JP2013076313A - Water cut-off structure and water cut-off method between members - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water cut-off structure and a water cut-off method between members in which water cut-off between neighboring members can be performed surely.SOLUTION: A member line 10A is formed by providing in parallel a plurality of members such as steel pipe piles 10 or concrete-based pile materials, and a tubular elastic body 1a which is formed long in a length direction of the member 10 and includes a hollow part 2 is buried in a clearance S between the members 10. The tubular elastic body 1a is elastically deformed to expand the diameter by press-filling the hollow part 2 with fillers 3 and stuck to the neighboring members 10, 10. Thus, even if such various events occur that the clearance between neighboring members becomes non-uniform, the tubular elastic body buried in the clearance between neighboring members can be stuck to the neighboring members.

Description

  The present invention relates to a water stop structure and a water stop method between members such as steel pipe pile rows and concrete pile rows constituting structures such as earth retaining walls, revetments, and foundations of buildings.

  Conventionally, there is a technology for constructing structures such as retaining walls, revetments, foundations of buildings, etc. by forming a plurality of steel pipe piles and concrete piles that are not provided with joints on the outer peripheral surface in parallel. Are known. And, when a plurality of members are arranged side by side in this way, a sealant using a water-expandable material is inserted between adjacent members, or a solidifying material such as mortar is filled, Further, as described in Patent Document 1, water stopping is performed by disposing a blocking steel material in a gap between adjacent members.

Japanese Patent Laid-Open No. 5-12928

However, for example, when a sealing material using a water-expandable material is used for revetment, there is a concern about durability when the sealing material is repeatedly immersed in water or dried due to fluctuations in the water level. In addition, in the case of solidified material such as mortar filled between adjacent members, it is diluted with ground water during filling, leaks from a slight gap and causes material loss, and further, the member is displaced after hardening. There is a concern that the water stop effect will be reduced. In addition, when a closing steel material is placed in the gap between adjacent members, the gap between adjacent members is not good due to variations in the embedment accuracy of the members, construction errors, unevenness of the member surface, poor installation of the closing steel material, etc. There is concern about becoming uniform.
Therefore, there is a demand for reliably stopping the water regardless of various events in which the gaps between adjacent members are not uniform.

  The subject of this invention aims at providing the water stop structure between the members and the water stop method which can perform the water stop between adjacent members reliably.

Invention of Claim 1 is a water stop structure between members, and a member row is formed by arranging a plurality of members such as a steel pipe pile and a concrete pile material,
In the gap between the members, a cylindrical elastic body is embedded in the length direction of the member and has a hollow portion,
The cylindrical elastic body is elastically expanded and deformed by pressurizing and filling the hollow portion with a filler, and is in close contact with the adjacent member.

  According to a second aspect of the present invention, in the water-stopping structure between the members according to the first aspect, one end of both ends in the length direction of the cylindrical elastic body is opened to serve as a filling port for the filler. And the other end is closed.

  According to a third aspect of the present invention, in the water stop structure between the members according to the first or second aspect, a plurality of outer peripheral surfaces of the cylindrical elastic body are in contact with a plurality of adjacent members. The protrusions are integrally formed with a space therebetween.

Invention of Claim 4 is a water stop structure between members, and a member row is formed by arranging a plurality of members, such as a steel pipe pile and a concrete pile material,
In the gap between adjacent members, a water-stop material formed in the length direction of the member is embedded,
The water stop material is a pile body,
A cylindrical elastic body having a hollow portion while being held at a position in contact with one and the other of the adjacent members of the outer peripheral surface of the pile body,
The cylindrical elastic body is elastically enlarged and deformed by pressurizing and filling the hollow portion with a filler, and is in close contact with one and the other of the adjacent members.

  The invention according to claim 5 is the water stop structure between the members according to claim 4, wherein the cylindrical elastic body is held on the outer peripheral surface of the pile body along the axial direction of the pile body. For this purpose, a concave groove is formed.

Invention of Claim 6 is the water stop method between members, Comprising: Forming a member row by arranging a plurality of members, such as a steel pipe pile and a concrete pile material,
Embedded in the gap between the members is a cylindrical elastic body that is formed long in the length direction of the member and has a hollow portion,
The cylindrical elastic body is elastically expanded and deformed by pressurizing and filling the hollow portion with a filler, and is brought into close contact with the adjacent member, and the filler is pressurized and held to solidify. It is characterized by that.

The invention according to claim 7 is a water stop method between members, and by arranging a plurality of members such as steel pipe piles and concrete pile members, a member row is formed in the soil or in water,
Among the gaps between the members, on the one side with the center line of the member row as a boundary, a cylindrical elastic body that is formed long in the length direction of the members and has a hollow portion is embedded,
The cylindrical elastic body is elastically expanded and deformed by pressurizing and filling water into the hollow portion, and is in close contact with the adjacent member,
Removing soil or water on the other side of the center line of the member row;
Thereafter, the water in the hollow portion is replaced with a predetermined filler while the cylindrical elastic body is in close contact with the adjacent member.

