JP2023031338A - Bag material for water resistance civil engineering work, and bagging method of infilling material for water resistance civil engineering work - Google Patents

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 The present invention relates to a water-resistant bag material for civil engineering work, which is used by accommodating a filling material in a net-like bag member, and a bagging method for the water-resistant filling material for civil engineering work.

In general, bag materials for water-resistant civil engineering work, in which filling materials such as crushed stones and gravel are contained in net-like bag members, are used for the purpose of embankment and wave protection in the ocean or rivers, or prevention of scouring in bottom-mounted offshore wind power generation facilities. Widely used. Water-resistant bag materials for civil engineering work are usually used in a layered state on the seabed, quay walls, etc. where water-resistant construction is required. The filling material can be kept in a state of following the surface shape of the quay wall, and a good water resistance function can be obtained.

Regarding such water-resistant bag materials for civil engineering work, various proposals have hitherto been made to stably hold filling materials such as crushed stones and gravel inside the net-like bag member, for example, in Patent Document 1 below. there is In the patent document 1, a proposal is made to provide a middle connecting member that connects the bottom portion and the opening of the net-like bag member. The inner stuffing material tensions the net-like bag member through the middle connecting material, thereby restricting the movement of the inner stuffing material, thereby preventing shear deformation of the net-like bag member.

Japanese Patent No. 3911146

However, in the invention according to Patent Document 1 described above, it is assumed that the function of restricting the movement of the filling material such as crushed stone or gravel by the middle joint material may not be sufficient depending on the magnitude of the acting external force. It is conceivable that uneven distribution of the filling material inside the bag member may cause deformation of the mesh bag member. In addition, after the filling material is bagged, the opening is closed by manually pulling the peripheral edge portion forming the opening of the mesh bag member toward the center of the opening. need. Such closing work imposes a heavy burden on the worker, and also causes a decrease in work efficiency due to an increase in the number of steps of the bagging work.

Therefore, the present invention makes it possible to easily and efficiently pack the filling material into the net-like bag member, stably hold the filling material in the inner region of the net-like bag member, and To provide a bag material for water-resistant civil engineering work and a method for packing the inner stuffing material for water-resistant civil engineering work, which can satisfactorily prevent displacement and deformation of mesh bag members installed on sites such as quays and quays. intended to

In order to achieve the above object, the invention according to claim 1 is provided with a net-like bag member having a bottom portion at one end portion and an opening at the other end portion, wherein the inner region of the net-like bag member has a bottom portion. A water-resistant bag material for civil engineering work that is lifted by being engaged with a part of a lifting means in a state in which a filling material is accommodated, wherein the net-like bag member is attached to the bottom portion of the net-like bag member in a state where one end portion is fixed to the bottom portion of the net-like bag member. a plurality of inner cord members extending in an inner region of the mesh bag member; Each of the lateral cord members has a connecting portion, which is connected to the open cord member in a state where it can move along the extension direction of the open cord member, at the leading end portion of the inner cord member in the extending direction. In addition, one of the elevating means is provided at a portion of the annularly extending portion of the open cord member that is located between the adjacent connecting portions of the inner cord member. A configuration having an engaged portion with which the portion is engaged is adopted.

According to the water-resistant bag material for civil engineering work having such a configuration, after the inner region of the net-like bag member is filled with the filling material, the lifting means is lifted to the engaged portion of the opening cable member. By simply performing a simple work of engaging the parts and lifting upward, the opening cord member is narrowed down so as to decrease in diameter toward the center of the opening, and the opening of the mesh bag member automatically opens. In addition, a plurality of inner cord members extend so as to partition the inner regions of the plurality of net-like bag members, so that the inner stuffing can be performed easily and efficiently. The material is stably held in all directions of the circumferential direction and the radial direction, and positional displacement and deformation of the net-like bag member installed on the seabed, quay wall, or the like are well prevented.

