JP2013036263A - Method for temporarily fixing flexible expansion joint and temporary fixing jig used for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for temporarily fixing a flexible expansion joint which can efficiently temporarily fix a flexible expansion joint to a top surface and a side surface and can temporarily fix the flexible expansion joint at a predetermined position without disturbing permanent fixing work, and a temporary fixing jig used for the method.SOLUTION: A holding arm part 33 mounted to a fixed body part 31 fixed to an anchor bolt 24 is rotated to hold a flexible expansion joint 23 by putting a tip pressing part 32 to the expansion joint 23, and this state is maintained, which creates a temporary fixed state. As a result, even if the flexible expansion joint is a flexible expansion joint which is not directly fixed to a ceiling part or a side surface part with an anchor bolt, it can be easily temporarily fixed to enable performing construction with high working efficiency. The installation width of the flexible expansion joint 23 is regulated and controlled by putting the expansion joint 23 to the fixing body part 31 and standardizing a fixed position.

Description

  TECHNICAL FIELD The present invention relates to a method for temporarily fixing a flexible expansion joint and a temporary fixing jig used therefor, in which anchors are attached to joints of concrete structures such as water channels constructed with concrete, water treatment facilities, tunnels, and joint grooves. A flexible expansion joint that is not directly fixed with a bolt can be easily temporarily fixed when it is installed on a top surface portion or a side surface portion.

  In the joints of walls such as waterways, water tanks or underground gutters built in the ground such as joint grooves, which are concrete structures constructed with concrete, water is stopped inside and outside and the concrete structures on both sides of the walls are unequal. It is necessary to allow expansion and contraction of the wall due to subsidence, earthquake displacement, temperature change, etc., and flexible with flexible expansion joints such as rubber and synthetic resin waterstops inside the concrete structure Water stop structure is adopted.

  As such a flexible water-stopping structure, for example, there is a water-stopping structure disclosed in Patent Document 1, and, as shown in FIG. 16, U is placed in the middle of the joint material 1 in which an elastic material and one or more stress materials are embedded. While forming the groove-shaped extra length part 2 of a type | mold, and forming the joint material 1 by forming the latching parts 3 and 3 on both sides, the recessed part 6 formed in the joint part 5 between the concrete structures 4 and 4 The extra length portion 2 of the joint material 1 is accommodated in the joint member 1, and the engaging portions 3 and 3 on both sides are attached via anchor bolts 7 and presser plates 8 embedded and fixed in the concrete structures 4 and 4, respectively. Thereby, the protrusion of the joint material 1 to the inside of the concrete structures 4 and 4 is eliminated, and resistance to flow in the case of using a water channel is prevented.

  Such a water stop structure is constructed not only for newly constructing a concrete structure, but also for providing seismic reinforcement by being provided on an existing concrete structure, or for replacement and repair.

However, if this water-stopping structure is to be applied to an existing concrete structure such as a culvert, it is necessary to drill anchor bolts 7 for fixing the joint material 1 in the concrete structures 4 and 4 and attach them to the concrete structure. In some cases, it hits 4 or 4 rebars, and it is often necessary to attach the anchor bolt 7 by shifting the drilling position.
For this reason, it is necessary to measure the bolt pitch at the site when the anchor bolt 7 has been installed, and to manufacture the presser plate 8, joint material 1 and the like according to the result, and to perform the drilling and drilling. However, there is a problem that the construction period is long.

  Therefore, a flexible water-stop structure has been proposed in which a necessary member can be manufactured in advance regardless of the mounting position of the anchor bolt, and a flexible water-stop member can be easily constructed (Patent Literature). 2, 3), for example, in the flexible waterstop structure 10 of Patent Document 2, as shown in FIG. 17, a flexible stretchable portion 13a disposed across the joint portion 12 between the concrete structures 11, 11 is provided. The pressing member 17 is applied to the attachment portions 13b at both ends of the flexible expansion joint 13 provided, and the pressing member 17 is pressed by the distal end portion 18a of the fixing member 18 to which the intermediate portion 18c is supported and fixed by the anchor bolt 14. By attaching the base end portion 18 b to the concrete structure 11, the flexible expansion joint 13 can be attached by pressing the holding member 17 at a predetermined position regardless of the attachment position of the anchor bolt 14. So that it is.

JP 2000-64446 A JP 2008-280748 A JP 2010-150807 A

According to such a flexible waterproof structure 10, although a necessary member can be manufactured in advance regardless of the mounting position of the anchor bolt, the flexible expansion joint is not directly fixed by the anchor bolt. During construction, anchor bolts cannot be temporarily fixed using anchor bolts. In particular, when attaching to the top surface or side surfaces, the presser member is applied to the anchoring portion while the operator lifts the anchor bolt. There is a problem that the pressing member must be pressed by the fixing member attached to the head, which requires a lot of workers, and requires a lot of work and poor working efficiency.
On the other hand, it is possible to temporarily fix the flexible expansion joint by hanging a flat plate or string over the anchor bolts on both sides with the operator lifted up. Further, there is a problem that a flat plate, a string, or the like becomes an obstacle, and it is necessary to secure an installation space for the pressing member by removing them, and the temporary fixing by the flat plate, the string, etc. must be released.
Further, since the flexible expansion joint expands and contracts freely to some extent in the width direction, an operation for managing the installation width is required, and there is a problem that the working efficiency is further deteriorated.

  The present invention has been made in view of such a conventional technique, and can be efficiently temporarily fixed to the top surface portion or the side surface portion, and temporarily fixed at a predetermined position without interfering with the main fixing operation. An object of the present invention is to provide a method for temporarily fixing a flexible expansion joint that can be used, and a temporary fixing jig used therefor.

In order to solve the above-mentioned problem, the temporary fixing method of the flexible expansion joint according to claim 1 of the present invention is a method of forming the flanges at both end edges of the flexible expansion joint disposed across the joint between the concrete structures. When temporarily fixing the flexible expansion joint to be attached by pressing the attachment portion with a fixing member fixed to the anchor bolt via the pressing member,
The fixing bolt body is fixed to the anchor bolt, and the tip pressing portion of the presser arm portion rotatably provided on the fixing bolt main body is pressed against the flexible expansion joint, and the pressing state by the presser arm portion is pressed. It is characterized by holding and temporarily fixing.

According to a second aspect of the present invention, there is provided a method for temporarily fixing a flexible expansion joint, wherein a clamp member is attached to both ends of a flexible expansion joint disposed across a joint between concrete structures. When temporarily fixing a flexible expansion joint that is pressed and attached with a fixing member fixed to an anchor bolt via
The fixing body is fixed to the anchor bolt, and the tip pressing portion of the presser arm provided on the fixing portion is pressed against the flexible expansion joint, and the pressing state by the pressing arm is held temporarily. It is characterized by being fixed.

  According to a third aspect of the present invention, in addition to the configuration of the first or second aspect, the presser arm portion opens the space for installing the presser member and presses the tip. The flexible expansion joint is pressed by a portion.

  According to a fourth aspect of the present invention, in addition to the structure according to any one of the first to third aspects, the holding state of the pressed state by the presser arm portion is maintained by a toggle link mechanism or a spring. This is characterized in that it is performed by the biasing means.

  According to a fifth aspect of the present invention, in addition to the configuration according to the second aspect, the flexible expansion joint is temporarily fixed to the anchor bolt by forming the fixing portion main body into a U-shape with the anti-anchor bolt side opened. It is characterized by being fixed.

  According to a sixth aspect of the present invention, in addition to the configuration according to the fifth aspect, the flexible expansion joint is temporarily fixed to either one of both sides of the opening of the fixing portion main body or both sides of the presser arm. A plurality of holes are formed, and the position of the presser arm is adjusted and fixed according to the thickness of the flexible expansion joint.

  According to a seventh aspect of the present invention, in addition to the configuration according to the second aspect, the flexible expansion joint is temporarily fixed by the presser arm fixed to the fixing portion main body. It is characterized by being pressed and temporarily fixed.

According to an eighth aspect of the present invention, there is provided a method for temporarily fixing a flexible expansion joint, wherein a clamp member is used to fix the adhesive portions at both end edges of the flexible expansion joint disposed across a joint between concrete structures. When temporarily fixing a flexible expansion joint that is pressed and attached with a fixing member fixed to an anchor bolt via
The fixing body is fixed to the anchor bolt, the fixing body and the presser arm are tilted and movably connected up and down by a spring, and the flexible expansion joint is pressed at the tip of the presser arm. The pressing state by the portion is held and temporarily fixed.

According to a ninth aspect of the present invention, there is provided a method for temporarily fixing a flexible expansion joint, wherein a pressing member is used to fix the adhesive portions at both end edges of a flexible expansion joint disposed across a joint between concrete structures. When temporarily fixing a flexible expansion joint that is pressed and attached with a fixing member fixed to an anchor bolt via
Fixing both ends of the fixed portion main body provided with a strut portion and a connecting portion configured in a gate shape straddling the flexible expansion joint on the anchor bolt, and a presser portion protruding from the connecting portion of the fixed portion main body While pressing the flexible expansion joint, the pressing state by the pressing portion is held and temporarily fixed.

  According to a tenth aspect of the present invention, in addition to the structure according to the ninth aspect, the strut portion of the fixing portion main body is formed in an L shape, and the strut portion or the connecting portion. The position of the connecting portion is adjusted and fixed in the long hole formed in either one of the flexible expansion joint according to the thickness of the flexible expansion joint.

  According to an eleventh aspect of the present invention, in addition to the configuration according to the ninth aspect, the flexible expansion joint is temporarily fixed in the elongated hole formed in one of the connecting portion and the pressing portion of the fixing portion main body. The position of the presser part is adjusted and fixed in accordance with the thickness of the flexible expansion joint.

According to a twelfth aspect of the present invention, there is provided a method for temporarily fixing a flexible expansion joint, wherein a clamp member is attached to both ends of a flexible expansion joint disposed across a joint between concrete structures. When temporarily fixing a flexible expansion joint that is pressed and attached with a fixing member fixed to an anchor bolt via
The fixing bolt body is fixed to the anchor bolt, and a presser arm is provided on a screw member provided on the fixing bolt main body so as to be rotatable about an axis parallel to the anchor bolt, and the presser arm is supported by a handle attached to the presser arm. And the flexible expansion joint is pressed at the tip thereof, and the pressing state by the pressing portion is held and temporarily fixed.

