Water cut-off fixture, water cut-off structure, and method for manufacturing water cut-off structure

Abstract

To provide a water cut-off fixture capable of regulating a flow of a fluid along the long side of a tendon.SOLUTION: This water cut-off fixture for regulating a flow of a fluid along the longitudinal direction of a tendon comprises: a first rigid body; a second rigid body; an elastic body disposed between the first rigid body and the second rigid body; a fastening shaft that is disposed in a laminate formed by layering the first rigid body, the elastic body, and the second rigid body, and that changes a distance between the first rigid body and the second rigid body; and a through-hole penetrating the laminate. The inner diameter of the through-hole is larger than the outer diameter of the tendon inserted into the through-hole.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a water stop jig, a water stop structure, and a method for manufacturing a water stop structure. [Background technology]

[0002] Patent Document 1 describes a method for forming a deck having a sheath and a space provided at an end of the sheath, A step of inserting a PC steel member into the sheath and tensioning it; A step of fixing the PC steel member to the deck using a fixing tool disposed in the space; A method for fastening PC steel members is disclosed, which comprises the step of installing a filler material in the space. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2005-220593 A Summary of the Invention [Problem to be solved by the invention]

[0004] Concrete structures are characterized by their weakness in tensile strength. Therefore, prestressing is used to apply compressive strength to the concrete structure in advance using tension members, thereby controlling the tensile stress when the concrete structure is subjected to a load. Prestressed concrete, which uses tension members to apply tension, is used in bridges and other structures.

[0005] The end of the tendon to which tension has been applied is gripped by a fixing device and fixed to the concrete structure, allowing continuous compressive force to be applied to the concrete structure.

[0006] As disclosed in Patent Document 1, it has been conventional to place a filler material, also known as grout, around the fixing device for the purpose of protecting the areas around the ends of the tension member and preventing rust, etc.

[0007] Fillers such as cement milk and resin are used, but depending on the material, the filler may be expensive, and it may be necessary to place the filler only in areas that require special protection or rust prevention.

[0008] However, multiple tendons may be placed in a concrete structure at high density, and the structure of the space around the tendons may tend to have a complex shape. Furthermore, since the filler is liquid before hardening, it tends to flow along the tendons, making it difficult to place it only in a specific area.

[0009] Therefore, an object of the present disclosure is to provide a waterstop device that can regulate the flow of fluid along the longitudinal direction of a tendon. [Means for solving the problem]

[0010] The water stop device of the present disclosure is a water stop device that regulates the flow of a fluid along a longitudinal direction of a tendon, A first rigid body; A second rigid body; an elastic body disposed between the first rigid body and the second rigid body; a fastening shaft that is disposed in a laminate in which the first rigid body, the elastic body, and the second rigid body are laminated, and that changes the distance between the first rigid body and the second rigid body; A through hole penetrating the laminate, The inner diameter of the through hole is larger than the outer diameter of the tendon to be inserted into the through hole. Effect of the Invention

[0011] According to the present disclosure, a waterstop tool capable of regulating the flow of fluid along the longitudinal direction of a tendon can be provided. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view of a water stop device according to one embodiment of the present disclosure. [Figure 2A] FIG. 2A is an explanatory diagram of a configuration example of a regulating member. [Figure 2B] FIG. 2B is an explanatory diagram of one configuration example of the regulating member. [Figure 2C] FIG. 2C is an explanatory diagram of one configuration example of the restricting member. [Figure 3A] FIG. 3A is a cross-sectional view of a through-hole. [Figure 3B] FIG. 3B is a cross-sectional view of the through hole, and is an explanatory diagram showing a state in which a tendon is disposed in the through hole. [Figure 4] FIG. 4 is a cross-sectional view taken along a plane passing through the fastening shaft. [Diagram 5] FIG. 5 is an explanatory diagram of a water stopping structure according to one embodiment of the present disclosure. [Figure 6] FIG. 6 is an explanatory diagram of a water stopping structure according to one embodiment of the present disclosure. [Figure 7] FIG. 7 is a flow chart of a method for manufacturing a water stopping structure according to one embodiment of the present disclosure. [Figure 8] FIG. 8 is a flow chart of a method for manufacturing a water stopping structure according to one embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] The embodiments for carrying out the invention are described below.

[0014] [Description of the embodiments of the present disclosure] First, the embodiments of the present disclosure will be described. In the following description, the same or corresponding elements are denoted by the same reference numerals, and the same description thereof will not be repeated.

[0015] (1) A water stop device according to one aspect of the present disclosure is a water stop device that regulates a flow of a fluid along a longitudinal direction of a tendon, A first rigid body; A second rigid body; an elastic body disposed between the first rigid body and the second rigid body; a fastening shaft that is disposed in a laminate in which the first rigid body, the elastic body, and the second rigid body are laminated, and that changes the distance between the first rigid body and the second rigid body; A through hole penetrating the laminate, The inner diameter of the through hole is larger than the outer diameter of the tendon to be inserted into the through hole.

[0016] The tightening shaft changes the distance between the first rigid body and the second rigid body, compressing the elastic body and bringing the elastic body into contact with the tension member in the through hole, thereby restricting the movement of fluid along the length of the tension member. In addition, the compression of the elastic body is released, creating a gap between the tension member and the elastic body in the through hole, making it easy to install and move the waterstop jig.

[0017] (2) In (1), the elastic body may further include a restricting member that covers at least a portion of an outer surface of the elastic body.

[0018] The waterstop jig according to one embodiment of the present disclosure has a restricting member, which can prevent the elastic body from expanding to the outer periphery instead of into the through hole when the elastic body is compressed by the first rigid body and the second rigid body. Therefore, the waterstop jig has a restricting member, which can improve the adhesion between the tension material arranged in the through hole and the elastic body, thereby improving the waterstop performance of the waterstop jig.

[0019] (3) In (1) or (2), the through holes in the first rigid body and the second rigid body may be chamfered at the openings facing the elastic body.

[0020] By chamfering the through holes of the first rigid body and the second rigid body, when the elastic body is compressed, it becomes easier for the elastic body to deform and be inserted into the chamfered portion. This makes it easier to increase the area of ​​the surface of the elastic body facing the tendon and ensure the contact area between the elastic body and the tendon. This makes it easier to restrict the movement of fluid particularly along the length of the tendon.

[0021] (4) In any one of (1) to (3), the fastening shaft is a bolt, the laminate has a bolt hole penetrating the laminate and into which the fastening shaft is inserted, The inner surface of the bolt hole in the second rigid body may have a female thread that mates with a male thread provided on the fastening shaft.

[0022] The inner surface of the bolt hole of the second rigid body has a female thread that fits with the male thread on the fastening shaft, so the fastening shaft can be easily tightened or loosened without having to hold down the nut, etc. This improves workability when installing or moving the waterstop jig.