Further, when the filling material is put into the inner region of the net-like bag member, even if excessive attention is not paid to evenly distributing the filling material, the filling material can be distributed among the plurality of internal filling materials as described above. Since it is stably held by the square wire member, the operation of inserting the filling material can be easily and efficiently performed.

At this time, as in the second aspect of the invention, the connecting portions of the inner cable members are arranged in parallel at substantially equal intervals over a plurality of locations in the extending direction of the open cable members. It is desirable to

According to the water-resistant bag material for civil engineering work having such a configuration, since the plurality of inner cable members are arranged so as to partition the inner area of the net-like bag member substantially evenly, the net-like bag member can be The filling material is maintained in a well-balanced and homogeneously dispersed state in the inner region, the filling material is held more stably, and the displacement and deformation of the net-like bag member are prevented more satisfactorily.

Further, in the invention according to Claim 3, there is provided a step of setting the mesh bag member according to either Claim 1 or Claim 2 in a production form, and setting the mesh bag member set in the production form. a step of putting the inner stuffing material into the inner region to bring it into a filled state; The opening of the net-like bag member is narrowed and closed toward the center of the opening by engaging the lifting means and lifting the engaged portion of the opening cord member by lifting the lifting means. A configuration including a step of setting the state is adopted.

According to the bagging method for water-resistant civil engineering filling material having such a configuration, after packing the filling material in the inner region of the net-like bag member, the plurality of engaged portions of the open cable member are engaged. The opening of the mesh bag member is automatically closed by simply performing a simple work of engaging a part of the elevating means with the lifting means and lifting it upward. In addition, the plurality of inner cord members extend in an upright state so as to partition the inner regions of the plurality of net-like bag members, so that the filling can be performed easily and efficiently. The material is stably held in all directions of the circumferential direction and the radial direction, and positional displacement and deformation of the net-like bag member installed on the seabed, quay wall, or the like are well prevented.

Further, when the filling material is put into the inner region of the net-like bag member, even if excessive care is not taken to distribute the filling material evenly, the filling material can Since it is stably held by the strip members, the operation of inserting the filling material can be easily and efficiently performed.

At this time, as in the invention according to claim 4, the original fabric of the mesh bag member is formed by a knitting net into a substantially cylindrical shape, and one end portion of the original fabric of the mesh bag member in the axial direction is centered. It is desirable to employ a configuration in which the bottom portion of the net-like bag member is formed by connecting the portions gathered in the direction.

According to such a configuration, since the raw fabric of the mesh bag member is knitted into a cylindrical shape from the beginning, the work involved in manufacturing the mesh bag member can be reduced, and the work efficiency can be further improved.

As described above, the bag material for water-resistant construction work and the method for packing the inner stuffing material for water-resistant civil engineering work according to the present invention provide a plurality of inner cable members extending from the bottom of the net-like bag member toward the opening. is connected in a movable state along the open cord member, and a plurality of engaged portions of the open cord member in the portion between the connecting portions of the inner cord member are adjacent to each other By adopting a configuration in which the elevating means is engaged, after the inner region of the mesh bag member is filled with the filling material, the elevating means is engaged with the plurality of engaged portions of the open cord member to move upward. Only by performing a simple work of lifting the mesh bag, the circularly extending opening cord member is narrowed down to a small diameter to automatically close the opening of the mesh bag member, thereby obtaining easy and efficient workability. On the other hand, by extending a plurality of inner cable members in an upright state in the inner region of the mesh bag member, the inner filling member is stably held in all directions of the circumferential direction and the radial direction, and the seabed is stably held. In addition to effectively preventing displacement and deformation of mesh bag members installed on site such as quays and quays, it also facilitates the work of inserting filling materials, making the bagging work of filling materials more efficient. can be