Invention of Claim 8 is a water stop method between members, and forms a member row by arranging a plurality of members, such as a steel pipe pile and a concrete pile material,
It is formed in the gap between adjacent members so as to be long in the length direction of the member, and is held at a position where the pile body and the outer peripheral surface of the pile body are in contact with one or the other of the adjacent members. Embedded with a water-stopping material comprising a cylindrical elastic body having a hollow portion,
The cylindrical elastic body is elastically expanded and deformed by pressurizing and filling the hollow portion with a filler, and is in close contact with one and the other of the adjacent members, and the filler is pressurized and held. It is characterized by doing.

  According to the present invention, there is no gap between adjacent members, such as unevenness in the embedding accuracy of members such as steel pipe piles and concrete pile members, construction errors, unevenness of the surface of the member, poor installation of the steel material for blocking, etc. Even if various events occur that are uniform, the cylindrical elastic body embedded in the gap between the adjacent members can be brought into close contact with the adjacent members. As a result, for example, gaps between adjacent members of a member row constituting a structure such as a retaining wall, a revetment, or a building foundation can be reliably closed, so that the gaps between these adjacent members are not uniform. Water can be reliably stopped regardless of various events.

BRIEF DESCRIPTION OF THE DRAWINGS It is an example of the cylindrical elastic body used for the water stop structure between the members based on this invention, (a) is sectional drawing which shows before diameter expansion deformation, (b) is sectional drawing after diameter expansion deformation. is there. The arrow indicates the pressing direction. It is another example of the cylindrical elastic body used for the water stop structure between the members based on this invention, (a) is sectional drawing which shows before diameter expansion deformation, (b) is a cross section after diameter expansion deformation FIG. The arrow indicates the pressing direction. It is an example of the water stop structure between the members which concern on this invention, (a) is sectional drawing which shows the state before water stop, (b) is sectional drawing which shows the state in which water stop was performed. It is another example of the water stop structure between the members which concern on this invention, (a) is sectional drawing which shows the state before water stop, (b) is sectional drawing which shows the state in which water stop was performed. . It is an example of the water stop method between the members which concern on this invention, (a)-(d) is sectional drawing explaining the procedure which performs the water stop between members. BRIEF DESCRIPTION OF THE DRAWINGS It is an example of the water stop material used for the water stop structure between the members based on this invention, (a) is sectional drawing which shows the diameter expansion deformation | transformation of a cylindrical elastic body, (b) is a cylindrical elastic body. It is sectional drawing which shows after diameter expansion deformation | transformation. The arrow indicates the pressing direction. It is an example of the water stop structure between the members which concern on this invention, (a) is sectional drawing which shows the state before water stop, (b) is sectional drawing which shows the state in which water stop was performed.

  Embodiments of the present invention will be described below with reference to the drawings.

<First Embodiment>
In FIG. 1, the code | symbol 1 shows a cylindrical elastic body, and the code | symbol 1a in FIG. 2 shows the cylindrical elastic body of a form different from FIG. As shown in FIG. 3 and FIG. 4, these cylindrical elastic bodies 1, 1 a are member rows 10 </ b> A, 20 </ b> A formed by arranging a plurality of members such as a steel pipe pile 10 and a concrete pile material 20, It is embedded in the gap S between the adjacent members 10 and 10 (20, 20).

The cylindrical elastic bodies 1, 1 a are made of an elastic material such as rubber, and are formed long in the length direction of the members 10, 20 and have a hollow portion 2. That is, the cylindrical elastic bodies 1 and 1a are long materials made of an elastic material, and the hollow portion 2 is formed along the length direction of the cylindrical elastic bodies 1 and 1a.
As shown in FIGS. 1B and 2B, the hollow portion 2 is pressure-filled so that the filler 3 becomes a ground load or more. And the cylindrical elastic bodies 1 and 1a are comprised so that a diameter expansion deformation may be carried out elastically, when the filler 3 is pressure-filled in this way. Thereby, the cylindrical elastic bodies 1 and 1a embedded in the gap S between the adjacent members 10 and 10 (20 and 20) are in close contact with the adjacent members 10 and 10 (20 and 20). Moreover, these cylindrical elastic bodies 1 and 1a are set so that a diameter may be expanded uniformly over own length direction.