[0023] (5) A water stop structure according to one aspect of the present disclosure is a water stop structure that regulates a flow of a fluid along a longitudinal direction of a tension member, The tendon is at least partially disposed within a concrete structure; and A fixing tool that grips an end of the tendon; a water stopper arranged along the longitudinal direction of the tension member at a position closer to the concrete structure than the anchoring device; The water stop jig is A first rigid body; A second rigid body; an elastic body disposed between the first rigid body and the second rigid body; a fastening shaft that is disposed in a laminate in which the first rigid body, the elastic body, and the second rigid body are laminated, and that changes the distance between the first rigid body and the second rigid body; a through hole penetrating the laminate and into which the tendon is inserted; Before the tightening shaft reduces the distance between the first rigid body and the second rigid body to compress the elastic body, an inner diameter of the through hole in the elastic body is larger than an outer diameter of the tendon, When the tightening shaft reduces the distance between the first rigid body and the second rigid body and compresses the elastic body, the inner surface of the through hole in the elastic body comes into contact with at least a portion of the outer surface of the tendon.

[0024] By providing a waterproof structure in which a waterproof jig is placed between the fixing device and the concrete structure, it is possible to prevent the filler placed to protect the area around the fixing device, including the end of the tension member, from penetrating into the sheath of the concrete structure, thereby reducing the amount of filler used and the cost.

[0025] (6) In (5), the present invention may further include a spacer that is disposed between the concrete structure and the fastener and that accommodates at least a portion of the water-stopping jig therein.

[0026] The water-stopping structure has a spacer, which increases the freedom of the installation position of the water-stopping jig. The spacer can also be installed between the fixing device and the anchor plate, and can support the tension applied to the tendon through the fixing device.

[0027] (7) A water stop structure according to one aspect of the present disclosure is a water stop structure that regulates a flow of a fluid along a longitudinal direction of a tension member, The tendon is at least partially disposed within a concrete structure; and A fixing tool that grips an end of the tendon; a water stopper arranged along the longitudinal direction of the tension member at a position farther from the concrete structure than the anchoring device; The water stop jig is A first rigid body; A second rigid body; an elastic body disposed between the first rigid body and the second rigid body; a fastening shaft that is disposed in a laminate in which the first rigid body, the elastic body, and the second rigid body are laminated, and that changes the distance between the first rigid body and the second rigid body; a through hole penetrating the laminate and into which the tendon is inserted; Before the tightening shaft reduces the distance between the first rigid body and the second rigid body to compress the elastic body, an inner diameter of the through hole in the elastic body is larger than an outer diameter of the tendon, When the tightening shaft reduces the distance between the first rigid body and the second rigid body and compresses the elastic body, the inner surface of the through hole in the elastic body comes into contact with at least a portion of the outer surface of the tendon.

[0028] By using a waterproof structure in which a waterproof jig is placed between the end of the tension material and the fixing device, even if the excess length of the tension material is increased, the filler can be placed only around the fixing device, which reduces the amount of filler used and the cost.

[0029] (8) A manufacturing method of a water stop structure according to one aspect of the present disclosure is a manufacturing method of a water stop structure that regulates a flow of a fluid along a longitudinal direction of a tension member, comprising: an installation step of installing a water stop jig on the tendon, at least a portion of which is disposed within the concrete structure; a tensioning step of introducing tension into the tension member and installing a fastener that grips an end of the tension member; A fixing step of fixing the water stop jig to the tendon, The water stop jig is A first rigid body; A second rigid body; an elastic body disposed between the first rigid body and the second rigid body; a fastening shaft that is disposed in a laminate in which the first rigid body, the elastic body, and the second rigid body are laminated, and that changes the distance between the first rigid body and the second rigid body; a through hole penetrating the laminate and into which the tendon is inserted; In the installation step, the tendon is inserted into the through hole, In the installation step, when the tendon is inserted into the through hole, an inner diameter of the through hole in the elastic body is larger than an outer diameter of the tendon, In the fixing process, the tightening shaft reduces the distance between the first rigid body and the second rigid body to compress the elastic body, so that the inner surface of the through hole in the elastic body comes into contact with at least a portion of the outer surface of the tension member.

[0030] According to the manufacturing method of the water stop structure according to one aspect of the present disclosure, in the water stop jig used, before the elastic body is compressed, the inner diameter of the through hole is larger than the outer diameter of the tension material housed in the through hole. Therefore, when the water stop jig is installed on the tension material, damage to the tension material and the water stop jig can be prevented. Also, the workability when installing the water stop jig on the tension material can be improved.

[0031] After introducing tension into the tensioning material, the distance between the first rigid body and the second rigid body is changed using the tightening shaft, thereby compressing the elastic body and bringing the elastic body into contact with the tensioning material in the through hole, thereby regulating the movement of fluid along the length of the tensioning material.

[0032] (9) A manufacturing method of a water stop structure according to one aspect of the present disclosure is a manufacturing method of a water stop structure that regulates a flow of a fluid along a longitudinal direction of a tension member, comprising: a releasing step of allowing a water stop jig installed on the tendon, at least a portion of which is disposed within the concrete structure, to move along a longitudinal direction of the tendon; a tensioning step of pulling the tension member and tensioning the tension member; A fixing step of fixing the water stop jig to the tendon, The water stop jig is A first rigid body; A second rigid body; an elastic body disposed between the first rigid body and the second rigid body; a fastening shaft that is disposed in a laminate in which the first rigid body, the elastic body, and the second rigid body are laminated, and that changes the distance between the first rigid body and the second rigid body; a through hole penetrating the laminate and into which the tendon is inserted; In the releasing step, the tightening shaft expands a distance between the first rigid body and the second rigid body, and generates a gap between an inner surface of the through hole in the elastic body and an outer surface of the tension member, In the fixing process, the tightening shaft reduces the distance between the first rigid body and the second rigid body to compress the elastic body, so that the inner surface of the through hole in the elastic body comes into contact with at least a portion of the outer surface of the tension member.

[0033] According to a manufacturing method for a water-stopping structure according to one embodiment of the present disclosure, even after tension is reintroduced into the tensioning material, the water-stopping jig can be easily reinstalled on the tensioning material, and a water-stopping structure can be manufactured that restricts the movement of fluid along the length of the tensioning material.

[0034] (10) In (9), in the tensioning step, a fixing tool gripping an end of the tension material may be pulled to tension the tension material.

[0035] By pulling the fixing tool and tensioning the tensioning material, tensioning can be performed without removing the filler material even if the filler material is placed around the fixing tool, which shortens the time required for tensioning work and improves work efficiency.

[0036] (11) In (9), in the tensioning step, an end of the tendon may be pulled to tension the tendon.

[0037] By traction on the ends of the tendons and tensioning the tendons, the tension introduced into the tendons can be controlled particularly precisely.

[0038] (12) In any of (9) to (11), a removal step may be further included, prior to the releasing step, of removing a filler that has covered a fastener that grips the end of the tension member.

