material 2 covered with the cover member 7 may be exposed at the end of an elastic backing plate having rubber-like physical properties, or the end may be completely covered with the cover member 7. It may be hidden.

In addition, as the sheet-like reinforcing core material 2, the same yarn as the weft yarn with a large diameter shown in FIG.
Rough woven fabric 21 with one side of the weave 22 being 3 mm or more
If necessary, regular canvas is laminated on both sides (Fig. 4), or a stainless steel wire mesh 31 with an opening 32 of 5 to 10 mm on each side, which has excellent tear strength (Fig. In addition, by using at least one layer of steel filaments 42 oriented in the same direction and having relatively coarse gaps 43, the filaments 42 of each filament 41 can be With laminated bodies arranged orthogonally (Fig. 6)
Or nylon similar to the constituent threads of the TRC canvas mentioned above,
Synthetic fiber yarns such as polyester, vinylon, aromatic polyamide, etc. are knitted, and a plurality of layers of knitted fabric 51 (FIG. 7) with relatively large stitches 52 are laminated with the stitch directions of each knitted fabric orthogonal to each other. In addition, it is possible to adopt a structure in which normal canvas is laminated on both sides, and these can be achieved by using relatively large textures, stitches, or rough openings possessed by each reinforcing core component itself. This is intended to actively utilize the opening portion consisting of the gap to firmly connect and integrate the core material and the cover member, and by extension to strengthen the elastic backing plate having rubber-like physical properties.

The elastic backing plate 1 having the above rubber-like physical properties has the following properties:
A plurality of bolt holes 8, 8 and a window 9 for attaching a connecting fitting such as a ring or a hook are provided.

A pair of fan-shaped elastic backing plates 1, 1 having rubber-like physical properties are made of high-strength, for example, polyester fibers that have excellent durability, cold resistance, chemical resistance, and weather resistance. At the upper end corner of the diffusion prevention film (curtain) 10, a pair of backing plates 1 are placed on both sides of the curtain, with the convex curved edge 1' of the fan-shaped backing plate 1 being positioned toward the center of the curtain. , 1, the bolts are inserted into the corresponding bolt holes 8, and when the bolts are tightened, the pair of backing plates 1, 1 sandwich the upper end corners of the curtain, and the curtain 1 is tightened.
The corner connection part of 0 is reinforced.

Each of the curtains 10 has a float 11 attached to the entire length of the upper edge and the upper end corner is reinforced with a fan-shaped backing plate 1, and each of the curtains 10 is arranged above a pair of adjacent curtains 10, 10. The ends of the floats 11 are connected via a ring 12 with a hook or ring 13, and the pair of curtains 10, 10 each have a hook between the window 9 bored in the backing plate 1 and the ring 12. or ring 14
The curtains suspended in the sea are connected at their side edges (Figure 7).

(Effects of the invention) The present invention has the advantage that in the prevention membrane (curtain), the side edges of each prevention membrane are connected to each other, which is the most affected by external force, which inevitably occurs during the extension work of the prevention membrane. By sandwiching and reinforcing the upper corner of the preventive membrane, where fatigue is concentrated, with an elastic backing plate having rubber-like physical properties, the preventive membrane (curtain) is reinforced as a whole, and the backing plate itself is reinforced. By seeking materials with excellent seawater resistance, durability, and rust resistance, it is possible to prevent the harmful effects caused by cracks that occur on the backing plate from propagating to the curtain. By constructing the cover plate with an elastic body having rubber-like physical properties, even when both sides of the preventive film are held between the plates, the preventive film (curtain) is formed due to the contact between the peripheral edge of the cover plate and the preventive film.
In particular, by making the plate into a fan shape and applying a part of the peripheral edge to it with a gently convex curved edge, it is possible to eliminate the fear of breakage occurring at the part of the plate. This can further reduce the risk of damage caused by contact with the material. Furthermore, the reduction in weight of the plate itself greatly contributes to making the series of operations easier.