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external perspective explanatory view schematically showing a net-like bag member constituting a water-resistant bag material for civil engineering work according to one embodiment of the present invention, with the top and bottom aligned in use. 1. It is front explanatory drawing which represented typically the original fabric used in order to manufacture the net-like bag member of the bag material for water-resistant civil engineering shown in FIG. FIG. 3 is an external perspective explanatory view schematically showing a state in which the raw fabric of the net-like bag member shown in FIG. 2 is joined together at both end portions to form a substantially cylindrical shape. After gathering the lower edge portions of the raw fabric of the substantially cylindrical mesh bag member shown in FIG. FIG. 4 is an external perspective explanatory view schematically showing a state in which a net-like bag member is formed inside out by being tied to the central portion of the bottom. FIG. 4 is a schematic plan view showing a partial cross section of a state in which the open cord members are alternately passed through the meshes of the mesh bag member. 1. It is external perspective explanatory drawing which represented typically the state which inserted and set the net-like bag member of the bag material for water-resistant civil engineering shown in FIG. 1 inside the production formwork. FIG. 7 is a vertical cross-sectional explanatory view schematically showing a state in which the net-like bag member shown in FIG. 6 is set in a production mold. FIG. 8 is a vertical cross-sectional explanatory view schematically showing a state in which the inner region of the net-like bag member set in the manufacturing mold shown in FIG. 7 is filled with a filling material. FIG. 9 is a vertical cross-sectional explanatory view schematically showing a state in which a part of the opening cord member arranged at the opening of the mesh bag member shown in FIG. 8 is hooked and engaged with the hook of the elevator. FIG. 10 is a vertical cross-sectional explanatory view schematically showing a state in which the opening of the net-like bag member is closed by lifting a hook of the elevator from the state shown in FIG. 9 to lift a part of the opening cord member.

An embodiment of a water-resistant bag material for civil engineering work and a method for packing a water-resistant filling material for civil engineering work according to the present invention will be described in detail below with reference to the drawings.

The water-resistant bag material for civil engineering work according to the first embodiment of the present invention comprises a net-like bag member 1 having a substantially cup shape as shown in FIG. 1, for example. The net-like bag member 1 has a substantially disc-shaped bottom portion 1a at one end portion (lower end portion in FIG. 1) in the vertical direction in use, and has an annular shape at the other end portion (upper end portion in FIG. 1). It has an opening 1b extending to. A filling material (see reference numeral 11 in FIGS. 8 to 10) made of crushed stone, gravel, or the like is thrown into the inner region of the mesh bag member 1 from the opening 1b of the mesh bag member 1, and A mesh bag member 1 filled with stuffing material is installed so as to follow the surface shape of the seabed or quay wall at the site.

The above-described mesh bag member 1 has a mesh fabric in which mesh yarns made of a large number of twisted yarns are crossed to form a mesh. One having a knotted portion or a structure called a knotless net fabric, in which a knotted portion is formed instead of a knotted portion to increase strength, is adopted.

At the edge portion (upper edge portion in FIG. 1) forming the opening 1b of the mesh bag member 1, an opening cord member 2 extending annularly along the periphery of the opening 1b is provided. is installed. The open cable member 2 is formed from a long rope material such as a rope material or a metal material, and the open cable member 2 is, for example, a mesh bag member as shown in FIG. 1 meshes are mounted so as to intersect each other alternately, so that it can be circularly reciprocated in its longitudinal direction, which is its extending direction along the periphery of the opening 1b.

On the other hand, at the central portion of the bottom portion 1a of the above-described mesh bag member 1, a rope fixing portion 1c projecting in a mountain shape toward the opening portion 1b which is upward in FIG. 1 is picked up in an elongated shape. It is provided so as to form a shape. One end portions of a plurality of (four) inner cable members 3 formed of a long rope material made of rope material, metal material or the like are bound to the cable fixing part 1c. It is combined and made into a fixed state.

