TW201529932A - Construction and landfill method for soft foundation and foundation with liquefaction potential, and structural body bag - Google Patents

Abstract

Construction on a soft foundation and on a foundation with liquefaction potential, provided with: a structural body production step for filling a structural body bag (100) with a filler (200) and producing a structural body (300); a recess formation step for forming a recess (304) in a state in which the center part is maximally indented on a bottom surface (302) of the structural body (300); and a foundation reinforcing step for placing the structural body (300), in the state of having the recess (304) formed thereon, on a soft foundation (400) or a foundation (410) with liquefaction potential, and producing a reinforced foundation (500). It is thereby possible to reinforce a soft foundation or a foundation with liquefaction potential in a simple and reliable manner.

Description

Construction method and filling method for soft ground and liquefied ground, and structural bag

The present invention relates to a construction method and a filling method for a weak ground plate composed of, for example, clay or peat containing a large amount of water, soft sand, and the like, and a liquefaction suspected liquefaction phenomenon due to an earthquake or the like, and A structural bag that can be used as a structure in a weak ground or the like by putting dirt, sand, or the like into the inside.

In the past, in various constructions such as coasts, wetlands, liquid floors, and other land-building constructions, a step for reinforcing the weak ground has been required. That is, when sand is directly laid on a weak site and filled or piled up, sometimes the ground is sunk or collapsed by mixing the spread sand with the clay of the weak site. When the foundation of concrete or the like is directly applied to such a weak site, the pore water pressure in the site directly below the foundation rises, and the strength of the soil particles is lowered, which sometimes causes sinking, and thus, There is a need for countermeasures against this phenomenon. Moreover, in order to prevent the construction from being delayed and safely propelled, it is necessary to ensure that even a weak site can be used as a general heavy machine or a vehicle. Industry environment.

As a countermeasure against such a weak ground, there has been known a surface treatment method in which a sheet such as a non-woven fabric or a resin net is laid on a weak ground plate, and as one of the surface treatment methods, it is also proposed to be available. A method of expanding and reinforcing a sheet laid on a weak ground plate by a cylindrical body into which a fluid is introduced (for example, refer to Patent Document 1).

[Previous Technical Literature] [Patent Document]

Patent Document 1: Japanese Laid-Open Patent Publication No. 2007-9543

However, in the surface treatment method in which a sheet or the like is laid on a weak ground plate, since the ground portion of the lower layer portion requires the sheet reaction force of the sheet to obtain tension as much as possible, it is difficult to apply it to a moor or a highly weak ground. Further, even if a sand layer is placed above the sheet to form a drainage layer, and a step of burying the soil above the shovel is performed, if it is a ground having a certain degree of ground reaction force, the load applied to the upper portion is still applied. Further, since the sheet is deformed in the lower portion of the ground plate, sufficient strength cannot be exhibited, and there is a problem in that it is impossible to generate a reinforcing floor which can support the traveling of the heavy implement or the structure.

Moreover, in the method described in the above Patent Document 1, it is costly to manufacture a sheet having a cylindrical body, and it is required to guide the fluid. The special blower or pump into the cylindrical body has a problem of increasing cost. Further, although there has been a method of facilitating the laying of the sheet on the weak ground plate, in order to smoothly spread the sheet, it is necessary to appropriately control the introduction of the fluid into the cylindrical body in accordance with the terrain or the like, which requires labor and cost.

Moreover, although it is not only a weak site, it has become a relatively hard and hard site. However, in the future, there may be sites with liquefaction doubts due to earthquakes, etc., and it is expected that there will be an appropriate reinforcement in advance. To stop the damage caused by the occurrence of liquefaction.

In view of the above circumstances, the present invention provides a construction method, a filling method, and a structural body bag for a weak ground plate and a liquefied ground plate which can easily and reliably perform reinforcement of a weak ground plate and a liquefied ground.

The present invention provides a method for constructing a weak ground plate and a liquefied ground, characterized in that it has a structure forming step of filling a filling material into a structural body bag to form a structural body, and a concave portion forming step. a recessed portion in a state in which the center portion is the most concave in the bottom surface of the structure; and a ground reinforcing step of downloading the structure on the weak ground or the liquefied ground in a state in which the concave portion is formed Generate a reinforcement site.

According to still another aspect of the present invention, there is provided a weak ground plate and a construction method of a liquefied ground plate, wherein the structural body bag has a bottom a face portion that constitutes the bottom surface; and a suspension body that is connected to the bottom surface portion from the inside and that is not connected except for the bottom surface portion, and is suspended by the suspension body in the recess portion forming step The aforementioned structure forms the aforementioned concave portion.

The present invention is also a method of constructing a weak ground plate and a liquefied ground plate, wherein the suspension body includes a main member that is connected to a main connection position at a substantially central portion of the bottom surface portion; The auxiliary member is connected to an auxiliary connection position on the outer peripheral side of the main connection position of the bottom surface portion, and the other end is connected to the connection position in the main member, from the main connection position to the connection position The distance until the distance is set to 50% or less of the height of the structure.

According to still another aspect of the present invention, there is provided a method for constructing a weak ground plate and a liquefied ground plate, wherein the structural body bag has water permeability.

According to another aspect of the present invention, in the method of forming a weak ground plate and a liquefied ground, the filler is produced from the weak ground or the liquefied ground. The aforementioned structure is inside the body bag.

According to still another aspect of the invention, in the method of forming a weak ground plate and a liquefied ground, the recess is formed by compressing the structure to form the recess and absorbing moisture contained in the filler. Discharge it.

The invention also has the weak ground plate and the liquefaction suspect as the above means In the construction method of the ground plate, in the ground reinforcing step, the reinforcing ground is gradually enlarged by a heavy machine disposed on the reinforcing ground.

According to still another aspect of the present invention, in a method of reinforcing a weak ground plate and a liquefied ground, the ground reinforcing step is carried on the structure on the weak ground or the liquefied ground. A plate member is placed to generate the aforementioned reinforcing floor.

According to still another aspect of the present invention, there is provided a weak ground plate and a construction method of a liquefied ground plate, wherein in the ground reinforcing step, the structure is placed on the weak ground plate or the liquefied ground plate. Sand or stone is sprinkled to create the aforementioned reinforcing ground.

The present invention further provides a filling method, which is a method for filling a weak ground plate and a construction method having a liquefaction suspected ground using the above-mentioned means, and further characterized in that: the outer wall generating step is performed outside the filling level. Stacking the foregoing structure to form a protective outer wall; and filling a flat material input step, which is to put the filling material into the filling level to generate a filling land, and in the step of reinforcing the ground, the structure is formed with the concave portion The state is downloaded to the aforementioned weak ground in the filling level or the aforementioned liquefied ground to generate the reinforcing land.

