JP2004068367A - Caisson fill construction method and manufacturing method for caisson structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a caisson fill construction method in which fillers do not flow out even when a crack, a damage or the like is generated in the wall body of a caisson while an underground structure is not floated. <P>SOLUTION: In the caisson fill construction method used for a pneumatic caisson, an open caisson, an installed caisson or the like, there is no possibility of the separation of the fillers even when the crack, the damage or the like is generated in the wall body of the caisson while the underground structure is not floated even when the structure receives groundwater pressure because a ceiling for a workroom for a caisson body 11 is inclined in the fixed direction while mud mortar 20 as the fillers is filled from the outside. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is to sequentially excavate the earth and sand inside a caisson having a cutting edge on the lower end surface, sink the caisson while discharging and reach a predetermined depth, and then fill the caisson itself with a filling material as a basis for the structure Caisson filling method such as a pneumatic caisson to fill the inside of a caisson, an installed caisson used for breakwaters, seawalls, quays, etc. It relates to a manufacturing method.
[0002]
[Prior art]
A conventional caisson filling method will be described for the case of a pneumatic caesson shown in FIGS. First, as shown in FIG. 14, the caisson body 1 is lowered by excavating the working chamber 2 and reaches a predetermined depth, and then the sand or the filling concrete 4 is utilized by using the air lock shaft 3 extending to the working chamber 2. Was cast into the working room 2. FIG. 15 is a cross-sectional view showing a state where the filling of the working chamber by the conventional caisson filling method is completed. As is clear here, the cast-in-place concrete 4 has an upwardly convex shape, and the slab ceiling surface 5 of the work room 2 is horizontal. It is unavoidable that the gap 6 is formed in the space.
[0003]
[Problems to be solved by the invention]
However, in the above-mentioned conventional caisson filling method, when used as an installed caisson for revetment or the like, there is a possibility that the filling sand may flow out if the caisson is damaged by a collision of a ship or the like or an earthquake.
Further, even when the concrete filling 4 or the like is cast, the ceiling of the work room is horizontal, and the filling concrete 4 is filled in a convex shape due to lack of fluidity as shown in FIG. . Therefore, a gap 6 is generated between the curved upper end of the filled concrete 4 and the slab ceiling surface 5.
[0004]
Conventionally, pneumatic caisson and the like have been mainly used for bridge foundations and the like, and emphasis has been placed on supporting a large vertical force. However, as a recent trend, it is also used for underground structures having a large area such as parking lots and pumping stations, and it is necessary to take measures against buoyancy due to groundwater as well as vertical force. In other words, there was a case where the groundwater flowed into the gap between the filling concrete 4 and the caisson main body 1 and caused the caisson main body 1 to float as shown in FIG. Further, in a remarkable case, there is no possibility that the filling concrete 4 is separated from the caisson main body 1, and if such separation occurs, it cannot function as a weight. Further, if the weight of the caisson main body 1 is increased in order to counter the buoyancy of such groundwater, there is a problem that the cost of manufacturing or transporting the caisson rises.
In addition to the pneumatic caisson, in the installation caisson used as a breakwater, etc., it is common to carry a caisson manufactured on land to the installation location by transporting it with a ship or crane, then putting in sand and setting it down. It was a target. In addition, although open caisson used as shafts and bridge foundations was generally filled with sand etc. after completion of excavation, these caissons should be solved in the same way as pneumatic caisson. There were challenges.
[0005]
In order to solve the above problems, the present invention fills a caisson with a hardening filler, and the wall of the caisson does not flow out even if cracks, breakage, etc. occur, and floats even under groundwater pressure The aim is to provide a caisson filling method that does not have any problem.
[0006]
[Means for Solving the Problems]
The present invention relates to a filling method of a caisson used for a pneumatic caisson, an open caisson, an installed caisson, and the like, wherein a space of a caisson body is filled with mud mortar.
[0007]
The space is a space provided with a ceiling slab.
The space is a working room.
[0008]
Further, the present invention is a method of filling a caisson used for a pneumatic caisson, an open caisson, an installed caisson, and the like, wherein a space of a caisson body having an open bottom surface is filled with a curable filler, and A suspension bolt is attached to a ceiling slab or a wall surface, an anchor plate is provided on the suspension bolt, and the suspension bolt is embedded in a filler filled in the space.
[0009]
Further, a crack repair capsule is mixed into the filler.
