Waterproof bag material for civil engineering work, and method for filling waterproof bag material for civil engineering work

Abstract

To efficiently perform a bagging work into a net-like bag member and to properly prevent deformation of a net-like bag member installed in a site.SOLUTION: Tip portions of a plurality of inner rope members 3 extending inside a net-like bag member 1 are connected along an opening rope member 2, and a part of the opening rope member 2 is fitted to ascend / descend means 12. Just by performing a simple work of hanging up the opening rope member 2 by the ascend / descend means 12 after bagging an infilling material 11, an opening 1b of the opening rope member 2 is automatically narrowed down into a closed state to improve workability easily and efficiently. On the other hand, by erecting the plurality of inner rope members 3 inside the net-like bag member 1, the infilling material 11 is held stably in all directions.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a waterproof bag material for civil engineering works in which a filling material is contained in a mesh bag member, and a method for filling waterproof filling material for civil engineering works. [Background technology]

[0002] In general, waterproof civil engineering bag materials, in which crushed stone, gravel, or other filler material is housed in a mesh bag member, are widely used for purposes such as revetments and wavebreaks in oceans or rivers, or for preventing scouring in bottom-fixed offshore wind power generation facilities. Waterproof civil engineering bag materials are usually used in layers stacked on the seabed, quays, etc. where waterproofing is required, and the flexibility of the mesh bag members allows the filler material to be kept in a state that follows the surface shape of the seabed or quay, thereby achieving good waterproofing performance.

[0003] Various proposals have been made in the past regarding such waterproof bag materials for civil engineering work, such as those for stably holding filler material such as crushed stone or gravel inside a mesh bag member, as in the following Patent Document 1. Patent Document 1 proposes providing a connecting member that connects the bottom and opening of the mesh bag member, and when an external force such as waves acts on the mesh bag member, the filler material that tends to move due to the external force tensions the mesh bag member via the connecting member, thereby restricting the movement of the filler material and preventing shear deformation of the mesh bag member. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 3911146 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0005] However, in the invention of Patent Document 1, the function of the binder to prevent the movement of filler material, such as crushed stone or gravel, may be insufficient depending on the magnitude of the external force acting on the material. Furthermore, uneven distribution of the filler material inside the mesh bag member may cause deformation of the mesh bag member. Furthermore, after the filler material is filled into the bag, the peripheral edge forming the opening of the mesh bag member must be manually pulled toward the center of the opening to close the opening. This closing operation places a heavy burden on the worker and reduces work efficiency by increasing the number of steps in the bag filling process.

[0006] Therefore, the present invention aims to provide a waterproof bag material for civil engineering work, and a method for bagging waterproof bag material for civil engineering work, which enables the filling work of the mesh bag member to be carried out easily and efficiently, while stably holding the filling material in the inner area of ​​the mesh bag member, and effectively preventing the mesh bag member installed at the site, such as the seabed or a quay, from shifting or deforming. [Means for solving the problem]

[0007] In order to achieve the above object, the invention according to claim 1 is a waterproof civil engineering bag material that includes a mesh bag member having a bottom at one end and an opening at the other end, and that is lifted by engaging with a part of a lifting means in a state where a filler material is contained in the inner area of ​​the mesh bag member. a cable fixing portion provided in a state of protruding toward the opening; The device comprises a plurality of inner rope members extending in an inner region of the mesh bag member with one end portion fixed, and an opening rope member attached in a state in which it can move in an annular shape along the opening of the mesh bag member, and each of the plurality of inner rope members has a connecting portion at a tip portion in the extending direction of the inner rope member that is connected to the opening rope member in a state in which it can move along the extending direction of the opening rope member, and has an engaged portion with which a part of the lifting means engages, at a portion of the annular extending portion of the opening rope member that is located between adjacent connecting portions of the inner rope members. By pulling the engaged portion of the opening cord upward, the inner cord is fully extended upward, and then by further pulling the engaged portion of the opening cord upward, the opening cord narrows the edge portion of the opening of the mesh bag member radially inward to reduce its diameter. The following configuration is adopted.