[0039] By carrying out the removal process, the filler around the fixing tools that grip the tension material is removed, exposing the fixing tools etc., making it possible to easily install jacks etc. during the tensioning process etc.

[0040] [Details of the embodiment of the present disclosure] Specific examples of a water-stopping jig, a water-stopping structure, and a method for manufacturing a water-stopping structure according to one embodiment of the present disclosure (hereinafter referred to as the "present embodiment") will be described below with reference to the drawings. Note that the present invention is not limited to these examples, but is indicated by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

[0041] In this specification, there are cases where the names of components are described with '1', '2', etc. added to them, such as 'first rigid body' and 'second rigid body'. '1', '2', etc. are written merely to distinguish between the components and to prevent confusion during description, and do not represent placement, priority, etc. For this reason, when there is no particular risk of confusion, they can simply be written as 'rigid body'. [Water stop fixture] An example of the configuration of the water stop jig of this embodiment will be described.

[0042] The water stop jig of this embodiment is a jig that restricts the flow of fluid along the length of the tendon. That is, although the water stop jig of this embodiment is described as "water stop," it is a jig that can restrict the movement of various fluids such as water and filler along the length of the tendon.

[0043] First, the water stop device of this embodiment will be described with reference to FIGS.

[0044] Fig. 1 shows a perspective view of a water-stopping jig 10 of this embodiment. Fig. 2A to Fig. 2C show examples of the configuration of the restricting member. Fig. 3A and Fig. 3B show cross-sectional views taken along a plane passing through the central axis of the through hole. Fig. 4 shows a cross-sectional view taken along a plane passing through the central axis of the tightening shaft. Fig. 5 and Fig. 6 show explanatory views of a water-stopping structure using the water-stopping jig of this embodiment.

[0045] In the drawings, the Z axis is the axis along the longitudinal direction of the tension member 30 on which the water-stopping jig 10 of this embodiment is installed, and is also the axis along the direction in which the first rigid body 11, the second rigid body, and the elastic body 13 are stacked. The XY plane is a plane perpendicular to the longitudinal direction of the tension member 30. All of the drawings are schematic views to explain the water-stopping jig and water-stopping structure of this embodiment, and are not drawings that accurately describe the sizes, etc.

[0046] As shown in FIG. 1, the water-stopping jig 10 may have a first rigid body 11, a second rigid body 12, an elastic body 13 arranged between the first rigid body 11 and the second rigid body 12, a through hole 14, and a tightening shaft 15.

[0047] The waterstop jig 10 of this embodiment can be installed on the tendon 30 so that the tendon 30 is located inside the through hole 14, as shown in Fig. 5 and Fig. 6, for example. Then, the tightening shaft 15 shortens the distance between the first rigid body 11 and the second rigid body 12 and compresses the elastic body 13, so that the inner surface of the through hole 14 in the elastic body 13 can come into contact with at least a part of the outer surface of the tendon 30. By disposing the waterstop jig 10 in contact with the tendon 30 around the tendon 30 in this manner, the waterstop jig 10 can regulate the flow of fluid along the longitudinal direction of the tendon 30.

[0048] Each member of the water stop tool 10 of this embodiment will be described below. (1) First rigid body, second rigid body The water-stopping jig 10 of this embodiment can have a first rigid body 11 and a second rigid body 12 that are arranged and laminated so as to sandwich an elastic body 13 therebetween.

[0049] The first rigid body 11 and the second rigid body 12 can sandwich and compress the elastic body 13 by shortening the distance between the two rigid bodies using the tightening shaft 15, thereby bringing the elastic body 13 into contact with the tendon 30. (Regarding shape and size) Although there are no particular limitations on the shape of the first rigid body 11 and the second rigid body 12, they are preferably plate-shaped since they are members that sandwich the elastic body 13. In addition, it is preferable that the first rigid body 11 and the second rigid body 12 are disk-shaped as shown in Fig. 1, since this makes it easier to close the opening of a pipe or the like in which the tension member is arranged.

[0050] Although there are no particular limitations on the thickness of the first rigid body 11 and the second rigid body 12, it is preferable that the thickness T11 and the thickness T12 are each 9 mm or more and 50 mm or less.

[0051] By setting the thickness T11 and the thickness T12 to 9 mm or more, deformation of the first rigid body 11 and the second rigid body 12 when the elastic body 13 is compressed can be suppressed.

[0052] Furthermore, by setting the thickness T11 and the thickness T12 to 50 mm or less, the water stop jig 10 can be prevented from becoming large, and handling can be improved.

[0053] The thickness T11 of the first rigid body 11 and the thickness T12 of the second rigid body 12 may be the same or different.

[0054] When the first rigid body 11 and the second rigid body 12 have a disk shape, their outer diameters are not particularly limited, and can be selected so as to cover the opening of a pipe or the like in which the water stop jig 10 is installed.

[0055] When the water-stopping jig 10 of this embodiment is disposed so as to be in contact with a fixing tool, a female cone or the like included in the fixing tool can also be used as the first rigid body 11 or the second rigid body 12. (About the materials) The material of the first rigid body 11 and the second rigid body 12 is not particularly limited, and may be one or more selected from, for example, metal, resin, etc. The materials of the first rigid body 11 and the second rigid body 12 may be different or the same.

[0056] The first rigid body 11 and the second rigid body 12 are preferably made of a material that is unlikely to cause scratches on the tendon placed in the through hole 14. For this reason, when the tendon has a coating such as an anticorrosive coating on its surface, the first rigid body 11 and the second rigid body 12 are preferably made of a material having a lower pencil hardness than the coating. Also, when the tendon does not have a coating, the first rigid body 11 and the second rigid body 12 are preferably made of a material having a lower hardness, for example a lower micro Vickers hardness, than the material of the tendon.

[0057] When the tendon has a coating, the material of the first rigid body 11 and the second rigid body 12 preferably has a pencil hardness of 6B or more and 4H or less, and is more preferably one or more types selected from, for example, polyethylene resin, nylon resin, polyvinyl chloride resin, polypropylene resin, and polyester resin. The pencil hardness is specified in JIS K 5600-5-4 (1999).

[0058] Furthermore, when the tension member does not have a coating, it is preferable that the material of the first rigid body 11 and the second rigid body 12 is one or more types selected from, for example, polyethylene resin, nylon resin, polyvinyl chloride resin, polypropylene resin, polyester resin, general structural rolled steel (SS material), welded structural rolled steel (SM material), mechanical structural carbon steel (SC material), chromium molybdenum steel (SCM material), etc.