  Moreover, although not shown in figure, one end part is open | released among the longitudinal direction both ends of the cylindrical elastic bodies 1 and 1a, it is used as the filling port of the said filler 3, and the other end part is obstruct | occluded. Therefore, since the filler 3 is covered with the cylindrical elastic bodies 1 and 1a, it does not leak from other than the filling port. Thereby, the material loss of the filler 3 can be reduced. Moreover, it can prevent reliably diluting with groundwater.

Of the cylindrical elastic bodies 1 and 1a, the cylindrical elastic body 1 shown in FIG. 1 is formed in a cylindrical cross section.
On the other hand, in the cylindrical elastic body 1a shown in FIG. 2, a plurality of protrusions 4 are integrally formed on the outer peripheral surface of the main body having the hollow portion 2 formed in a cylindrical section.
The plurality of protrusions 4 are ridges that are elongated in the length direction of the cylindrical elastic body 1a, and are arranged at intervals in the circumferential direction of the cylindrical elastic body 1a. Therefore, a groove is formed between the adjacent protrusions 4 and 4.

The plurality of protrusions 4 are ridges, but the present invention is not limited to this. For example, a plurality of protrusions that protrude in a spike shape from the outer peripheral surface of the cylindrical elastic body 1a may be used.
Moreover, the position where these several protrusion parts 4 ... is provided among the outer peripheral surfaces of the said cylindrical elastic body 1a is embed | buried in the clearance gap S between the members 10 and 10 (20, 20) which the cylindrical elastic body 1a adjoins. When this is done, the cylindrical elastic body 1a is at least a surface in contact with the adjacent members 10, 10 (20, 20).
In the present embodiment, the plurality of protrusions 4 are integrated with at least the surface of the outer peripheral surface of the cylindrical elastic body 1a that is in contact with the adjacent members 10, 10 (20, 20). It is needless to say that the plurality of protrusions 4 may be provided over the entire circumference of the cylindrical elastic body 1a because it is formed.

  Moreover, although the mortar is used as the filler 3 of this Embodiment, it is not restricted to this, For example, bentonite, cement milk, resin, etc. may be sufficient. That is, any fluid material having the property of solidifying can be used as appropriate.

Examples of the member include the steel pipe pile 10 and the concrete pile member 20 that are not provided with a joint on the outer peripheral surface as described above. Moreover, although not shown in figure, the pile etc. which cannot anticipate a water stop effect even if there exists a joint are employable. Examples of the concrete pile material 20 include so-called PC piles and RC piles, precast members manufactured in advance in a factory, and the like.
In this Embodiment, the member shown in FIG. 3 is the steel pipe pile 10, and the member shown in FIG.
A steel pipe 21 is embedded in the member 20 as shown in FIG.
Further, a groove portion 22 is formed on the side surface of the member 20 along the length direction of the member 20 so as to cut out the side surface in a semicircular shape. Therefore, when forming the member row 20 </ b> A by arranging the plurality of members 20, 20, the member row 20 </ b> A along the length direction of the member 20 is formed by making the side surfaces formed with the groove portions 22, 22 face each other. It is possible to form a substantially circular gap S passing through the.

Moreover, wall-shaped member rows 10A and 20A can be formed by arranging a plurality of these members 10 and 20 side by side. That is, in the case of the member 10 which is the said steel pipe pile, for example, a wall-shaped member row | line | column 10A is set | placed on a ground by arranging a plurality of members 10 ... by a pile driving machine, a pile press-in machine, etc., for example. Can be formed. Further, in the case of the member 20 that is the PC pile, for example, a plurality of members 20 are arranged in the ground so as to be lined up or placed on the ground to form the wall-shaped member row 20A. Can do.
In this way, by forming a plurality of members 10 and 20 side by side to form wall-shaped member rows 10A and 20A, various structures such as retaining walls, revetments, foundations of buildings, etc. Can be configured.

In the water stop structure between the members of the present embodiment, as shown in FIGS. 3 and 4, a cylindrical elastic body 1a in which a plurality of protrusions 4 are integrally formed is used.
That is, the said cylindrical elastic body 1a is embed | buried under the clearance gap S between the said adjacent members 10 and 10 (20, 20). At this time, the cylindrical elastic body 1a is elastically expanded and deformed by being pressurized and filled with the filler 3 in the hollow portion 2, and is in close contact with the adjacent members 10, 10 (20, 20). Yes.

As shown in FIG. 3, the cylindrical elastic body 1 a embedded in the gap S and pressurized and filled with the filler 3 is in a state of being deformed following the surface shape of the members 10 and 10. In the case of the cylindrical elastic body 1a embedded in the gap S between the members 20 and 20 shown in FIG. 4, the gap S formed between the opposing side surfaces of the adjacent members 20 and 20 is substantially circular as described above. Therefore, the amount of deformation can be relatively small.
Further, the shape of the cylindrical elastic body 1a is solidified by solidifying the filler 3 while the cylindrical elastic body 1a is deformed following the surface shape of the members 10 and 10 as described above. The filler 3 can be deformed according to the shape of the filler 3 and the state can be maintained permanently. Therefore, it goes without saying that the cylindrical elastic body 1a after the filler 3 is cured functions not only as a water stop effect but also as a soil retaining unit with the members 10 and 10.