[0008] With a waterproof civil engineering bag material having such a configuration, after filling the inner region of the mesh bag member with the filling material, the simple task of engaging part of the lifting means with the engaged portion of the opening cord member and lifting it upward causes the opening cord member to narrow in diameter toward the center of the opening, automatically closing the opening of the mesh bag member, resulting in easy and efficient workability.At the same time, since multiple inner cord members extend to separate the inner regions of multiple mesh bag members, the filling material is held stably in all directions, both circumferentially and radially, and displacement and deformation of mesh bag members installed at the site, such as on the seabed or a quay, is effectively prevented.

[0009] Furthermore, when pouring the filler material into the inner region of the mesh bag member, the work of pouring the filler material can be carried out easily and efficiently, without having to take excessive care to distribute the filler material evenly, since the filler material is stably held by the multiple inner cable members as described above.

[0010] In this case, as in the invention of claim 2, it is desirable that the connecting portions of the inner rope members be arranged in parallel at approximately equal intervals over multiple locations in the extension direction of the opening rope members.

[0011] With a waterproof civil engineering bag material having such a configuration, multiple inner cable members are arranged to divide the inner area of ​​the mesh bag member approximately evenly, so that the fill material is maintained in a balanced and homogeneous distribution state in the inner area of ​​the mesh bag member, the fill material is held in place more stably, and displacement and deformation of the mesh bag member are more effectively prevented.

[0012] Furthermore, the invention of claim 3 adopts a configuration that includes the steps of setting the mesh bag member described in either claim 1 or claim 2 in a production formwork, pouring the filling material into the inner region of the mesh bag member set in the production formwork to create a filled state, engaging the engaged portion of the opening cord member, which is attached in a state in which it can move in a circular shape along the opening of the mesh bag member, with the lifting means, and raising the lifting means to lift the engaged portion of the opening cord member, thereby narrowing the opening of the mesh bag member toward the center of the opening to create a closed state.

[0013] According to the method for bagging waterproof civil engineering work filler material having such a configuration, after the filler material is bagged into the inner region of the mesh bag member, the simple task of engaging part of the lifting means with the multiple engaged portions of the opening cord member and lifting it upward is all that is required; the annularly extending opening cord member is narrowed to a small diameter, and the opening of the mesh bag member is automatically closed, resulting in easy and efficient workability. At the same time, since the multiple inner cord members extend in an upright state so as to separate the inner regions of the multiple mesh bag members, the filler material is held stably in all directions, both circumferentially and radially, and displacement and deformation of the mesh bag members installed at the site, such as the seabed or a quay, is effectively prevented.

[0014] Furthermore, when pouring the filler material into the inner region of the mesh bag member, the work of pouring the filler material can be carried out easily and efficiently, without having to take excessive care to distribute the filler material evenly, since the filler material is stably held by the inner cable members as described above.

[0015] In this case, it is desirable to adopt a configuration in which the original roll of the mesh bag member is formed into an approximately cylindrical shape by knitting a mesh, and the bottom of the mesh bag member is formed by joining together the axial end portions of the original roll of the mesh bag member that are gathered toward the center, as in the invention of claim 4.

[0016] According to this configuration, the raw fabric of the mesh bag member is initially knitted into a cylindrical shape, which reduces the labor required for manufacturing the mesh bag member and further improves work efficiency. [Effects of the Invention]