According to a thirteenth aspect of the present invention, there is provided a temporary fixing jig for a flexible expansion joint, wherein the fastening portions at both end edges of the flexible expansion joint disposed across the joint portion between the concrete structures, It is a jig for temporarily fixing a flexible expansion joint that is pressed and attached with a fixing member fixed to an anchor bolt via a holding member,
A fixing part main body fixed to the anchor bolt, a pressing arm part provided with a pressing part that presses the flexible expansion joint at a distal end part thereof, and a pressing arm part that has a base end part rotatably provided on the fixing part main body, and the pressing arm. It is characterized by comprising press holding and releasing means for holding and releasing the pressing state by the pressing part by rotating the part.

According to a fourteenth aspect of the present invention, the temporary fixing jig for the flexible expansion joint includes a flanged portion at both end edges of the flexible expansion joint disposed across the joint between the concrete structures. It is a jig for temporarily fixing a flexible expansion joint that is pressed and attached with a fixing member fixed to an anchor bolt via a holding member,
A fixing portion main body fixed to the anchor bolt, and a presser arm portion having a base end portion fixed to the fixing portion main body and a pressing portion pressing the flexible expansion joint at a distal end portion. To do.

  According to a fifteenth aspect of the present invention, in addition to the configuration of the thirteenth or fourteenth aspect, in addition to the configuration of the thirteenth or fourteenth aspect, the presser arm portion straddles the presser member that presses the attachment portion. The flexible expansion joint is formed in a substantially portal shape having a space for pressing.

  According to a sixteenth aspect of the present invention, in the flexible expansion joint temporary fixing jig, in addition to the structure of the first or third aspect, the pressing and holding means is constituted by a toggle link mechanism, and the operation lever is rotated. It is characterized in that the pressing state and the opening can be operated by operation.

  According to a seventeenth aspect of the present invention, in addition to the configuration of the first or third aspect, the temporary holding jig for the flexible expansion joint urges the presser holding release means in the pressing direction. The urging means is configured to hold the pressed state with the urging force and to be able to be opened against the urging force.

  According to an eighteenth aspect of the present invention, in the temporary fixing jig for a flexible expansion joint, in addition to the structure according to any one of the first to thirteenth to seventeenth aspects, the presser arm portion is composed of two arm members. In addition, each of the tip ends of the arm members protrudes inward or outward of the arms and is provided with the pressing portion.

  According to a nineteenth aspect of the present invention, there is provided a temporary fixing jig for a flexible expansion joint, in addition to the structure according to the fourteenth aspect, an anchor formed by forming the fixing portion main body into a U-shape with the anti-anchor bolt side opened. It is characterized in that it can be fixed to a bolt.

  According to a twentieth aspect of the present invention, in addition to the structure according to the nineteenth aspect, the flexible expansion joint temporary fixing jig is long on either the both sides of the opening of the fixing portion main body or the both sides of the presser arm. A hole or a plurality of holes are formed, and the position of the presser arm is configured to be adjustable according to the thickness of the flexible expansion joint in the long hole or the plurality of holes.

  According to a twenty-first aspect of the present invention, there is provided a temporary fixing jig for a flexible expansion joint, in addition to the structure according to the fourteenth aspect, the presser arm fixed to the fixing portion main body is connected to the flexible expansion joint side. It is characterized in that the end portion is pressed and can be temporarily fixed.

A temporary fixing jig for a flexible expansion joint according to claim 22 of the present invention is a jig for fixing both end edges of a flexible expansion joint disposed across a joint between concrete structures. It is a jig for temporarily fixing a flexible expansion joint that is pressed and attached with a fixing member fixed to an anchor bolt via a holding member,
The flexible expansion joint is provided with a fixed portion main body fixed to the anchor bolt, and a presser arm that is tilted and movable up and down by a spring to the fixed portion main body. And is temporarily fixed while holding the pressed state by the pressing portion.

According to a twenty-third aspect of the present invention, the temporary fixing jig for the flexible expansion joint is provided with a flanged portion at both end edges of the flexible expansion joint disposed across the joint between the concrete structures. It is a jig for temporarily fixing a flexible expansion joint that is pressed and attached with a fixing member fixed to an anchor bolt via a holding member,
From the connecting part of the gate-shaped fixing part main body provided with a column part fixed between the pair of anchor bolts straddling the flexible expansion joint and a connecting part connected to these column parts, And a pressing part that protrudes. The pressing part holds the flexible expansion joint, and the pressing state by the pressing part is held and temporarily fixed.

  According to a twenty-fourth aspect of the present invention, in the flexible expansion joint temporary fixing jig, in addition to the structure of the twenty-third aspect, the post portion of the fixing portion main body is formed in an L shape, A long hole is formed in any one of the connecting portions, and the position of the connecting portion is adjusted according to the thickness of the flexible expansion joint, and can be fixed.

  According to a 25th aspect of the present invention, in addition to the structure of the 23rd aspect, the flexible expansion joint temporary fixing jig according to the 25th aspect of the present invention has a length formed on one of the connecting portion and the holding portion of the fixing portion main body. It is characterized in that the position of the pressing portion can be adjusted and fixed to the hole according to the thickness of the flexible expansion joint.

According to a twenty-sixth aspect of the present invention, there is provided a flexible expansion joint temporarily fixing jig, wherein the adhesive portions at both end edges of the flexible expansion joint disposed across the joint portion between the concrete structures, It is a jig for temporarily fixing a flexible expansion joint that is pressed and attached with a fixing member fixed to an anchor bolt via a holding member,
A fixing portion main body fixed to the anchor bolt, a presser arm provided on a screw member provided on the fixing portion main body so as to be rotatable around an axis parallel to the anchor bolt, and a handle attached to the presser arm. The presser arm is rotated by this handle and the flexible expansion joint is pressed at the tip, and the pressing state by the presser is held and can be temporarily fixed. is there.

  According to the temporary fixing method of the flexible expansion joint according to the first aspect of the present invention, the clamped portions of the both ends of the flexible expansion joint disposed across the joint between the concrete structures are pressed. When temporarily fixing a flexible expansion joint that is pressed and fixed by a fixing member fixed to an anchor bolt via a member, the fixing portion main body is fixed to the anchor bolt, and the fixing portion main body is rotatably provided. Since the tip pressing part of the presser arm part is pressed against the flexible expansion joint, and the pressing state by the presser arm part is held and temporarily fixed, it is attached to the fixed main body part fixed to the anchor bolt. By rotating the presser arm part and applying the tip pressing part to hold the flexible expansion joint, and holding this state, it can be temporarily fixed, and the anchor bolt is attached to the ceiling part and the side part. Fixed directly with Even have flexible expansion joint, can be easily temporarily fixed, it is possible to work efficiently construction. In addition, the installation width of the expansion joint can be regulated and controlled by applying to the fixed main body or using the fixed position as a reference.

  According to the temporary fixing method of the flexible expansion joint according to claim 2 of the present invention, the adhesive portions of the both end edges of the flexible expansion joint disposed across the joint portion between the concrete structures, When temporarily fixing the flexible expansion joint that is pressed and attached by the fixing member fixed to the anchor bolt via the pressing member, the fixing portion main body is fixed to the anchor bolt, and the pressing arm portion provided on the fixing portion main body is fixed. Since the tip pressing part is pressed against the flexible expansion joint and held, and the pressing state by the pressing arm part is held and temporarily fixed, the pressing arm part attached to the fixing main body part fixed to the anchor bolt is used. By pressing the flexible expansion joint by applying the tip pressing part, it can be in a temporarily fixed state, even if it is a flexible expansion joint that is not directly fixed with an anchor bolt to the ceiling part or the side part, Easy provisional Can be constant, it is possible to work efficiently and construction. In addition, the installation width of the expansion joint can be regulated and controlled by applying to the fixed main body or using the fixed position as a reference.

  According to the temporary fixing method of the flexible expansion joint according to claim 3 of the present invention, the presser arm portion opens the space for installing the presser member, and the flexible expansion joint is connected at the tip pressing portion. Since the presser arm is shaped so that the installation space of the presser member that touches the attachment part is taken into account, the work is fixed so that it does not interfere with the work for the main fixing and can be fixed smoothly from the temporary fixing. Can be.

  According to the temporary fixing method of the flexible expansion joint according to claim 4 of the present invention, the pressing state is held by the pressing arm portion by the toggle link mechanism or the biasing means by the spring. The pressing state can be held by the urging force of the link mechanism or the spring, so that the temporary fixing can be easily performed and the opening after the installation can be easily performed.

  According to the temporary fixing method of the flexible expansion joint according to claim 5 of the present invention, the fixing portion main body is configured in a U shape with the anti-anchor bolt side opened, and is fixed to the anchor bolt. Compared to the case of using a string or the like, the flexible expansion joint can be temporarily fixed by being easily fixed to the anchor bolt, and the flexible expansion joint can be positioned by the fixing portion main body.

  According to the temporary fixing method of the flexible expansion joint according to claim 6 of the present invention, a long hole or a plurality of holes are formed in either one of the both sides of the opening of the fixing portion main body or the both sides of the presser arm. Since the position of the presser arm is adjusted and fixed according to the thickness of the flexible expansion joint, the position of the presser arm can be adjusted using a long hole or a plurality of holes. It is possible to flexibly cope with the thickness of the expansion joint.

  According to the temporary fixing method of the flexible expansion joint according to claim 7 of the present invention, the side end of the flexible expansion joint is pressed and temporarily fixed by the presser arm fixed to the fixing portion main body. Therefore, by temporarily fixing the side end portion such as the butt portion of the flexible expansion joint, a space for the original fixing operation of the flexible expansion joint can be secured.

  According to the temporary fixing method of the flexible expansion joint according to claim 8 of the present invention, the adhesive portions at both end edges of the flexible expansion joint disposed across the joint portion between the concrete structures, When temporarily fixing a flexible expansion joint that is pressed and fixed with a fixing member fixed to an anchor bolt via a pressing member, the fixing portion main body is fixed to the anchor bolt, and the fixing portion main body and the pressing arm are connected by a spring. Tilt and movably connected up and down, pressing the flexible expansion joint at the tip of the presser arm, and holding the pressing state by the presser part to temporarily fix it. Since these are connected by a spring, the flexible expansion joint can be temporarily fixed simply by fixing to the anchor bolt, and there is no need to adjust the thickness.

