JP5464736B2 - Fixing structure of expansion joint for concrete structure and fixing method thereof - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing structure and a fixing method for an expansion joint for a concrete structure, and a flexible expansion joint at a joint portion of a concrete structure such as a water channel, a water treatment facility, a tunnel, or a common groove constructed with concrete. In order to prevent water leakage and relative displacement, in particular, it is intended to simplify the formation of the surface correction portion for fixing the expansion joint and to suppress the generation of waste.

  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, displacement during earthquakes, temperature changes, etc., and install flexible expansion joints such as rubber and synthetic resin waterstops inside the concrete structure Has been done.

  In the conventional concrete structure, for example, as shown in FIG. 5, a series of concave grooves 3a are formed by partially cutting both sides of the joint portion 2 of the concrete structure 1, and a special cement system is formed in the continuous concave grooves 3a. A mortar is placed to form a surface correction portion 3 that becomes the reference surface 1b, and a reinforcing cloth 4 is laid on the surface correction portion 3 so as to straddle the joint portion 2, and is made of an elastic member such as rubber or synthetic rubber. The joints 5b, 5b at both ends of the expansion joint 5 having the expansion / contraction part 5a folded at the intermediate part are arranged and covered with the protective sheet 6, and the joints 5b, 5b, etc. at both ends are pressed through the presser plate 7. It is made to fix with the resin anchor 8 (refer patent document 1).

JP-A-9-144148

  When the expansion joint 5 is fixed to the joint portion 2 of such a concrete structure 1, it is necessary to form the surface correction portion 3 that becomes the reference surface 1b on the hollow surface 1a of the housing.

  For this reason, the conventional construction process, for example, as shown in FIG. 6, performs cutting on both edges of the predetermined width (designed surface correction width) around the joint portion 2 to form two incisions 1c. After chamfering between the notches 1c and 1c to form a series of concave grooves 3a, a special cement-based mortar is placed in the concave grooves 3a to finish the surface flat to form the surface correction portion 3 I have to.

  However, if it is intended to crush the vicinity of the joint, as shown in FIG. 6 (b), the corner corners 1d and 1d are likely to be chipped off. There is a problem that a large amount of material (loss) is produced, and there is a problem that the amount of the special cement-based mortar necessary for forming the surface correcting portion 3 is also increased.

  Further, when the joint portion 2 is filled with a rubber joint material 9 such as silicone, there is a problem that the filling depth increases and the filling amount increases.

  The present invention has been made in view of the problems of the prior art, and is a concrete capable of reliably and easily forming a surface correction portion necessary for fixing an expansion joint and suppressing generation of waste. An object of the present invention is to provide a structure for fixing an expansion joint for a structure and a method for fixing the structure.

In order to solve the above-mentioned problems, the expansion structure for a concrete structure expansion joint according to claim 1 of the present invention is a concrete structure in which a flexible expansion joint is disposed and fixed across a joint between concrete structures. a fixing structure of a use expansion joints, on both sides away from the joint portion of the concrete structure surface anchor attachment portion at both ends of the front Symbol expansion joint is located, each surface modified portion forming two rows, wherein A V-groove is formed between the edge portion of the surface correction portion and the edge portion of the joint portion to form a water-stopping treatment portion, and the adhesive portion is disposed on the two surface correction portions. The expansion joint is fixed across the joint.

  The expansion structure for a concrete structure expansion joint according to claim 2 of the present invention, in addition to the structure according to claim 1, directly fixes the attachment portion to the surface correction portion with an anchor bolt. Or it fixes through the fixing member fastened via an anchor bolt, It is characterized by the above-mentioned.

Furthermore, the fixing method of the expansion joint for concrete structure according to claim 3 of the present invention is to fix the flexible expansion joint arranged across the joint between the concrete structures to the concrete structure, After forming two surface correction portions on both sides of the surface of the concrete structure where the joint portions at both ends of the expansion joint are located , the edge portions of the surface correction portion and the joint portions are formed. A V-groove is formed between the edge and the water-stopping treatment, and the fastening portion is disposed and tightened on the surface correction portion of the two strips across the joint portion. It is characterized by doing so.