According to still another aspect of the present invention, in the outer wall forming step, the structure is stacked on the reinforcing ground plate on the outer circumference of the filling area to form the protective outer wall.

According to still another aspect of the present invention, the method of filling the above-mentioned means, wherein the step of reinforcing the ground is performed before the step of putting in the filling material, thereby The reinforcing ground is formed below the fill-in floor.

According to still another aspect of the present invention, in the method of filling the above-mentioned means, the ground reinforcing step is performed after the step of filling the flat material, whereby the reinforcing ground is formed above the flat ground.

Further, the present invention provides a structural bag which is formed by filling a filler with a filler, and is characterized in that it includes a bottom portion which constitutes a bottom surface of the structure, and a suspension body. The bottom portion is connected to the bottom surface portion and is not connected except for the bottom surface portion. The suspension body includes a main member that is connected to a main connection position at a substantially central portion of the bottom surface portion, and an auxiliary portion. a member that connects one end to an auxiliary connection position on an outer peripheral side of the main connection position of the bottom surface portion, and connects the other end to a connection position of the main member, from the main connection position to the connection position The distance is set to 50% or less of the height of the above structure.

According to the construction method, the filling method, and the structural bag of the weak ground plate and the liquefied floor, the excellent effect of reinforcing the weak ground and the liquefied ground can be achieved easily and reliably.

100‧‧‧Structure body bag

110‧‧‧The bottom part of the structural body bag

112‧‧‧Outside the bottom of the bottom

114‧‧‧ inside side

114a‧‧‧Main connection location

114b‧‧‧Auxiliary connection position

120‧‧‧ side section

122‧‧‧Upper

130‧‧‧ Inner cover

132‧‧‧Outside the inner cover

140‧‧‧Outer cover

142‧‧‧Outside the outer cover

144‧‧‧ inserted through slot

150‧‧‧suspension

152‧‧‧ main components

152a‧‧‧Link location

154‧‧‧Auxiliary components

156‧‧‧ Ring

160a, 160b‧‧‧adhesive

200‧‧‧Filling materials

300, 310‧‧‧ structures

302‧‧‧Bottom of the structure

304‧‧‧ recess

312‧‧‧ bottom

320‧‧‧Structure body bag

400, 420‧‧‧ Weak territory

402‧‧‧Sloping surface

410‧‧‧ Sites with suspicion of liquefaction

430‧‧‧ fill the ground

500‧‧‧Reinforcing sites

600‧‧‧Ordinary Site

610‧‧‧河川, etc.

612‧‧‧The bottom of the river

700‧‧‧ Heavy equipment

800‧‧‧ plate-like members

900‧‧‧Protection of the outer wall

1000‧‧‧filled flat

1100‧‧‧Filling the site

DL‧‧‧ diagonal

F1‧‧‧ load

F2‧‧‧ force

H1‧‧‧Deep depth (height)

Height of H2‧‧‧ structure (distance L2)

L1‧‧‧Distance from the main connection position to the connection position

L3‧‧‧Rising distance of the main connection position

Θ‧‧‧ angle

Fig. 1 (a) to (c) show the weak site of the embodiment and A schematic diagram of an outline of a construction method of a site having suspicion of liquefaction.

Fig. 2(a) is a schematic cross-sectional view showing a state of a structure after being laid on a weak ground plate by the construction method of the present embodiment. Fig. 2(b) is a schematic cross-sectional view showing a state of a structure after being laid on a weak ground by a conventional construction method.

Fig. 3 is a schematic perspective view showing the configuration of the structural bag of the embodiment.

Fig. 4 (a) to (c) are schematic views showing the action of the structure produced by the structural body bag of the present embodiment.

Fig. 5 (a) to (d) are schematic diagrams showing an example of a specific procedure of the site reinforcing step.

Fig. 6 (a) to (c) are schematic diagrams showing an example of the case of reinforcing a newly generated weak ground.

Fig. 7 (a) to (d) are schematic views showing an example of the procedure of the filling method of the embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Fig. 1 (a) to (c) are schematic diagrams showing an outline of a construction method of a weak site and a site having susceptibility to liquefaction according to the present embodiment. The method for constructing a weak ground plate and a liquefied ground plate according to the present embodiment (hereinafter, simply referred to as a construction method) includes a structure forming step shown in Fig. 1(a), in which the filler 200 is filled. The structural body 300 is formed in the structural bag 100; and the concave shape as shown in FIG. 1(b) a step of forming a concave portion 304 on the bottom surface 302 of the structural body 300; and a ground reinforcing step as shown in FIG. 1(c), wherein the structural body 300 is downloaded to the weak ground plate 400 in a state in which the concave portion 304 is formed. There may be a site 410 (hereinafter, collectively referred to as a weak site 400 or the like) that is liquefied to generate a reinforcing site 500.

In the structure forming step, sand or various waste materials or the like are filled in the structural bag 100 as the filler 200, whereby the structure 300 having the same function as the so-called sandbag is produced. The structure generation step can be performed at the construction site or at another construction site or factory. In addition, as the filler 200, waste sand or waste materials generated at the construction site or other construction site may be used, and the special filler material 200 in which the contents are appropriately blended may be used in accordance with the state of the weak ground plate 400 or the like.

Further, in the present embodiment, the structural bag 100 is made of a material having appropriate water permeability, and as described later, the moisture of the weak ground plate 400 or the like can be gradually absorbed into the structure 300. Appropriate site reaction forces caused by soil particles can be revealed. Moreover, the sand containing a large amount of water which is collected from the weak site 400 or the like can be effectively used as the filler soil 200. In other words, in the present embodiment, waste sand or the like generated from the weak ground plate 400 or the like can be effectively utilized to perform the countermeasure against the weak ground.

In the recess forming step, as shown in FIG. 1(b), a recess 304 in a state in which the center portion is the most concave is formed on the bottom surface 302 of the structure 300. In the present embodiment, by forming the concave portion 304 in this manner, it is possible to improve the stability and the load resistance on the weak ground plate 400 of the structural body 300. Heavy. Further, by forming the concave portion 304, the structural body 300 can be compressed in advance. In other words, the filler 200 can be appropriately compressed and solidified before the structure 300 is laid, and even when sand or the like containing a large amount of water is used as the filler 200, the structure can be appropriately discharged before laying. Water within 300.

