JP2602771B2 - Laying sheet for masonry on the seabed - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to the construction of breakwaters, jetties, etc. by stacking rubble, blocks, etc. on the ground at the water bottom, near the water, etc. in the sea, river, etc., which are apt to be scoured by tidal currents, water currents or waves. The present invention relates to a laying sheet for masonry on a seabed or the like used when revetment work is performed.

[0002]

2. Description of the Related Art A conventional laying sheet 1 shown in FIG.
Is a sheet known in Japanese Patent Publication No. 53-40030, which has water permeability but prevents passage of soil and the like.
And a wire mesh 3 that is stretched over the entire surface of the sheet 2 and is integrally connected to the sheet 2.
Are organized by synthetic resin fibers having toughness and corrosion resistance, and the wire netting 3 has toughness and corrosion resistance.

The laying sheet 1 is generally composed of a unit sheet 12 formed of synthetic resin fibers and a unit wire mesh which is stretched over the entire surface of the unit sheet 12 and is integrally connected to the unit sheet 12. 13 and a predetermined number of the unit laying sheets 11 are arranged adjacent to each other, and the unit laying sheets 11 adjacent to each other are joined to each other with a fastener such as a rope to form the laying sheet 1 having a predetermined area.

When the above-described laying sheet 1 is used, for example, on the seabed, a predetermined number of unit laying sheets 11 are submerged in seawater at the laying place, and then the diver sets the unit wire mesh of each unit laying sheet 11. The unit laying sheets 11 are sequentially laid on a predetermined seabed with the 13 side up, and the unit laying sheets 11 adjacent to each other are joined by fasteners.

[0005] When the laying of the laying sheet 1 on the seabed is completed, as shown in FIG.
In addition, a heavy anchor member 5 is placed on the periphery of the laying sheet 1 at a predetermined interval to secure the stability of the laying sheet 1, and thereafter, the rubble 6, the block, and the like are placed on the wire mesh 3 of the laying sheet 1. A structure 7 such as a breakwater is constructed on the laying sheet 1 by stacking or dropping by appropriate means. In FIG. 10, a part of the rubble 6 constituting the structure 7 is not shown.

In the conventional laying sheet 1, since the entire surface of the sheet 2 is protected by the wire mesh 3, even if there is a tidal current or a wave at the time of laying, it is more stable than the one without the wire mesh 3. It has the special advantage that the sheet 2 is unlikely to break down when the stone 6 is dropped, and the sheet 2 allows water to permeate relatively freely but prevents the passage of earth and sand. Therefore, when the structure 7 is constructed on the laying sheet 1 or after the construction, there is also an advantage that the entire laying sheet 1 is settled by the weight of the structure 7 almost uniformly.

However, in the conventional laying sheet 1, when the ground under the anchor member 5 is scoured by tides, waves, etc., and the anchor member 5 falls off from the laying sheet 1,
There is a danger that the peripheral portion of the laying sheet 1 is turned up, scouring of the ground below the peripheral portion further proceeds, and the structure 7 on the laying sheet 1 is unevenly settled.

[0008] In order to eliminate this danger, Japanese Utility Model 57-
In the conventional laying sheet known in Japanese Patent No. 6579, FIG.
As shown in FIG. 2, a unit wire mesh 23 integrally connected to the unit sheet 22 in the unit laying sheet 21 (partly not shown) is protruded from the unit sheet 22, and the unit wire mesh 23 is provided with a protruding portion 24. The concrete pole 25 is fixed to the unit wire mesh 23 of the projecting portion 24.

For this reason, as shown in FIG. 12, in the conventional laying sheet 20, when the ground under the concrete pole 25 is scoured by tides, waves, and the like, and the concrete pole 25 is buried in the water bottom, no more than this. Scour is prevented, and as a result, the structure 26 on the laying sheet 20 does not undergo uneven settlement due to scour.

However, the conventional laying sheet 20 has the structure shown in FIG.
As shown in FIG. 3, if the ground below the concrete pole 25 has irregularities, a gap 27 is formed between the concrete pole 25 and the ground, and scouring of the ground due to tides, waves, etc. proceeds from this gap, and the ground is laid. There is a risk that uneven settlement may occur in the structure 26 (see FIG. 12) on the seat 20.