[0059] It is also possible to use a material having a pencil hardness higher than that of the coating when the tendon has a coating, or a material having a hardness higher than the material of the tendon when the tendon does not have a coating, as the material of the first rigid body 11 and the second rigid body 12. In this case, it is preferable to dispose a material that can prevent the tendon from being damaged, such as the coating of the tendon or a material having a hardness lower than the material of the tendon, in the portion in contact with the tendon inside the through hole 14. (2) Elastic body When compressed by the first rigid body 11 and the second rigid body 12, the elastic body 13 comes into contact with the tension member placed in the through hole 14 and has the function of regulating the movement of fluid along the outer surface of the tension member. (Regarding shape and size) The shape of the elastic body 13 is not particularly limited, but it is preferably a plate shape. In addition, it is preferable that the elastic body 13 has a disk shape as shown in Fig. 1, because this makes it easier to close the opening of a pipe or the like in which the tendon is disposed.

[0060] The thickness of the elastic body 13 is not particularly limited, but it is preferable to select the thickness T13 so as to secure a sufficient contact area with the tendon and to regulate the movement of the fluid. The thickness T13 is preferably 20 mm or more and 50 mm or less.

[0061] By making the thickness T13 of the elastic body 13 20 mm or more, a sufficient contact area can be secured between the elastic body 13 and the tension member when the elastic body 13 is compressed, thereby making it possible to regulate the movement of fluid particularly along the longitudinal direction of the tension member.

[0062] Furthermore, by setting the thickness T13 of the elastic body 13 to 50 mm or less, the water stop jig 10 can be prevented from becoming large in size, and handling can be improved.

[0063] When the elastic body 13 has a disk shape, its outer diameter is not particularly limited, and can be selected so as to cover the opening of a pipe or the like in which the water stop jig 10 is installed. (About the materials) The material of the elastic body 13 is not particularly limited, but it is preferable that the material be one that can deform when compressed by the first rigid body 11 and the second rigid body 12. For this reason, the elastic body 13 is preferably rubber or rubber sponge.

[0064] The rubber is preferably a material having a type A durometer hardness of 20 degrees or more and 70 degrees or less. The rubber sponge is preferably a material having a type C durometer hardness of 20 degrees or more and 40 degrees or less. The type A durometer hardness and the type C durometer hardness are specified in JIS K 6253-3 (2023).

[0065] The material of the elastic body 13 is preferably one or more selected from the group consisting of chloroprene rubber, nitrile rubber, ethylene propylene diene rubber, natural rubber, and polyurethane resin. (3) Through holes The through hole 14 is a hole that accommodates the tensioning material when the water-stopping jig 10 of this embodiment is installed on the tensioning material, and is arranged to penetrate the laminate 100 which is made up of a first rigid body 11, an elastic body 13, and a second rigid body 12 stacked together.

[0066] The waterstop jig 10 of this embodiment can have through holes 14 in a number corresponding to the number of tendons to which the waterstop jig 10 of this embodiment is attached. Therefore, the waterstop jig 10 of this embodiment can have a plurality of through holes 14 as shown in FIG. 1, or can have only one through hole 14.

[0067] 3A and 3B show cross-sectional views of the through hole 14 taken along a plane passing through the central axis of the through hole 14. Fig. 3B shows a state in which the tendon 30 has been installed in the through hole 14. However, Fig. 3B shows a state before the elastic body 13 is compressed.

[0068] 3A and 3B, through hole 141 provided in first rigid body 11, through hole 143 provided in elastic body 13, and through hole 142 provided in second rigid body 12 are connected to form through hole 14. Through hole 141, through hole 143, and through hole 142, which are the through holes of each member, may have different inner diameters, but if they differ greatly, there is a risk that the elastic body 13 cannot be compressed in through hole 14. For this reason, it is preferable that through hole 141, through hole 143, and through hole 142 have the same inner diameter. (About size) 3B, before the elastic body 13 is compressed, the inner diameter D14 of the through hole 14 is larger than the outer diameter D30 of the tension member 30 inserted and housed in the through hole 14. By making the inner diameter D14 of the through hole 14 larger than the outer diameter D30 of the tension member 30 inserted and housed in the through hole 14, it is possible to prevent damage to the tension member 30 and the waterstop jig 10 when the waterstop jig 10 is installed on the tension member 30. It also improves the workability when installing the waterstop jig 10 on the tension member 30.

[0069] The width L33 of the gap 33 when the tension member 30 is installed in the through hole 14 is not particularly limited, but is preferably, for example, 0.5 mm or more and 2 mm or less. Setting the width L33 of the gap 33 to 0.5 mm or more improves the workability when installing the waterstop jig 10 on the tension member 30. Setting the width L33 of the gap 33 to 2 mm or less allows the inner surface 13A of the through hole 143 in the elastic body 13 and at least a part of the outer surface 30A of the tension member 30 to easily come into contact with each other when the elastic body 13 is compressed by the first rigid body 11 and the second rigid body 12.

[0070] The width L33 of the gap 33 can be determined by subtracting the outer diameter D30 of the tendon 30 from the inner diameter D14 of the through hole 14 and dividing the result by 2. (shape, chamfer) As shown in FIG. 3A, through hole 141 in first rigid body 11 and through hole 142 in second rigid body 12 may have chamfers 31 and 32 at openings 141A and 142A facing elastic body 13.

[0071] By providing the chamfers 31 and 32 to the through hole 141 of the first rigid body 11 and the through hole 142 of the second rigid body 12, when the elastic body 13 is compressed, the elastic body 13 deforms and is easily inserted into the chamfers 31 and 32. This makes it easier to increase the area of ​​the surface of the elastic body 13 facing the tendon 30 and ensure the contact area between the elastic body 13 and the tendon 30. This makes it easier to regulate the movement of fluid particularly along the longitudinal direction of the tendon 30.

[0072] The shapes of the chamfers 31 and 32 are not particularly limited and can be selected arbitrarily.

[0073] For example, as shown in Fig. 3A, chamfering can be performed so that the corners are cut off with a surface, which is called a C-surface. When chamfering 31 and chamfering 32 is performed so that the cross section of the chamfered portion is a right-angled isosceles triangle, it is preferable that the length L31 and length L32 of one side containing the right angle be 2 mm or more and 6 mm or less.

[0074] Furthermore, chamfering is not limited to forming a C-surface, but chamfering can also be performed by rounding the corners, which is called an R-surface. (4) Fastening shaft The fastening shaft 15 is arranged in a laminate 100 in which a first rigid body 11, an elastic body 13, and a second rigid body 12 are laminated, and the distance between the first rigid body 11 and the second rigid body 12 can be changed.

[0075] The tightening shaft 15 changes the distance between the first rigid body 11 and the second rigid body 12, thereby compressing the elastic body 13 and bringing the elastic body 13 into contact with the tension member 30 in the through hole 14, thereby restricting the movement of fluid along the length of the tension member 30. In addition, the compression of the elastic body 13 is released to create a gap 33 between the tension member 30 and the elastic body 13 in the through hole 14, making it possible to easily install, move, etc. the waterstop jig 10.

[0076] FIG. 4 shows a cross-sectional view of the fastening shaft 15 taken along a plane passing through the central axis of the fastening shaft 15.