In addition, in the present embodiment, in the present embodiment, the structure 300 can be suspended by a crane or the like to form the concave portion 304 on the bottom surface 302 as long as the structure of the structural bag 100 is used. That is, in the present embodiment, the concave portion forming step can be performed when the structural body 300 is transported by a crane or the like.

In the ground reinforcing step, the structure 300 is directly placed (mounted) on the weak ground 400 or the like while the bottom surface 302 is formed with the concave portion 304, whereby the reinforcement can be formed above the weak ground 400 or the like. Site 500. As described above, in the present embodiment, since the concave portion 304 can be formed by suspending the structural body 300, in the ground reinforcing step, the structural body 300 is suspended by a crane or the like and transported to the weak ground plate as in the related art. Above 400, etc., and placed directly above the weak site 400, etc.

The structure 300 placed above the weak ground plate 400 or the like is in a state of being appropriately compressed and solidified by the formation of the concave portion 304. Therefore, after the structural body 300 is placed above the weak ground plate 400 or the like, the soil particles of the weak ground plate 400 and the like enter the concave portion 304. In other words, the structure 300 is maintained in a state in which the concave portion 304 is formed on the bottom surface 302 even after being laid on the weak ground plate 400 or the like.

Fig. 2(a) is a schematic cross-sectional view showing a state in which the structure 300 is laid on the weak ground plate 400 by the construction method of the embodiment, and Fig. 2(b) shows the state in which it is laid by a conventional construction method. A schematic cross-sectional view of the state of the structure body 310 after the weak ground plate 400. As shown in Fig. 2(a), the structure 300 laid on the weak ground plate 400 by the construction method of the present embodiment enters the concave portion 304 by the soil particles of the weak ground plate 400, and becomes the bottom surface other than the concave portion 304. 302 is substantially bitten into the state of the weak ground 400. As a result, the load F1 applied to the structural body 300 from above by gravity or the like can be supported by the convex inclined surface 402 which is formed by the concave portion 304 on the weak ground plate 400. The substantially central portion of the structure 300 serves as a vertex.

Thereby, the load F1 acting in the vertical direction from above the structural body 300 can be converted into a force F2 substantially perpendicular to the inclined surface 402 by the concave portion 304. In this way, the ground reaction force below the structural body 300 can be equalized by the force F2 toward the center side below the structural body 300, and the structural body 300 can be stably supported, so that the structural body 300 can be appropriately prevented as a result. Tilt or move laterally.

Further, since the concave portion 304 has a three-dimensional shape similar to a cone shape or a partial spherical shape, the soil particles entering the concave portion 304 are restrained by the division, and the shearing force does not act on the soil particles in the concave portion 304. And only the state in which the compressive force acts. Thereby, the destruction of the weak ground plate 400 can be effectively prevented. That is, when the damage of the local disc is mainly caused by shear failure, the shear damage can be delimited by the recess 304. The bundle is prevented, so that it is not easy to break whether the weak ground plate 400 is a weak ground.

Further, under the structure 300, the pore water pressure is excessively crushed by the gap between the soil particles, and the pore water pressure is excessive (excess pore water pressure state), but it can be substantially conical or substantially spherical. The recessed portion 304 temporarily divides the excess pore water pressure, so that the excess pore water pressure can be utilized as a reaction force. That is, according to the structural body 300 in which the concave portion 304 is formed, the ground reaction force can be exhibited in a short time after the structural body 300 is laid on the weak ground plate 400.

Further, since the structural bag 100 has appropriate water permeability, the water in the concave portion 304 is restrained, and then gradually absorbed into the structural body 300 as time passes. Therefore, once the pore water pressure rises after the structural body 300 is laid, it gradually decreases with the passage of time, and the original ground reaction force caused by the soil particles appears. Further, since the rigid body of the structural body 300 is different from the concrete and the like, and a certain degree of deformation is allowed to balance, even if a variable load occurs due to, for example, an earthquake or the like, the variable load can be offset. The method is deformed to achieve balance, and the stable site reaction force is continuously exerted.

Further, since the structural body 300 can be appropriately compressed in the direction in which the flat body is deformed by the inclined surface 402, an appropriate tension is generated in the structural body bag 100, and the load resistance originally possessed by the structural body 300 can be exhibited as assumed. Sex (as the load-bearing capacity of sandbags). Further, since the inside of the filler 200 is slid in the direction along the inclined surface 402, an appropriate shear resistance surface can be generated, so that the structure The load resistance of 300 can be further improved.

On the other hand, in the conventional construction method, that is, when the structural body 310 is placed on the weak ground plate 400 without forming the concave portion 304, as shown in Fig. 2(b), the structure cannot be suppressed on the weak ground surface. Since the deformation of 310 is downward, the bottom surface 312 is in a state of being bulged into a convex shape. In this way, the force F2 perpendicular to the bottom surface 312 after the load F1 from the upper side is pushed, the soil particles of the weak ground plate 400 are pushed away, and acts in a direction blocking the flattening of the structure body 310, whereby the bottom surface 312 The bulging will grow even further.

That is, in order to exert the load-bearing property of the structure 310, it is necessary to appropriately compress and flatten the structural body 310 by the load F1 from above to cause the structural body bag 320 to generate an appropriate tension. F2 hinders this. Therefore, in the conventional construction method, the tension of the structural bag 320 cannot be sufficiently ensured, and the structure 310 cannot exhibit the necessary load resistance.

Further, below the structural body 310, since the soil particles of the weak ground plate 400 slide toward the outer peripheral side of the structural body 310 along the bottom surface 312, the weak ground plate 400 is raised around the structural body 310. As a result, the structural body 310 not only becomes unstable on the weak ground plate 400, but also compresses the structural body 310 toward the inner side due to the raised portion, thereby further reducing the tension of the structural body bag 320, resulting in resistance. The load is further reduced.

Thus, compared with the conventional construction method, the construction method according to the embodiment is not only an extremely simple method but also The reinforcing body 500 having a higher strength (supporting force) is generated by the ability to reliably exert the structure 300 placed on the weak ground plate 400. Further, since the structural body bag 100 is made of a material having appropriate water permeability, the moisture contained in the weak ground plate 400 can be appropriately absorbed and discharged, so that the weak ground plate 400 can be further compacted. As a result, not only can the strength of the reinforcing ground 500 be further increased, but also the moisture in the weak site 400 at the site required for construction can be actively absorbed, and the strength of the site can be increased in advance, so that the structure can be effectively and efficiently prevented. After the setting is set, the situation where the site sinks occurs.