[0011]

SUMMARY OF THE INVENTION In view of the above-mentioned danger of the prior art, the present invention provides a method for constructing a structure on a laying sheet caused by scouring even if the ground under the peripheral portion of the laying sheet has irregularities. It is an object to provide a laying sheet that can prevent uneven settlement.

[0012]

Means for Solving the Problems As means for solving the above problems, in the invention of claim 1, it is made of a synthetic resin fiber having toughness and corrosion resistance, has water permeability, but does not allow passage of earth and sand. A sheet having a predetermined area is formed from a sheet to be prevented and a wire mesh having toughness and corrosion resistance, which is stretched over the entire surface of the sheet and integrally joined with the sheet, and has a flexible weight. A configuration is adopted in which a band is disposed around the wire mesh side of the superposed sheet and is integrally connected to the superposed sheet.

According to the second aspect of the present invention, the unit sheet is made of synthetic resin fiber having toughness and corrosion resistance, has water permeability, but prevents passage of earth and sand, and is stretched over the entire surface of the unit sheet. A unit polymer sheet is formed from the unit sheet and a unit wire mesh having toughness and corrosion resistance integrally bonded thereto, and a predetermined number of the unit polymer sheets are arranged adjacent to each other, and the unit polymer sheets adjacent to each other are connected to each other. Are joined to each other with a hook-and-loop fastener to form a superposed sheet having a predetermined area.

According to the third aspect of the present invention, a weight band having flexibility is formed by a predetermined number of unit weights arranged adjacent to each other, and each of the unit weights is integrated with the superposed sheet by a locking member. Is added to the invention of claim 1 or claim 2.

[0015]

According to the first aspect of the present invention, as shown in FIG.
Since it is arranged on the periphery on the 03 side and is integrally connected to the superposed sheet 101, if the weight band 104 is buried in the ground, further scouring is prevented.

Moreover, since the weight band 104 has flexibility, even if the ground under the peripheral portion of the superposed sheet 101 has irregularities as shown in FIG. The belt 104 bends and the polymerized sheet 10 under the weight belt 104
1 closely adheres to the ground, and scouring is prevented.

According to the first aspect of the present invention, as shown in FIG. 1, the wire mesh 103 having toughness and corrosion resistance is stretched over the entire surface of the sheet 102 and is integrally connected to the sheet 102. Conventional laying sheet 1 shown in FIG.
Similarly, even when there is a tidal current, a wave, or the like at the time of laying the laying sheet 100, the laying sheet 100 stably sinks to the water bottom by the weight of the wire mesh 103, and the laying sheet 100 is placed on the seabed or the like with the wire mesh 103 side up. When the sheet is laid, the entire surface of the sheet 102 is protected by the wire mesh 103, and the sheet 102 is less likely to be damaged at the time of dropping rubble or the like than a sheet having no wire mesh 103.

According to the first aspect of the present invention, the sheet 102 formed of synthetic resin fibers having toughness and corrosion resistance is provided.
However, since it has water permeability but prevents passage of soil and the like, the laying sheet 1 is similar to the conventional laying sheet 1 shown in FIG.
When a structure such as a breakwater is constructed on the surface of the building, the laying sheet 1 due to the weight of the structure at the time of construction or after construction is constructed.
The subsidence of 00 occurs almost evenly.

According to the second aspect of the present invention, as shown in FIG.
Since the unit polymer sheets 111 adjacent to each other are joined by the hook-and-loop fastener 114, as shown in FIG. 1, a predetermined number of the unit polymer sheets 111 are arranged adjacent to each other to form the polymer sheet 101 having a predetermined area. The joining of the adjacent unit polymerized sheets 111 on the sea floor or the like can be completed.

In addition, according to the second aspect of the present invention, if the joining of the unit polymerized sheets 111 adjacent to each other by the surface fastener 114 is performed on the entire joining side of the unit polymerized sheet 111, it is as if it is a single polymerized sheet. As described above, the gap between the joined portions of the unitized superposed sheets 111 from the superposed sheet 101 having a predetermined area can be eliminated, so that scouring due to tides, waves, and the like from the gaps can be prevented.