Moreover, the fixing method of the expansion joint for concrete structures of Claim 4 of this invention adds to the structure of Claim 3, and performs the cutter process of the said 2 surface correction | amendment part, respectively 2 items | stripes. The two grooves are formed by chamfering between the two grooves, and then the two grooves are filled with a cement-based mortar material.

Furthermore, the fixing method of the expansion joint for concrete structures of Claim 5 of this invention adds the structure to the said surface correction part to the said surface correction part in addition to the structure of Claim 3 or 4 , The said surface. An anchor bolt is implanted in the correction portion, or is performed through a fixing member fastened to the anchor bolt.

According to the fixing structure of the expansion joint for a concrete structure according to claim 1 of the present invention, the expansion joint for a concrete structure in which the flexible expansion joint is arranged and fixed across the joint portion between the concrete structures. Two surface correction portions are formed on both sides of the surface of the concrete structure where the anchoring portions at both ends of the expansion joint are located, respectively, and the ends of the surface correction portions are fixed. A V-groove is formed between the edge portion and the edge portion of the joint portion to constitute a water-stopping treatment portion, and the joint portion is arranged on the two surface correction portions to dispose the joint portion. Since the expansion joint is fixed across the two ends, the joints on the side of the joints on the side of the joints are separated from each other with the joints sandwiched between them, and the part of the joints is divided into two parts. By doing so, the corners can be prevented from falling off, and the surface correction necessary for fixing the expansion joint It is possible to reliably and easily formed, it is possible to suppress the generation of waste.
Moreover, since the water-stopping treatment part is provided between the surface correction part and the attachment part, the water-stopping part by the waterproof sheet or the water-stopping material is provided, so that water can be stopped more reliably. it can.
Furthermore, since the water-stopping treatment part is formed by forming a V-groove between the end edge part of the surface correction part and the end edge part of the joint part, the surface correction part and the attachment part are formed by the V-groove. Water can be prevented and led to the V-groove, water can be reliably stopped, and construction can be performed in advance before the expansion joint is attached.

  Further, according to the fixing structure of the expansion joint for concrete structures according to claim 2 of the present invention, the fixing of the attachment portion to the surface correction portion is directly fixed by an anchor bolt or tightened via the anchor bolt. The expansion joint can be securely fixed by fixing directly with an anchor bolt or by fixing with a fixing member that is tightened with an anchor bolt. In the case of fixing via a hole, it can be fixed without drilling the attachment portion of the expansion joint.

Furthermore, according to the fixing method of the expansion joint for concrete structures of Claim 3 of this invention, the flexible expansion joint arrange | positioned ranging over the joint part between concrete structures is fixed to a concrete structure. At the time, after forming two surface correction portions on both sides of the surface of the concrete structure where the joint portions at both ends of the expansion joint are located, respectively , the edge portion of the surface correction portion and the surface A V-groove is formed between the edge portion of the joint portion and water-stopping treatment is performed, and the fastening portion is disposed and tightened across the joint portion on the two surface correction portions. The joints on the joint side of the two surface correction parts are spaced apart from the joint part, and the surface correction part is formed by dividing the two parts into corners. It can prevent chipping and secure the surface correction part necessary for fixing the expansion joint. And easily it can be formed, it is possible to suppress the generation of waste, the anchor attachment portion of the expansion joint can be reliably fixed.
Further, since the water-stopping treatment is applied to the edge portion on the joint portion side of the surface of the surface correction portion, the water-stopping treatment such as applying a waterproof sheet or a water-stopping material further ensures water-stopping. be able to.
Furthermore, since the water-stopping treatment is configured by forming a V-groove between the end edge portion of the surface correction portion and the end edge portion of the joint portion, the surface correction portion and the attachment portion are formed by the V-groove. It is possible to prevent water from entering between the two and guide it to the V-groove, so that water can be reliably stopped, and construction can be performed in advance before the expansion joint is attached.

Moreover, according to the fixing method of the expansion joint for concrete structures of Claim 4 of this invention, the surface correction | amendment part of the said 2 articles | strands carries out the cutter process of each 2 stripes, and chamfers between the 2 articles | strands. Then, these two grooves were filled with cement-based mortar material, so that the four grooves for the two grooves were cut and the joints were cut by chipping. It is possible to reliably prevent the corner corners from falling off and to easily form two surface correction portions.