  Further, as shown in FIGS. 3 and 4, the plurality of protrusions 4 integrally formed on the outer peripheral surface of the cylindrical elastic body 1 a are adjacent to each other as the cylindrical elastic body 1 a is expanded in diameter. It is in the state pressed against member 10,10 (20,20). In this way, when the plurality of protrusions 4 are pressed against the adjacent members 10, 10 (20, 20), the ground contact area of the contact portion can be expanded, so that a sealing effect that resists water pressure and the like is exhibited, and the waterstop performance Can be improved.

Next, the water stop method between the members of the present embodiment will be described.
First, when the steel pipe pile as shown in FIG. 3 is used as the member 10, before the construction of the cylindrical elastic body 1a, a plurality of members 10 ... which are steel pipe piles are arranged by a pile driver (not shown). Place on the ground. That is, the member row 10A is formed by arranging a plurality of members 10 that are steel pipe piles.

Subsequently, although not shown, the ground is drilled to the required depth by a boring machine while inserting the casing pipe into the gap S between the adjacent members 10 and 10.
When the ground is drilled, the cylindrical elastic body 1a in a state where an injection hose for injecting the filler 3 is inserted into the hollow portion 2 is introduced into the casing pipe. That is, the cylindrical elastic body 1a is embedded in the gap S.

Subsequently, the injection hose and the casing pipe are pulled out while the filler 3 is pressurized and injected into the hollow portion 2 of the cylindrical elastic body 1a with the injection hose so as to be equal to or higher than the natural load. As a result, the restriction by the casing pipe is eliminated, so that the cylindrical elastic body 1a is more easily deformed by expanding its diameter. Furthermore, since the injection hose in the hollow portion 2 is pulled out, the state of filling with the filler 3 can be gradually increased from the lower end portion of the cylindrical elastic body 1a. That is, the filler 3 can be pressurized and filled into the hollow portion 2.
The cylindrical elastic body 1a is elastically expanded and deformed as shown in FIG. 2 (b), and then comes into close contact with the adjacent members 10 and 10 as shown in FIG. 3 (b). At this time, it is advisable to insert a hose separately into the casing pipe to the tip of the casing pipe and fill with mortar or the like to fix the tip of the cylindrical elastic body 1a.

After pulling out the injection hose and the casing pipe, the pressurized state of the filler 3 is maintained while preventing the filler 3 from leaking from the filling port. For maintaining the pressurized state, for example, the filling port is closed, or pressure is mechanically applied to the filler.
Then, the filler 3 is solidified while maintaining the pressurized state. As a result, the cylindrical elastic body 1a can be kept in close contact with the adjacent members 10 and 10 while being deformed following the surface shape of the adjacent members 10 and 10.

  Since the gap S between the adjacent members 10 and 10 can be closed as described above, water stoppage between these adjacent members 10 and 10 can be reliably performed. In addition, the cylindrical elastic body 1a embedded in the gap S between the adjacent members 10 and 10 can be brought into close contact with the adjacent members 10 and 10 simply by pressurizing and filling the filler 3 in the hollow portion 2. And the water stop between the adjacent members 10 and 10 can be performed easily.

  Next, when the PC pile as shown in FIG. 4 is used as the member 20, a substantially circular hole S can be formed by arranging a plurality of members 20 side by side. No ground drilling work is required. Therefore, unlike the case shown in FIG. 3, a machine for drilling such as a casing pipe and a boring machine is not required.

  Subsequently, the cylindrical elastic body 1 a in a state where an injection hose for injecting the filler 3 is inserted into the hollow portion 2 is directly put into the gap S between the adjacent members 20 and 20. That is, the cylindrical elastic body 1a is embedded in the gap S.

Subsequently, the injection hose is pulled out while the filler 3 is pressurized and injected into the hollow portion 2 of the cylindrical elastic body 1a by the injection hose. Thereby, since the injection hose in the hollow part 2 is pulled out, the filling state by the filler 3 can be gradually raised from the lower end part of the cylindrical elastic body 1a. That is, the filler 3 can be pressurized and filled into the hollow portion 2.
The cylindrical elastic body 1a is elastically expanded and deformed as shown in FIG. 2 (b), and then comes into close contact with the adjacent members 20 and 20 as shown in FIG. 4 (b).