[0010]
Further, a packing projection for preventing the filler from falling off is provided near the lower end of the space of the caisson body.
[0011]
Further, the space of the caisson main body is provided with a bottom wall for closing a lower end opening.
[0012]
Further, the space of the caisson main body is provided with a water-blocking sheet on the bottom surface, or a water-stop plate that intersects with a contact surface between the filler and the caisson main body and prevents water from entering from the contact surface. Features.
[0013]
Further, the caisson body is characterized in that the inner peripheral surface of the caisson is roughened and a filling sealing material is applied.
[0014]
A caisson filling method for filling a space provided with a ceiling slab with a curable filler, wherein a lower surface of the ceiling slab has a gradient for bleeding air.
[0015]
Further, the lower surface of the ceiling slab is provided with a groove for bleeding air.
[0016]
Further, the filler is mud mortar.
[0017]
Further, the filler is concrete.
[0018]
Further, the present invention is characterized in that a caisson structure is manufactured by using any of the above filling methods.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings, taking a pneumatic caisson as an example. FIG. 1 is a sectional view showing a caisson filling method according to a first embodiment of the present invention. Here, the caisson filling method fills the working chamber 12 of the caisson main body 11 in the pneumatic caisson 10. The lower surface 13a of the ceiling slab 13 of the work room 12 has a gradient toward the filling mortar casting hole 14 formed substantially at the center. In other words, the ceiling slab 13 is formed so that the portion of the filling mortar casting hole 14 is higher and gradually lowers toward the wall surface.
[0020]
A mechanical joint 16 connected to the reinforcing bar of the caisson body 11 is disposed at appropriate intervals on the side of the working chamber 12 near the caisson cutting edge 15 so that the reinforcing bar 17 can be disposed on the bottom surface of the working chamber 12. ing. In the present embodiment, after the subsidence of the pneumatic caisson 10 is completed and before the filling work is performed in the work chamber 12, after the reinforcing bar 17 is connected to the mechanical joint 16 as shown in FIG. Then, concrete is cast to form the bottom wall 18. The mechanical joint 16 is joined by a screw type or other joining means. After the bottom surface of the work chamber 12 is closed by the bottom wall 18 in this manner, a mud mortar 20 for filling is poured from the pipe 19 for placing concrete.
[0021]
In the present embodiment, since the lower surface 13a of the ceiling slab 13 has a slope toward the filling mortar setting hole 14, air is smoothly released when the mud mortar 20 is set. As shown in FIG. 7, the working chamber 12 can be filled with mud mortar 20 without any gap.
[0022]
According to the first embodiment described above, the slope is provided on the lower surface 13a of the ceiling slab 13, so that the air is smoothly vented, and the working chamber 12 can be filled with the mud mortar 20 without any gap. Further, since the mud mortar has a very high fluidity like water, the inside of the working chamber 12 can be completely filled. Therefore, the watertightness between the caisson side wall or the ceiling slab and the mud mortar can be ensured, and the mud mortar 20 can act as a weight with respect to the buoyancy that the caisson body 11 receives by the groundwater. In addition, since the bottom surface of the work chamber 12 is closed by the bottom wall 18, there is no gap between the mud mortar 20 and the caisson main body 11, and there is no possibility that groundwater permeates. Furthermore, the weight of the caisson main body 11 can be reduced by the weight of the filling mortar compared to the conventional technology, and the cost can be reduced. In addition, the excavated soil can be reused, and environmental pollution can be considered during installation work. The soil used for the mud mortar may be generated soil or guest soil. Note that the bottom wall may have a thickness that ensures watertightness against buoyancy.
[0023]
In the above example, the example of filling using mud mortar was described using the working room of the pneumatic caisson, but without being limited to this, the open caisson without the ceiling slab or the working room, the installation caisson The space inside the caisson body can also be padded.
[0024]
FIG. 4 is a cross-sectional view showing a second embodiment of the caisson filling method of the present invention, and FIG. 5 is an explanatory view of the filling support portion for preventing the filler from dropping in place of the bottom wall in the caisson filling method. FIG. 6 is a sectional view showing a state where the filling of the working chamber is completed by the caisson filling method. In the present embodiment, the lower surface 13a of the ceiling slab 13 of the work chamber 12 has a slope toward the filling mortar casting hole 14 formed substantially at the center, similarly to the first embodiment. It is. In other words, the ceiling slab 13 is configured such that the portion of the filling mortar casting hole 14 is higher and gradually lowers toward the wall surface. The gradient is set to be larger than the surface gradient of the concrete or mud mortar to be cast.