Further, according to the construction method of the present embodiment, even if a liquefaction phenomenon occurs later due to an earthquake or the like, the excess pore water pressure can be divided by the concave portion 304 of the structural body 300 constituting the reinforcing ground 500, and this Use as a roughly uniform support. Further, by having the structural bag 100 have appropriate water permeability, it is possible to appropriately absorb the rising moisture. That is, in the construction method of the present embodiment, not only the weak ground plate 400 but also the structural body 300 in which the concave portion 304 is formed is laid in advance on the relatively hard liquefied ground 410 to generate the reinforcing ground 500. This can appropriately protect the piles, structures, and the like on the reinforcing ground 500 from the damage caused by the subsequent liquefaction phenomenon.

Further, the depth (height) H1 of the concave portion 304 formed in the bottom surface 302 of the structural body 300 in the concave portion forming step is not particularly limited as long as the concave portion 304 having a certain depth is formed to the height H2 of the structural body 300. In other words, the recessed portion 304 is naturally deformed in a state in which the structure 300 is laid down in a state of the weak ground plate 400 or the like, thereby becoming weakly The intensity of the disk 400 or the like corresponds to a depth H1.

Specifically, the recessed portion 304 becomes thicker as the weaker land 400 and the like become thicker, and a stronger ground reaction force is exhibited. Therefore, in the construction method of the present embodiment, the weak ground plate is not affected. The state of the 400 is affected, but the required site reaction force will appear almost automatically. Further, in the case where the structure 300 is laid on the site 410 having the susceptibility of liquefaction, smooth sand or the like may be laid on the site 410 having susceptibility to liquefaction as needed, thereby maintaining the liquefaction phenomenon after consideration of the subsequent liquefaction. A suitably sized recess 304.

Further, the method of forming the concave portion 304 is not particularly limited, and may be performed by placing the structural body 300 above a projection such as a conical or hemispherical shape, or by suspending the structural body 300. get on. Further, a frame or the like in a state in which the concave portion 304 is formed inside or outside the structural bag 100 may be provided.

Further, the shape of the structure 300 is not particularly limited, and may be any shape as long as it can form the concave portion 304 on the lower side. However, in order to lay the plurality of structures 300 without a gap, it is preferably a rectangular parallelepiped shape (four Corner column) or hexagonal column. In addition, the water permeability of the structural bag 100 is not particularly limited, and may be appropriately set according to the amount of water contained in the weak ground plate 400 or the size of the particles of the filler 200, the possibility of a liquid phenomenon later, and the like. .

Further, in the first embodiment (c), an example in which only one layer of the structure 300 is laid over the weak ground plate 400 or the like is shown. However, it is also possible to lay a plurality of structural bodies 300 above the weak ground plate 400 or the like. (Stacking the structure 300). Further, although it is not always necessary to form the concave portion 304 in the structural body 300 placed on the structural body 300, for example, sand or the like may be laid on the structural body 300, and a structure in which the concave portion 304 is formed may be placed thereon. Body 300. Further, of course, an appropriate plate-like member such as a paving iron plate may be placed on the structural body 300.

Next, the details of the structural body bag 100 will be described. Fig. 3 is a schematic perspective view showing the configuration of the structural bag 100 of the present embodiment. As shown in FIG. 3, the structural bag 100 is formed into a bag having a substantially rectangular parallelepiped shape, and includes a bottom portion 110 having a substantially square shape, which constitutes a bottom surface 302 of the structural body 300, and a side surface portion 120. It is protruded upward from the outer peripheral end 112 of the bottom surface portion 110; and two inner lid portions 130 and two outer lid portions 140 extending from the upper end 122 of the side surface portion 120; and a suspension body 150 It is connected to the inner side surface 114 of the bottom surface portion 110. Further, a pair of hook-and-loop fasteners 160a and 160b are provided at two outer portions of the outer surface 132 of the inner lid portion 130 and the outer surface 142 of the outer lid portion 140. Further, in the outer lid portion 140, an insertion groove 144 for inserting the suspension body 150 is provided.

That is, after the structural material bag 100 is placed inside the bottom surface portion 110 and the side surface portion 120, the two inner lid portions 130 are folded inwardly and fixed by a pair of fasteners 160a, 160b, and When the two outer lid portions 140 are folded inward and the suspension body 150 is inserted into the insertion groove 144, the structure 300 can be formed by being fixed by the pair of hooks 160a and 160b. Further, the structural bag 100 is made of a natural fiber such as hemp or a woven fabric of synthetic fibers such as polyethylene or polypropylene, and has Proper water permeability.

The suspension body 150 includes a substantially belt-shaped main member 152 having a one end connected to a substantially central main connection position 114a of the inner side surface 114 of the bottom surface portion 110, and four substantially auxiliary members 154 having a strip shape. One end is connected to the auxiliary connection position 114b provided on the diagonal DL in the inner side surface 114 of the bottom surface portion 110, and the other end is connected to the joint position 152a provided on the main member 152. Then, at the other end (front end) of the main member 152, a ring 156 for hooking a hook of a crane or the like is provided, and in a state where the structural body 300 is formed, the ring is inserted through the insertion groove 144. 156 is exposed to the outside. Therefore, the suspension body 150 is connected only to the bottom surface portion 110, and is not connected to the side surface portion 120, the inner lid portion 130, the outer lid portion 140, and the like.

In other words, when the structural body bag 100 is suspended by the suspension body 150 connected to the bottom surface portion 110, the bottom surface portion 110 is stretched upward with the center main connection position 114a as a center. A recess 304 can be formed. Further, while the concave portion 304 is formed, the inner filler 200 is appropriately compressed and solidified. Further, in the present embodiment, the concave portion 304 having a desired depth can be surely formed by adjusting the distance between the main connection position 114a and the connection position 152a.

4(a) to 4(c) are schematic views showing the action of the structure 300 produced by the structural bag 100 of the present embodiment, and showing the diagonal line DL along the bottom surface portion 110 of the structural bag 100. Profile. As shown in FIG. 4(a), the distance L1 along the main member 152 from the main connection position 114a to the connection position 152a is the same as that from the bottom surface portion 110. The distance between the outer peripheral end 112 (i.e., the lower end of the side surface portion) to the side surface portion 120 of the upper end portion 122 of the side surface portion 120 is set to be as short as possible. In other words, the distance L1 is set to be as short as possible as compared with the height H2 of the structure 300.