After pulling out the injection hose, as in the case shown in FIG. 3, the cylindrical elastic body 1a is made into the surface shape of the adjacent members 20 and 20 by solidifying the filler 3 while maintaining the pressurized state. It is possible to maintain a state of being in close contact with the adjacent members 20 and 20 while being deformed following the movement.
In the case shown in FIG. 4 as well, as in the case shown in FIG. 3, it is possible to reliably and easily stop water between the adjacent members 10 and 10. In addition, since the drilling operation becomes unnecessary, the entire operation of constructing the structure can be shortened.

According to the present embodiment, even if various events occur such that the gap S between the adjacent members 10 and 10 (20, 20) is not uniform, the adjacent members 10, 10 (20, 20). ) Can be brought into close contact with the adjacent members 10 and 10 (20 and 20). As a result, even if the gap S between the adjacent members 10 and 10 (20, 20) of the member rows 10A and 20A constituting the structure is changed in the member 10 (20) and the gap S fluctuates, Since the cylindrical elastic bodies 1 and 1a follow and can be reliably closed, the water can be reliably stopped regardless of various events in which the gaps S between the adjacent members 10 and 10 (20 and 20) are non-uniform. can do.
Further, unlike the conventional case, the leakage of the filler 3 from other than the filling port can be prevented, so that not only the cost can be reduced, but also the certainty of water stopping can be improved.

〔Example〕
Next, with reference to FIG. 5, another example of the water stopping method between members according to the present embodiment will be described.
In the water stopping method between members of the present embodiment, first, a plurality of members 10 are arranged side by side to form a member row 10A in the soil or in water. In the present embodiment, it is assumed to be in the ground.
Subsequently, in the gap S between the members 10, 10, on the one side with the center line 11 of the member row 10 </ b> A as a boundary, the member 10 is formed in the length direction of the member 10 and has the hollow portion 2. A cylindrical elastic body 1a is embedded.
Subsequently, the cylindrical elastic body is elastically expanded and deformed by pressurizing and filling water into the hollow portion, and is brought into close contact with the adjacent member, so that the soil on the other side of the center line of the member row Alternatively, water is removed, and then the water in the hollow portion is replaced with a predetermined filler while the cylindrical elastic body is in close contact with the adjacent member.

  More specifically, when the member row 10A is formed as described above, the ground is drilled to a required depth by a boring machine while the casing pipe 12 is inserted into the gap S between the adjacent members 10 and 10. In addition, as shown to Fig.5 (a), a drilling place is made into the one side which made the centerline 11 of the member row | line | column 10A a boundary.

  Subsequently, when the ground is drilled, as shown in FIG. 5A, an injection hose (not shown) for injecting the filler 3 and water 3a into the casing pipe 12 is provided in the hollow portion 2. The inserted cylindrical elastic body 1a is inserted. That is, the cylindrical elastic body 1a is embedded in the gap S.

Subsequently, while injecting the water 3a into the hollow portion 2 of the cylindrical elastic body 1a by the injection hose so as to be a pressure equal to or higher than the groundwater pressure and in close contact with the adjacent members 10 and 10, the casing The pipe 12 is pulled out.
The cylindrical elastic body 1a is elastically expanded and deformed as shown in FIG. 5 (b), and is in close contact with the adjacent members 10 and 10.
In addition, the diameter of the cylindrical elastic body 1a after the diameter expansion deformation or the length in the direction orthogonal to the axial direction is set to be longer than the length of the gap S between the adjacent members 10 and 10.

After the casing pipe 12 is pulled out and the cylindrical elastic body 1a filled with water 3a is brought into close contact with the adjacent members 10 and 10, the pressurized state of the water 3a is maintained while preventing leakage of the water 3a from the filling port. To do. For maintaining the pressurized state, for example, the filling port is closed, or a pressure setting valve is provided at the filling port to mechanically apply pressure to the filling material.
In this embodiment, a pressure setting valve is used.

Subsequently, as shown in FIG. 5C, the ground on the other side of the center line 11 of the member row 10A is excavated and removed.
As described above, when the soil on the other side (excavation side) of the center line 11 is removed from the cylindrical elastic body 1a, the soil water pressure (natural ground load) applied to the cylindrical elastic body 1a starts from one side of the center line 11. Therefore, the cylindrical elastic body 1a is pushed from one side of the center line 11 to the other side, and comes into closer contact with the adjacent members 10 and 10.

Subsequently, as shown in FIG. 5 (d), the water 3 a in the hollow portion 2 is filled with the filler 3 in the state where the cylindrical elastic body 1 a is closely attached to the adjacent members 10, 10 in this way. Replace with.
When the water 3a is replaced with the filler 3, the pressure setting valve is used to secure the internal pressure of the cylindrical elastic body 1a.
Then, the filler 3 that maintains the pressurized state is solidified. As a result, the cylindrical elastic body 1a can be kept in close contact with the adjacent members 10 and 10 while being deformed following the surface shape of the adjacent members 10 and 10.
The filler 3 to be replaced is a hardened body such as mortar as described above, but is not limited to this, and an elastic material that exhibits elasticity even after solidification or a high-pressure liquid is used. It shall be good.