[0025]
On the work chamber 12 side near the caisson blade tip 15, mechanical joints 21 connected to the reinforcing bar of the caisson main body 11 are arranged at appropriate intervals as shown in FIG. The mechanical joint 21 can connect the reinforcing bar of the caisson main body 11 and the reinforcing bar 23 forming the filling support portion 22 with a screw or other connecting means. In this embodiment, the section of the middle support portion 22 is formed in a triangular shape. For this reason, the rebar 23 is connected to the inner peripheral surface of the work chamber 12 at a predetermined angle. Further, the filling support portion 22 in the embodiment is formed over the entire circumference of the working chamber 12, but its installation range is, at a position below the filling, protruding inward from the planar shape of the filling, and Any shape that can support the packed mud mortar, mortar, or concrete from below is sufficient.
[0026]
After the filling support 22 is formed near the bottom surface of the working chamber 12 in this manner, the filling mortar 20 is poured from the concrete casting pipe 19. Also in the present embodiment, the lower surface 13a of the ceiling slab 13 of the work chamber 12 has a slope toward the filling mortar casting hole 14, so that when the mud mortar 20 is poured, the air is released smoothly. As shown in FIG. 6, the working chamber 12 can be filled with mud mortar 20 without gaps.
[0027]
According to the above-described second embodiment, the working chamber 12 can be completely filled with the mud mortar 20 having extremely high fluidity. Therefore, even if the caisson main body 11 receives buoyancy by groundwater, the mud mortar 20 can act as a weight. In addition, since the filling support portion 22 is provided on the bottom surface of the work chamber 12, a gap is hardly generated between the filled mud mortar 20 and the caisson main body 11, and there is no possibility that groundwater permeates. Further, even if the groundwater infiltrates, the watertightness can be ensured because the length of the passage is ensured. In addition, the mud mortar is completely filled up to the ceiling slab to ensure watertightness with the ceiling slab, and the mud mortar can function as a weight. Even if groundwater permeates between the caisson body 11 and the mud mortar 20, the padding support portion 22 prevents the mud mortar 20 from dropping off, thereby acting as a weight and preventing the caisson body 11 from rising. can do.
[0028]
FIG. 7 is a sectional view showing a third embodiment of the caisson filling method of the present invention. In the third embodiment, a groove 24 for air release is formed on the lower surface of the ceiling slab 13, and the groove 24 for air release is also used for air release at the center where the filling mortar casting hole 14 is provided. Has a gradient toward the groove 25. The air vent groove 25 is provided at the highest position in the center of the gradient where the hollow mortar casting hole 14 is provided. The air bleeding grooves 24 are formed at substantially equal intervals as shown in FIG. 9, and are arranged orthogonally to the air bleeding grooves 25 and communicate with each other. Although the packing projection 22 is provided on the bottom surface of the work chamber 12, the bottom wall 18 may be formed by casting concrete.
[0029]
According to the above third embodiment, the air bleeding groove 24 is formed on the lower surface of the ceiling slab 13, so that when the mud mortar 20 having a high fluidity is filled into the working chamber 12, the inside of the working chamber 12 is filled. It can be completely filled while bleeding air. Further, at the time of placing the mud mortar, the air is effectively discharged from the air vent groove 24, and the filling operation can be performed smoothly. Furthermore, the filling property and adhesiveness of mud mortar can be improved by the presence of the air vent groove 24. Therefore, the mud mortar 20 can act as a weight by ensuring watertightness against the buoyancy that the caisson body 11 receives by the groundwater.
[0030]
In the above embodiment, an example in which the groove 24 for air release is provided on the lower surface of the ceiling slab 13 has been described. However, the present invention is not limited to this, and a pipe for air discharge may be provided. Even when a nonwoven fabric or the like is provided, air can be collected and released from the concrete casting pipe 19 when the mud mortar is cast. Furthermore, it is necessary to inject these mortars and cement pastes after pouring mud mortar into these air vent grooves, pipes, nonwoven fabrics and the like to make them watertight. In addition, a method of bleeding air by giving a gradient to the ceiling slab and a structure for bleeding air may be individually applied.