  According to the temporary fixing method of the flexible expansion joint according to claim 9 of the present invention, the adhesive portions at both end edges of the flexible expansion joint disposed across the joint portion between the concrete structures, When temporarily fixing a flexible expansion joint that is fixed by a fixing member that is fixed to an anchor bolt via a presser member, a strut portion and a connecting portion configured in a gate shape straddling the flexible expansion joint on the anchor bolt The both ends of the fixed portion main body with the fixed portion are fixed, and the flexible expansion joint is pressed by the press portion protruding from the connecting portion of the fixed portion main body, and the pressing state by the press portion is held and temporarily fixed. By attaching the gate-shaped fixing part body so as to straddle the flexible expansion joint and pressing it with the pressing part, it is possible to hold it more securely and temporarily fix it, and the mounting positions on both sides can be simplified. Can be positioned Kill.

  According to the temporary fixing method of the flexible expansion joint according to claim 10 of the present invention, the support portion of the fixing portion main body is formed in an L shape, and is formed on either the support portion or the connecting portion. Since the position of the connecting portion is adjusted and fixed to the elongated hole according to the thickness of the flexible expansion joint, the position of the connecting portion with respect to the support column can be adjusted. The thickness can be flexibly dealt with.

  According to the temporary fixing method of the flexible expansion joint according to the eleventh aspect of the present invention, the position of the presser portion is set in the long hole formed in one of the connecting portion and the presser portion of the fixing portion main body. Since the flexible expansion joint is adjusted and fixed in accordance with the thickness of the flexible expansion joint, the position of the pressing portion with respect to the connecting portion can be adjusted, and the thickness of the flexible expansion joint can be flexibly supported.

  According to the temporary fixing method of the flexible expansion joint according to claim 12 of the present invention, the adhesive portions at both end edges of the flexible expansion joint disposed across the joint portion between the concrete structures, When temporarily fixing the flexible expansion joint that is attached by pressing with a fixing member fixed to the anchor bolt via the pressing member, the fixing portion main body is fixed to the anchor bolt and the screw member provided on the fixing portion main body is pressed against the screw member. An arm is provided so as to be rotatable around an axis parallel to the anchor bolt, the presser arm is rotated by a handle attached to the presser arm, and the flexible expansion joint is pressed at a tip portion of the presser arm. Since it is temporarily fixed while holding the pressed state, it can be temporarily fixed by pressing the flexible expansion joint by rotating the handle after fixing the fixing body to the anchor bolt. It can be manipulated.

  According to the temporary fixing jig for a flexible expansion joint according to the thirteenth aspect of the present invention, the adhesive portions of the both ends of the flexible expansion joint disposed across the joint between the concrete structures. Is a temporary fixing jig for a flexible expansion joint that is attached by pressing with a fixing member fixed to an anchor bolt via a pressing member, and a fixing portion main body fixed to the anchor bolt, and the fixing portion main body The presser arm part is provided with a pressing part for pressing the flexible expansion joint at the tip part, and the pressing arm part is rotated to hold and release the pressing state by the pressing part. Press holding and releasing means, so that the temporary expansion jig is held by rotating the presser arm attached to the fixed main body fixed to the anchor bolt by the temporary fixing jig to press the flexible expansion joint. , Temporarily hold by holding this state Can be state, relative to the ceiling portion and side portions, be flexible expansion joint which is not directly fixed with anchor bolts, can be easily temporarily fixed, it is possible to work efficiently construction. In addition, the installation width of the expansion joint can be regulated and controlled by applying to the fixed main body or using the fixed position as a reference.

  According to the temporary fixing jig for a flexible expansion joint according to the fourteenth aspect of the present invention, the adhesive portions of the both ends of the flexible expansion joint disposed across the joint between the concrete structures. Is a temporary fixing jig for a flexible expansion joint that is attached by pressing with a fixing member fixed to an anchor bolt via a pressing member, and a fixing portion main body fixed to the anchor bolt, and the fixing portion main body And a presser arm portion having a pressing portion for pressing the flexible expansion joint at the distal end portion, and a presser foot attached to a fixed main body portion fixed to an anchor bolt by the temporary fixing jig. By holding the flexible expansion joint by pressing the tip pressing part of the arm part and holding this state, it can be temporarily fixed and can not be fixed directly to the ceiling part or side part with an anchor bolt. Even flexible expansion joints can be easily Temporarily fixing it can be, it can work efficiently construction on. In addition, the installation width of the expansion joint can be regulated and controlled by applying to the fixed main body or using the fixed position as a reference.

  According to the temporary fixing jig for a flexible expansion joint according to claim 15 of the present invention, the presser arm portion straddles the presser member that presses the attachment portion and presses the flexible expansion joint. The flexible expansion joint can be temporarily fixed across the presser member that presses the attachment part by forming the presser arm part into a substantially gate-type shape. By using this, the predetermined fixing state can be smoothly changed from the temporary fixing without interfering with the work for the main fixing.

  According to the temporary fixing jig of the flexible expansion joint according to claim 16 of the present invention, the pressing and holding means is constituted by a toggle link mechanism, and the pressing state and the opening are operated by rotating the operation lever. Since it was made possible, it can be held in a temporarily fixed state only by rotating the operation lever, or it can be opened and removed, so that the work can be performed efficiently.

  According to the temporary fixing jig for a flexible expansion joint according to claim 17 of the present invention, the pressing and holding means is constituted by a biasing means that biases the presser arm portion in the pressing direction, and a biasing force. Since the pressing state is held and the opening operation can be performed against the urging force, the means for pressing and holding the pressing arm portion is a urging means using a urging force such as a spring. It is not necessary and can be easily held in a temporarily fixed state, and can be easily opened by operating against a biasing force.

  According to the temporary fixing jig of the flexible expansion joint according to claim 18 of the present invention, the presser arm portion is constituted by two arm members, and the inner ends or the both ends are respectively provided at the ends of the arm members. Since the pressing portion is provided so as to protrude outward, the area of the temporary fixing portion can be increased by using the pressing arm portion as the pressing portion protruding from the two arm members and both sides thereof, and the temporary fixing can be performed more reliably. Can do.

  According to the temporary fixing jig for a flexible expansion joint according to claim 19 of the present invention, the fixing portion main body is formed in a U shape having an opening on the anti-anchor bolt side so as to be fixed to the anchor bolt. Therefore, the flexible expansion joint can be temporarily fixed by being easily fixed to the anchor bolt as compared with the case of using a string or the like, and the flexible expansion joint can be positioned by the fixing portion main body.

  According to the temporary fixing jig for a flexible expansion joint according to claim 20 of the present invention, a long hole or a plurality of holes are formed on either side of the opening of the fixing portion main body or on both sides of the presser arm. Since the position of the presser arm can be adjusted to the long hole or the plurality of holes according to the thickness of the flexible expansion joint, the position of the presser arm can be adjusted using the long hole or the plurality of holes. And can flexibly cope with the thickness of the flexible expansion joint.

  According to the temporary fixing jig of the flexible expansion joint according to claim 21 of the present invention, the presser arm fixed to the fixing portion main body is pressed against the side end portion of the flexible expansion joint temporarily. Since it was configured to be fixable, a space for the original fixing operation of the flexible expansion joint can be secured by temporarily fixing the side end portion such as the butt portion of the flexible expansion joint.

  According to the temporary fixing jig of the flexible expansion joint according to claim 22 of the present invention, the adhesive portions of the both ends of the flexible expansion joint arranged across the joint between the concrete structures. Is a temporary fixing jig for a flexible expansion joint that is attached by pressing with a fixing member fixed to an anchor bolt via a pressing member, and a fixing portion main body fixed to the anchor bolt, and the fixing portion main body And a presser arm that is tilted by a spring and movably connected to the top and bottom, and holds the flexible expansion joint at the tip of the presser arm, and holds the pressing state by the presser and temporarily fixes it. Therefore, since the fixing member and the presser arm are connected by a spring, the flexible expansion joint can be temporarily fixed simply by fixing to the anchor bolt, and there is no need to adjust the thickness.

  According to the temporary fixing jig for a flexible expansion joint according to claim 23 of the present invention, the adhesive portions of the edge portions of the flexible expansion joint arranged across the joint between the concrete structures. Is a temporary fixing jig for a flexible expansion joint that is attached by pressing with a fixing member that is fixed to an anchor bolt via a pressing member, and is fixed between the pair of anchor bolts straddling the flexible expansion joint. Comprising a gate-shaped fixing part main body provided with a supporting column part and a connecting part connected to these supporting column parts, and a pressing part protruding from the connecting part of the fixing part main body, While holding the flexible expansion joint and holding and temporarily fixing the pressing state by the pressing portion, it is possible to attach the gate-shaped fixing portion body so as to straddle the flexible expansion joint and press it with the pressing portion. That it can be securely pressed and temporarily fixed , It is possible to easily position the sides of the mounting position.

  According to the temporary fixing jig of the flexible expansion joint according to claim 24 of the present invention, the support portion of the fixing portion main body is formed in an L shape, and either the support portion or the connecting portion. Since the long hole is formed in the flexible expansion joint and the position of the connecting part is adjusted according to the thickness of the flexible expansion joint, the position of the connecting part with respect to the column part can be adjusted. The flexible expansion joint can be flexibly adapted to the thickness.

  According to the temporary fixing jig of the flexible expansion joint according to claim 25 of the present invention, the position of the presser portion in the long hole formed in one of the connecting portion of the fixed portion main body and the presser portion. Is adjusted according to the thickness of the flexible expansion joint so that it can be fixed. Therefore, the position of the presser portion relative to the connecting portion can be adjusted, and the thickness of the flexible expansion joint can be flexibly supported. it can.

  According to the temporary fixing jig for a flexible expansion joint according to claim 26 of the present invention, the adhesive portions of the edge portions of the flexible expansion joint disposed across the joint between the concrete structures. Is a temporary fixing jig for a flexible expansion joint that is attached by pressing with a fixing member fixed to an anchor bolt via a pressing member, and a fixing portion main body fixed to the anchor bolt, and the fixing portion main body A presser arm provided on the screw member provided to be rotatable about an axis parallel to the anchor bolt, and a handle attached to the presser arm. In addition to pressing the flexible expansion joint and holding the pressing state by the pressing portion, it can be temporarily fixed. Therefore, after fixing the fixing portion main body to the anchor bolt, the handle can be rotated to turn the flexible Expansion joints Presser can be temporarily fixed, can be manipulated more easily.