Furthermore, according to the fixing method of the expansion joint for a concrete structure according to claim 5 of the present invention, the anchoring portion is fixed to the surface correction portion, and anchor bolts are implanted in the surface correction portion. Since it is done through a fixing member that is tightened to the anchor bolt, the expansion joint is securely fixed by fixing directly with the anchor bolt or by fixing through the fixing member that is tightened through the anchor bolt. In particular, when fixing through a fixing member, it can be fixed without drilling in the attachment portion of the expansion joint.

It is a cross-sectional view concerning one Embodiment of the fixation structure of the expansion joint for concrete structures of this invention. It is a schematic process drawing concerning one embodiment of a fixing method of an expansion joint for concrete structures of this invention. It is explanatory drawing of the water stop process concerning one Embodiment of the fixation structure of the expansion joint for concrete structures of this invention, and its fixing method. It is a cross-sectional view concerning other embodiment of the fixation structure of the expansion joint for concrete structures of this invention. It is a cross-sectional view and a cross-sectional view of the fixed structure of the expansion joint for concrete structures as an example of the concrete structure to which this invention is applied. It is a schematic process drawing of the fixing method of the conventional expansion joint for concrete structures.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.
In this concrete structure expansion joint fixing structure (hereinafter simply referred to as a fixed structure) 10, for example, as shown in FIG. 1, it is installed so as to straddle the joint portions 12 of the existing concrete structures 11, 11. Water, and the concrete structure 11, 11 on both sides of the joint 12 is allowed to subsidize, and the wall portion is allowed to expand and contract due to seismic displacement and temperature change. The surface modification portion 14 for fixing the expansion joint 13 is characterized in that the corners 11d and 11d on the joint portion 12 side of the concrete structures 11 and 11 are prevented from being dropped, and the base surface 11a is used as a reference. By forming the surface correction portion 14 to be the surface 11b, construction can be easily performed.

  In this fixing structure 10, the surface correction portions 14 for attaching the fastening portions 13 b and 13 b at both ends of the expansion and contraction portion 13 a of the expansion joint 13 are provided on both sides sandwiching the joint portion 12 as shown in FIGS. 1 and 2. It is formed away from the joint portion 12, and the surface correction portions 14 and 14 divided into two are formed.

  The two surface correction portions 14 and 14 are subjected to cutter processing along both edges in the width direction, and the cuts (cutter grooves) 11c and 11c corresponding to the chip depth are predetermined widths (designed surface correction width: A total of four cuts 11c are formed (see FIG. 2A).

  And between the two notches 11c and 11c corresponding to the two surface modification parts 14 and 14 among the four notches, two grooves 14a and 14a are formed by chipping (FIG. 2 ( b)).

  By carrying out the chiseling process in this way, the notch 11c is formed inside the concrete structure 11 from the joint part 12 of the corner corner part 11d of the joint part 12. Therefore, the force of the chiseling process is applied from the notch 11c to the joint part. It is not transmitted to the 12 side, and the corner corner 11d can be prevented from being dropped off.

  After forming the two grooves 14a, 14a at intervals with the joint 12 interposed therebetween, a cement-based mortar material such as a special cement-based mortar is cast and filled in the grooves 14a, 14a to flatten the surface. Finish. Thereby, two surface correction parts 14 and 14 are completed (refer to Drawing 2 (c)).

  After the surface correction portions 14 and 14 are completed on the concrete structures 11 and 11, respectively, the expansion joint 13 is fixed in the same manner as before. For example, as shown in FIG. Reinforced fabrics 15 such as polyester are laid across the joints 12, and are made of an elastic member such as rubber or synthetic rubber. Is covered with a protective sheet 16, and the fastening portions 13b, 13b and the like at both ends are fixed with a resin anchor 18 and a nut 18a through a pressing plate 17. Further, a joint material 19 is attached to the joint portion 12 as necessary.

  In addition, when fixing this expansion joint 13, as shown in FIG. 1, for example, as shown in FIG. 1, a water stop material is interposed between the attachment portions 13b, 13b and the surface correction portions 14, 14. Water treatment can also be performed.