According to the third aspect of the present invention, as shown in FIG.
A weight band 104 having flexibility is formed by a predetermined number of unit weight bodies 121 arranged adjacent to each other, and each of the unit weight bodies 121 is integrated with the superposed sheet 101 by a locking member 122 (see FIG. 3). Therefore, it is possible to separately manufacture the polymerized sheet 101 and a predetermined number of unit weight bodies 121 and transport them separately to the laying site of the laying sheet 100, and further lay the seabed or the like. At the site, the laying sheet 100 can be completed only by connecting each unit weight body 121 to the superposed sheet 101 with the locking tool 122.

Further, according to the third aspect of the present invention, since the weight band 104 having flexibility is formed by the predetermined number of unit weight bodies 121, the conventional laying sheet 2 shown in FIG.
Even when the weight of the weight band 104 is made heavier than that of the concrete pole 25 used for 0, the weight of each unit weight body 121 can be made lighter.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a laying sheet 10 according to the first embodiment of the present invention will be described.
Reference numeral 0 denotes a sheet 102 which is made of a synthetic resin fiber having toughness and corrosion resistance, has water permeability, but prevents passage of earth and sand, and a sheet 1 which is stretched over the entire surface of the sheet 102.
02 and a wire mesh 103 having toughness and corrosion resistance integrally formed therewith, a polymer sheet 101 having a predetermined area is formed, and a flexible weight band 104 is formed around the polymer sheet 101 on the wire mesh 103 side. And integrated with the superposed sheet 101.

The laying sheet 100 is made of a synthetic resin fiber having toughness and corrosion resistance, and has a unit sheet 112 having water permeability but preventing passage of earth and sand.
The unit sheet 11 stretched over the entire surface of the unit sheet 112
2 and a unit wire netting 113 having toughness and corrosion resistance integrally bonded, a unit superposed sheet 111 is formed, and a predetermined number of unit superposed sheets 111 are arranged adjacent to each other;
As shown in FIG. 2, the unit polymerized sheets 111 adjacent to each other are joined by the hook-and-loop fastener 114 to form a polymerized sheet 101 having a predetermined area.

As shown in FIG. 1, each of the unit polymerized sheets 111 is formed of a metal material subjected to a rust-preventive treatment and is generally called a diamond-shaped wire mesh.
3 is stretched over the entire surface of the unit sheet 112 formed of synthetic resin fibers such as nylon, polyethylene, polypropylene or polyester having toughness and corrosion resistance;
A rust-proof steel wire 115 is disposed through the inside of the unit coil forming the unit wire mesh 113 and the inside of the floating structure 116 of the unit sheet 112, and the surface of the unit sheet 112 is secured by the flexible band 117. , And both ends of the steel wire 115 are bent to form a unit wire mesh 113.
And the unit wire mesh 113 is integrally connected to the unit sheet 112 via the steel wire rod 115 and formed, and can be wound in a direction orthogonal to the unit coil forming the unit wire mesh 113. (See FIG. 4).

As shown in FIG. 2, the hook-and-loop fastener 114 is provided between the upper surface of the joint between the unit polymer sheets 111 adjacent to each other and the joint between the other unit polymer sheets 111. Each is fixed to the lower surface.

By the way, the joining between the unit polymerized sheets 111 adjacent to each other by the surface fastener 114 may be performed on the entire adjacent side of the unit polymerized sheet 111 adjacent to each other or on a part of the adjacent side. However, it is more preferable to perform the process on the entire adjacent side than on a part of the adjacent side.

This is because if the entire adjacent side is formed, a gap between the joint portions can be eliminated from the polymerized sheet 101 having a predetermined area formed by bonding the predetermined number of unit polymerized sheets 111. Polymerized sheet 1
This is because scouring by a tidal current, a wave, or the like from the gap at the joint portion can be prevented as if it were 01.

The weight band 104 of the laying sheet 100 is shown in FIG.
As shown in FIG. 3, each unit weight 121 is formed by a predetermined number of unit weights 121 arranged adjacent to each other, and is arranged over the entire periphery of the peripheral portion of the superposed sheet 101.
Are formed by asphalt reinforced with a reinforcing member such as a wire rope, and are united by a one-touch type locking device 122 as an eggplant ring attached to the reinforcing member via a chain as shown in FIG. It is connected to the unit wire net 113 of the superposed sheet 111.