It is a schematic perspective view concerning one Embodiment of the temporary fixing jig of the flexible expansion joint of this invention. It is a description perspective view of the temporary fixing method concerning one Embodiment of the temporary fixing jig of the flexible expansion joint of this invention. It is a side view of the temporarily fixed state concerning one Embodiment of the temporary fixing jig of the flexible expansion joint of this invention. It is the schematic front view and schematic plan view concerning other embodiment of the temporary fixing jig of the flexible expansion joint of this invention. It is a schematic perspective view concerning another embodiment of the temporary fixing jig of the flexible expansion joint of this invention. It is a schematic perspective view concerning other embodiment of the temporary fixing jig of the flexible expansion joint of this invention. It is a schematic perspective view concerning one Embodiment of the temporary fixing jig of the flexible expansion joint of this invention. It is a schematic perspective view concerning other embodiment of the temporary fixing jig of the flexible expansion joint of this invention. It is a schematic perspective view concerning another embodiment of the temporary fixing jig of the flexible expansion joint of this invention. Each is an outline perspective view concerning one embodiment of a temporary fixing jig of a flexible expansion joint of this invention. It is a schematic perspective view concerning other embodiment of the temporary fixing jig of the flexible expansion joint of this invention. It is a schematic perspective view concerning another embodiment of the temporary fixing jig of the flexible expansion joint of this invention. It is a partial expansion perspective view concerning the fixation structure of the expansion joint for concrete structures to which the temporary fixing jig of the flexible expansion joint of this invention is applied. It is a side view concerning the fixation structure of the expansion joint for concrete structures to which the temporary fixing jig of the flexible expansion joint of this invention is applied. Each is concerning a fixing structure of the expansion joint for concrete structures to which the temporary fixing jig of the flexible expansion joint of this invention is applied. It is a cross-sectional view of the conventional water stop structure. It is a cross-sectional view of the conventional flexible water stop structure.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.
First, a method for temporarily fixing a flexible expansion joint according to the present invention and a structure for fixing a flexible expansion joint to be temporarily fixed by a temporary fixing jig used therefor will be described.
In the fixed structure 20 using a flexible expansion joint, the flexible expansion joint 23 is arrange | positioned so that the joint part 22 of the concrete structures 21 and 21 may be straddled.
In this flexible expansion joint 23, the expansion / contraction part 23b provided with the circular arc part 23a is arranged in the storage part 25 formed in the concrete structures 21 and 21, and the anchoring parts 23c at both ends are directly anchored by the anchor bolt 24. Instead of fixing, the pressing member 27 is applied to the attachment portion 23c, the fixing member 28 is tightened by the anchor bolt 24, and the tip pressing portion of the fixing member 28 is fixed to the pressing member 27 for fixing. Is. Therefore, a hole for the anchor bolt 24 is not formed in the attachment portion 23c of the flexible expansion joint 23.
By doing so, water is stopped by the flexible expansion joint 23, and the expansion and contraction of the wall portion caused by the unequal settlement of the concrete structures 21 and 21 on both sides of the joint portion 22, the displacement at the time of earthquake and the temperature change, etc. Allowing, even if the bolt pitch of the newly installed anchor bolt is misaligned to prevent interference with the reinforcing bar, it can be easily dealt with, and the fastening force can be dispersed and fixed uniformly.

  A flexible expansion joint 23 used in the fixing structure 20 includes an expansion / contraction part 23b meandering in a substantially W shape in which a cross-sectional shape is continuous with an arc part 23a at a middle part in the width direction of a long band, Flat plate-like attachment portions 23c are provided at both ends in the width direction, and are formed of a flexible elastic member such as rubber or synthetic resin. One or more reinforcing layers are embedded as required. When the expansion / contraction part 23b is extended by displacement or the like by using the expansion joint 23 which is continuous at the circular arc part 23a and the intermediate part meanders in the vertical direction as compared with the conventional expansion joint folded in the horizontal direction. Therefore, the expansion of the expansion joint 23 itself can be prevented. Further, by making the curvature of the arc portion 23a inside the expansion joint 23 as large as possible, damage during displacement can be reliably suppressed, and the bending strain when the arc portion expands during displacement does not exceed 100%. ing.

  In this fixed structure 20, the attachment portions 23 c and 23 c of the expansion joint 23 are arranged so as to straddle the joint portions 22 of the concrete structures 21 and 21, but the joint portions 22 of the concrete structures 21 and 21 have a step difference. The portions 21a and 21a are formed in a groove shape facing each other, and serve as a storage portion 25 for storing the expansion / contraction portion 23b of the expansion joint 23. The storage portion 25 can suppress the construction height of the expansion joint 23. Note that the width and depth of the storage portion 25 are determined by the size of the expansion / contraction portion 23 b necessary as the expansion joint 23. Depending on the expansion / contraction allowance of the expansion joint, the storage portion 25 formed in the concrete structures 21 and 21 can be omitted, and an expansion joint may be installed between the flat joint portions 22.

  The flexible expansion joint 23 has a reinforcement cloth such as polyester laid on the joints 22 of the concrete structures 21 and 21 as necessary, and further expands on the expansion joint 23 via a waterstop as necessary. Is installed, and a protective cover 26 is provided as necessary so as to cover the entire upper part of the expansion joint 23 up to the attachment parts 23c, 23c, and the protective cover 26 also has a folding part 26a that can be expanded and contracted. It is provided.

  In this fixing structure 20, a pressing member 27 applied to the butt portion 23c of the flexible expansion joint 23 is used, and is formed of a substantially U-shaped, lip groove-shaped cross-sectional shape with an upper opening. For example, the width is 50 mm, the height is 25 mm, the thickness is 2 mm, and the lip width is 10 mm. The cross-sectional shape of the lip groove shape allows the weight to be reduced to 1 / 3.73 while ensuring the same rigidity as compared with a flat plate shape having a width of 50 mm and a thickness of 16.7 mm. .

  If it is necessary to further increase the rigidity, a bolt nut at a position where it does not interfere with the anchor bolt by interposing a rectangular parallelepiped reinforcing member or a U-shaped C-shaped steel reinforcing member in the groove of the holding member 27. By fixing with or by welding or the like, it is possible to reinforce stably without shifting even when the pressing member 27 is disposed on the vertical wall surface or the ceiling wall surface.

  In the fixing structure 20 using such a pressing member 27, the pressing member 27 is not fixed directly to the concrete structures 21 and 21 with the anchor bolt 24, but is fixed via the anchor bolt 24 that is planted outside the expansion joint 23. The member 28 is tightened, and the pressing member 27 is fixed through the fixing member 28.

  The fixing member 28 is provided with an intermediate plate-like portion 28a inserted and fixed by an anchor bolt, and an attachment hole 28b for the anchor bolt 24 is formed, and bent so that both sides of the intermediate plate-like portion 28a are bent inward. Both side plate portions 28c and 28c are formed by processing. A presser arm portion 28d for pressing the presser member 27 is formed at the leading end of each of the side plate portions 28c so as to protrude, and the base plate portion of each side plate portion 28c is spaced from the intermediate plate-like portion 28a. An elastic contact portion 28f that protrudes inward so as to form the same surface and contact the concrete structure 21 is integrally formed. In this fixing member 28, the protruding length of the presser arm portion 28 d is substantially the same as the groove width of the presser member 27, and the tip end portion of the presser arm portion 28 d is slightly the same as or inside the outer side of the presser member 27. It is in a state of retreating. Thereby, even if the expansion joint 23 is largely displaced, it is possible to prevent interference and damage with the distal end portion of the fixing member 28.

  It should be noted that the tip end portion of the presser arm portion 28d of the fixing member 28 is largely retracted to the inside of the presser member 27 as shown in FIG. 15A, or the top surface portion as shown in FIG. May be cut out in an arc shape with a large curvature so that even if the expansion joint 23 is greatly displaced, interference and damage to the tip of the fixing member 28 can be prevented more reliably.

  The fixing member 28 is formed with a locking projection 28e that protrudes into the groove of the pressing member 27 and is locked on the lower surface of the pressing arm portion 28d, and the locking protruding portion 28e has a groove width of the pressing member 27. The size is substantially the same as that of the locking projection 28e.

  Further, in the fixing member 28, when the distance from the lower surface of the intermediate plate portion 28a to the lower surface of the presser arm portion 28d of the both side plate portions 28c (corresponding to the height of the side plate portion) is fastened to the anchor bolt 24, the presser It is set so that the contact pressure required for crimping the attached portion 23c of the expansion joint 23 to the concrete structure 21 via the member 27 can be generated.

Furthermore, in this fixing structure 20, in order to prevent a displacement when the holding member 27 is placed on the fixing portions 23c on both ends of the flexible expansion joint 23 and tightened with the fixing members 28, the fixing portions 23c are prevented. A pair of projecting edge portions 23d and 23d are formed on the base plate, and the distance between the pair of projecting edge portions 23d and 23d is substantially the same as or narrower than the width of the presser member 27. It can be clamped. In this fixing structure 20, one of the pair of projecting edge portions 23d, 23d is formed on the outer side of the attachment portion 23c and protrudes upward, and the other is also used as the outer surface of the stretchable portion 23b. .
Thereby, the stability against the force and displacement applied to the expansion joint 23 can be improved by sandwiching the pressing member 27 between the pair of projecting edge portions 23d and 23d, or by sandwiching with the elastic force. A structure that is more resistant to water pressure and the like can be obtained.

  The temporary fixing jig 30 in the case where such a flexible expansion joint 23 is attached to the top surface portion or the side surface portion of the concrete structure 21 includes a fixing portion main body 31 fixed to the anchor bolt 24 and the fixing portion main body 31. A pressing arm portion 33 provided with a pressing portion 32 having a proximal end portion rotatably provided and pressing the flexible expansion joint 23 at the distal end portion, and a pressing state by the pressing portion 32 by rotating the pressing arm portion 33. A press holding / releasing means 34 for holding / releasing is provided.

  The fixing portion main body 31 of the temporary fixing jig 30 is arranged so that the intermediate plate portion 31b is partitioned between the two side plate portions 31a and 31a and is attached by welding or the like, and is attached to the intermediate plate portion 31b. An insertion groove 31c having an opening on the tip side which is a fixed portion to the anchor bolt 24 is formed so that the anchor bolt 24 can be inserted without removing the nut. The distal end surfaces of the side plate portions 31a and 31a of the fixed portion main body 31 are used to regulate and control the installation width of the flexible expansion joint 23, and by applying the attachment portion 23c, flexibility is possible. The flexible expansion joint 23 can be installed in a predetermined width.