According to the present embodiment, since the gap S between the adjacent members 10 and 10 can be closed as described above, water stoppage between these adjacent members 10 and 10 can be reliably performed. In addition, the cylindrical elastic body 1a embedded in the gap S between the adjacent members 10 and 10 can be brought into close contact with the adjacent members 10 and 10 simply by pressurizing and filling the filler 3 in the hollow portion 2. And the water stop between the adjacent members 10 and 10 can be performed easily.
Further, the cylindrical elastic body 1a is elastically expanded and deformed by pressurizing and filling water into the hollow portion 2, and is brought into close contact with the adjacent members 10 and 10, so that the soil on the excavation side of the member row 10A is removed. By removing, the cylindrical elastic body 1a can be pushed to the excavation side using earth pressure from one side of the center line 11. Thereby, while being able to improve the adhesiveness of the cylindrical elastic body 1a and the adjacent members 10 and 10, biting of earth and sand between the cylindrical elastic body 1a and the member 10 can be reduced.
Further, by excavating the soil on the excavation side before replacing the water 3a in the hollow portion 2 with the filler 3, gravel or the like that inhibits the expansion deformation of the cylindrical elastic body 1a on the excavation side Therefore, the cylindrical elastic body 1a can be reliably expanded and deformed.
Further, after excavating the soil on the excavation side and tightly adhering the cylindrical elastic body 1a to the adjacent members 10 and 10, the cylindrical elastic body is used to replace the water 3a in the hollow portion 2 with the filler 3. 1a is in a state where the diameter has been sufficiently expanded and deformed before the replacement with the filler 3. Therefore, it is possible to reliably prevent the cylindrical elastic body 1a from slipping out between the adjacent members 10 and 10 toward the other side of the center line 11 after the replacement of the filler 3.
In addition, when a hardened body such as mortar is not used as the filler 3, for example, an elastic material or a high-pressure liquid can be used, elasticity can be exerted, so that it can follow the deformation of the member 10 due to an earthquake or the like. Can do.

<Second Embodiment>
Next, a second embodiment of the present invention will be described with reference to the drawings. For convenience of explanation, only components that are different from the above-described first embodiment will be described.

As shown in FIGS. 6 and 7, the water stop structure between the members of the present embodiment is long in the length direction of the member 10 in the gap S between the adjacent members 10, 10 in the member row 10 </ b> A. The water stop material formed in is buried.
The water blocking material is a cylindrical elastic body having a hollow portion 32 while being held at a position in contact with one and the other of the adjacent members 10 and 10 on the outer peripheral surface of the pile body 30 and the pile body 30. 31 and 31, and the cylindrical elastic bodies 31 and 31 are elastically expanded and deformed by pressurizing and filling the hollow portion 32 with the filler 33, and the adjacent members 10 and 31 10 is in close contact with one and the other.
That is, the water stop material of the present embodiment is embedded in a gap between adjacent members in a member row formed by arranging a plurality of members such as steel pipe piles and concrete pile members. An elastic body that is formed long in the length direction of the member and has a hollow portion, and is elastically expanded and deformed by pressurizing and filling the hollow portion with a filler, and is in close contact with the member It is common with the cylindrical elastic bodies 1 and 1a of 1st Embodiment by the point provided with.

First, the pile body 30 is a steel pipe that is directly rotationally press-fitted into the ground. As shown in FIG. 6A, the cylindrical body is formed on the outer peripheral surface along the axial direction of the pile body 30. Grooves 30a, 30a for holding the elastic bodies 31, 31 are formed. Therefore, the cross section of the pile body 30 has a recessed shape corresponding to the shape of the recessed groove portion 30a. Further, the recessed groove portions 30 a and 30 a are formed on the outer peripheral surface of the pile body 30 corresponding to the direction in which the adjacent members 10 and 10 are present.
In addition, the said recessed groove part 30a may be formed over the full length of the pile body 30, and may be formed only in the part contact | abutted to the said members 10 and 10. FIG. Further, the recessed groove portion 30a is formed in an arc shape in a sectional view.
Although not shown, it is assumed that a cutting blade or the like that enables rotational press-fitting of the pile body 30 into the ground is provided at the tip of the pile body 30 in the press-fitting direction.