[0077] 4, the fastening shaft 15 may be, for example, a bolt. In this case, the laminate of the first rigid body 11, the elastic body 13, and the second rigid body 12 may have a bolt hole 41 that penetrates the laminate and into which the fastening shaft 15 is inserted.

[0078] If the fastening shaft 15 is a bolt, a nut may be fitted onto the bolt to change the distance between the first rigid body 11 and the second rigid body 12. However, from the viewpoint of improving ease of handling when fastening the fastening shaft 15, the inner surface of the bolt hole 41 in the second rigid body 12 may have a female thread 121 that fits with a male thread 151 provided on the fastening shaft 15, as shown in Fig. 4. In other words, the inner surface of the bolt hole 41 in the second rigid body 12 may be threaded.

[0079] Since the inner surface of the bolt hole 41 of the second rigid body 12 has a female thread 121 that fits with a male thread 151 provided on the fastening shaft 15, the fastening shaft 15 can be easily fastened or loosened without holding down a nut, etc. This improves the workability when installing or moving the waterstop jig 10.

[0080] As shown in Fig. 1, the waterstop jig 10 may have a plurality of fastening shafts 15. In order to be able to evenly change the distance between the first rigid body 11 and the second rigid body 12, the fastening shafts 15 are preferably arranged along the outer periphery of the first rigid body 11 and the second rigid body 12 as shown in Fig. 1. In addition, it is preferable to install the fastening shafts 15 so that the distance between adjacent fastening shafts 15 is even.

[0081] The fastening shaft 15 can be arranged in a region other than the region along the outer periphery of the first rigid body 11 and the second rigid body 12. When the region along the outer periphery of the first rigid body 11 and the second rigid body 12 in which the fastening shaft 15 is arranged in FIG.

[0082] By arranging the fastening shaft 15 within the internal region 120, for example between the through holes 14, when the fastening shaft 15 reduces the distance between the first rigid body 11 and the second rigid body 12, the elastic body 13 can be compressed more uniformly, thereby improving the water-stopping performance. (5) Regulatory components The waterstop jig 10 of this embodiment may have a restricting member that covers at least a part of the outer surface of the elastic body 13, depending on the degree to which the distance between the first rigid body 11 and the second rigid body 12 is changed and the amount of deformation of the elastic body 13. The restricting member is a member that restricts the elastic body 13 from expanding outward when it is compressed.

[0083] 2A, 2B, and 2C show examples of the configuration of the restricting member. Although Fig. 2A, 2B, and 2C are cross-sectional views taken along a plane passing through the central axis of the water-stopping jig 10 of this embodiment, they are explanatory views of the restricting member 21, and therefore the through-hole 14 and the fastening shaft 15 are omitted.

[0084] 2A, the water-stopping jig 10 may have a restricting member 21 that covers at least a portion of the outer surface 131 of the elastic body 13. The restricting member 21 shown in FIG. 2A is a member separate from the first rigid body 11, the second rigid body 12, and the elastic body 13, and may have, for example, a cylindrical shape. It is preferable that the restricting member 21 covers the entire outer surface 131 of the elastic body 13.

[0085] The restricting member 21 shown in FIG. 2A may have, for example, a metal band or the like whose inner diameter can be changed by tightening, and may also have a polyethylene tube, a rubber sheet, or the like on the surface that comes into contact with the elastic body 13, if necessary.

[0086] Furthermore, as shown in FIGS. 2B and 2C, the restricting member 21 may be integral with the first rigid body 11 or the second rigid body 12. In the embodiment shown in FIG.

[0087] In the case of FIG. 2B, the restricting member is integrated with the first rigid body 11 and constitutes a restricting member portion 111 within the first rigid body 11. In the case of FIG.

[0088] 2C, the restricting member includes a first restricting member 21A and a second restricting member 21B. The first restricting member 21A is integrated with the first rigid body 11 and constitutes a restricting member portion 111 within the first rigid body 11. The second restricting member 21B is integrated with the second rigid body 12 and constitutes a restricting member portion 112 within the second rigid body 12.

[0089] The waterstop jig 10 of this embodiment has the restricting member 21, which makes it possible to prevent the elastic body 13 from expanding to the outer periphery instead of into the through hole 14 when the elastic body 13 is compressed by the first rigid body 11 and the second rigid body 12. Therefore, the waterstop jig 10 has the restricting member 21, which makes it possible to improve the adhesion between the tension member 30 arranged in the through hole 14 and the elastic body 13, and to improve the waterstop performance of the waterstop jig 10. [Water-stopping structure] A configuration example of the water stopping structure of this embodiment will be described.

[0090] The water stop structure of the present embodiment may include the water stop jig according to one aspect of the present disclosure. Therefore, some of the matters that have already been described will not be described.

[0091] The water stop structure of the present embodiment is a structure in which the water stop jig according to one aspect of the present disclosure is installed on a tendon, and thus the water stop structure of the present embodiment is a structure that regulates the flow of fluid along the longitudinal direction of the tendon.

[0092] A configuration example of the waterproof structure of this embodiment will be described with reference to Figs. (1) First embodiment As shown in Figure 5, the water-stopping structure 50 of this embodiment may include a tension member 30, at least a portion of which is arranged within a through hole of a concrete structure 51, a fixing device 55 that grips an end portion 30B of the tension member 30, and a water-stopping jig 10.

[0093] The location of the waterstop jig 10 is not particularly limited, and it can be installed in a location where it is required to regulate the flow of fluid. For example, the waterstop jig 10 can be placed along the length of the tendon 30 at a position closer to the concrete structure 51 than the fixing device 55, i.e., between the fixing device 55 and the concrete structure 51, so that the filler placed around the fixing device 55 does not enter the concrete structure 51.

[0094] By providing the water-stopping structure 50 with the water-stopping jig 10 disposed between the fixing device 55 and the concrete structure 51, it is possible to prevent the filler 57 disposed to protect the periphery of the fixing device 55 including the end 30B of the tendon 30 from penetrating into the sheath 52 of the concrete structure 51. This makes it possible to reduce the amount of filler 57 used and thus the costs. (2) Second embodiment The water-stopping structure 60 of this embodiment shown in FIG. 6 can also have a tension member 30, a fixing device 55 that grips the end portion 30B of the tension member 30, a water-stopping jig 10A, and a water-stopping jig 10B.

[0095] In the water-stopping structure 60 shown in Figure 6, the water-stopping jig 10B can be positioned along the length of the tension member 30 at a position farther from the concrete structure 51 than the fixing device 55, i.e., between the end 30B of the tension member 30 and the fixing device 55.

[0096] By providing the water-stopping structure 60 in which the water-stopping jig 10B is disposed between the end 30B of the tendon 30 and the fixing device 55, even if the excess length 301 of the tendon 30 is lengthened, the filler 57 can be disposed only around the fixing device 55. This reduces the amount of filler 57 used, thereby reducing costs.