On the outside of the fixed main body 31, a presser arm portion 33 is composed of two substantially gate-shaped arm members 33 a and 33 a, and the base end portion of each arm member 33 a can be rotated by a pin 33 b or the like. At the tip end portions of the two arm members 33a and 33a of the presser arm portion 33, a pressing portion 32 is formed in a columnar shape so as to connect the arm members 33a and 33a on both sides. Such a substantially gate-shaped arm member 33a, 33a can secure a space for arranging a presser member 27 for fixing the flexible expansion joint 23 to the intermediate portion.
Then, the pressing arm 32 is rotated from the state where the pressing arm portion 33 is rotated and retracted upward, and is then moved downward to press the pressing portion 32 against the expansion / contraction portion 23b of the flexible expansion joint 23. By doing so, it is temporarily fixed.

  In order to hold this temporarily fixed state, a toggle link mechanism 35 is used as the press holding release means 34, and one end portion of the first link 35a is located above the pin 33b serving as the rotation center of the arm member 33a of the presser arm portion 33. The pin 35b is pivotally attached, and the one end of the second link 35c is pivotable by the pin 35d from the pin 33b, which is the pivot center of the arm member 33a, in the lateral direction of the side plate 31a of the fixed main body 31. The three pins 33b, 35b, and 35d are attached and arranged so as to form a right triangle. The other end of the first link 35a and the other end of the second link 35c are connected by a pin 35e, and the hypotenuse of a right triangle when the first link 35a and the second link 35c are linear. An integrated operation lever 35f is connected to the first link 35a via the pin 35e so as to project obliquely from the oblique side of the right triangle.

  Therefore, by depressing the operation lever 35f, the arm members 33a, 33a constituting the presser arm portion 33 can be rotated upward with a small force, while the operation lever 35f is depressed by depressing the operation lever 35f. By positioning the pin 35e of the first link 35a and the second link 35c at the dead center where the first link 35a and the second link 35c are in a straight line, the temporarily fixed state in which the flexible expansion joint 23 is pressed by the pressing portion 32 at the distal end of the presser arm 33 is It is possible to hold without applying force.

Next, a temporary fixing method and fixing installation of the flexible advance joint 23 using such a temporary fixing jig 30 will be described with reference to FIGS. The upper and lower sides of the temporary fixing jig in FIG. 1 are inverted, and the description will be made based on the inverted state.
Anchor bolts 24 are planted at predetermined pitches on both sides of the joint portion 22 of the top surface portion of the concrete structure 21.
Then, nuts 24a are screwed in at predetermined intervals of the anchor bolts 24, for example, every other one to fix the temporary fixing jig 30, and the intermediate plate-like portion 31b is inserted into the upper side of the nut 24a using the insertion grooves 31c. After the plate-like portion 31b is positioned, the side plate portions 31a and 31a of the fixing portion main body 31 are positioned so that the distal end surfaces of the fixing portion main body 31 have the installation width of the flexible expansion joint 23 and fixed by tightening with the nut 24a. Then, the presser arm portion 33 is rotated to operate the operation lever 35f so that the pressing portion 32 is in an open state separated from the surface of the concrete structure 21.
Such temporary fixing jigs 30 are installed on each of, for example, every other anchor bolt 24 on both sides of the top surface portion sandwiching the joint portion 22.

  On the other hand, it is possible to fix the main fixing member 28 to the anchor bolts 24 between the temporary fixing jigs 30 by loosely attaching them with the nuts 24a through the attachment holes 28b of the intermediate plate portion 28a and rotating them. The flexible expansion joint 23 is retracted from the installation surface.

  After preparing the flexible expansion joint on the top surface in this way, the flexible expansion joint 23 is applied to the top surface, and the outer surface of the attachment portion 23c is fixed to the fixing main body 31 of the temporary fixing jig 30. In the state where the two side plate portions 31a and 31a are in contact with the front end surfaces, the operating lever 35f is operated to press the pressing portion 32 against the expansion / contraction portion 23b to be in the pressing state, and temporarily fixed by the temporary fixing jigs 30 and 30 on both sides. Repeat holding.

As a result, the flexible expansion joint 23 is temporarily fixed with the expansion / contraction part 23b being pressed, and the shape of the attachment part 23c is also maintained by the internal reinforcing layer or the like, and applied along the top surface part of the concrete structure 21. Is held in a state where
In this way, the temporary fixing jigs 30, 30,... Are temporarily fixed, and the flexible expansion joint 23 is attached using the substantially portal-shaped space of the presser arm portion 33 of the temporary fixing jig 30. The presser member 27 is applied to the portion 23c, the main fixing fixing member 28 is rotated to apply the presser arm portion 28d, and then the nut 24a is tightened to be in the final fixed state.

  After the main fixing by the fixing member 28 for the main fixing is repeated, the anchor bolt 24 is released by the operation lever 35f of the temporary fixing jig 30 and removed from the anchor bolt 24, and the temporary fixing jig 30 is removed. The fixing member 28 for main fixing is attached to the main fixing state repeatedly to complete the mounting of the flexible expansion joint 23.

  According to such a temporary fixing method of the flexible expansion joint and the temporary fixing jig 30, the presser arm portion 33 attached to the fixed main body portion 31 fixed to the anchor bolt 24 is rotated and the tip pressing portion 32 is applied. By holding the flexible expansion joint 23 and holding this state, it can be temporarily fixed, and the flexible expansion joint 23 that is not directly fixed to the ceiling part or the side part by the anchor bolt 24 is used. Even if it exists, it can be temporarily fixed easily and can be constructed with good work efficiency. Moreover, the installation width | variety of the expansion joint 23 can be controlled by making it apply to the fixed main-body part 31 or setting a fixed position as a standard.

  In addition, by making the presser arm portion 33 into a shape that takes into account the installation space of the presser member 27 that contacts the attachment portion 23c, the predetermined fixed state can be made smoothly from the temporary fixing without interfering with the work for the main fixing. Can be.

  Furthermore, the pressing state by the presser arm portion 33 can be held by the toggle link mechanism 35, the temporary fixing can be easily performed, and the opening after the installation can be easily performed by operating the operation lever 35f.

  In addition, according to the temporary fixing jig 30 of this flexible expansion joint, the presser arm portion 33 is constituted by two arm members 33a and 33a, and both end portions of the arm members 33a and 33a are provided on both inner sides. Since the pressing portion 32 protruding and connected is provided, the area of the pressing portion 32 to be temporarily fixed can be increased, and the temporary fixing can be performed more reliably.

Next, another embodiment of the temporary fixing jig will be described with reference to FIG.
This temporary fixing jig 40 is intended to reduce the weight and simplify the structure. The fixing portion main body 41 is formed by bending a metal plate into a substantially U-shape, and includes an upper plate portion 41a and a bottom plate portion. 41b is connected by a connecting plate 41c, and an insertion groove 41d to the anchor bolt 24 is formed in the upper plate portion 41a and the bottom plate portion 41b, and is inserted so as to be inserted between the anchor bolt 24 and the nut 24a. It can be fixed.

  A width restricting portion 41e that is bent upward is formed at the distal end portion (opening side of the insertion groove 41d) of the bottom plate portion 41b of the fixed portion main body 41, and the bracing portion 23c of the flexible expansion joint 23 is formed. By applying, the installation width can be regulated and controlled.

  In the temporary fixing jig 40, a presser arm portion 43 having a pressing portion 42 at a tip end portion is integrally formed with a spring body 45 a of a spring mechanism 45 constituting a press holding and releasing means 44, and a bottom plate portion of the fixing portion main body 41. A spring main body 45a of a coiled spring is attached to the extension 41f of 41b by welding or the like, and spring members 45b on both sides of the spring main body 45a are formed in a substantially gate shape to form a presser arm portion 43, and a distal end portion of the spring member 45b Is bent outward to form the pressing portion 42.

The pressing portion 42 at the tip of the presser arm portion 43 is positioned below the horizontal plane in the natural state by the urging force of the spring body 45a of the string spring, and the flexible expansion joint 23 is positioned in the horizontal plane. An urging force that can be temporarily fixed can be applied.
As a result, the presser arm portion 43 constituting member and the spring mechanism 45 of the press-holding / releasing means 44 are combined to achieve simplification and weight reduction of the structure.

  In addition, a substantially rectangular handle 46 is attached to the temporary fixing jig 40 from both ends of the bottom plate portion 41 b of the fixing portion main body 41 so as to surround the presser arm portion 43.

In the temporary fixing jig 40 configured as described above, the insertion groove 41d of the fixing portion main body 41 is attached by being inserted between the nut 24a of the anchor bolt 24 and the concrete structure 21, and the extension portion of the flexible expansion joint 23 is attached. After the pressing arm portion 43 is rotated against the spring mechanism 45 so as to press the end portion of 23b, it is released so that the spring force acts, and the extension portion 23b is pressed by the pressing portion 42 at the tip. It is possible to hold the temporarily fixed state.
The flexible expansion joint 23 can be easily temporarily attached to the top surface portion or the side surface portion using the same as the temporary fixing jig 30 described above except that the presser arm portion 43 is set against the spring and opened. It can be fixed and can be opened and removed.

According to the temporary fixing jig 40 of the flexible expansion joint, the means 44 for pressing and holding the presser arm portion 43 is the urging means 45 using an urging force such as a spring, so that a tightening force or the like is required. In addition, the temporarily fixed state can be easily maintained, and the temporary fixation and release can be easily performed by operating against the urging force.
Other actions and effects are the same as those of the temporary fixing jig 30 already described.

Next, still another embodiment of the temporary fixing jig will be described with reference to FIG.
This temporary fixing jig 50 is intended to further simplify the structure, omits the press holding release means, and holds the pressing state by attaching to the anchor bolt 24 to temporarily fix it.
The temporary fixing jig 50 includes a fixing portion main body 51 that is fixed to the anchor bolt 24. The fixing portion main body 51 is formed in a substantially U-shape that is open on the opposite side to the anchor bolt 24 side. The plate parts 51a and 51a are connected by the connecting plate part 51b, and the connecting plate part 51b is formed with an insertion hole for the anchor bolt 24. The nut 24a is removed from the anchor bolt 24, and the plate 24a is reattached by the nut 24a. It can be attached by fixing.
The installation width of the flexible expansion joint 23 can be regulated and controlled by applying the butt portion 23c of the flexible expansion joint 23 to the front edge portion of the fixed body 51.

  In addition, it can be inserted between the anchor bolt 24 and the nut 24a as an insertion groove having an opening instead of the insertion hole of the connecting plate portion 51b of the fixing portion main body 51, and is inserted and fixed. Further, it may be possible to eliminate the necessity of attaching and detaching the nut.