[0017] As described above, the waterproof bag material for construction work and the method for bagging waterproof civil engineering work filling material according to the present invention employ a configuration in which the tip portions of the multiple inner cables extending from the bottom of the net bag member toward the opening are connected in a state in which they can move along the opening cable member, and the multiple engaged portions of the opening cable member in the portion between adjacent connecting portions of the inner cable member are engaged with the lifting means, so that after the filling material is bagged in the inner region of the net bag member, the lifting means is engaged with the multiple engaged portions of the opening cable member and the bag is lifted upward. By simply performing a simple operation, the opening cord member extending in a circular shape is narrowed to a small diameter, automatically closing the opening of the mesh bag member, making the work easy and efficient.On the other hand, by extending multiple inner cord members in an upright state into the inner area of ​​the mesh bag member, the fill material is held stably in all directions, both circumferentially and radially, effectively preventing displacement and deformation of the mesh bag member installed at the site, such as the seabed or a quay, and by facilitating the work of loading the fill material, the work of bagging the fill material can be made even more efficient. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 is an explanatory oblique view of the exterior of a mesh bag member constituting a waterproof bag material for civil engineering work according to one embodiment of the present invention, shown with the top and bottom aligned in the state in which it is used. [Figure 2] 2 is a front view showing a schematic illustration of a raw sheet used to manufacture the mesh bag member of the waterproof bag material for civil engineering work shown in FIG. 1. FIG. [Figure 3] 3 is an explanatory perspective view showing a schematic view of the appearance of the original web of the mesh bag member shown in FIG. 2 formed into a substantially cylindrical shape by joining both end portions together. FIG. [Figure 4]This is an oblique view of the exterior, schematically illustrating the state in which the lower edge portions of the original roll of the approximately cylindrical mesh bag member shown in Figure 3 are gathered toward the center to form the bottom, and then one end portion of multiple (four) inner cord members is tied to the center portion of the bottom of the mesh bag member to form the mesh bag member inside out. [Figure 5] 10 is a plan view illustrating the state in which the opening cord member is passed through the mesh of the mesh bag member so that it alternately crosses the mesh of the mesh bag member, in a schematic partial cross section. FIG. [Figure 6] 2 is an explanatory perspective view showing a schematic view of the exterior of the mesh bag member of the waterproof bag material for civil engineering work shown in FIG. 1 inserted and set inside the production formwork. FIG. [Figure 7] 7 is a longitudinal cross-sectional explanatory view showing a schematic state in which the mesh bag member shown in FIG. 6 is set in a production formwork. FIG. [Figure 8] 8 is a longitudinal cross-sectional explanatory view showing a state in which a filler material is poured into the inner region of the mesh bag member set in the production formwork shown in FIG. 7 and filled therein. FIG. [Figure 9] 9 is a longitudinal cross-sectional explanatory view showing a state in which a part of an opening cord member arranged at the opening of the mesh bag member shown in FIG. 8 is hooked onto a hook of an elevator and engaged therewith. FIG. [Figure 10] This is a vertical cross-sectional explanatory diagram schematically showing the state in which the hook of the elevator is raised from the state shown in Figure 9 to lift up a part of the opening cord member, thereby closing the opening of the mesh bag member. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, an embodiment of the waterproof bag material for civil engineering work and the method for filling the bag with the waterproof filling material for civil engineering work according to the present invention will be described in detail with reference to the drawings.

[0020] A waterproof bag material for civil engineering work according to a first embodiment of the present invention includes a mesh bag member 1 having a generally cup-like shape, as shown in Fig. 1. The mesh bag member 1 has a generally disk-shaped bottom 1a at one end (the lower end in Fig. 1) in the up-down direction when in use, and an annular opening 1b at the other end (the upper end in Fig. 1). Filling material (see reference numeral 11 in Figs. 8 to 10) made of crushed stone, gravel, or the like is poured into the interior of the mesh bag member 1 from the opening 1b, and the mesh bag member 1 filled with the filler material is placed so as to conform to the surface shape of the seabed or quay wall at the construction site.

[0021] The mesh bag member 1 described above has a mesh fabric in which mesh threads made of many twisted yarns are crossed to form a mesh, and may have knots at the intersections of the mesh threads as knots, or may have a structure called knotless mesh in which knots are formed instead of knots to increase strength.

[0022] An opening cord 2 extending in a circular shape along the periphery of the opening 1b is attached to the edge portion (the upper edge portion in Figure 1) that forms the opening 1b of such a mesh bag member 1. This opening cord 2 is made of a long rope material made of a rope material, a metal material, or the like, and as shown in Figure 5, for example, the opening cord 2 is attached in a state in which it alternately crosses the mesh of the mesh bag member 1, so that it can move back and forth in a circular shape in the longitudinal direction, which is the direction in which it extends along the periphery of the opening 1b.

[0023] Meanwhile, a cable fixing portion 1c is provided in the center of the bottom 1a of the mesh bag member 1, protruding in a mountain shape toward the opening 1b, which is in the upward direction in Fig. 1, so as to have a long, pinched-up shape. One end portions of a plurality (four) of inner cable members 3, each made of a long rope material such as a cord or metal material, are tied to and fixed to the cable fixing portion 1c.