[0097] As shown in the water stop structure 60, the water stop jig 10 can be provided at multiple locations, and the water stop jig 10A can be disposed between the fixing device 55 and the concrete structure 51. (3) Regarding each component of the water-stopping structure (Water stop fixture) The water-stopping jig 10 may have a first rigid body 11, a second rigid body 12, an elastic body 13 arranged between the first rigid body 11 and the second rigid body 12, a through hole 14, and a tightening shaft 15.

[0098] The through hole 14 is a hole for inserting and accommodating the tendon 30, and is provided so as to penetrate the laminate 100 in which the first rigid body 11, the elastic body 13, and the second rigid body 12 are laminated.

[0099] The fastening shaft 15 is arranged in a laminate 100 in which a first rigid body 11, an elastic body 13, and a second rigid body 12 are laminated, and the distance between the first rigid body 11 and the second rigid body 12 can be changed.

[0100] Before the tightening shaft 15 reduces the distance between the first rigid body 11 and the second rigid body 12 and compresses the elastic body 13, the inner diameter D14 of the through hole 14 in the elastic body 13 can be made larger than the outer diameter D30 of the tension member 30 to be inserted into the through hole 14.

[0101] Then, the tightening shaft 15 reduces the distance between the first rigid body 11 and the second rigid body 12 and compresses the elastic body 13, thereby enabling the inner surface 13A of the through hole 14 in the elastic body 13 to come into contact with at least a portion of the outer surface 30A of the tension member 30 (see Figure 3B).

[0102] The water stop jig 10 has already been explained, so an explanation thereof will be omitted. (Tension material) The tendons 30 may be placed within a sheath 52 which is placed within a concrete structure 51 .

[0103] The tendons 30 are not particularly limited, and any tendons capable of introducing tension into the concrete structure 51 can be used. As the tendons 30, for example, one or more types selected from PC steel strands, PC steel bars, etc., can be used. Note that the "PC" in PC steel strands, etc., is an abbreviation for "prestressed concrete."

[0104] The number of the tendons 30 in the water stop structure 50 is not particularly limited, and may be one or may be multiple as shown in Figs.

[0105] The tendons 30 may also have a corrosion protection coating on their surfaces.

[0106] The material of the anticorrosive coating is not particularly limited, and may be, for example, one or more selected from zinc plating, resin, etc. The anticorrosive coating may be composed of multiple layers, such as zinc plating and a resin coating.

[0107] The resin may be, for example, a thermosetting resin, and is preferably one or more types selected from epoxy resin, polyethylene resin, and the like.

[0108] By providing the anticorrosive coating on the surface of the tendon 30, the installed tendon 30 can be prevented from corroding and the like, and its durability can be increased. (fixtures, anchor plates) The water-stopping structure 50 may have an anchor 55 that grips the end 30B of the tendon 30.

[0109] The configuration of the fixing tool 55 is not particularly limited, and various fixing tools can be used depending on the type of the tension member 30, etc. For example, when the water stop structure 50 has a plurality of tension members 30, a fixing tool 55 capable of collectively holding the plurality of tension members 30 can be used, as shown in Fig. 5, or a fixing tool can be provided for each tension member 30. The fixing tool 55 can have, for example, a female cone 551 and a male cone 552. In Fig. 5, the female cone 551 can also be used as the first rigid body 11.

[0110] The water-stopping structure 50 may also have an anchor plate 53 disposed between the fastener 55 and the concrete structure 51 for supporting a load applied to the fastener 55 .

[0111] The anchor plate 53 is a thick steel piece, and may be called a casting plate, etc. The anchor plate 53 may be buried in the concrete structure 51 as shown in Figs. 5 and 6, or may be placed on the surface of the concrete structure 51. (Grout cap) In the water stop structure 50 and the water stop structure 60, in order to protect the fixing device 55 and the periphery of the fixing device 55, a filler 57 can also be placed around the fixing device 55. For this reason, the water stop structure 50 and the water stop structure 60 can also have a grout cap 56 that functions as a formwork for filling the filler 57 and can protect the periphery of the fixing device 55.

[0112] The grout cap 56 may also have a supply port 561 for supplying the filler material 57 into the grout cap 56, an exhaust port 562, and the like. (filling material) The material of the filler 57 is not particularly limited, but is preferably a non-shrink grout agent, and for example, one or more types selected from cement mortar, epoxy resin mortar, water glass grout, etc. can be used. (Spacer) Depending on the size of the water stop jig 10, it may not be possible to install it inside the sheath 52 of the concrete structure 51. Therefore, the water stop structure 50 or the water stop structure 60 may have a spacer 54 for installing the water stop jig 10.

[0113] Specifically, for example, the water-stopping structure 50 or the water-stopping structure 60 may further have a spacer 54 that is arranged between the concrete structure 51 and the fixing device 55 and that accommodates at least a portion of the water-stopping jig 10 therein.

[0114] The water stop structure 50, the water stop structure 60 having the spacer 54 can increase the degree of freedom in the installation position of the water stop jig 10. In addition, the spacer 54 can be installed between the fixing device 55 and the anchor plate 53, and can support the tension applied to the tension member 30 via the fixing device 55.

[0115] The spacer 54 can have a gap 541 therein for accommodating the water-stopping jig 10. The shape and size of the gap 541 are not particularly limited, but the shape and size can be selected so that the water-stopping jig 10 can be accommodated and the fixing tool 55 does not fall into the gap 541.

[0116] For example, the gap 541 may have a cylindrical shape, i.e., the spacer 54 may have a cylindrical shape.

[0117] In this case, the inner diameter D541 of the gap 541 can be made larger than the outer diameter D10 of the water-stopping jig 10 and shorter than the major axis length L55 of the fixing tool 55. (cover) As in the watertight structure 60 shown in FIG. 6, the surplus length 301 can be made long in consideration of cases in which the tension member 30 needs to be re-tensioned.

[0118] In this case, the waterproof structure 60 may also have a cover 61 for protecting the excess length portion 301 .

[0119] Although a filler can be placed inside the cover 61, it is preferable not to place a filler inside the cover 61 since the filler will need to be removed when re-tensioning or the like is performed. [Water-stopping structure manufacturing method] A method for manufacturing the water-stopping structure of the present embodiment will be described. The water-stopping structure manufactured by the method for manufacturing the water-stopping structure of the present embodiment has a water-stopping tool according to one aspect of the present disclosure, and can manufacture the water-stopping structure according to one aspect of the present disclosure. Therefore, some of the items that have already been described will not be described. (1) First embodiment The manufacturing method of the water stop structure of the present embodiment relates to a manufacturing method of a water stop structure that regulates the flow of fluid along the longitudinal direction of a tendon.

[0120] The manufacturing method of the water stopping structure of the present embodiment can be carried out according to a flow 70 shown in FIG. 7, and can include an installation step (S71), a tensioning step (S72), and a fixing step (S73).

[0121] Each step will be described below. (1) Installation process (S71) In the installation step (S71), the water stop jig 10 can be installed on the tendon 30, at least a portion of which is disposed in the concrete structure.