  Both side plate portions 51 a. 51a has a pressing arm portion 53 that protrudes forward and includes a pressing portion 52 at a tip portion, and two arm plates 53a and 53a are integrally attached by welding or the like, and the two arm plates 53a and 53a are connected. The pressing portion 52 to be applied is brought into contact with the expansion / contraction portion 23b of the flexible expansion / contraction joint 23 so that it can be temporarily fixed.

In the temporary fixing jig 50 configured as described above, the insertion hole of the fixing portion main body 51 is attached to the anchor bolt 24 from which the nut 24a is removed, and the pressing arm portion 53 is pressed so as to press the expansion / contraction portion 23b of the flexible expansion joint 23. The fixing portion main body 51 is fastened to the anchor bolt 24 with the nut 24a by applying the pressing portion 52, and the temporarily fixing state can be maintained. By removing the temporary fixing jig 50 from the anchor bolt 24, the temporary fixing is released. can do.
As a result, it is possible to simplify the structure without the need for pressing and holding release means, and it is possible to work more efficiently than when temporarily fixing using a conventional string or the like. The positioning can be performed by applying.

Next, another embodiment of the temporary fixing jig will be described with reference to FIG.
The temporary fixing jig 50A is adapted to flexibly cope with the change in the thickness of the flexible expansion joint in the temporary fixing jig 50, and includes both side plate portions 51a and 51a of the fixing portion main body 51; A long hole 54 is formed in one of the two arm plates 53a, 53a of the presser arm 53, and a bolt hole 55 is formed in the other so that the fixing position can be adjusted and attached. .
In the temporary fixing jig 50 </ b> A, long holes 54 are formed in both side plate portions 53 a and 53 a of the fixing portion main body 51, and bolt holes 55 are formed in the arm plates 53 a and 53 a of the presser arm portion 53.
In addition, since the other structure is the same as the temporary fixing jig 50 already demonstrated, the same code | symbol is described to the same part and the description is abbreviate | omitted.

In the temporary fixing jig 50A configured as described above, the position of the pressing portion 52 at the distal end portion of the pressing arm portion 53 with respect to the fixing portion main body 51 is adjusted in advance according to the thickness of the expansion / contraction portion 23b of the flexible expansion joint 23. The long holes 54 and the bolt holes 55 are fixed with bolt nuts 56. Thereafter, the insertion hole of the fixing portion main body 51 is attached to the anchor bolt 24 from which the nut 24a has been removed, and the pressing portion 52 of the holding arm portion 53 is applied so as to press the expansion / contraction portion 23b of the flexible expansion joint 23. The main body 51 is fastened to the anchor bolt 24 with the nut 24 a to maintain the temporarily fixed state, and the temporary fixing jig 50 is removed from the anchor bolt 24 to release the temporary fixing.
Thereby, while being able to respond flexibly to a change in the thickness of the flexible expansion joint 23, as with the temporary fixing jig 50 already described, no pressing and holding means is required, and the structure can be simplified. As compared with the case of temporarily fixing using a conventional string or the like, the work can be performed efficiently and the flexible expansion joint can be positioned.

Next, still another embodiment of the temporary fixing jig will be described with reference to FIG.
The temporary fixing jig 50B is adapted to flexibly cope with a change in the thickness of the flexible expansion joint in the temporary fixing jig 50, and position adjustment by a bolt and nut in the temporary fixing jig 50A is performed. It is a simplification.
In this temporary fixing jig 50B, square holes 57 are formed as a plurality of holes in either one of the two side plates 51a, 51a of the fixed portion main body 51 and the two arm plates 53a, 53a of the presser arm portion 53. By forming a rectangular projection 58 that can be fitted into one of these square holes 57 on the other side and fitting each other, the fixing position can be adjusted and attached.
In this temporary fixing jig 50B, square holes 57 are formed in both side plate portions 53a and 53a of the fixing portion main body 51, and square protrusions 58 are formed in the arm plates 53a and 53a of the presser arm portion 53. .
In addition, since the other structure is the same as the temporary fixing jigs 50 and 50A already described, the same portions are denoted by the same symbols, and the description thereof is omitted.

In the temporary fixing jig 50B configured as described above, the position of the pressing portion 52 at the distal end portion of the pressing arm portion 53 with respect to the fixing portion main body 51 is adjusted in advance according to the thickness of the expansion / contraction portion 23b of the flexible expansion joint 23. It is fixed by a square hole 57 and a square projection 58.
Thereafter, the insertion hole of the fixing portion main body 51 is attached to the anchor bolt 24 from which the nut 24a has been removed, and the pressing portion 52 of the holding arm portion 53 is applied so as to press the expansion / contraction portion 23b of the flexible expansion joint 23. The main body 51 is fastened to the anchor bolt 24 with the nut 24 a to maintain the temporary fixing state, and the temporary fixing jig 50 </ b> B is removed from the anchor bolt 24 to release the temporary fixing.
Thereby, while being able to respond flexibly to the change in the thickness of the flexible expansion joint 23, the fixing position can be adjusted simply by fitting the square hole 57 and the square projection 58, and the position can be further simplified. Can be adjusted. Further, like the temporary fixing jig 50 described above, the pressing and releasing means is not required, the structure can be simplified, and the work can be performed more efficiently than when temporarily fixing using a conventional string or the like. In addition, the flexible expansion joint can be positioned.

  It should be noted that the present invention is not limited to the case where one square protrusion 58 is formed and fitted into one square hole 57, but a plurality of square protrusions 58 are formed and simultaneously fitted into a plurality of square holes 57. It may be possible to fix with, or more firmly.

Next, another embodiment of the temporary fixing jig will be described with reference to FIG.
The temporary fixing jig 50C is adapted to flexibly cope with the change in the thickness of the flexible expansion joint in the temporary fixing jig 50, and the bolt nuts and corners in the temporary fixing jigs 50A and 50B. Compared with the position adjustment by fitting the hole and the projection, it can be handled without any operation.
In the temporary fixing jig 50C, the fixing portion main body 51 is formed in a flat plate shape, an insertion hole (or insertion groove) for the anchor bolt 24 is provided, and a presser arm portion 53 having a pressing portion 52 at the distal end portion is L. It is formed in a letter shape and protrudes to the pressing portion 52. A compression coil spring is disposed as a spring 59 between the fixed portion main body 51 and the presser arm portion 53, and the fixed portion main body 51 and one end of the spring 59 are fixed by welding or the like. The other end portion of the spring 59 is fixed by welding or the like, and the fixing portion main body 51 and the presser arm portion 53 are connected via the spring 59.
In the temporary fixing jig 50C, in order to restrict the movement of the presser arm 53 connected by the spring 59 in a direction other than the spring expansion / contraction direction, a guide rod 59a is fixed to the fixing portion main body 51 by welding or the like. By forming the guide hole 59b through which the 59a is inserted in the presser arm portion 53, the inclination of the presser arm portion 53 can be regulated. In place of the guide hole, a guide tube may be attached to the presser arm portion 53 by welding or the like, and may be guided by sliding along the guide rod 59a, and the tilt or the like can be more reliably regulated.

In the temporary fixing jig 50C configured as described above, the insertion hole of the fixing portion main body 51 is attached to the anchor bolt 24 from which the nut 24a is removed, and the pressing portion of the presser arm portion 53 is attached to the expansion / contraction portion 23b of the flexible expansion joint 23. 52 is arranged so that it hits, and the fixing portion main body 51 is fastened to the anchor bolt 24 with the nut 24a, so that the temporarily fixed state of the flexible expansion joint 23 is maintained, and the temporary fixing jig 50C is removed from the anchor bolt 24. To release the temporary fixing.
Thus, the flexible expansion joint without adjusting the position of the pressing portion 52 at the distal end portion of the presser arm portion 53 with respect to the fixed portion main body 51 according to the thickness of the expansion / contraction portion 23b of the flexible expansion joint 23 by the spring 59 in advance. It is possible to respond flexibly to changes in the thickness of 23.
Further, like the already-described temporary fixing jig 50 and the like, no pressing and holding means is required, the structure can be simplified, and it is more efficient than when temporarily fixing using a conventional string or the like. While being able to work, the flexible expansion joint can be positioned at the front edge portion of the fixed portion main body 51.

  In the illustrated example, the spring 59 is arranged in front of the insertion hole of the anchor bolt 24, but a spring may be arranged behind the insertion hole. What is necessary is just to determine suitably according to the space | interval with the attachment part of an expansion joint, etc.

Next, still another embodiment of the temporary fixing jig will be described with reference to FIG.
In the temporary fixing jig 60 described above, the flexible expansion joint is temporarily fixed in a cantilever state using an anchor bolt on one side of the flexible expansion joint. In order to simplify the structure, the pressure holding and releasing means is omitted, and only the attachment to the anchor bolt 24 is used. And temporarily fixed.
The temporary fixing jig 60 includes a fixing portion main body 61 fixed to the anchor bolt 24. The fixing portion main body 61 has a gate shape straddling the flexible expansion joint 23. 61a and a connecting portion 61b that connects them are integrated. These support portions 61a and 61a are formed in an L shape to form insertion holes (or insertion grooves) to the anchor bolts 24 so that the anchor bolts 24 can be inserted and fixed. Further, a pressing portion 62 is integrally provided at the center portion of the connecting portion 61b so as to protrude toward the flexible expansion joint 23 side, and the column portions 61a and 61a of the fixing portion main body 61 are fixed to the anchor bolt 24. Therefore, the amount of protrusion can be temporarily fixed by pressing the expansion / contraction part 23b of the flexible expansion joint 23 with the pressing part 62.

In the temporary fixing jig 60 configured as described above, the insertion holes of both the column portions 61a and 61a of the fixing portion main body 61 are respectively attached to the anchor bolts 24 from which the nuts 24a are removed, and the expansion and contraction portions 23b of the flexible expansion joint 23 are attached. The flexible expansion joint 23 can be maintained in a temporarily fixed state by applying the central pressing portion 62 of the connecting portion 61b to the anchor bolt 24 and tightening the anchor bolt 24 with the nut 24a. The temporary fixing of the flexible expansion joint 23 can be released by removing the temporary fixing jig 60.
Thereby, the flexible expansion joint 23 can be securely held in the temporarily fixed state by the gate-shaped fixing portion main body 61, and the structure can be simplified without the need for pressing and holding release means. Compared with the case where it temporarily fixes using etc., it can work efficiently, and by applying the attachment parts 23c and 23c of the flexible expansion joint 23 to the front edge part of the fixing | fixed part main body 61, the Positioning can be performed.