The plurality of (four) inner cable members 3 described above extend the inner area of the mesh bag member 1 from the cable fixing portion 1c provided on the bottom portion 1a of the mesh bag member 1 to the upper part of FIG. It extends so as to rise while expanding radially toward the opening 1b, which is the direction. Annular connecting portions 3a are provided at the leading end portions (upper end portions in FIG. 1) of each of the inner cable members 3, and each connecting portion 3a is , and is slidably connected to the above-described open cable member 2, so that the tip portion (upper end portion in FIG. 1) of each inner cable member 3 extends in the longitudinal direction of the open cable member 2. It is connected so as to be able to reciprocate in the circumferential direction along.

The ring-shaped connecting portion 3a provided at the tip portion (the upper end portion of FIG. 1) of the inner cable member 3 may be attached with a member formed separately from the inner cable member 3. Simply, it can be provided by rounding the tip portion (upper end portion in FIG. 1) of the inner cable member 3 into an annular shape.

As described above, the connecting portions 3a of the inner cable member 3 are arranged in parallel over a plurality of locations (four locations) in the longitudinal direction of the open cable member 2 extending annularly. Each of the connecting portions 3a arranged at (four places) is arranged at substantially equal intervals from each other. Among the portions where the open cord member 2 extends annularly in the longitudinal direction, the portion located between the pair of connecting portions 3a, 3a adjacent to each other is one of the lifting means described later. The engaged portion 2a is engaged with a hook portion (see reference numeral 12 in FIGS. 9 and 10).

The net-like bag member 1 constituting the water-resistant bag material for civil engineering work according to one embodiment of the present invention having such a configuration is, for example, a net-like bag member original extending in a plane as shown in FIG. It is formed by processing anti-1A. That is, first, as shown in FIG. 3, the net-like bag material material 1A has both end edge portions in the extending direction (horizontal direction in FIG. 2) of the net-like bag material material 1A. The whole is formed into a substantially cylindrical shape by being joined together via the .

The net-like bag member raw fabric 1A formed in the above-described substantially cylindrical shape is made so that the inner diameter of the open end edge portion on one side (lower side in FIG. 3) in the cylinder axis direction of the net-like bag member raw fabric 1A is reduced. They are gathered toward the center, and the gathered portions are joined together by sewing, for example. As shown in FIG. 4, the substantially cylindrical mesh bag member raw fabric 1A is closed at one axial end portion (lower end portion in FIG. 3). A bottom portion 1a is formed at one end portion (lower end portion in FIG. 4) and an opening portion 1b is formed at the other end portion (upper end portion in FIG. 4). It is formed in a

Furthermore, the central portion of the bottom portion 1a of the net-like bag member 1 formed as described above protrudes axially outward (downward in FIG. 4) while being squeezed in a spire shape. By doing so, the cable fixing portion 1c is formed. That is, the cable fixing portion 1c protrudes outward in the axial direction (downward in FIG. 4) in the shape of a mountain, and a plurality of (four) inward projections are provided with respect to the cable fixing portion 1c. One end portion of the cable member 3 is tied and fixed. At the other end portion (lower end portion in FIG. 4) of each of the inner cable members 3, the above-described ring-shaped connecting portion 3a is provided separately or integrally.

Next, after the entire mesh bag member 1 is turned upside down, an open cord member 2 made of a long rope material is placed along the periphery of the opening 1b formed in the upper end portion of the mesh bag member 1. is passed. The operation of threading the open cord members 2 through the mesh of the mesh bag member 1 is, for example, as shown in FIG. It is done so as to cross each other. In addition, when the operation of passing the opening cable member 2 through the mesh of the mesh bag member 1 is performed in this way, the inner cable members 3 of the plurality (four) of the above-mentioned inner cable members 3 are connected to the inner side of the connection portion 3a. An open cord member 2 is passed through.