[0122] In the installation step (S71), specifically, the tension member 30 is inserted into the through hole 14 of the waterstop jig 10, and the waterstop jig 10 can be installed on the tension member 30. The waterstop jig 10 can be disposed at any position on the tension member 30.

[0123] In the installation step (S71), when the tendon 30 is inserted into the through hole 14, the elastic body 13 can be placed in an uncompressed state by the first rigid body 11 and the second rigid body 12. Therefore, when the tendon 30 is inserted into the through hole 14 in the installation step (S71), the inner diameter D14 of the through hole 14 in the elastic body 13 is larger than the outer diameter D30 of the tendon 30.

[0124] The water stop jig 10 has already been explained, so an explanation thereof will be omitted. (2) Tension process (S72) In the tensioning step (S72), tension is introduced into the tendon 30, and a fastener 55 for gripping the end 30B of the tendon 30 can be installed.

[0125] In the tensioning step (S72), the method of applying tension to the tendons 30 is not particularly limited, and tension can be applied by pulling the tendons 30 with a jack or the like. (3) Fixing process (S73) In the fixing step (S73), the waterstop jig 10 can be fixed to the tendon 30.

[0126] In the fixing step (S73), the tightening shaft 15 of the waterstop jig 10 can reduce the distance between the first rigid body 11 and the second rigid body 12 to compress the elastic body 13. This allows the inner surface 13A of the through hole 14 in the elastic body 13 to come into contact with at least a part of the outer surface 30A of the tendon 30.

[0127] 6, when the waterstop jig 10B is installed between the fixing device 55 and the end 30B of the tension member 30, the installation step (S71) can be performed after the tensioning step (S72). Also, when multiple waterstop jigs 10 are installed, as in the waterstop structure shown in FIG. 6, the installation step (S71) and the fixing step (S73) can be performed multiple times.

[0128] According to the manufacturing method of the waterstop structure of this embodiment, in the waterstop jig 10 used, before the elastic body 13 is compressed, the inner diameter D14 of the through hole 14 is larger than the outer diameter D30 of the tension member 30 housed in the through hole 14. Therefore, when the waterstop jig 10 is installed on the tension member 30, damage to the tension member 30 and the waterstop jig 10 can be prevented. Also, the workability when installing the waterstop jig 10 on the tension member 30 can be improved.

[0129] After introducing tension into the tension member 30, the tightening shaft 15 changes the distance between the first rigid body 11 and the second rigid body 12, thereby compressing the elastic body 13 and bringing the elastic body 13 into contact with the tension member 30 at the through hole 14, thereby regulating the movement of fluid along the length of the tension member 30. (2) Second embodiment In the first embodiment, the case where the waterstop jig 10 is installed on the newly installed tendon 30 and a waterstop structure is manufactured has been described as an example, but the manufacturing method of the waterstop structure of this embodiment is not limited to this form. For example, the waterstop jig 10 fixed to the tendon 30 can be moved, tension is applied to the tendon 30, and then the waterstop structure can be manufactured again.

[0130] In this case as well, the manufacturing method of the water-stopping structure of this embodiment relates to a manufacturing method of a water-stopping structure that regulates the flow of fluid along the longitudinal direction of the tension member. The manufacturing method of the water-stopping structure of this embodiment can be carried out according to the flow 80 shown in Fig. 8, and can include a releasing step (S81), a tensioning step (S82), and a fixing step (S83).

[0131] Each step will be described below. (1) Opening process (S81) In the releasing step (S81), the waterstop jig 10 that has been installed on the tendon 30, at least a portion of which is disposed within the concrete structure, can be made movable along the longitudinal direction of the tendon 30.

[0132] Specifically, in the release process (S81), the tightening shaft 15 expands the distance between the first rigid body 11 and the second rigid body 12, thereby creating a gap between the inner surface 13A of the through hole 14 in the elastic body 13 and the outer surface 30A of the tension member 30. (2) Tension process (S82) In the tensioning step (S82), the tension member 30 can be pulled and tensioned.

[0133] In the tensioning step (S82), the method of applying tension to the tendons 30 is not particularly limited, and tension can be applied by pulling the tendons 30 with a jack or the like.

[0134] When the water-stopping structure has multiple tension members 30, such as the water-stopping structure 50 or the water-stopping structure 60, in the tensioning process (S82), the fixing device 55 holding the end 30B of the tension member 30 can be pulled by a jack or the like to tension the tension member 30.

[0135] By pulling the fixing tool 55 and tensioning the tensioning material 30, tensioning can be performed without removing the filler material, even if the filler material is placed around the fixing tool 55. This reduces the time required for tensioning work and improves work efficiency.

[0136] Furthermore, when the fixing tool 55 holds a plurality of tension members 30, the plurality of tension members 30 can be tensioned collectively, which also improves work efficiency from this viewpoint.

[0137] In the tensioning step (S82), the end 30B of the tension member 30 may be pulled to tension the tension member 30.

[0138] By pulling on the end 30B of the tendon and tensioning the tendon 30, the tension introduced into the tendon 30 can be controlled particularly precisely. (3) Fixing process (S83) In the fixing step (S83), the waterstop jig 10 can be fixed to the tendon 30.

[0139] In the fixing step (S83), the tightening shaft 15 of the waterstop jig 10 can reduce the distance between the first rigid body 11 and the second rigid body 12 to compress the elastic body 13. This allows the inner surface 13A of the through hole 14 in the elastic body 13 to come into contact with at least a part of the outer surface 30A of the tendon 30.

[0140] When a plurality of water-stopping jigs 10 are installed as in the water-stopping structure 60 shown in FIG. 6, the releasing step (S81) and the fixing step (S83) may be performed multiple times. (4) Removal process The manufacturing method for the water stopping structure of the present embodiment may further include a removing step prior to the opening step (S81).

[0141] In the removing step, the filler that has covered the fasteners 55 gripping the ends 30B of the tendons 30 before the releasing step (S81) can be removed.

[0142] By performing the removal process, the filler around the fixing device 55 that holds the end 30B of the tensioning material 30 is removed, exposing the fixing device 55 etc., making it possible to easily install a jack etc. in the tensioning process (S82) etc.