  In addition, as shown in FIG. 3, as shown in FIG. 3, a water-stopping material 21 such as water-expanded rubber or butyl rubber is used so as to straddle the edge portion on the joint portion 12 side of the surface correction portion 14 and the concrete structure 11. By attaching it, it is possible to improve the water-stopping property.

  Furthermore, as a water stop process, as shown in FIG.3 (b), the V groove 22 is formed between the edge part by the side of the joint part 12 of the surface correction part 14, and the concrete structure 11, and water immersion is V By making it guide to the groove 22, the water stoppage can be improved, and the waterstop treatment by the V groove 22 can be performed in advance before the expansion joint 13 is attached.

  A flexible expansion joint 13 used in the fixing structure 10 includes a folded portion 13a folded in a substantially Ω shape at a middle portion in the width direction of a long band, and flat plate-like attachment portions at both width direction ends. 13b is provided and is made of an elastic member such as rubber or synthetic resin, and one or more reinforcing members are embedded as required.

  The expansion joint 13 is not limited to the one shown in FIG. 1, and for example, as shown in FIG. 2 (d), the shape of the expansion / contraction part 13 a may be different such as a substantially inverted U shape, The shape is not limited to those shown in the drawings, and other shapes may be used.

  According to the fixing structure 10 and the fixing method of the expansion joint for concrete structure configured as described above, the flexible expansion joint 13 is arranged and fixed across the joint portion 12 between the concrete structures 11 and 11. In the fixed structure of the expansion joint for concrete structure, the surface correction portions 14 and 14 are respectively provided on both sides of the surface of the concrete structure 11 where the attachment portions 13b and 13b of the both ends of the expansion joint 13 are located. Are formed on the two surface correction portions 14 and 14, and the expansion joint 13 is fixed across the joint portion 12 so that the two surface correction portions 14 and 14 are fixed. 14 end portions on the joint portion 12 side are in a state of being spaced from each other with the joint portion 12 interposed therebetween, and the corner correction portions 14 and 14 are formed by dividing the surface correction portions 14 and 14 into two strips, thereby missing the corner portions 11d and 11d. Can prevent The surface modification portion 14, 14 necessary for fixing the expansion joint 13 can be reliably and easily formed, it is possible to suppress the generation of waste.

  Furthermore, according to the fixing structure of the expansion joint for concrete structure and the fixing method thereof, the water stop treatment is performed by providing a water stop treatment portion between the surface correction portion and the staking portion. By providing the water-stop treatment part by the waterproof sheet or the water-stop material 21, the water-stop treatment part can be further reliably stopped and the water-stop treatment part is connected to the edge portions of the surface correction portions 14 and 14 and the edge of the joint portion 12. By forming the V-groove 22 between the two portions, the V-groove 22 can prevent water from entering between the surface correcting portions 14 and 14 and the attachment portions 13b and 13b, and can be guided to the V-groove 22. Water can be surely stopped, and the V-shaped groove 22 can be preliminarily constructed at the time of construction of the surface correction portion before the expansion joint 13 is attached.

  Next, another embodiment of the fixing structure of the expansion joint for concrete structure according to the present invention will be described with reference to FIG. 4. In the same part as the above-described embodiment, the same symbol is given, A duplicate description is omitted.

  The fixing structure of the expansion joint for concrete structure (hereinafter simply referred to as a fixing structure) 30 is different in the method of fixing the attachment portion 13b of the expansion joint 13 to the surface correction portions 14 and 14, and is not limited by an anchor bolt. The hole processing for the anchor bolt is omitted by fixing with the fixing member 32 via the pressing member 31 without directly fixing.

  In this fixing structure 30, as shown in FIG. 4, a holding member 31 applied to the attachment portion 13b of the expansion joint 13 is used, and a substantially U-shaped lip groove-shaped transverse cross-sectional shape having an open top is used. For example, the groove width is 50 mm, the groove 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. .

  When it is necessary to further increase the rigidity, a flat plate may be interposed on the groove bottom.

  In the fixing structure 30 using such a pressing member 31, the expansion joint 13 is not directly fixed to the concrete structures 11 and 11 by the anchor bolt 18 and the nut 18 a that are planted in the surface correction portions 14 and 14. The fixing member 32 is tightened via the anchor bolt 18 and the nut 18 which are implanted in the outer surface correction portions 14, 14, and the pressing member 31 is fixed via the fixing member 32.