Furthermore, as described above, in the operation of threading the opening cable member 2 through the mesh of the mesh bag member 1, the connection portions 3a, 3a of the inner cable member 3 of the opening cable member 2 are adjacent to each other. The portion positioned between the two is drawn outward over several meshes of the mesh bag member 1. - 特許庁The portion drawn out to the outside extends to form a substantially U-shape, and the portion extending in the substantially U-shape is a hook portion of the lifting means (Figs. 9 and 9) which will be described later. 10) is engaged with the engaged portion 2a. Through the above steps, a water-resistant bag material for civil engineering work having a net-like bag member 1 as shown in FIG. 1 is formed.

In the mesh bag member 1 of the waterproof bag material for civil engineering work formed as described above, a plurality of (four) inner cable members 3 are opened from the bottom portion 1a of the inner region of the mesh bag member 1. The net-like bag member 1, which is present up to the opening cord member 2 near the portion 1b, is bagged with the filling material 11 as follows, for example.

That is, in the bagging method of the water-resistant inner stuffing material for civil engineering work according to one embodiment of the present invention, first, as shown in FIGS. is set so as to be inserted inwardly into a well-known manufacturing formwork 10 which has been conventionally used. The mesh bag member 1 according to the present invention set in the production mold 10 is held in a state in which the opening 1b of the mesh bag member 1 opens upward.

Next, as shown in FIG. 8, a filling material 11 made of crushed stone, gravel, or the like is put into the inner region of the net-like bag member 1 set in the production mold 10 as described above, and filled. made into a state. At this time, as will be described later, in the operation of inserting the filling material 11, there is basically no need to pay attention to, for example, evenly distributing the filling material 11 in the inner region of the mesh bag member 1. The filling operation of the stuffing material 11 is easily performed.

When the inner region of the mesh bag member 1 is filled with the filling material 11 in this manner, the hook portion 12 of the elevator is positioned above the opening 1b of the mesh bag member 1 as shown in FIG. is arranged, and a part of the opening cord member 2 arranged along the opening 1b of the net-like bag member 1 is stretched and hooked onto the hook portion 12 of the elevator. Specifically, the engaged portions 2a at a plurality of locations (four locations) of the open cable member 2 extending between the connecting portions 3a, 3a of the inner cable member 3 are adjacent to each other. , 2a, .

Then, from the state in which the engaged portion 2a of the opening cable member 2 is engaged with the hook portion 12 of the elevator as shown in FIG. 9, the hook portion 12 of the elevator is raised as shown in FIG. As a result, the engaged portions 2a (four locations) of the open cord member 2 are pulled upward. The engaged portion 2a of the opening cord member 2, which is lifted upward as the hook portion 12 of the elevator rises, is lifted upward while deforming into a bent state in which the wave shape is stretched vertically. However, after being placed in tension by the upward tensile force applied to the open cable member 2, the plurality of (4) inner cable members connected to the open cable member 2 3, 3, . . . begin to rise in the inner area of the mesh bag member 1 and are pulled up.

When the plurality (four) of the inner cable members 3, 3, . As the portion 2a is pulled upward, the wavy shape of the opening cable member 2 is further elongated vertically, and at the same time, the opening cable member 2 extends the edge portion of the opening 1b of the mesh bag member 1 to the diameter. It is drawn toward the inside of the direction (center direction) so as to reduce the diameter. In this way, the opening 1b of the net-like bag member 1 is gradually closed while being squeezed radially inward (center) by the clamping action directed radially inward (center) by the open cord member 2. Ultimately, the opening 1b of the net-like bag member 1 is strongly squeezed to automatically close it. After the opening cord member 2 is tightened so as to be fixed to the mesh bag member 1, the lifting of the hook portion 12 of the lifting equipment is stopped, thereby completing the bagging operation.

As described above, according to the present embodiment, the mesh bag member 1 is automatically closed only by performing a simple task of lifting the mesh bag member 1 after the filling material 11 is put into the mesh bag member 1. Easy and efficient workability can be obtained because it is made in a state.