[0143] According to the manufacturing method of the water-stopping structure of this embodiment, even after tension is introduced into the tensioning material 30, the water-stopping jig 10 can be easily reinstalled on the tensioning material 30, and a water-stopping structure can be manufactured that restricts the movement of fluid along the longitudinal direction of the tensioning material 30. [Explanation of symbols]

[0144] 10 Water stop fixture 10A Water Stop Tool 10B Water stop jig D10 outer diameter 11 First rigid body 110 Outer area 120 Internal area 12 Second rigid body 121 Female thread 13 Elastic Body 13A inner surface 131 External surface 14 Through hole 141 Through hole 142 Through hole 143 Through hole D14 Inner diameter 141A opening 142A opening 15 Fastening shaft 151 Male thread 100 Laminate T11 Thickness T12 Thickness T13 Thickness 21 Regulatory components 21A First Restricting Member 21B Second restricting member 111 Regulatory member 112 Regulating member part 30 Tensor material D30 Outer diameter 30A outer surface 30B end 301 Extra length 31 Chamfering 32 Chamfering L31 Length L32 Length 33 Gap L33 width 41 Bolt hole 50 Water-stopping structure 51 Concrete Structure 52 Sheath 53 Anchor Plate 54 Spacer 541 void D541 Inner diameter 55 Fixture L55 Long axis length 551 Mescon 552 Oskone 56 Grout Cap 561 Supply Inlet 562 Exhaust port 57 Filling material 60 Water-stopping structure 61 Cover 70 Flow S71 Installation process S72 Tension process S73 Fixed process 80 Flow S81 Opening process S82 Tension process S83 Fixed process

Claims

1. A water stop device that regulates the flow of a fluid along a longitudinal direction of a tendon, A first rigid body; A second rigid body; an elastic body disposed between the first rigid body and the second rigid body; a fastening shaft that is disposed in a laminate in which the first rigid body, the elastic body, and the second rigid body are laminated, and that changes the distance between the first rigid body and the second rigid body; A through hole penetrating the laminate, A water-stopping jig, wherein an inner diameter of the through hole is larger than an outer diameter of the tension material to be inserted into the through hole.

2. The water stop jig according to claim 1 , further comprising a restricting member covering at least a portion of an outer surface of the elastic body.

3. 3. The water stop jig according to claim 1, wherein the through holes in the first rigid body and the second rigid body are chamfered at openings facing the elastic body.

4. The fastening shaft is a bolt, the laminate has a bolt hole penetrating the laminate and into which the fastening shaft is inserted, 3. The water stop jig according to claim 1, wherein an inner surface of the bolt hole in the second rigid body has a female thread that mates with a male thread provided on the fastening shaft.

5. A water-stopping structure that regulates the flow of a fluid along a longitudinal direction of a tendon, The tendon is at least partially disposed within a concrete structure; and A fixing tool that grips an end of the tendon; a water stopper arranged along the longitudinal direction of the tension member at a position closer to the concrete structure than the anchoring device; The water stop jig is A first rigid body; A second rigid body; an elastic body disposed between the first rigid body and the second rigid body; a fastening shaft that is disposed in a laminate in which the first rigid body, the elastic body, and the second rigid body are laminated, and that changes the distance between the first rigid body and the second rigid body; a through hole penetrating the laminate and into which the tendon is inserted; Before the tightening shaft reduces the distance between the first rigid body and the second rigid body to compress the elastic body, an inner diameter of the through hole in the elastic body is larger than an outer diameter of the tendon, A water-stopping structure in which the tightening shaft reduces the distance between the first rigid body and the second rigid body to compress the elastic body, causing the inner surface of the through hole in the elastic body to come into contact with at least a portion of the outer surface of the tension material.

6. The water stop structure according to claim 5 , further comprising a spacer disposed between the concrete structure and the fastener, the spacer housing at least a portion of the water stop jig therein.

7. A water-stopping structure that regulates the flow of a fluid along a longitudinal direction of a tendon, The tendon is at least partially disposed within a concrete structure; and A fixing tool that grips an end of the tendon; a water stopper arranged along the longitudinal direction of the tension member at a position farther from the concrete structure than the anchoring device; The water stop jig is A first rigid body; A second rigid body; an elastic body disposed between the first rigid body and the second rigid body; a fastening shaft that is disposed in a laminate in which the first rigid body, the elastic body, and the second rigid body are laminated, and that changes the distance between the first rigid body and the second rigid body; a through hole penetrating the laminate and into which the tendon is inserted; Before the tightening shaft reduces the distance between the first rigid body and the second rigid body to compress the elastic body, an inner diameter of the through hole in the elastic body is larger than an outer diameter of the tendon, A water-stopping structure in which the tightening shaft reduces the distance between the first rigid body and the second rigid body to compress the elastic body, causing the inner surface of the through hole in the elastic body to come into contact with at least a portion of the outer surface of the tension material.

8. A manufacturing method of a water stop structure that regulates a flow of a fluid along a longitudinal direction of a tendon, comprising: an installation step of installing a water stop jig on the tendon, at least a portion of which is disposed within the concrete structure; a tensioning step of introducing tension into the tension member and installing a fastener that grips an end of the tension member; A fixing step of fixing the water stop jig to the tendon, The water stop jig is A first rigid body; A second rigid body; an elastic body disposed between the first rigid body and the second rigid body; a fastening shaft that is disposed in a laminate in which the first rigid body, the elastic body, and the second rigid body are laminated, and that changes the distance between the first rigid body and the second rigid body; a through hole penetrating the laminate and into which the tendon is inserted; In the installation step, the tendon is inserted into the through hole, In the installation step, when the tendon is inserted into the through hole, an inner diameter of the through hole in the elastic body is larger than an outer diameter of the tendon, A manufacturing method for a water-stopping structure, in which, in the fixing process, the tightening shaft reduces the distance between the first rigid body and the second rigid body to compress the elastic body, thereby causing the inner surface of the through hole in the elastic body to come into contact with at least a portion of the outer surface of the tension material.

9. A manufacturing method of a water stop structure that regulates a flow of a fluid along a longitudinal direction of a tendon, comprising: a releasing step of allowing a water stop jig installed on the tendon, at least a portion of which is disposed within the concrete structure, to move along a longitudinal direction of the tendon; a tensioning step of pulling the tension member and tensioning the tension member; A fixing step of fixing the water stop jig to the tendon, The water stop jig is A first rigid body; A second rigid body; an elastic body disposed between the first rigid body and the second rigid body; a fastening shaft that is disposed in a laminate in which the first rigid body, the elastic body, and the second rigid body are laminated, and that changes the distance between the first rigid body and the second rigid body; a through hole penetrating the laminate and into which the tendon is inserted; In the releasing step, the tightening shaft expands a distance between the first rigid body and the second rigid body, and generates a gap between an inner surface of the through hole in the elastic body and an outer surface of the tendon, A manufacturing method for a water-stopping structure, in which, in the fixing process, the tightening shaft reduces the distance between the first rigid body and the second rigid body to compress the elastic body, thereby causing the inner surface of the through hole in the elastic body to come into contact with at least a portion of the outer surface of the tension material.

10. The method for manufacturing a water-stopping structure according to claim 9 , wherein in the tensioning step, a fastener gripping an end of the tensioning material is pulled to tension the tensioning material.

11. The method for manufacturing a water stop structure according to claim 9 , wherein in the tensioning step, an end of the tensioning material is pulled to tension the tensioning material.

12. The method for manufacturing a water-stopping structure according to any one of claims 9 to 11, further comprising a removal step of removing a filler that covered a fastener that grips the end of the tension member before the release step.

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