[0024] The above-mentioned multiple (four) inner cords 3 extend from cord fixing portions 1c provided on the bottom portion 1a of the mesh bag member 1 in the inner region of the mesh bag member 1, spreading out radially and rising toward the opening 1b, which is in the upward direction in Fig. 1. A connecting portion 3a formed in a ring shape is provided at the tip portion in the extension direction of each of the inner cords 3 (the upper end portion in Fig. 1), and each connecting portion 3a is slidably connected to the above-mentioned opening cord 2, so that the tip portion (the upper end portion in Fig. 1) of each inner cord 3 is connected so as to be able to reciprocate circumferentially along the longitudinal direction of the opening cord 2.

[0025] The annular connecting portion 3a provided at the tip portion (upper end portion in Figure 1) of the inner cable member 3 may be a member formed separately from the inner cable member 3, but more simply, it can be provided by rounding the tip portion (upper end portion in Figure 1) of the inner cable member 3 into an annular shape.

[0026] As described above, the connecting portions 3a of the inner rope 3 are arranged in parallel at a plurality of locations (four locations) in the longitudinal direction of the annularly extending opening rope 2, and the connecting portions 3a arranged at the plurality of locations (four locations) are arranged at substantially equal intervals from one another. Of the locations where the annularly extending opening rope 2 is located in the longitudinal direction, the portion located between the pair of connecting portions 3a, 3a adjacent to each other serves as an engaged portion 2a that engages with a hook portion (see reference numeral 12 in Figures 9 and 10) that is part of the lifting means described below.

[0027] The mesh bag member 1 constituting the waterproof bag material for civil engineering work according to one embodiment of the present invention having the above-described configuration is formed by processing a mesh bag member raw roll 1A extending in a plane, for example, as shown in Fig. 2. That is, as shown in Fig. 3, both end edge portions in the extension direction (left and right direction in Fig. 2) of the mesh bag member raw roll 1A are first joined together via, for example, seams 1B, thereby forming the entire mesh bag member into a substantially cylindrical shape.

[0028] In the net bag material raw roll 1A formed into the above-mentioned substantially cylindrical shape, the open edge portion at one end in the cylindrical axial direction of the net bag material raw roll 1A (the lower end in Fig. 3) is gathered toward the center so as to reduce the inner diameter, and the gathered portions are joined together, for example, by sewing. In this way, the substantially cylindrical net bag material raw roll 1A is closed at one end in the axial direction (the lower end in Fig. 3), so as to form a bottom 1a at one end in the axial direction (the lower end in Fig. 4) and an opening 1b at the other end (the upper end in Fig. 4), as shown in Fig. 4, and a substantially cup-shaped net bag material 1 is formed in an inverted state.

[0029] Furthermore, the central portion of the bottom 1a of the mesh bag member 1 formed as described above is pinched and squeezed like a spire, and protrudes outward in the axial direction (downward in Fig. 4), thereby forming a cord fixing portion 1c. That is, the cord fixing portion 1c protrudes outward in the axial direction (downward in Fig. 4) in a mountain shape, and one end portion of a plurality (four) of inner cord members 3 is tied to the cord fixing portion 1c to be fixed. The other end portion (lower end portion in Fig. 4) of each of the inner cord members 3 is provided with the aforementioned annular connecting portion 3a, either separately or integrally.

[0030] Next, after the entire mesh bag member 1 is turned inside out and reversed, an opening cord 2 made of a long rope is passed around the periphery of the opening 1b formed at the upper end of the mesh bag member 1. The opening cord 2 is passed through the mesh of the mesh bag member 1 by alternately crossing the opening cord 2 over every single stitch or every few stitches of the mesh bag member 1, as shown in Figure 5, for example. During the process of passing the opening cord 2 through the mesh of the mesh bag member 1 in this manner, the opening cord 2 is passed inside the connecting portions 3a of the multiple (four) inner cords 3 described above.