[0031]
FIG. 10 is an operation explanatory view showing a fourth embodiment of the caisson filling method. In the fourth embodiment, a water impermeable sheet 26 is provided on the bottom surface of a space (working room) in which the caisson main body 11 is filled. The end of the water-impervious sheet 26 is engaged with a connecting member 27 provided on the inner wall of the caisson blade 15. After arranging the impermeable sheet 26 on the bottom surface of the space to be filled as described above, the mud mortar 20 is cast. Furthermore, the end of the impermeable sheet is attached integrally to the entire circumference of the caisson body.
[0032]
Since the water impermeable sheet 26 is provided on the bottom surface of the work room or the like as described above, it is possible to prevent groundwater from penetrating into the gap between the mud mortar and the caisson side wall or the ceiling slab. Further, it is possible to prevent the occurrence of a gap such as a crack in the mud mortar and the infiltration of groundwater. Therefore, the bottom surface can receive buoyancy of the groundwater, and the poured mud mortar 20 can function as a weight.
Further, as shown in FIG. 11, a water blocking plate 31 may be used. That is, the water stop plate 31 is made of elastic vinyl chloride or the like and provided with plate portions 33 and 34 on both sides of a tube 32 capable of absorbing shrinkage due to a temperature change or the like. The other plate portion 34 is embedded in the caisson body 11 and is embedded in a filler such as mud mortar, or is fused to the impermeable sheet 26 as in the present embodiment. By providing such a water stop plate 31 on the entire circumference of the caisson so as to exist in any of the cross sections shown in FIG. 11, reliable water tightness can be obtained. In addition, since the water stop board is embedded in both the caisson main body and the mud mortar and can shut off the gap between both to ensure water tightness, it is used independently regardless of the presence or absence of the water impervious sheet 26. You may.
[0033]
FIG. 12 is a sectional view showing a fifth embodiment of the caisson filling method of the present invention. In the present embodiment, the contact surface 15a of the caisson blade 15 in the working chamber of the caisson main body 11 is roughened (chipped). After applying the mortar and resin for filling sealing to the roughened portion, the entire working chamber is filled with the mud mortar 20.
[0034]
Next, in the caisson filling method configured as described above, the contact surface 15a between the mud mortar 20 to be cast and the caisson main body 11 is roughened and the filling sealing material is applied, so that the adhesive force is improved. . In addition, since the boundary between the filling and the caisson main body 11 becomes large due to the presence of the roughening, the permeation of groundwater can be prevented through this boundary. Therefore, the infiltration of the groundwater can be prevented, and the filled mud mortar 20 can function as a weight to prevent the caisson from rising. By providing this roughening in any cross section other than the cross section shown in FIG. 12 (providing the entire circumference), it is possible to obtain reliable watertightness.
[0035]
FIG. 13 is a sectional view showing a sixth embodiment of the caisson filling method of the present invention. In the sixth embodiment, a suspension bolt 28 is mounted on the ceiling slab 13 or the inner peripheral wall surface 12a of the working chamber 12 of the pneumatic caisson, and an anchor plate 29 is provided on the suspension bolt 28. The suspension bolt 28 is screwed to an anchor 30 buried in the lower surface of the ceiling slab 13 or is engaged by other mechanical means. Further, the suspension bolt 28 can be made to have a predetermined length by adding. A plurality of anchor plates 29 are attached to the suspension bolts 28, and two anchor plates 29 are attached in the sixth embodiment. The anchor plate 29 has a predetermined area and can hold mortar cast around.
[0036]
As described above, the mud mortar 20 is cast into the work room 12 to which the suspension bolt 28 and the anchor plate 29 are attached. In this case, since the poured mud mortar 20 is integrated with the caisson main body 11, even when groundwater intrudes from the boundary surface between the mud mortar underground 20 and the caisson main body 11, the caisson has buoyancy. There is no danger of floating. Moreover, the strength of the mud mortar 20 cast by the hanging bolt 28 and the anchor plate 29 acting in the same manner as a reinforcing bar or the like can be increased. In addition, this embodiment can be used for another open caisson without the ceiling slab 13 by attaching the suspension bolt 28 to the inner peripheral wall surface of the caisson main body. Further, a method of arranging reinforcing bars and integrating them with the side wall may be adopted.
[0037]
It should be noted that, in the mud mortar or the like used for the filling, a material in which a material that senses the spread of cracks due to cracks or a material that hardens by touching water is encapsulated is mixed, and the capsule is filled when cracking of the filling material. May be destroyed, and the hardening material is hardened to seal the crack.