Next, another embodiment of the temporary fixing jig will be described with reference to FIGS.
The temporary fixing jigs 60A and 60B are configured to flexibly cope with the change in the thickness of the flexible expansion joint in the temporary fixing jig 60 described above. In (b), a long hole 64 is formed in either one of the support portions 61a, 61a and the connecting portion 61b, or between the connecting portion 61b and the pressing portion 62, and the bolt hole 65 is provided in the other. , And the fixing position of the pressing portion 62 is adjusted so that it can be fixed by the bolt and nut 66.
In the temporary fixing jig 60A, the long holes 64 are formed in both the column portions 61a and 61a of the fixing portion main body 61, and the bolt holes 65 are formed in the connecting portion 61b.
In addition, since the other structure is the same as the temporary fixing jig 60 already demonstrated, the same code | symbol is described to the same part and the description is abbreviate | omitted.
In the temporary fixing jig 60 </ b> B, a long hole 64 is formed in the connecting portion 61 b of the fixing portion main body 61, and a bolt hole 65 is formed in the pressing portion 62.
In addition, since the other structure is the same as the temporary fixing jig 60 already demonstrated, the same code | symbol is described to the same part and the description is abbreviate | omitted.

In the temporary fixing jigs 60 </ b> A and 60 </ b> B configured as described above, in a state where the column portions 61 a and 61 a of the fixing portion main body 61 are fixed to the anchor bolt 24 according to the thickness of the expansion and contraction portion 23 b of the flexible expansion joint 23 in advance. Then, the long hole 64 and the bolt nut 66 of the bolt hole 65 are fixed so that the pressing part 62 comes into contact with the expansion / contraction part 23b of the flexible expansion joint 23 and has a protruding amount that can be temporarily fixed. Thereafter, the insertion holes of both support columns 61a, 61a of the fixed portion main body 61 are respectively attached to the anchor bolts 24 from which the nuts 24a have been removed, and the central position of the connecting portion 61b is connected to the expansion / contraction portion 23b of the flexible expansion joint 23. By applying the adjusted pressing portion 62 and fastening the fixing portion main body 61 to the anchor bolt 24 with the nut 24a, the flexible expansion joint 23 is held in a temporarily fixed state, while the anchor bolt 24 temporarily fixes jigs 60A and 60B. The temporary fixation of the flexible expansion joint 23 can be released by removing.
Thus, the flexible expansion joint 23 can be flexibly adapted to changes in the thickness of the flexible expansion joint 23, and the flexible expansion joint 23 can be securely attached to the temporary fixing joint body 61 with the portal fixing portion main body 61 in the same manner as the temporary fixing jig 60 described above. It can be held in a fixed state, does not require a press-holding release means, can simplify the structure, and can work efficiently compared with the case where it is temporarily fixed using a conventional string or the like. By applying the attachment portions 23c and 23c of the flexible expansion joint 23 to the front edge portion of the main body 61, the positioning can be performed simultaneously on both sides.

Next, still another embodiment of the temporary fixing jig will be described with reference to FIG.
This temporary fixing jig 70 can be fixed to the anchor bolt and temporary fixing of the flexible expansion joint in separate steps. After the temporary fixing jig is installed in advance, The flexible expansion joint can be temporarily fixed by pressing it around the axis parallel to the anchor bolt.
In this temporary fixing jig 70, the fixing portion main body 71 is formed in a flat plate shape, an insertion hole (or an insertion groove) for the anchor bolt 24 is provided, and a presser arm portion 73 having a pressing portion 72 at the tip portion is L. It is formed in a letter shape so that the pressing portion 72 protrudes.
A screw shaft 74 is attached as a screw member parallel to the anchor bolt 24 behind the insertion hole of the anchor bolt of the fixed portion main body 71 so as to protrude from the fixed portion main body 71 by welding or the like, and is screwed into the screw shaft 74. A presser arm 73 is mounted between the two upper and lower nuts 75 and is rotatably attached. Of the two upper and lower nuts attached to the screw shaft 74, instead of moving the inner (fixed part main body side) nut corresponding to the thickness of the flexible expansion joint, the nut is fixed by welding or the like. It is good as a stand.
Further, in this temporary fixing jig 70, a handle portion 76 for rotating operation is extended by welding or the like at the base end portion of the presser arm portion 73 that can be rotated, and an operation portion 77 is provided at the end portion. is there. The presser arm portion 73 and the handle portion 76 may be attached as separate members by welding, or may be integrated with one member.

In the temporary fixing jig 70 configured as described above, the insertion hole of the fixing portion main body 71 is attached to the anchor bolt 24 from which the nut 24a is removed, and is fixed by tightening again with the nut 24a. In this state, the presser arm portion is fixed. The pressing portion 72 of 73 is rotated around the screw shaft 74 so as to be retracted from the expansion portion 23b of the flexible expansion joint 23.
Thereafter, when the flexible expansion joint 23 is disposed at the joint, the operation portion 77 of the handle portion 76 is rotated so that the pressing portion 72 of the presser arm portion 73 comes into contact with the expansion / contraction portion 23b. The joint 23 is pressed to hold the temporarily fixed state. On the other hand, the temporary fixing is released by rotating the anchor arm 73 of the temporary fixing jig 70 so as to retract from the anchor bolt 24 to release the temporary fixing. The removal of the tool 70 ends.
As a result, the flexible expansion joint 23 can be temporarily fixed and released simply by a turning operation by the handle portion 76 and the operation portion 77, and a mechanism for holding the temporarily fixed state can also be constituted by the screw shaft 74 and the nut 75. It does not require a complicated mechanism for holding and releasing the pressure, can simplify the structure, and can work efficiently compared to the case of temporarily fixing using a conventional string, etc. The flexible expansion joint can be positioned at the front edge portion of 71.

  In the illustrated example, the screw shaft 74 is arranged behind the insertion hole of the anchor bolt 24. However, the screw shaft may be arranged in front of the insertion hole. What is necessary is just to determine suitably according to the space | interval with the adhesive part of a flexible expansion joint, etc.

Next, another embodiment of the temporary fixing jig will be described with reference to FIG.
In the temporary fixing jig 80, the temporary fixing jig 80 can be used instead of pressing the expansion / contraction portion 23b of the flexible expansion joint 23 to temporarily fix the holding portion 23c. This is a temporary fixing state, further reducing weight and simplification, omitting the press holding release means, and holding the pressing state by attachment to the anchor bolt 24 to temporarily fix it.
The temporary fixing jig 80 includes a fixing portion main body 81 that is fixed to the anchor bolt 24. The fixing portion main body 81 is formed in a substantially U-shape that is open on the side opposite to the anchor bolt 24 side. The plate portions 81a and 81a are connected by the connecting plate portion 81b, and the connecting plate portion 81b has an insertion hole for the anchor bolt 24. The nut 24a is removed from the anchor bolt 24, and the plate 24a is reattached by the nut 24a. It can be attached by fixing.
The installation width of the flexible expansion joint 23 can be regulated and managed by applying the attachment portion 23c of the flexible expansion joint 23 to the front edge of the fixed portion main body 81.

  In addition, it can be inserted between the anchor bolt 24 and the nut 24a as an insertion groove having an opening instead of the insertion hole of the connecting plate portion 81b of the fixing portion main body 81, and is inserted and fixed. Further, it may be possible to eliminate the necessity of attaching and detaching the nut.

  On both side plates 81a and 81a of the fixed portion main body 81, two arm plates 83a and 83a are integrally attached by welding or the like so as to protrude forward and have a pressing portion 82 at the tip. The pressing portion 82 that connects the two arm plates 83a and 83a is applied to the attachment portion 23c of the flexible expansion joint 23 so that it can be temporarily fixed.

In the temporary fixing jig 80 configured as described above, the insertion hole of the fixing portion main body 81 is attached to the anchor bolt 24 from which the nut 24a is removed, and the holding arm portion is pressed so as to press the attachment portion 23c of the flexible expansion joint 23. The temporary fixing state can be maintained by fastening the fixing portion main body 81 to the anchor bolt 24 with the nut 24a by applying the pressing portion 82 of 83, and the temporary fixing can be performed by removing the temporary fixing jig 80 from the anchor bolt 24. Can be opened.
As a result, the amount of protrusion of the presser arm 83 can be shortened, and the weight can be reduced and simplified. In addition, when a conventional string or the like is used for temporary fixing without requiring a press holding release means. In comparison, it can work efficiently and can be positioned by applying a flexible expansion joint.

  In the above-described embodiment, the flexible expansion joint including the expansion / contraction part folded on substantially Ω as the expansion / contraction part is described as an example of the flexible expansion / contraction joint. The present invention can be similarly applied to flexible expansion joints having other cross-sectional shapes such as a substantially W-shaped cross-sectional shape in which the stretchable portions are continuous by three or five arc portions.