[0031] Furthermore, in the process of threading the opening cord member 2 through the mesh of the mesh bag member 1 as described above, the portion of the opening cord member 2 located between the adjacent connecting portions 3a, 3a of the inner cord member 3 is pulled outward over several meshes of the mesh bag member 1. This outwardly pulled portion extends to form a substantially U-shape, and this portion extending in a substantially U-shape becomes the engaged portion 2a that engages with the hook portion (see reference numeral 12 in Figures 9 and 10) of the lifting means described below. Through the above steps, a waterproof bag material for civil engineering work equipped with the mesh bag member 1 as shown in Figure 1 is formed.

[0032] In the mesh bag member 1 of the waterproof bag material for civil engineering work formed as described above, multiple (four) inner cable members 3 exist from the bottom 1a of the inner area of ​​the mesh bag member 1 to the opening cable member 2 near the opening 1b, and the filling work of the filling material 11 is carried out for such a mesh bag member 1, for example, as follows.

[0033] That is, in a method for bagging waterproof filling material for civil engineering work according to one embodiment of the present invention, first, as shown in Figures 6 and 7, the mesh bag member 1 of the waterproof bag material for civil engineering work according to the present invention is set so as to be inserted inward into a conventionally used well-known production formwork 10. The mesh bag member 1 according to the present invention set in the production formwork 10 is held in a state in which the opening 1b of the mesh bag member 1 is open facing upward.

[0034] Next, as shown in Figure 8, filler material 11 made of crushed stone, gravel, etc. is poured into the inner region of the mesh bag member 1 set in the production formwork 10 as described above, and a filled state is achieved. In the work of pouring the filler material 11 at this time, as will be described later, care is basically not required to evenly distribute the filler material 11 in the inner region of the mesh bag member 1, and the work of pouring the filler material 11 can be easily carried out.

[0035] When the inner region of the mesh bag member 1 is filled with the filling material 11 in this manner, as shown in Fig. 9, the hook portion 12 of the elevator is positioned above the opening 1b of the mesh bag member 1, and a portion of the opening cord member 2 arranged along the opening 1b of the mesh bag member 1 is stretched and hung on the hook portion 12 of the elevator. Specifically, the engaged portions 2a, 2a, ... at multiple locations (four locations) of the opening cord member 2 extending between the adjacent connecting portions 3a, 3a of the inner cord member 3 are hooked onto the hook portion 12 of the elevator arranged above, and brought into an engaged state.

[0036] 9, the engaged portions 2a of the opening cord 2 are engaged with the hook portions 12 of the elevator, and then the hook portions 12 of the elevator are raised as shown in Fig. 10, thereby pulling the engaged portions 2a (four locations) of the opening cord 2 upward. As the hook portions 12 of the elevator are raised, the engaged portions 2a of the opening cord 2 are pulled upward while being deformed into a bent state with their corrugated shape being stretched vertically. After the opening cord 2 is tensioned by an upward tensile force applied to it, the multiple (four) inner cords 3, 3, ... connected to the opening cord 2 begin to rise and be pulled up in the inner region of the mesh bag member 1.

[0037] When the multiple (four) inner cords 3, 3, ... are fully extended upward in a vertically elongated shape, the engaged portion 2a of the opening cord 2 is further pulled upward, causing the corrugated shape of the opening cord 2 to further elongate vertically. At the same time, the opening cord 2 pulls the edge portion of the opening 1b of the mesh bag member 1 inward (toward the center) in the radial direction, narrowing the opening 1b. In this way, the tightening action of the opening cord 2 inward (toward the center) in the radial direction gradually closes the opening 1b of the mesh bag member 1, narrowing it inward (toward the center). Finally, the opening 1b of the mesh bag member 1 is tightly tightened and automatically closed. After the opening cord 2 is tightened to secure it to the mesh bag member 1, the lifting of the hook portion 12 of the lifting equipment is stopped, completing the bag filling operation.

[0038] According to this embodiment, after the filling material 11 is poured into the mesh bag member 1, the mesh bag member 1 can be automatically put into a closed state simply by performing the simple task of lifting up the mesh bag member 1, thereby making the work easy and efficient.