As a result, as shown in FIG. 4(b), the recessed portion 304 can be actively formed by stretching the suspension body 150 upward. That is, in the case where the suspension body 150 is stretched upward, the auxiliary member 154 is not brought into contact with the inner lid portion 130 and the outer lid portion 140 (i.e., the upper surface of the structure body 300), and the main joint position can be sufficiently ensured. The rising distance L3 of 114a (i.e., the depth H1 of the recess 304). As a result, the inner lid portion 130 and the outer lid portion 140 can be pulled up together with the bottom surface portion 110 by the auxiliary member 154, so that the recess portion 304 having a desired size can be reliably formed.

Further, since only the bottom surface portion 110 can be pulled upward by the suspension body 150, as shown in Fig. 4(c), the inner filler 200 can be compressed and solidified in the substantially vertical direction. Further, since the angle θ formed by the auxiliary member 154 and the bottom surface portion 110 can be reduced by shortening the distance L1, it is possible to appropriately generate the bottom portion 110 together with the auxiliary member 154 when the suspension body 150 is pulled upward. The tension. As a result, since the side surface portion 120 can be pulled toward the center portion by the auxiliary member 154, and a part of the compressive force from the side surface portion 120 is received by the bottom surface portion 110 constituting the concave portion 304, the filler 200 can be oriented substantially. Compressed and solidified in the horizontal direction.

In other words, according to the structural bag 100 of the present embodiment, the inner covering member 200 can be reliably and efficiently compressed and solidified by being suspended by the suspension body 150. And even by being fully compressed In the case of the filler material 200 in the interior, when the filler 200 contains a large amount of water, the structural bag 100 can be formed by a material having water permeability, and only the suspension can be suspended to easily extrude moisture.

As described above, according to the structural bag 100 of the present embodiment, the recessed portion 304 can be efficiently formed on the bottom surface 302 of the structural body 300 by being squeezed by the filler 200, and can be compressed by the filler 200. And solidified, and the structure 300 is laid in a state of having sufficient load resistance. In addition, since the moisture contained in the filler 200 can be sufficiently discharged before the laying, the sand can be effectively used as the filler 200 even in the case of sand containing a large amount of water. In other words, according to the structural body bag 100 of the present embodiment, the reinforcing ground plate 500 having high strength and stability can be produced extremely easily and efficiently.

Further, when the distance L between the main connection position 114a and the connection position 152a is such that the structure 300 is suspended by the suspension body 150, the connection position 152a is not in contact with the inner lid portion 130 and the outer lid portion 140. The distance is not particularly limited, and may be appropriately set in accordance with the strength of the main member 152, the auxiliary member 154, and the bottom portion 110, the width of the bottom portion 110, the state of the filler 200, and the like. However, in order to reliably form the recess 304 of an appropriate size, the distance L1 is preferably at least 50% or less of the distance L2 (the height H2 of the structure 300), more preferably 30% or less, and most preferably 15% or less. Further, depending on the case, the main connection position 114a and the connection position 152a may be made uniform, and the distance L1 may be set to zero.

Further, the number of the auxiliary members 154 is not limited to four, and may be three or more. Also, the auxiliary connection position 114b is not limited to the diagonal line DL of the bottom surface portion 110, and may be disposed at other positions in accordance with the shape of the structural body bag 100 or the number of the auxiliary members 154. Further, the distance between the main connection position 114a and the auxiliary connection position 114b is not particularly limited, and may be appropriately set in accordance with the width of the bottom portion 110 or the like.

Further, the material of the suspension body 150 (the main member 152 and the auxiliary member 154) is not particularly limited, and may be composed of, for example, a metal wire or the like in addition to a belt or a rope composed of the above-described natural fiber or synthetic fiber. Main member 152 and auxiliary member 154. Similarly, the material of the bottom surface portion 110, the side surface portion 120, the inner lid portion 130, and the outer lid portion 140 is not particularly limited. Of course, a mesh or woven fabric made of metal may be used.

Second, the details of the site reinforcement step will be explained. Fig. 5 (a) to (d) are schematic diagrams showing an example of a specific procedure of the site reinforcing step. As described above, in the ground reinforcing step, the structural body 300 in which the concave portion 304 is formed on the bottom surface 302 is laid on the weak ground plate 400 or the ground 410 having the liquefaction problem, thereby generating the reinforcing ground plate 500. However, in the present embodiment, In this case, the reinforcing ground plate 500 thus generated is used as a platform for work in order, whereby the reinforcing ground plate 500 is gradually enlarged.

Specifically, as shown in FIG. 5( a ), the structure 300 in which the concave portion 304 is formed is laid over the weak ground 400 or the like by the heavy equipment 700 such as a crane disposed on the common ground plate 600 . Then, if a reinforcing ground plate capable of feeding the weight of the heavy equipment 700 is generated, 500, as shown in FIG. 5(b), the heavy tool 700 is placed on the generated reinforcing ground 500, and the heavy machine 700 is laid over the previous weak ground 400 of the reinforcing ground 500 or the like to form a recess. Structure 300 of 304.

In this manner, the generated reinforcing ground 500 is sequentially used as a platform into which the heavy equipment 700 can be driven, whereby the reinforcing ground 500 can be efficiently expanded. In particular, in the present embodiment, since the reinforcing body 500 having high strength and stability can be formed extremely easily by the structure 300 in which the concave portion 304 is formed, the reinforcing ground plate 500 can be rapidly expanded without any prior art.

Further, as shown in Fig. 5(c), after the plate-like member 800 such as a slab is laid over the laid structure 300, as shown in Fig. 5(d), the heavy tool 700 can be driven. . By laying the plate-shaped member 800 on the structural body 300, there is a case where the structural body 300 can be appropriately protected from the damage of the crawler belt or the wheel of the heavy implement 700, and the trafficability of the heavy implement 700 can be improved. . Further, although not shown, a sand or stone or the like may be laid on the structure 300 instead of the plate member 800, and the plate member 800 may be laid after sand or stones are laid.

Further, the reinforcing ground plate 500 generated by the site reinforcing step may be permanently used by placing a pile of soil, a structure, or the like on the upper portion in a later step, or may be used as a hypothetical road or the like in a short period of time. In the construction method of the present embodiment, since the reinforcing ground 500 is produced by the laying of the structural body 300, the reinforcing ground 500 can be quickly performed. Removal.

Further, the configuration of the plate member 800 is not particularly limited, and any known members can be used as long as it can be placed on the structure 300. Further, the plate member 800 may be configured by bundling a plurality of rod members. Further, in the fifth (a) to (d) of FIG. 5, although the structure in which only one layer of the structure 300 is laid is shown, it is needless to say that the structure 300 may be stacked in a plurality of layers, or may be changed depending on the place. The number of layers of the structure 300.