The locking member 122 is not limited to a one-touch type such as an eggplant ring, but is preferably a one-touch type in consideration of the joining operation between the unit weight body 121 and the unit polymerized sheet 111.

In the laying sheet 100 described above, since the unit weight 121 is joined to the unit superposed sheet 112 by the locking member 122, each unit weight 121 and each unit superposed sheet 112 are individually manufactured and transported. Accordingly, as shown in FIG. 4, each unit polymerized sheet 112 can be transported in a wound state.

Incidentally, in the laying sheet 100, each unit weight 121 forming the weight band 104 is formed of asphalt. However, as shown in FIG. 3, in the laying sheet 200 according to the second embodiment, each unit weight 221 forming the weight band 204 is made of a futon cage 2 made of a rust-proof metal material.
31 and a plurality of heavy blocks 232 such as stones and blocks filled in the interior of each futon basket 231.

In the laying sheet 200, each of the unit weights 221 is provided with a one-touch locking member 122 such as an eggplant ring.
(See FIG. 3), the unit wire mesh 213 of the unit polymerized sheet 211
The weight band 204 is integrally connected to the superposed sheet 201, and the configuration other than the weight band 204 is the same as the laying sheet 100 of FIG.

In the laying sheet 200, as shown in FIG. 8, each unit weight 221 is composed of a two-tiered futon basket 231 and a number of heavy masses 232 filled in each futon basket 231. Each of the two-stage futon baskets 231 is filled with a large number of heavy masses 232, and the lid thereof is hermetically sealed. They are connected to each other by 122.

In the laying sheet 200, FIGS.
As shown in FIG. 5, three blocks of unit weights 221 are arranged adjacent to each other to form one block of the weight belt 204. However, the configuration of one block of the weight belt 204 is not limited to the three-row arrangement of the unit weights 221 and may be one or more rows.
Further, the configuration of each unit weight body 221 is not limited to the two-stage stack of the futon baskets 231 and may be one or more stages.

The point is that a weight band 204 composed of a predetermined number of unit weights 221 is provided around the superposed sheet 201.
However, it is only necessary that the sheet has a flexibility and a weight suitable for the condition of the laying ground of the laying sheet 200.

7 and FIG.
Denotes a sheet of the laying sheet 200, 203 denotes a wire mesh of the laying sheet 200, and 212 denotes a unit superposed sheet 211.
Are shown, respectively. 7, only a part of the heavy mass 232 is illustrated, and the other is omitted.

By the way, the laying sheet 10 described above is used.
At 0,200, as shown in FIGS. 5 and 8, further scouring is stabilized in a state where a part of the weight belts 104, 204 is buried in the ground such as the sea bottom by scouring due to tides or the like. Thus, the widths of the weight bands 104 and 204 are selected. That is, in the laying sheets 100 and 200, part of the weight belts 104 and 204 is buried in the ground in a state where scouring due to tide and the like is stable, and the remaining parts of the weight belts 104 and 204 are exposed to water. I have.

For this reason, in the laying sheets 100 and 200, the boundary between the buried portion and the exposed portion in the superposed sheets 101 and 201 is protected by the exposed portion in the weight belts 104 and 204. Polymerized sheet 1 caused by collision or contact with stones
01, 201 can be prevented, and as a result,
Laying sheets 100 and 200 are concrete poles 25
There is an advantage that the life is longer than that of the conventional laying sheet 20 shown in FIG. 12 in which the whole is buried in the ground.

Further, in the laying sheet 100, since the weight band 104 is formed of impermeable asphalt, the ground below the weight band 104 is not affected by tidal currents, waves, and the like. Heavy band 10 by scouring
When part of 4 is buried in the ground such as the seabed, further scouring is reliably prevented.

In the laying sheet 200, since the weight band 204 is formed from the futon basket 231 and the heavy masses 232 such as stones and blocks filled in the inside of each futon basket 231. Acts like a wave-dissipating block, and energy such as tidal currents and waves
Thus, when the part of the weight belt 204 is buried in the ground such as the seabed, further scouring is reliably prevented.