In addition, the sheet-shaped reinforcing core material for reinforcing the plate has appropriate opening groups formed over its entire surface with textures, stitches, gaps, etc., and these openings can be used to , a part of the cover member penetrates, and the strong bond between the core material and the cover member makes the elastic backing plate with rubber-like physical properties strong,
In turn, this greatly contributes to the reinforcement of the protective film, which is the ultimate goal, especially the connection parts.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a stepped cutout of a part of the elastic backing plate having rubber-like physical properties used in the present invention, Fig. 2 is an enlarged sectional view taken along the - line in Fig. 1, and Fig. 3 The figure is used as a sheet core material.
A plan view of a part of the TRC canvas, Figures 4 to 7 are partial plan views of other constituent members of the sheet-like core material,
Fig. 8 is a front view showing the upper end connection part of the membrane for preventing the diffusion of pollution from seawater, etc., Fig. 9 is a schematic plan view showing the extension status of the membrane for preventing pollution diffusion in the coastal area, and Fig. 10 is the - line in Fig. 9. It is a schematic enlarged sectional view in . In the figure, 1 is an elastic backing plate having rubber-like physical properties;
1' is a convex curved edge, 2 is a sheet-like reinforcing core material, 3 is a weft thread, 4 is a warp thread, 5 is a TRC canvas, 7 is a cover member, 9 is a window, 10 is a pollution diffusion prevention membrane (curtain),
16 is a weave, 21 is a coarse woven fabric, 22 is a weave, 3
1 is a wire mesh, 32 is an opening, 41 is a bamboo material, 43 is a gap, 51 is a knitted fabric, and 52 is a stitch.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A pair of elastic backing plates with rubber-like physical properties, in which a sheet-like core material is embedded over the entire surface and connection fitting mounting windows are provided, are placed on both sides of the corner portion of the preventive membrane. A structure of a connecting part of a membrane for preventing the diffusion of contamination from seawater, etc., which is arranged respectively, and has a pair of said elastic contact plates, and said corner parts are sandwiched and reinforced. (2) The structure of a connecting portion of a membrane for preventing the diffusion of contamination from seawater, etc., according to claim 1, wherein the elastic backing plate having rubber-like physical properties is formed in a fan shape when viewed from the front. (3) The core material is a sheet-like member in which at least one member constituting the core member is a sheet-like member having a group of openings scattered over the entire surface of the member. Structure of the connection part of the pollution diffusion prevention membrane. (4) The sheet-like core material is made of an even number of woven fabrics (TRC canvas) whose weft yarns have a larger diameter and are 3 to 20 times stronger than the warp yarns, and the weft yarns of each fabric maintain a 90° crossing angle. A structure of a connecting part of a membrane for preventing diffusion of contamination from seawater, etc., as set forth in one of claims 1 to 3 of the utility model registration claim, which is laminated and further has ordinary canvas laminated on both sides thereof. (5) The sheet-like core material is constructed by laminating a plurality of coarse woven fabrics with large yarn diameters for both the weft and the warp. The structure of the connecting part of the membrane for preventing the diffusion of pollution from seawater, etc. described. (6) The membrane for preventing the diffusion of pollution from seawater, etc., according to one of the claims 1 to 3, wherein the sheet-like core material is formed with at least one wire mesh. structure of the connection. (7) The sheet-like core material has a structure in which an even number of sudare materials formed with metal wires are laminated so that the constituent wires of each sudare material are orthogonal to each other. The structure of the connecting part of the membrane for preventing the diffusion of contamination from seawater, etc., as described in one of the items selected from item 3. (8) The scope of the utility model registration claim, in which the sheet-like core material has a structure in which a plurality of sheets of knitted fabric are laminated so that the stitches of each knitted fabric are alternately orthogonal to each other, and ordinary canvas is further laminated on both sides. Items 1 to 3
Structure of a connecting part of a membrane for preventing diffusion of pollution from seawater, etc., as set forth in one of the following items.