Fig. 6 (a) to (c) are schematic diagrams showing an example of a case where the newly generated weak ground 420 is reinforced. In the site reinforcing step, the reinforcing ground 500 is not formed only on the weak ground 400 that has existed beforehand, but the reinforcing ground 500 may be generated on the weak ground 420 newly formed during construction. For example, as shown in Fig. 6(a), it is also possible to excavate (or dredge) the sand of the bottom 612 of the river 610 (i.e., river, lake, or sea) 610 and build it near the shore of the river 610. The new weak ground plate 420, and then, as shown in Fig. 6(b), the structural body 300 in which the concave portion 304 is formed is laid on the new weak ground plate 420 to generate the reinforcing ground plate 500.

According to the construction method of the present embodiment, since the concave portion 304 is formed in the structural body 300, the structural body 300 can be stably disposed to form the reinforcing ground plate 500 even in the new weak ground plate 420 including such a large amount of water, so that the reinforcing ground plate 500 can be formed. The reinforcing ground 500 is produced using sand or the like of the bottom 612 of the river 610 or the like.

Further, as shown in Fig. 6(c), even if there is a weak site 400 in a wide area around the river 610 or the like, it is possible to As shown in Fig. 5 (a) to (d), the heavy equipment 700 is gradually moved toward the bank of the river or the like, and the heavy equipment 700 is placed at a position close to the shore. Therefore, the underwater 612 is excavated, piled up, etc. by the heavy implement 700 disposed on the reinforcing ground 500 to generate a new weak ground 420, and the structural body 300 in which the concave portion 304 is formed is laid thereon, whereby The reinforcing ground 500 is further expanded toward the river 610 or the like.

As described above, according to the construction method of the present embodiment, it is possible to form the reinforcing ground plate 500 after the sand or the like containing the existing water is formed into the soil without carrying sand or the like from another place. Further, in the construction method of the present embodiment, since the moisture contained in the filler 200 can be appropriately discharged in the concave portion forming step, it is also possible to weaken from the bottom 612 or the periphery in the structure forming step. The sand or the like collected on the site 500 is used as the filler 200. In other words, according to the construction method of the present embodiment, even if the construction is carried out in the vicinity of the river 610 or the like, it is possible to effectively use the existing sand or the like to reinforce the ground, so that the construction can be performed without using sand or the like from other places. Advance quickly and efficiently.

In addition, the plurality of layer structures 300 may be stacked on the new weak ground plate 420, or the plate member 800 may be further laid on the structure 300, or sand or stones may be laid. Moreover, although the illustration is abbreviate|omitted, when the site newly created in construction is a site which has susceptibility of liquefaction, of course, the reinforcement site 500 can also be produced on this site.

Next, the filling method using the construction method of the present embodiment will be described. Fig. 7 (a) to (d) show the embodiment A schematic diagram of an example of the order of the filling method. In addition to the above-described structure forming step, recess forming step, and site reinforcing step, the filling method of the present embodiment further includes an outer wall forming step of filling the weak ground plate 400 or the liquefied ground 410. The flat structure 430 is stacked on the outer periphery of the flat land 430 to form a protective outer wall 900; and a flat material input step is performed in which the flattening material 1000 is put into the filling land 430 to generate a fill-in ground plate 1100.

In the filling method of the present embodiment, first, the structural body 300 is produced in the structural body forming step, and the concave portion 304 is formed on the bottom surface 302 of the structural body 300 in the concave portion generating step. Then, in the site reinforcing step, as shown in FIG. 7(a), the structure 300 in which the concave portion 304 is formed is laid over the weak ground 400 or the like in the filling land 430 to generate the reinforcing ground 500. In addition, the plurality of layer structures 300 may be stacked to form the reinforcing land 500.

Next, in the outer wall forming step, as shown in Fig. 7(b), the structural body 300 is stacked on the outer periphery of the filling land 430 to form a protective outer wall 900 surrounding the filling land 430. That is, on the reinforcing land 500 (structure 300) on the outer periphery of the filling land 430, the structural body 300 is further stacked, thereby forming the protective outer wall 900. Further, in the structural body 300 stacked on the reinforcing ground 500, it is not always necessary to form the concave portion 304. Further, the outer wall 900 may be formed of a plurality of structural bodies 300 in the lateral direction. That is, the structural body 300 may be further stacked on the inner side or the outer side of the structural body 300 constituting the protective outer wall 900 shown in Fig. 7(b).

Next, in the filling flat material input step, as shown in Fig. 7(c), the filling material 1000 is put into the filling land 430, that is, the area surrounded by the protective outer wall 900 to form the filling flat land 1100. With the above sequence, the filling operation is completed. Further, the input flattening material 1000 is not particularly limited, and various types of sand or waste materials can be used as the filling material 1000.

In the filling method of the present embodiment, the flattening material 1000 is placed in the reinforcing ground plate 500 formed of the structural body 300 in which the concave portion 304 is formed, and the area surrounded by the protective outer wall 900 composed of the structural body 300 is The filling operation is performed, so that the filling material 1000 can be appropriately pressed and compacted, and the filling platform 1100 having a high strength can be produced. In other words, the filling of the grounding plate 1100 can be firmly supported by the reinforcing plate 500 having a high strength and stability, and the structure 300 can prevent the filling of the filling material 1000 and the clay of the weak ground plate 400, thereby enabling The leveling material 1000 is appropriately compacted by its own weight.

Further, in the filling method of the present embodiment, since the protective outer wall 900 constituted by the structural body 300 stacked on the reinforcing ground 500 can be used, the filling material 1000 is restrained from moving (sliding) laterally. The ground plate 1100 can be filled and compacted more reliably. Moreover, since the water in the flattening material 1000 can be appropriately absorbed and discharged by appropriately permeable the structure 300, it is possible to perform more precise compaction.

Further, according to the filling method of the present embodiment, even in the case where the liquefaction phenomenon occurs later, the excess pore water can be used as the concave portion 304 of the structural body 300 constituting the reinforcing ground 500. Since it is a substantially uniform supporting force, it is possible to appropriately protect the structure of the leveling grounding plate 1100 and the like from the damage caused by the liquefaction phenomenon.

Further, as shown in Fig. 7(d), in order to more reliably reinforce a place where a structure or the like is provided, for example, after the filling of the flat material, the site reinforcing step may be further performed, thereby filling the ground plate. A reinforcing ground 500 is generated on 1100. In this way, not only can the structure and the like be supported more stably, but also the damage caused by the subsequent liquefaction phenomenon can be more severely protected. In addition, even when the floor 1100 is filled, it is of course possible to stack the plurality of layers 300 to form the reinforcing floor 500.