30 Temporary fixing jig 31 Fixing part main body 31a Side plate part 31b Intermediate plate part 31c Insertion groove 32 Pressing part 33 Pressing arm part 33a Arm member 33b Pin 34 Pressing and holding release means 35 Toggle link mechanism 35a First link 35b Pin 35c First Two links 35d Pin 35e Pin 35f Operation lever 40 Temporary fixing jig 41 Fixed portion main body 41a Upper plate portion 41b Bottom plate portion 41c Connecting plate 41d Insertion groove 41e Width regulating portion 41f Extension portion 42 Pressing portion 43 Pressing arm portion 44 Press holding release Means 45 Spring mechanism 45a Spring main body 45b Spring material 46 Handle 50 Temporary fixing jig 51 Fixed portion main body 51a Side plate portion 51b Connection plate portion 52 Pressing portion 53 Pressing arm portion 53a Arm plate 50A Temporary fixing jig 51 Fixing portion main body 52 Pressing portion 53 Presser arm portion 54 Long hole 55 Bolt hole 56 Bolt nut 50B Temporary fixing jig DESCRIPTION OF SYMBOLS 1 Fixing part main body 52 Pressing part 53 Pressing arm part 57 Square hole 58 Square protrusion 50C Temporary fixing jig 51 Fixing part main body 52 Pressing part 53 Pressing arm part 59 Spring 59a Guide rod 59b Guide hole 60 Temporary fixing jig 61 Fixed portion main body 61a Post portion 61b Connecting portion 62 Pressing portion 60A Temporary fixing jig 61 Fixed portion main body 61a Post portion 61b Connecting portion 62 Pressing portion 64 Long hole 65 Bolt hole 66 Bolt nut 60B Temporary fixing jig 61 Fixed portion main body 61a Post Portion 61b Connecting portion 62 Pressing portion 64 Long hole 65 Bolt hole 66 Bolt nut 70 Temporary fixing jig 71 Fixing portion main body 72 Pressing portion 73 Pressing arm portion 74 Screw shaft (screw member)
55 Nut 76 Handle part 77 Operation part 80 Temporary fixing jig 81 Fixed part main body 81a Side plate part 81b Connecting plate part 82 Pressing part 83 Pressing arm part 83a Arm plate 20 Fixing structure of expansion joint for concrete structure (fixing structure)
21 Concrete structure 22 Joint portion 23 Flexible expansion joint 23a Arc portion 23b Stretch portion 23c Fitting portion 23d Projecting edge portion 24 Anchor bolt 24a Nut 25 Storage portion 26 Protective cover 26a Folding portion 27 Presser member 27a Reinforcement member 27b Reinforcement Member 27c Bolt nut 28 Fixing member 28a Intermediate plate-like portion 28b Mounting hole 28c Both-side plate portion 28d Pressing arm portion 28e Locking projection portion 28f Elastic contact portion

Claims (26)

Flexible expansion and contraction that attaches the clamped parts of both ends of flexible expansion joints that are placed across the joints between concrete structures by using a fixing member that is fixed to the anchor bolt via the pressing member. When temporarily fixing the joint,
The fixing bolt body is fixed to the anchor bolt, and the tip pressing portion of the presser arm portion rotatably provided on the fixing bolt main body is pressed against the flexible expansion joint, and the pressing state by the presser arm portion is pressed. A method for temporarily fixing a flexible expansion joint, wherein the flexible expansion joint is held and temporarily fixed. Flexible expansion and contraction that attaches the clamped parts of both ends of flexible expansion joints that are placed across the joints between concrete structures by using a fixing member that is fixed to the anchor bolt via the pressing member. When temporarily fixing the joint,
The fixing body is fixed to the anchor bolt, and the tip pressing portion of the presser arm provided on the fixing portion is pressed against the flexible expansion joint, and the pressing state by the pressing arm is held temporarily. A method for temporarily fixing a flexible expansion joint, wherein the flexible expansion joint is fixed.   The flexible expansion joint according to claim 1 or 2, wherein the presser arm portion opens a space for installing the presser member and presses the flexible expansion joint by a tip pressing portion. Temporary fixing method.   The method for temporarily fixing a flexible expansion joint according to any one of claims 1 to 3, wherein the pressing arm is held in a pressed state by a toggle link mechanism or a biasing means using a spring.   The method of temporarily fixing a flexible expansion joint according to claim 2, wherein the fixing portion main body is formed in a U shape with an opening on the anti-anchor bolt side and fixed to the anchor bolt.   A long hole or a plurality of holes are formed on either side of the opening of the fixing part main body or both sides of the presser arm, and the position of the presser arm is adjusted and fixed according to the thickness of the flexible expansion joint. The method for temporarily fixing a flexible expansion joint according to claim 5, wherein:   The method of temporarily fixing a flexible expansion joint according to claim 2, wherein the side end portion of the flexible expansion joint is pressed and temporarily fixed by the presser arm fixed to the fixing portion main body. . Flexible expansion and contraction that attaches the clamped parts of both ends of flexible expansion joints that are placed across the joints between concrete structures by using a fixing member that is fixed to the anchor bolt via the pressing member. When temporarily fixing the joint,
The fixing body is fixed to the anchor bolt, the fixing body and the presser arm are tilted and movably connected up and down by a spring, and the flexible expansion joint is pressed at the tip of the presser arm. A method for temporarily fixing a flexible expansion joint, wherein the pressing state by the portion is held and temporarily fixed. Flexible expansion and contraction that attaches the clamped parts of both ends of flexible expansion joints that are placed across the joints between concrete structures by using a fixing member that is fixed to the anchor bolt via the pressing member. When temporarily fixing the joint,
Fixing both ends of the fixed portion main body provided with a strut portion and a connecting portion configured in a gate shape straddling the flexible expansion joint on the anchor bolt, and a presser portion protruding from the connecting portion of the fixed portion main body A method for temporarily fixing a flexible expansion joint, wherein the flexible expansion joint is pressed and the pressing state by the pressing portion is held and temporarily fixed.   The strut portion of the fixed portion main body is configured in an L shape, and the position of the connecting portion is adjusted according to the thickness of the flexible expansion joint in a long hole formed in either the strut portion or the connecting portion. The method for temporarily fixing a flexible expansion joint according to claim 9, wherein the flexible expansion joint is fixed.   The position of the pressing portion is adjusted and fixed in a long hole formed in one of the connecting portion and the pressing portion of the fixing portion main body according to the thickness of the flexible expansion joint. The method for temporarily fixing a flexible expansion joint according to claim 9. Flexible expansion and contraction that attaches the clamped parts of both ends of flexible expansion joints that are placed across the joints between concrete structures by using a fixing member that is fixed to the anchor bolt via the pressing member. When temporarily fixing the joint,
The fixing bolt body is fixed to the anchor bolt, and a presser arm is provided on a screw member provided on the fixing bolt main body so as to be rotatable about an axis parallel to the anchor bolt, and the presser arm is supported by a handle attached to the presser arm. The flexible expansion joint is temporarily fixed by holding the flexible expansion joint at its tip and holding the pressing state by the holding portion to temporarily fix the flexible expansion joint. Flexible expansion and contraction that attaches the clamped parts of both ends of flexible expansion joints that are placed across the joints between concrete structures by using a fixing member that is fixed to the anchor bolt via the pressing member. A joint temporarily fixing jig,
A fixing part main body fixed to the anchor bolt, a pressing arm part provided with a pressing part that presses the flexible expansion joint at a distal end part thereof, and a pressing arm part that has a base end part rotatably provided on the fixing part main body, and the pressing arm. A temporary holding jig for a flexible expansion joint, comprising: a holding and releasing means for holding and releasing a pressing state by a pressing portion by rotating the portion. Flexible expansion and contraction that attaches the clamped parts of both ends of flexible expansion joints that are placed across the joints between concrete structures by using a fixing member that is fixed to the anchor bolt via the pressing member. A joint temporarily fixing jig,
A fixing portion main body fixed to the anchor bolt, and a presser arm portion having a base end portion fixed to the fixing portion main body and a pressing portion pressing the flexible expansion joint at a distal end portion. A temporary fixing jig for a flexible expansion joint.   15. The presser arm according to claim 13 or 14, wherein the presser arm portion is formed in a substantially portal shape having a space for pressing the flexible expansion joint across the presser member for pressing the attachment portion. Temporary fixing jig for flexible expansion joints.   The temporary holding of the flexible expansion joint according to claim 13 or 15, characterized in that the pressing and releasing means is constituted by a toggle link mechanism, and the pressing state and the opening can be operated by rotating the operation lever. Jig.   The pressing holding release means is constituted by an urging means for urging the presser arm portion in the pressing direction, and the pressing state is held by the urging force and the opening operation can be performed against the urging force. The jig for temporarily fixing a flexible expansion joint according to claim 13 or 15.   18. The presser arm portion is constituted by two arm members, and the pressing portion is provided on each of the tip ends of the arm members so as to protrude to both inner sides or both outer sides. A jig for temporary fixing of the flexible expansion joint according to 1.   15. The temporary fixing jig for a flexible expansion joint according to claim 14, wherein the fixing portion main body is formed in a U shape with an opening on the side opposite to the anchor bolt so as to be fixed to the anchor bolt.   A long hole or a plurality of holes are formed in either one of the both sides of the opening of the fixing portion main body or the both sides of the presser arm, and the position of the presser arm is set in the long hole or the plurality of holes. 20. The temporary fixing jig for a flexible expansion joint according to claim 19, wherein the jig is temporarily adjustable.   The temporary fixing of the flexible expansion joint according to claim 14, wherein the presser arm fixed to the fixing portion main body is configured to be temporarily fixed by pressing a side end portion of the flexible expansion joint. Jig. Flexible expansion and contraction that attaches the clamped parts of both ends of flexible expansion joints that are placed across the joints between concrete structures by using a fixing member that is fixed to the anchor bolt via the pressing member. A joint temporarily fixing jig,
The flexible expansion joint is provided with a fixed portion main body fixed to the anchor bolt, and a presser arm that is tilted and movable up and down by a spring to the fixed portion main body. A temporary fixing jig for a flexible expansion joint, wherein the jig is temporarily fixed while holding the pressed state by the pressing portion. Flexible expansion and contraction that attaches the clamped parts of both ends of flexible expansion joints that are placed across the joints between concrete structures by using a fixing member that is fixed to the anchor bolt via the pressing member. A joint temporarily fixing jig,
From the connecting part of the gate-shaped fixing part main body provided with a column part fixed between the pair of anchor bolts straddling the flexible expansion joint and a connecting part connected to these column parts, A flexible expansion joint, characterized in that the flexible expansion joint is configured to include a protruding presser part and holds the flexible expansion joint by the presser part, and holds and temporarily fixes the pressing state of the presser part. Fixing jig.   The fixed part main body is formed with an L-shaped support column, and a long hole is formed in either the support column or the connecting part so that the position of the connecting part depends on the thickness of the flexible expansion joint. 24. The temporary fixing jig for a flexible expansion joint according to claim 23, wherein the jig can be adjusted and fixed.   The position of the pressing portion is adjusted according to the thickness of the flexible expansion joint in a long hole formed in one of the connecting portion of the fixing portion main body and the pressing portion, and can be fixed. The jig for temporary fixing of the flexible expansion joint according to claim 23. Flexible expansion and contraction that attaches the clamped parts of both ends of flexible expansion joints that are placed across the joints between concrete structures by using a fixing member that is fixed to the anchor bolt via the pressing member. A joint temporarily fixing jig,
A fixing portion main body fixed to the anchor bolt, a presser arm provided on a screw member provided on the fixing portion main body so as to be rotatable around an axis parallel to the anchor bolt, and a handle attached to the presser arm. And a flexible arm characterized in that the presser arm is rotated by the handle and the flexible expansion joint is pressed at the tip, and the pressing state by the presser is held and temporarily fixed. For temporarily fixing flexible expansion joints.

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