Further, in the above embodiment, the case where mud mortar is used for filling is described, but the technique of the present invention can be applied to the case where mortar or concrete is cast as filling. is there.
[0038]
【The invention's effect】
As described above, the caisson filling method of the present invention is a caisson filling method used for a pneumatic caisson, an open caisson, an installed caisson, and the like. Since it becomes a solid, there is no danger that the filler will flow out even if it is damaged by a collision of a ship or an earthquake.
[0039]
In addition, since the space is a space provided with a ceiling slab, the mud mortar is reliably filled, so that the supporting force of the ceiling slab can be reliably transmitted to the bottom.
[0040]
In addition, since the space is a working room, the caisson filling in the working room can be filled with mud mortar having high adhesion without gaps. In addition, the supporting force of the ceiling slab can be reliably transmitted to the bottom. In addition, the weight of the caisson body can be reduced by the weight of the hollow mortar, which is economical.
[0041]
Further, the present invention is a method of filling a caisson used for a pneumatic caisson, an open caisson, an installed caisson, and the like, in which a curable filler is used as a weight in a space of the caisson body having an open bottom, so that a caisson is used. Buoyancy acting on the main body can be reduced.
[0042]
In addition, a structure for hanging, for example, a bolt, is attached to the ceiling slab or wall surface of the space, and an anchor plate is provided on the hanging bolt, and the suspension is cured together with the filler filled in the space, so that the suspension is cast. The filler hardens together with the suspension bolt and the anchor plate and becomes integral with the caisson body. Therefore, it acts as a weight and can counteract buoyancy due to groundwater. Further, the weight of the caisson body can be reduced.
In addition, since the space of the caisson body is filled with a hardening filler and a capsule for repairing cracks is embedded, even if cracks occur, the capsules for repairing cracks are broken and the repair agent flows out automatically. Cracks can be repaired.
[0043]
Further, since a packing projection for preventing the filler from falling off is provided near the lower end of the space of the caisson body, the filled filler can be prevented from falling off and function as a weight. Further, the packing protrusion secures the length of the permeation path of the groundwater, so that the groundwater can be prevented from entering between the filler and the caisson body.
[0044]
Further, since the space of the caisson body is provided with a bottom wall that closes the lower end opening, it prevents groundwater and the like from entering, and the filler filled in the working chamber acts as a weight, and the caisson body is It can be prevented from floating.
[0045]
In addition, since the water stop plate is attached, it is possible to prevent groundwater from entering the gap between the caisson side wall and the filler, and to maintain the function as a weight.
Further, since the space of the caisson body is provided with a water-impervious sheet on the bottom surface, even if cracks occur in the filler after filling the space with the filler, groundwater and the like are blocked by the water-impervious sheet, Serves as a weight and can prevent the caisson body from floating.
[0046]
In addition, since the inner peripheral contact surface of the caisson body is roughened and a sealing material is applied, it prevents the inflow of groundwater and the like, and the filling material filled in the working chamber is separated and falls. Since the caisson body works as a weight, the caisson body can be prevented from floating.
[0047]
Further, the present invention is a caisson filling method for filling a space having a ceiling slab with a curable filler, and the lower surface of the ceiling slab has a gradient for bleeding air. In this case, the air can be smoothly discharged, and there is no possibility that the air is taken into the filler, and the filler can be poured without gaps. Therefore, the watertightness of the ceiling slab and the filler is ensured, and the action as a weight can be ensured.
[0048]
Also, since the lower surface of the ceiling slab is provided with a groove for bleeding air, it is possible to smoothly discharge air when casting the filling material, and there is no danger of air being taken into the filling material. Filling material can be cast without voids. Therefore, the watertightness of the ceiling slab and the filler is ensured, and the action as a weight can be ensured.
Further, since the present invention is used in a work room of a pneumatic caisson, the filler can be effectively used as a weight.
[0049]
Further, since the filler is a mud mortar, it has high fluidity and can be filled without leaking to every corner of the working chamber. In particular, even a closed space can be filled to every corner.
[0050]
Further, since the filler is concrete, it is possible to fill the caisson body more firmly.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a filling method of a pneumatic caisson according to a first embodiment of the present invention.
FIG. 2 is an explanatory view showing an example of installation of a bottom wall in the caisson filling method.
FIG. 3 is a cross-sectional view showing a state where the filling of the working chamber is completed by the caisson filling method.