As described above, the method of constructing the weak ground plate and the liquefied ground in the present embodiment includes a structure forming step of filling the filler 200 in the structural bag 100 to form the structural body 300; a recess forming step of forming a recess 304 in a state where the center portion is the most concave in the bottom surface 302 of the structure 300; and a ground reinforcing step of downloading the structure 300 to the weak ground 400 in a state in which the recess 304 is formed , 420 or a site 410 having liquefaction doubts to generate a reinforcing ground plate 500.

According to this configuration, it is possible to easily and surely perform countermeasures against the weak ground and measures against the liquefaction. Specifically, since the structural body 300 can be placed on the weak ground plates 400 and 420 in a stable manner, and the structural body 300 is appropriately compressed, the load-bearing property originally possessed by the structural body 300 can be easily assumed, so that it can be easily generated. A strong and stable reinforcing floor 500. Moreover, since the concave portion 304 can generate appropriate shear resistance Therefore, the strength of the reinforcing ground 500 can be further improved. Further, since the moisture contained in the filler 200 can be appropriately discharged in the recess forming step, even the sand containing a large amount of water can be used as the filler 200. As a result, since the construction can be efficiently advanced, the construction period can be shortened and the cost can be reduced.

Further, even in the case where liquefaction occurs later due to an earthquake or the like, the excess pore water pressure can be utilized as a substantially uniform supporting force by the concave portion 304 of the structural body 300 constituting the reinforcing ground 500, so that it is possible to The structure or the like provided on the upper portion is appropriately protected from the damage caused by the liquefaction phenomenon.

Further, the structural body bag 100 includes a bottom surface portion 110 that constitutes the bottom surface 302, and a suspension body 150 that is connected to the bottom surface portion 110 from the inside and that is not connected except for the bottom surface portion 110. In the middle, the concave portion 304 is formed by suspending the structural body 300 through the suspension body 150. In this way, the recess forming step can be extremely easily performed without separately providing a special step, so that the construction period can be shortened.

Further, the suspension body 150 includes a main member 152 having a one end connected to a substantially central main connection position 114a of the bottom surface portion 110, and an auxiliary member 154 having one end connected to the main connection of the bottom surface portion 110. The position 114a is further connected to the auxiliary connection position 114b on the outer circumference side, and the other end is connected to the connection position 152a in the main member 152, and the distance L1 from the main connection position 114a to the connection position 152a is set to the height H2 of the structure 300. Less than 50%. By Therefore, although it is an extremely simple method of suspending only, it is possible to reliably form the concave portion 304 of a desired depth and range.

Further, the structural bag 100 preferably has water permeability. By doing so, the filler 200 containing a large amount of moisture can be appropriately dehydrated in the recess forming step, and the moisture of the weak ground plates 400, 420 or the ground 410 having the liquefaction suspect can be appropriately absorbed and discharged.

Further, in the structure forming step, the filler 200 collected from the weak ground plates 400 and 420 or the liquefied ground 410 may be filled in the structural bag 100. In this way, it is possible to effectively utilize the sand and the like which are collected from the weak ground plates 400 and 420 or the site 410 having the liquefaction problem, and the construction is efficiently advanced.

Further, in the recess forming step, the recess 304 may be formed by compressing the structure 300, and the moisture contained in the filler 200 may be discharged. In this way, even if it is sand or the like containing a large amount of water, it can be used as the filler 200, so that the construction can be efficiently advanced.

Further, in the site reinforcing step, the reinforcing ground 500 is gradually enlarged by the heavy equipment 700 disposed on the reinforcing ground 500. As a result, the reinforcing ground 500 can be rapidly expanded, so that the construction can be efficiently advanced.

Further, in the site reinforcing step, the plate member 800 may be placed on the structural body 300 placed on the weak ground plates 400, 420 or the liquefied substrate 410 to generate the reinforcing ground plate 500, and may be placed thereon. Structure on weak site 400, 420 or site 410 having liquefaction concerns Sand or stones are laid over the body 300 to create a reinforcing floor 500. As a result, the structural body 300 can be appropriately protected, and the necessary walking property can be easily ensured.

Further, the filling method of the present embodiment is a filling method using a construction method of a weak ground plate and a liquefied ground plate according to the present embodiment, and further comprising: an outer wall forming step of filling the floor 430 is stacked on the outer circumference of the structure 430 to generate the protective outer wall 900; and the flat material input step is to put the filling material 1000 into the filling land 430 to generate the filling flat disk 1100, and in the ground reinforcing step, the structural body 300 is The weak land 400, 420 placed on the filling land 430 or the ground 410 having the liquefaction doubt is downloaded in a state where the concave portion 304 is formed to generate the reinforcing ground plate 500.

With such a configuration, the weak ground plate countermeasure can be easily and surely performed, so that the ground plate 1100 can be reliably pressed and filled together with the weak ground plates 400 and 420 or the ground 410 having the liquefaction problem, and can be filled in. Ground 430 generates a site of high strength and stability. Moreover, since the filling work can be efficiently advanced, the construction period can be shortened and the cost can be reduced. Moreover, even in the case of liquefaction later, it can be prevented from being damaged.

Further, in the outer wall forming step, the structural body 300 is stacked on the reinforcing ground 500 on the outer circumference of the filling land 430 to form the protective outer wall 900. As a result, the strength and stability of the protective outer wall 900 can be improved, and the filling material 1000 can be surely restrained. Therefore, the grounding plate 1100 can be appropriately compacted.

Further, in the filling method of the present embodiment, the ground reinforcing step is performed before the filling of the flat material, whereby the reinforcing ground 500 is produced below the flattening ground 1100. By doing so, it is possible to generate a site of high strength and stability in the filling land 430. Further, by generating the reinforcing ground 500 in advance, the construction can be smoothly advanced.

Further, in the filling method of the embodiment, the reinforcing ground plate 500 may be formed above the leveling grounding plate 1100. In this way, it is possible to support not only the structure or the like on the leveling ground plate 1100 but also the damage caused by the subsequent liquefaction phenomenon.

Further, the structural body bag 100 of the present embodiment is a structural body bag in which the structural body 300 is formed by filling the filler 200 therein, and is characterized in that it includes a bottom surface portion 110 which constitutes the bottom surface 302 of the structural body 300. And the suspension body 150 is connected to the bottom surface portion 110 from the inner side and is not connected except for the bottom surface portion 110. The suspension body 150 is provided with a main member 152 which is connected to the bottom surface portion 110. a central main connection position 114a; and an auxiliary member 154 having one end connected to the auxiliary connection position 114b on the outer peripheral side of the main connection position 114a of the bottom surface portion 110, and the other end connected to the joint position in the main member 152 152a, the distance L1 from the main connection position 114a to the connection position 152a is set to 50% or less of the height H2 of the structure 300.