[0039] Furthermore, when the filling material 11 has been completely filled into the bags, the multiple (four) inner cable members 3 extend in an upright position to separate the inner area of ​​the mesh bag member 1, so that the filling material 11, such as crushed stone or gravel, filled in the inner area of ​​the mesh bag member 1 is stably held in place in all circumferential and radial directions of the inner area of ​​the mesh bag member 1, effectively preventing displacement or deformation of the mesh bag member 1 installed at the site, such as the seabed or a quay.

[0040] Furthermore, when pouring the filler material 11 into the inner region of the mesh bag member 1, the work of pouring the filler material 11 can be easily performed without having to pay attention to dispersing the filler material 11 evenly, since the filler material 11 such as crushed stone or gravel is stably held as described above.

[0041] Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and can be appropriately modified and applied as needed.

[0042] For example, in the above-described embodiment, a mesh bag material roll (see symbol 1A in Figure 4) is formed into an approximately cylindrical mesh bag material by joining both longitudinal edge portions, but it is also possible to directly form an approximately cylindrical mesh bag material by using an appropriate weaving means or device.

[0043] In this way, the raw fabric of the mesh bag member is initially knitted into a cylindrical shape, which reduces the amount of work required to manufacture the mesh bag member and further improves work efficiency.

[0044] Furthermore, although the above-described embodiment has four inner cable members 3, it goes without saying that it is possible to have multiple inner cable members, and it is also possible to arrange two or five or more inner cable members. [Industrial Applicability]

[0045] As described above, the present invention can be widely applied to waterproof civil engineering bag materials equipped with a wide variety of mesh bag members used for seawalls and wavebreaks in oceans or rivers, or bottom-fixed offshore wind power generation facilities, etc., and to methods for bagging waterproof civil engineering filling materials. [Explanation of symbols]

[0046] 1 Mesh bag member 1a bottom 1b opening 1c Cable fixation part 1A Net bag material raw material 1B Suture section 2 Opening cable members 2a Engaged part 3 Inner cable members 3a Connecting part 10 Production formwork 11 Filling material 12 Elevator hook

Claims

1. The bag has a mesh bag member having a bottom at one end and an opening at the other end, In a waterproof bag material for civil engineering work, the mesh bag member is engaged with a part of a lifting means and lifted up in a state where a filler material is contained in an inner region of the mesh bag member, a cord fixing portion provided on the bottom of the mesh bag member so as to protrude toward the opening; a plurality of inner cord members extending in an inner region of the mesh bag member with one end portion fixed to the cord fixing portion; an opening cord member attached in a circularly movable state along the opening of the mesh bag member; Equipped with Each of the plurality of inner rope members has a connecting portion at a tip end portion of the inner rope member in the extending direction, the connecting portion being connected to the opening rope member in a state where the connecting portion is movable along the extending direction of the opening rope member; a portion of the opening rope member extending in an annular shape, the portion being located between adjacent connecting portions of the inner rope member, has an engaged portion with which a part of the lifting means is engaged; By pulling the engaged portion of the opening cord upward, the inner cord is fully extended upward, and then by further pulling the engaged portion of the opening cord upward, the opening cord narrows the edge portion of the opening of the mesh bag member radially inward to reduce its diameter. A waterproof bag material for civil engineering work.

2. A waterproof bag material for civil engineering work as described in claim 1, characterized in that the connecting portions of the inner cable members are arranged in parallel at approximately equal intervals over multiple locations in the extension direction of the opening cable members.

3. a step of setting the mesh bag member according to claim 1 or 2 in a production formwork; a step of pouring the filler material into an inner region of the mesh bag member set in the production formwork to fill the mesh bag member; a step of engaging an engaged portion of the opening cord member, which is attached in a circularly movable state along the opening of the mesh bag member, with the lifting means; a step of lifting the lifting means to lift up the engaged portion of the opening cord member, thereby narrowing the opening of the mesh bag member toward the center of the opening and closing it; A method for bagging waterproof civil engineering work filling material, comprising:

4. The raw web of the mesh bag member is formed into a substantially cylindrical shape by knitting a mesh, A method for bagging waterproof civil engineering work filling material as described in claim 3, characterized in that the bottom of the mesh bag member is formed by gathering and connecting one end portion of the axial direction of the approximately cylindrical shape of the original roll of the mesh bag member toward the center of the approximately cylindrical shape.

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