FIG. 4 is a sectional view showing a second embodiment of the caisson filling method of the present invention.
FIG. 5 is a sectional view of an essential part for explaining a packing projection for preventing a filler from falling off in the caisson filling method.
FIG. 6 is a cross-sectional view showing a state where the filling of the working chamber is completed by the caisson filling method.
FIG. 7 is a sectional view showing a third embodiment of the caisson filling method of the present invention.
FIG. 8 is a sectional view taken along line AA of FIG. 5;
FIG. 9 is a sectional view taken along line BB of FIG. 5;
FIG. 10 is a sectional view showing a fourth embodiment of the caisson filling method.
FIG. 11 is a sectional view showing a case where a water stop plate is used in combination with the fourth embodiment.
FIG. 12 is a sectional view showing a fifth embodiment of the caisson filling method.
FIG. 13 is a sectional view showing a sixth embodiment of the caisson filling method.
FIG. 14 is a sectional view showing a conventional example of the caisson filling method.
FIG. 15 is a cross-sectional view showing a state where the filling of the work chamber by the caisson filling method is completed.
FIG. 16 is an explanatory view showing a floating state of a caisson main body by a conventional caisson filling method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Pneumatic caisson 11 Caisson main body 12 Work room 13 Ceiling slab 14 Filling mortar casting hole 15 Caisson cutting edge 16 Mechanical joint 17 Reinforcing bar 18 Bottom wall 19 Concrete casting pipe 20 Mud mortar

Claims (12)

A caisson filling method used for pneumatic caisson, open caisson, installed caisson, etc.
A caisson filling method characterized by filling mud mortar into the caisson body space. The caisson filling method according to claim 1, wherein the space is a space provided with a ceiling slab. The caisson filling method according to claim 1 or 2, wherein the space is a working room of a pneumatic caisson. A caisson filling method used for pneumatic caisson, open caisson, installed caisson, etc.
Filling the space of the caisson body with an open bottom with a hardening filler, it is used as a structure to increase the weight of the caisson body,
A caisson filling method, wherein a suspension bolt is attached to a ceiling slab or a wall surface of the space, an anchor plate is provided on the suspension bolt, and the suspension bolt is embedded in a filler filled in the space. A caisson filling method used for pneumatic caisson, open caisson, installed caisson, etc.
Filling the space of the caisson body with an open bottom with a hardening filler, it is used as a structure to increase the weight of the caisson body,
A caisson filling method, characterized in that a self-filling type capsule for repairing cracks, which reacts and hardens due to cracks in the filler, is mixed in the filler. A caisson filling method used for pneumatic caisson, open caisson, installed caisson, etc.
Filling the space of the caisson body with an open bottom with a hardening filler, it is used as a structure to increase the weight of the caisson body,
A caisson filling method comprising: a packing projection for preventing the filler from falling off in the vicinity of the lower end of the space of the caisson body. A caisson filling method used for pneumatic caisson, open caisson, installed caisson, etc.
Filling the space of the caisson body with an open bottom with a hardening filler, it is used as a structure to increase the weight of the caisson body,
A caisson filling method, wherein the space of the caisson main body is provided with a bottom wall closing a lower end opening. A caisson filling method used for pneumatic caisson, open caisson, installed caisson, etc.
Filling the space of the caisson body with an open bottom with a hardening filler, it is used as a structure to increase the weight of the caisson body,
A caisson filling method, wherein the space of the caisson body is provided with a waterproof sheet on the bottom surface. A caisson filling method used for pneumatic caisson, open caisson, installed caisson, etc.
Filling the space of the caisson body with an open bottom with a hardening filler, it is used as a structure to increase the weight of the caisson body,
A caisson filling method, comprising: a water stop plate intersecting a contact surface between the filler and the caisson body to prevent water from entering the contact surface. A caisson filling method used for pneumatic caisson, open caisson, installed caisson, etc.
Filling the space of the caisson body with an open bottom with a hardening filler, it is used as a structure to increase the weight of the caisson body,
A caisson filling method, characterized by roughening an inner circumferential contact surface of the caisson body and applying a filling sealing material. A caisson filling method that fills a space with a ceiling slab with a curable filler,
The caisson filling method, wherein a lower surface of the ceiling slab has a slope for bleeding air. A method for producing a caisson structure, comprising filling the caisson using the caisson filling method according to claim 1.

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