As shown in FIGS. 1 and 7, both of the laying sheets 100 and 200 are weight bands 104 and 20.
4 is arranged over the entire periphery of the superposed sheets 101, 201, but the weight bands 104, 204 need not necessarily be arranged over the entire periphery of the superposed sheets 101, 201. Depending on the conditions of the laying site of the laying sheets 100 and 200, the laying sheets 100 and 200 may be arranged at predetermined intervals around the superposed sheets 101 and 201, and the ground that is not scoured like the ground on the shore side of the revetment work. In some cases, the weight belts 104 and 204 located on the ground that is not scoured need not be arranged around the superposed sheets 101 and 201.

Since both the laying sheets 100 and 200 are the embodiments of the first, second and third aspects, as shown in FIG. 1 and FIG. , 211 are arranged adjacent to each other, and the unit polymerized sheets 111, 211 adjacent to each other are
(See FIG. 2), the polymerized sheet 10 having a predetermined area
1,201 are formed. However, in the laying sheet according to claim 1 alone or the laying sheet according to claim 1 and claim 3, the superposed sheet having a predetermined area may be formed from one unit superposed sheet.

Further, since both the laying sheets 100 and 200 are the embodiments of the first, second and third aspects, as shown in FIGS. Weight bands 104, 204 having flexibility are formed from the unit weights 121, 221.
21 and 221 are integrally connected to the superposed sheets 101 and 201 by locking members 122 (see FIG. 3).
However, in the laying sheet according to claim 1 alone or the laying sheet according to claim 1 and claim 2, the weight band 104, 20
4 may be formed as an integral body, or may be an integral body of the weight belts 104, 204 or the weight bands 104, 204 composed of a predetermined number of unit weights 121, 221.
May be manufactured integrally with the polymerized sheets 101 and 201.

However, the weight bands 104 and 204 are formed of a predetermined number of unit weights 121 and 221, and each of the unit weights 121 and 221 is integrally connected to the superposed sheets 101 and 201 by a locking member 122. This is preferable because the unit weights 121 and 221 and the polymerized sheets 101 and 201 can be separately manufactured and transported.

[0046]

According to the first aspect of the present invention having the structure and operation described above, the flexible weight band is disposed at the periphery of the superposed sheet on the wire mesh side and is integrally connected to the superposed sheet. Therefore, if the weight band is buried in the ground, further scouring is prevented, and even if there is unevenness in the ground under the periphery of the superposed sheet, the weight band will bend along the unevenness of the ground. The polymer sheet below the weight band is brought into close contact with the ground to prevent scouring.

According to the first aspect of the present invention, since the wire mesh having toughness and corrosion resistance is stretched over the entire surface of the sheet and is integrally connected to the sheet, tides, waves, and the like during the laying of the laying sheet are reduced. Even if the laying sheet is settled down to the bottom of the water stably with the weight of the wire mesh, and if the laying sheet is laid on the seabed etc. with the wire mesh side up, the entire sheet is protected by the wire mesh, and when dropping rubble, etc. Another effect is that the sheet is less likely to be damaged than a laid sheet having no wire mesh.

Further, according to the first aspect of the present invention, since the sheet made of synthetic resin fibers having toughness and corrosion resistance has water permeability but prevents the passage of earth and sand, the structure such as a breakwater is provided on the laid sheet. When the object is constructed, there is also an effect that the laying sheet is settled down substantially evenly by the weight of the structure during or after the construction.

According to the second aspect of the present invention, a predetermined number of unit polymerized sheets are arranged adjacent to each other to form a polymerized sheet having a predetermined area, and at the same time, joining of the unit polymerized sheets adjacent to each other on the seabed or the like can be completed. As compared with the conventional laying sheet 1 of FIG. 9 in which adjacent unit laying sheets are joined to each other with a fastener such as a rope, an effect that the joining time of the unit superposed sheets on the seabed or the like can be shortened. .

According to the second aspect of the present invention, if the joining of the unit polymer sheets adjacent to each other by the surface fastener is performed on the entire side of the unit polymer sheet to be joined, it is as if it is a single polymer sheet. Since the gap between the polymerized sheets having a predetermined area and the joining portion between the unitary polymerized sheets can be eliminated, there is also an effect that scouring due to tides, waves, and the like from the gaps can be prevented.