In addition, the diameter of the pile body 30 is set to be longer than the length of the gap S. Further, since the pile body 30 is a steel pipe, the pile body 30 is formed from the gap S between the adjacent members 10 and 10 regardless of whether or not the cylindrical elastic bodies 31 and 31 are filled with the filler 33. It can be surely prevented from coming out.
Moreover, since this pile body 30 is a steel pipe, a high-strength water stop material can be comprised. For this reason, it is possible to prevent the gap S from slipping out as described above, or to directly press-fit the ground.

The cylindrical elastic body 31 is made of an elastic material such as rubber, and is formed long in the length direction of the member 10 and has the hollow portion 32. That is, the cylindrical elastic body 31 is a long material made of an elastic material, and a hollow portion 32 is formed along its own length direction. Further, as shown in FIG. 6A, the cylindrical elastic body 31 is formed in a substantially biconvex lens shape in cross section in which the ends of two arc-shaped elastic materials are joined together.
Further, the cylindrical elastic body 31 is fixed to the concave groove portion 30 a with the side surface of the pile body being in contact with and fixed to the concave groove portion 30 a, and the outer surface opposite to the side surface of the pile body is continuous with the outer peripheral surface of the pile body 30. In this way, it is stored and held.
In this way, the cylindrical elastic body 31 is housed and held in the concave groove portion 30a in a state before the filling material 33 is filled, whereby the pile body 30 can be rotationally press-fitted.

As shown in FIG. 6B, the hollow portion 32 is pressurized and filled with the filler 33 so as to be equal to or greater than the natural ground load. And the cylindrical elastic body 31 is comprised so that a diameter expansion deformation may be carried out elastically, when the filler 33 is pressure-filled in this way.
Accordingly, the cylindrical elastic body 31 embedded in the gap S between the adjacent members 10 and 10 is in close contact with the adjacent members 10 and 10. Further, these cylindrical elastic bodies 31 are set so as to uniformly expand in diameter along their own length direction.

Although not shown, the cylindrical elastic body 31 is provided with a filling port for filling the filler 33, and the portions other than the filling port are closed.
Further, as the filler 33 filled in the hollow portion 32, an elastic material such as a resin that exhibits elasticity even after being solidified is used, and exhibits the followability to the member 10 together with the cylindrical elastic body 31. Can do. However, the present invention is not limited to this, and a cured body such as mortar or a high-pressure liquid may be used.

As the member of the present embodiment, the steel pipe pile 10 is used as in the first embodiment, but the concrete pile material 20 or the like may be used, and is not limited thereto.
Further, the wall-shaped member row 10A formed by arranging a plurality of the members 10 is used as, for example, a retaining wall, a seawall, a building foundation, or the like.

Next, with reference to FIG. 6, FIG. 7, the water stop method between the members of this Embodiment is demonstrated.
In the water stopping method between members of the present embodiment, first, a member row 10A is formed by arranging a plurality of members 10 side by side.
Subsequently, in the gap S between the adjacent members 10, 10, the member 10 is formed to be long in the length direction of the member 10, and the adjacent member among the pile body 30 and the outer peripheral surface of the pile body 30. A water-stopping material is embedded, which is held in positions where it abuts against one and the other of 10 and 10 and has cylindrical elastic bodies 31 and 31 having a hollow portion 32.
Subsequently, the cylindrical elastic bodies 31, 31 are elastically expanded and deformed by pressurizing and filling the hollow portions 32, 32 with the fillers 33, 33, and one of the adjacent members 10, 10 is used. Further, the fillers 33 and 33 are pressed and held in close contact with each other.

More specifically, first, when the member row 10A is formed as described above, as shown in FIG. 7A, the water blocking material is formed on the ground of the gap S between the adjacent members 10 and 10 by a pile presser. Rotate and press.
The water stop material can be press-fitted to a predetermined depth, and when the rotary press-fitting operation is finished, the cylindrical elastic bodies 31 and 31 stop the rotary press-fitting at a position facing the adjacent members 10 and 10. To do.

Subsequently, an injection hose (not shown) for injecting the fillers 33 and 33 is inserted into the hollow portions 32 and 32 of the cylindrical elastic bodies 31 and 31. Then, the fillers 33 and 33 are pressure-injected into the hollow portions 32 and 32 so as to be a pressure equal to or higher than the groundwater pressure and in close contact with the adjacent members 10 and 10.
And the cylindrical elastic bodies 31 and 31 are elastically expanded and deformed as shown in FIG. 7B, and are in close contact with the adjacent members 10 and 10.

After the injection hose is pulled out, the pressurized state of the fillers 33 and 33 is maintained while preventing the fillers 33 and 33 from leaking from the filling port. For maintaining the pressurized state, for example, the filling port is closed, or pressure is mechanically applied to the filler.
Then, the fillers 33 and 33, which are elastic materials while maintaining the pressurized state, are cured. Thereby, the cylindrical elastic bodies 31 and 31 can be kept in close contact with the adjacent members 10 and 10 while being deformed following the surface shape of the adjacent members 10 and 10.