With such a configuration, it is a very simple method of suspending, but the concave portion 304 having a desired depth and range can be surely formed on the bottom surface 302 of the structural body 300, and suspended. After the structure 300 is placed on the weak ground plates 400 and 420 or the ground 410 having the liquefaction problem, the reinforcing ground plate 500 can be formed. Therefore, it is possible to easily and surely measure the weak ground plate and the liquefaction phenomenon. Moreover, the moisture contained in the filler 200 can be appropriately discharged only by suspending. As a result, since the construction can be efficiently advanced, the construction period can be shortened and the cost can be reduced.

Although the embodiments of the present invention have been described above, the construction method, the filling method, and the structural bag of the weak ground plate or the liquefied ground plate of the present invention are not limited to the above-described embodiments, but are of course Various changes can be made without departing from the spirit and scope of the invention.

For example, the suspension body 150 of the structural bag 100 is not limited to the main member 152 and the auxiliary member 154 shown in the above embodiment, and the concave portion 304 can be formed by hanging. It can also be other components. Further, the suspension body 150 may be connected to the bottom surface portion 110 by hooking a hook or the like to the bottom surface portion 110 of the structural body bag 100. Further, as long as the concave portion 304 can be formed by a configuration other than the suspension body 150, the suspension body 150 can of course be omitted.

Further, the inner lid portion 130 and the outer lid portion 140 of the structural bag 100 may be fixed by a known method other than the fasteners 160a and 160b. Furthermore, the structural bag 100 is not limited to the inner lid portion 130 and the outer lid portion 140, and may be configured such that the bag mouth is tied with a string or the like and closed. Further, the structural bag 100 of a plurality of different sizes or configurations may be separately used in accordance with the placement place or the like.

Further, the actions and effects shown in the above embodiments are merely the most suitable actions and effects produced by the present invention, and the actions and effects of the present invention are not limited thereto.

[Industrial Applicability]

The construction method, the filling method, and the structural bag of the weak ground plate and the liquefied floor of the present invention can be utilized in various constructions.

100‧‧‧Structure body bag

200‧‧‧Filling materials

300‧‧‧ structure

302‧‧‧Bottom of the structure

304‧‧‧ recess

400‧‧‧Weak territory

410‧‧‧ Sites with suspicion of liquefaction

500‧‧‧Reinforcing sites

Claims (14)

A method for constructing a weak ground plate and a liquefied ground, characterized in that it has a structure forming step of filling a filling material in a structural body bag to form a structural body, and a concave portion forming step of the foregoing structure The bottom surface of the body forms a concave portion in a state in which the center portion is the most concave; and the ground reinforcing step is performed by downloading the structure on the weak ground or the liquefied ground in a state in which the concave portion is formed to generate a reinforcing ground. The method for constructing a weak ground plate and a liquefied floor according to the first aspect of the invention, wherein the structural body bag includes a bottom surface portion constituting the bottom surface; and a suspension body from the inner side The bottom surface portion is connected to the bottom surface portion and is not connected except for the bottom surface portion. In the recess portion forming step, the concave portion is formed by suspending the structure through the suspension body. The method for constructing a weak ground plate and a liquefied floor according to the second aspect of the invention, wherein the suspension body includes a main member that is connected to a main connection at a substantially central portion of the bottom surface portion. And an auxiliary member that connects one end to an auxiliary connection position on an outer peripheral side of the main connection position of the bottom surface portion, and connects the other end to a connection position in the main member, The distance from the main connection position to the connection position is set to 50% or less of the height of the structure. The method for constructing a weak ground plate and a liquefied floor according to any one of claims 1 to 3, wherein the structural bag has water permeability. The method for constructing a weak site and a site having susceptibility to liquefaction according to claim 4, wherein in the structure forming step, the filling is performed from the weak ground or the liquefied ground. The material is filled in the aforementioned structural body bag. The method for constructing a weak ground plate and a liquefaction suspected ground according to the fourth aspect of the present invention, wherein in the recess forming step, the concave portion is formed by compressing the structural body, and the filler is formed The water contained in it is discharged. The method for constructing a weak ground plate and a liquefaction-causing ground according to any one of claims 1 to 6, wherein the ground reinforcing step is performed by a heavy machine disposed on the reinforcing ground plate. Gradually expand the aforementioned reinforcing sites. The method for constructing a weak site and a site having susceptibility to liquefaction according to any one of claims 1 to 7, wherein in the step of reinforcing the site, the substrate is placed on the weak site or the liquefaction suspect is present. On the structure body on the ground plate, a plate-shaped member is placed to generate the reinforcing ground plate. The method for constructing a weak site and a site having susceptibility to susceptibility according to any one of claims 1 to 8, wherein In the reinforcing step, sand or stones are laid on the aforementioned structure placed on the aforementioned weak ground or the above-mentioned liquefied ground plate to form the reinforcing land. A method for filling a soft ground plate and a construction method for a liquefied ground plate according to any one of claims 1 to 9 characterized by further comprising: an outer wall generating step, And stacking the structure body to form a protective outer wall on the outside of the filling land; and filling the flat material input step, which is to put the filling material into the filling level to generate a filling land, in the step of reinforcing the ground plate, In the structure in which the concave portion is formed, the weak ground plate placed in the filling place or the liquefied ground plate is downloaded to generate the reinforcing ground plate. The filling method according to claim 10, wherein in the outer wall forming step, the structural body is stacked on the reinforcing ground outside the filling land to form the protective outer wall. The filling method according to claim 10, wherein the reinforcing portion is formed before the filling of the flat material, whereby the reinforcing ground is formed below the flat filling ground. The filling method according to any one of claims 10 to 12, wherein the reinforcing step is performed after the filling of the filling material, and the reinforcing ground is formed above the filling ground. A structural body bag which is produced by filling a filler material inside The structural body bag of the structural body, comprising: a bottom surface portion constituting a bottom surface of the structure body; and a suspension body connected to the bottom surface portion from the inner side and not connected except for the bottom surface portion The suspension body includes a main member that is connected to a main connection position at a substantially central portion of the bottom surface portion, and an auxiliary member that is connected to the main connection position of the bottom surface portion. The auxiliary connection position on the outer circumference side and the other end are connected to the connection position in the main member, and the distance from the main connection position to the connection position is set to 50% or less of the height of the structure.