In addition, in a state in which the filling material 11 is completely packed, the plurality (four) of the inner cord members 3 extend in an upright state so as to partition the inner area of the mesh bag member 1. Therefore, the filling material 11 such as crushed stone or gravel filled in the inner area of the net-like bag member 1 is stable in all circumferential and radial directions of the inner area of the net-like bag member 1. Therefore, the net-like bag member 1 installed at the site such as the seabed or the quay wall is effectively prevented from being dislocated or deformed.

Furthermore, when the filling material 11 is put into the inner region of the net-like bag member 1, even if the filling material 11 is not evenly distributed, it can be placed in crushed stone, gravel, etc. as described above. Since the stuffing material 11 is stably held, the filling work of the filling material 11 can be easily performed.

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 necessary.

For example, in the above-described embodiment, a net bag member having a substantially cylindrical shape is formed by connecting the net bag member raw fabric (see reference numeral 1A in FIG. 4) at both longitudinal end edge portions. It is also possible to directly form a substantially cylindrical mesh bag member by using the weaving means and apparatus.

In this way, the raw fabric of the mesh bag member is knitted into a cylindrical shape from the beginning, so that the work involved in manufacturing the mesh bag member can be reduced and the work efficiency can be further improved.

Further, although the above-described embodiment is provided with four inner cable members 3, a plurality of inner cable members may be used, and two or five or more inner cable members may be used. It goes without saying that it is also possible to arrange them.

As described above, the present invention provides a bag material for water-resistant civil engineering work having a wide variety of net-like bag members used for embankment and wave protection in the sea or river, or for bottom-mounted offshore wind power generation equipment, etc., and for water-resistant civil engineering work. It can be widely applied to the bagging method of the filling material.

1 mesh bag member 1a bottom 1b opening 1c cable fixing part 1A net bag member raw fabric 1B sewn part 2 opening cable member 2a engaged part 3 inner cable member
3a connecting part 10 production formwork 11 filling material 12 hook part of elevator

Claims (4)

A mesh bag member having a bottom at one end and an opening at the other end,
A water-resistant bag material for civil engineering work that is lifted by being engaged with a part of a lifting means in a state in which a filling material is accommodated in an inner region of the mesh bag member,
a plurality of inner cable members extending to an inner region of the mesh bag member with one end fixed to the bottom of the mesh bag member;
an open cord member attached so as to be annularly movable along the opening of the mesh bag member;
with
Each of the plurality of inner cable members is connected to the opening cable member in a state that it can move along the extension direction of the opening cable member at the tip portion of the inner cable member in the extending direction. and has a connecting portion that is
Part of the elevating means is engaged with a portion of the annularly extending portion of the open cord member that is located between the adjacent connecting portions of the inner cord members. A water-resistant bag material for civil engineering work, characterized by having an engaged part. 2. The water-resistant civil engineering work according to claim 1, wherein the connecting portions of the inner cable members are arranged in parallel at substantially equal intervals over a plurality of locations in the extending direction of the opening cable member. bag material. a step of setting the net-like bag member according to claim 1 or claim 2 in a production mold;
a step of putting the filling material into the inner region of the mesh bag member set in the production mold to bring it into a filled state;
a step of engaging the engaged portion of the open cord member mounted in a state of being annularly movable along the opening of the mesh bag member with the lifting means;
a step of closing the opening of the net-like bag member toward the center of the opening by raising the elevating means to lift the engaged portion of the opening cord member;
A method of bagging a water-resistant civil engineering filling material, comprising: Forming the raw fabric of the mesh bag member into a substantially cylindrical shape with a knitted net,
The bottom portion of the net-like bag member is formed by gathering one axial end portion of the substantially cylindrical shape in the original fabric of the net-like bag member toward the center of the substantially cylindrical shape and joining them together. 3. The method of bagging the filling material for water-resistant civil engineering work according to 3 above.

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