  The fixing member 32 is provided with an intermediate plate-like portion 32a inserted and fixed by an anchor bolt, and an attachment hole 32b for the anchor bolt 18 is formed, and bent so that both sides of the intermediate plate-like portion 32a are bent inward. Both side plate portions 32c and 32c are formed by processing. The presser arm portions 32d for pressing the presser member 31 are formed at the respective distal end portions of the both side plate portions 32c so as to protrude, and the base plate portions of the both side plate portions 32c are spaced apart from the intermediate plate-like portion 32a. An elastic contact portion 32f that protrudes inward so as to be in contact with the concrete structure 11 is formed integrally.

  In this fixing member 32, the protruding length of the presser arm portion 32d is set to a length corresponding to the groove width of the presser member 31, and a locking projection 32e is formed at the tip of the presser arm portion 32d. The stop projection 32e can be locked in a state where the stop protrusion 32e is located outside the presser member 31 (a state where the presser member 31 is passed over).

  Further, in the fixing member 32, when the distance from the lower surface of the intermediate plate portion 32a to the lower surface of the presser arm portion 32d of the both side plate portions 32c (corresponding to the height of the side plate portion) is fastened to the anchor bolt 18, the presser is pressed. It is set so that the contact pressure required for crimping the adhesive portion 13b of the expansion joint 13 to the concrete structure 11 via the member 31 can be generated.

  Next, a method for fixing the expansion joint 13 using such a fixing member 32 is to manufacture the expansion joint 13, the presser member 31 and the fixing member 32 in advance at the factory, and at the construction site, the anchoring portion of the expansion joint 13 is used. Anchor bolts 18 are planted on the surface correction portions 14 and 14 of the concrete structures 11 and 11 that are outside the b and 13b.

  After that, first, a reinforcing cloth 15 is laid so as to straddle the two surface correction portions 14 and 14 and the joint portion 12 of the concrete structures 11 and 11, the expansion joint 13 is arranged thereon, and the outer side thereof is a protective cover. 16, the elastic member 13 is installed.

  Then, the pressing member 31 is disposed on the attachment portions 13b and 13b of the expansion joint 13, and the fixing member 32 is tightened using the anchor bolt 18 at the positions necessary for temporary fixing, such as both ends of the pressing member 31, to hold the pressing member. The expansion joint 13 is temporarily fixed via the member 31.

  In addition, in the connection part in the case of arrange | positioning the pressing member 31 on the attachment part 13b, the clearance gap (clearance) for the position adjustment of a bolt hole like the case where it fixes directly with the anchor bolt so far is unnecessary, The presser member 31 can be disposed in a state of being in close contact with each other, and in particular, the corner portion can be connected and disposed without providing a gap (clearance), whereby the surface pressure can be uniformized and tightened.

  After temporarily fixing in this way, the anchor bolt 18 is inserted into the mounting hole 32b of the intermediate plate-like portion 32a of the fixing member 32 and temporarily fixed with the nut 18a to be able to rotate or move, and then the anchor bolt 18 is centered. The presser arm portion 32d is positioned on the presser member 31 so that the locking projection 32e at the distal end of the fixing member 32 gets over the presser member 31 by rotating or moving to the upper end of the fixing member 32, and elastic contact of the base end portion is made. The part 32f is brought into contact with the concrete structure 11.

  After that, the fixing member 32 is tightened by tightening the nut 18 a to the anchor bolt 18, and the attachment portion 13 b of the expansion joint 13 is pressed against the surface correction portions 14, 14 of the concrete structure 11 via the pressing member 31.

  As the anchor bolt 18, for example, a chemical anchor is used, and a stainless steel M16 bolt is used.

  The fixing of the expansion joint 13 is completed by repeating such temporary fixing of the fixing member 32 to the anchor bolt 18, rotation or movement of the fixing member 32, and tightening operation of the fixing member 32.

  In the tightening state by the fixing member 32 in the fixing structure 30, the tightening force applied to the intermediate plate-like portion 32a of the fixing member 32 causes the two presser arm portions 32d of the side plate portions 32c and the elastic contact portion 32f to move. It will be distributed and added to a total of two places, and the tightening surface pressure can be made uniform as compared with the case where it is directly fixed to the anchor bolt so far. Thereby, the bolt pitch of the anchor bolt 18 can also be enlarged, and a man-hour reduction can be aimed at.