According to the third aspect of the present invention, it is possible to separately produce a polymer sheet and a predetermined number of unit weights, and to separately transport them to the laying site of the laying sheet. The laying sheet can be completed simply by joining each unit weight to the polymer sheet with the fastener at the site, so compared to the case where the polymer sheet and the weight band are integrated into a laid sheet, This has the effect of making it easier to handle the laying sheet during transportation and laying.

According to the third aspect of the present invention, even when the weight of the weight band is heavier than that of the concrete pole 25 used for the conventional laying sheet 20 shown in FIG. 12 can be made lighter, so that the handling of each unit weight body can be made easier as compared with the concrete pole 25 shown in FIG.

[Brief description of the drawings]

FIG. 1 is a plan view showing a first embodiment of claims 1, 2 and 3. FIG.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an explanatory perspective view showing a combined state of a unit weight body and a polymer sheet of FIG. 1;

FIG. 4 is a side view showing the unit polymer sheet of FIG. 1 in a wound state.

FIG. 5 is a cross-sectional view showing a state of laying at the bottom of the water shown in FIG.

FIG. 6 is an explanatory cross-sectional view showing a laying state on a water bottom having irregularities of the one shown in FIG. 1;

FIG. 7 is a plan view showing a second embodiment of the first, second, and third aspects.

FIG. 8 is a cross-sectional view showing a state of laying at the bottom of the water shown in FIG.

FIG. 9 is a plan view showing an example of a conventional product.

FIG. 10 is an explanatory diagram showing a state of laying at the bottom of the water shown in FIG. 9;

FIG. 11 is a plan view showing another example of a conventional product.

FIG. 12 is a cross-sectional view showing a state of laying at the bottom of the water shown in FIG. 11;

FIG. 13 is an explanatory cross-sectional view showing a state of being laid on a water bottom having irregularities of the one shown in FIG. 11;

[Explanation of symbols]

 100, 200 Laying sheet 101, 201 Polymerized sheet 102, 202 Sheet 103, 203 Wire mesh 104, 204 Weight band 111, 211 Unit polymerized sheet 112, 212 Unit sheet 113, 213 Unit wire mesh 114 Surface fastener 121, 221 Unit weight body 122 Stop

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shiro Sasaki 4-2-4 Arima, Miyama-ku, Kawasaki-shi, Kanagawa 502 Saginuma-higashi Sky Mansion 502 (72) Inventor Kiyoshi Sato 5-1-3-405, Ochiai, Tama-shi, Tokyo (56) References Japanese Patent Publication No. 53-4030 (JP, B2) Japanese Patent Publication No. 54-22220 (JP, B2) Japanese Utility Model Publication Sho 57-6879 (JP, Y2)

Claims (3)

(57) [Claims] 1. A sheet made of synthetic resin fibers having toughness and corrosion resistance and having water permeability but preventing passage of earth and sand, and a sheet stretched over the entire surface of the sheet and integrally joined with the sheet. A polymer sheet having a predetermined area is formed from the provided toughness and corrosion-resistant wire mesh, and a flexible belt is disposed around the wire mesh side of the polymer sheet and is integrated with the polymer sheet. Laying sheet for masonry on the seabed or the like that is joined together. 2. A unit sheet which is made of synthetic resin fiber having toughness and corrosion resistance and has water permeability but prevents passage of earth and sand, and a unit sheet which is stretched over the entire surface of the unit sheet and integrated with the unit sheet. A unit polymer sheet is formed from a unitary metal mesh having toughness and corrosion resistance that is bonded to each other, a predetermined number of the unit polymer sheets are arranged adjacent to each other, and the unit polymer sheets adjacent to each other are joined by a surface fastener. 2. The laid sheet for masonry on the seabed or the like according to claim 1, wherein a superposed sheet having a predetermined area is formed. 3. A flexible weight band is formed by a predetermined number of unit weights disposed adjacent to each other, and each of the unit weights is integrally connected to the superposed sheet by a locking member. The laying sheet for masonry on a seabed or the like according to claim 1 or 2.