According to the present embodiment, since the gap S between the adjacent members 10 and 10 can be closed by the water stop material as described above, the water stop between the adjacent members 10 and 10 is ensured. Can be done. In addition, the cylindrical elastic bodies 31 and 31 embedded in the gap S between the adjacent members 10 and 10 can be formed into the adjacent members 10 and 10 simply by pressure-filling the hollow portions 32 and 32 with the fillers 33 and 33. Since it can adhere | attach, water stop between the adjacent members 10 and 10 can be performed easily.
Moreover, since the said pile body 30 is a steel pipe and can be directly rotationally press-fitted, a water-stopping material can be embed | buried efficiently compared with the case where a hole is made in a ground beforehand and a water-stopping material is inserted, for example.
In addition, by using an elastic material as the fillers 33, 33, it is possible to exhibit a stable water stopping performance for a long period of time, so that it is possible to stop the water for a long time by the main construction. That is, the water stop material can be used for water stop when the member row 10A is used as a so-called fixed object such as a building foundation.
Furthermore, the fillers 33 can be used by repeating injection and discharge. For this reason, since the pile body 30, the cylindrical elastic body 31, and the filler 33 can be reused, it leads to cost reduction and also enables temporary water stoppage by temporary construction. That is, the water stop material can be used for water stop when the member row 10A is used as a temporary earth retaining or the like.

DESCRIPTION OF SYMBOLS 1 Cylindrical elastic body 1a Cylindrical elastic body 2 Hollow part 3 Filler 4 Projection part 10A Member row | line | column 10 Member 20A Member row | line | column 20 Member 21 Steel pipe 22 Groove part S Crevice

Claims (8)

A member row is formed by arranging a plurality of members such as steel pipe piles and concrete pile members,
In the gap between the members, a cylindrical elastic body is embedded in the length direction of the member and has a hollow portion,
The cylindrical elastic body is elastically expanded and deformed by pressurizing and filling the hollow portion with a filler, and is in close contact with the adjacent member.   2. The member according to claim 1, wherein one end portion of both ends in the length direction of the cylindrical elastic body is opened to be a filling port of the filler, and the other end portion is closed. Water stop structure between.   The plurality of protrusions are integrally formed at intervals on at least a surface that contacts the adjacent member among the outer peripheral surfaces of the cylindrical elastic body. Water stop structure between the members. A member row is formed by arranging a plurality of members such as steel pipe piles and concrete pile members,
In the gap between adjacent members, a water-stop material formed in the length direction of the member is embedded,
The water stop material is a pile body,
A cylindrical elastic body having a hollow portion while being held at a position in contact with one and the other of the adjacent members of the outer peripheral surface of the pile body,
The cylindrical elastic body is elastically expanded and deformed by pressurizing and filling the hollow portion with a filler, and is in close contact with one and the other of the adjacent members. Water stop structure.   5. The groove according to claim 4, wherein a concave groove for holding the cylindrical elastic body is formed on an outer peripheral surface of the pile body along an axial direction of the pile body. Water stop structure. By arranging multiple members such as steel pipe piles and concrete piles, a member row is formed,
Embedded in the gap between the members is a cylindrical elastic body that is formed long in the length direction of the member and has a hollow portion,
The cylindrical elastic body is elastically expanded and deformed by pressurizing and filling the hollow portion with a filler, and is brought into close contact with the adjacent member, and the filler is pressurized and held to solidify. A water stopping method between members characterized by the above. By arranging a plurality of members such as steel pipe piles and concrete piles, a member row is formed in the soil or water,
Among the gaps between the members, on the one side with the center line of the member row as a boundary, a cylindrical elastic body that is formed long in the length direction of the members and has a hollow portion is embedded,
The cylindrical elastic body is elastically expanded and deformed by pressurizing and filling water into the hollow portion, and is in close contact with the adjacent member,
Removing soil or water on the other side of the center line of the member row;
Then, the water-stopping method between the members, wherein the water in the hollow portion is replaced with a predetermined filler while the cylindrical elastic body is in close contact with the adjacent member. By arranging multiple members such as steel pipe piles and concrete piles, a member row is formed,
It is formed in the gap between adjacent members so as to be long in the length direction of the member, and is held at a position where the pile body and the outer peripheral surface of the pile body are in contact with one or the other of the adjacent members. Embedded with a water-stopping material comprising a cylindrical elastic body having a hollow portion,
The cylindrical elastic body is elastically expanded and deformed by pressurizing and filling the hollow portion with a filler, and is in close contact with one and the other of the adjacent members, and the filler is pressurized and held. A method for stopping water between members.

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