  Further, in this fixing structure 30, both side plates 32 c of the fixing member 32 are elastically deformed so as to spread outward by the tightening force, and both sides of the presser member 31 are elastically deformed by the tightening force. Since the part is fixed in a state of being elastically deformed so as to fall down, even if the concrete structure 11 is displaced, the reduction of the tightening surface pressure is reduced by the spring effect due to the elastic deformation and the fixed state is maintained. Can do.

  Furthermore, in this fixing structure 30, the fastening with the anchor bolt 18 is limited to the thickness of the intermediate plate-like portion of the fixing member 32 as compared with the case where the attachment portion 13 b of the expansion joint 13 is directly fixed with the anchor bolt. The tightening height can be lowered by the thickness of the joint 13, and the influence on the internal space of the concrete structure 11 can be suppressed.

  Further, the retaining protrusion 32e of the pressing arm 32d of the fixing member 32 makes it difficult to disengage the pressing arm 32d of the fixing member 32 even if the concrete structure 11 is displaced, thereby increasing the prevention effect. .

  According to such a fixing structure 30 and its fixing method, the bolt pitch is measured after the position of the anchor bolt so far is determined, and holes such as a flexible expansion joint, a pressing member, and a protective cover are measured based on the bolt pitch. The flexible expansion joint 13, the presser member 31, and the fixing member 32 can be manufactured in parallel with the installation of the anchor bolt 18 without the need for processing, and the construction of the fixing structure 30 is completed in a short time. be able to.

DESCRIPTION OF SYMBOLS 10 Fixing structure of expansion joint for concrete structures 11 Concrete structure 11a Empty surface 11b of base body Reference surface 11c Notch 11d Corner corner part 12 Joint part 13 Flexible expansion joint 13a Expansion part 13b Adhesion part 14 Surface correction part 14a Concave groove 15 Reinforcement cloth 16 Protective cover 17 Presser member 18 Anchor bolt 18a Nut 19 Joint material 21 Water-stop material (water-stop treatment)
22 V groove (water stop treatment)
30 Fixing structure of expansion joint for concrete structure 31 Holding member 32 Fixing member 32a Intermediate plate-like portion 32b Mounting hole 32c Both side plate portion 32d Holding arm portion 32e Locking projection portion 32f Elastic contact portion

Claims (5)

A fixing structure for an expansion joint for a concrete structure in which a flexible expansion joint is arranged and fixed across a joint between concrete structures,
Two surface correction portions are formed on both sides of the surface of the concrete structure where the attachment portions at both ends of the expansion joint are located, respectively, and an edge portion of the surface correction portion and the joint portion are formed. A V-groove is formed between the end edge of the expansion joint and a water-stopping treatment portion is formed, and the attachment portion is arranged on the surface correction portion of the two strips so as to straddle the joint portion. A fixed structure for an expansion joint for a concrete structure, characterized by being fixed.   2. The concrete structure according to claim 1, wherein the fixing portion is fixed to the surface correcting portion directly by an anchor bolt or by a fixing member that is tightened through the anchor bolt. Expansion joint fixing structure. When fixing a flexible expansion joint placed across the joint between concrete structures to the concrete structure,
After forming two surface correction portions on both sides of the surface of the concrete structure where the joint portions at both ends of the expansion joint are located apart from the joint portion,
Between the edge part of the surface correction part and the edge part of the joint part, a V groove is formed so as to perform a water stop treatment,
Wherein on the surface modification of Article 2, the concrete structure for expansion joints fixing method which is characterized in that so as to extend over the joints and fixed tightened to place the anchor attachment portion. Each of the two surface modification portions is subjected to two cutters, and between them is chamfered to form two concave grooves, and then these two concave grooves are filled with a cement-based mortar material. The method for fixing an expansion joint for a concrete structure according to claim 3, wherein the expansion joint is formed. The fixing to the surface correction portion of the attachment portion is performed by implanting an anchor bolt in the surface correction portion or via a fixing member tightened to the anchor bolt. The fixing method of the expansion joint for concrete structures of 3 or 4 .

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