JP4637645B2 - Flexible waterproof joint and its construction method - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a flexible waterproof joint and a method for constructing the flexible waterproof joint, and the waterproof and relative of a joint part of a concrete structure such as a water channel, a water treatment facility, a marine revetment, a tunnel, and a common groove constructed by handing over concrete. The preparatory work in the construction of the flexible waterproof joint that enables the displacement can be simplified.

  The joints of wall parts such as waterways, water tanks, or underground gutters built in the ground such as joint grooves, which are concrete structures constructed by passing concrete over, stop both inside and outside and the concrete structures on both sides It is necessary to allow expansion and contraction of the wall portion due to the earthquake displacement and temperature change, and a flexible water stop joint such as a water stop plate is interposed.

  As a flexible water-stopping joint interposed in the joint portion of such a concrete structure, for example, there is a water-stop plate 1 disclosed in Patent Document 1, and as shown in FIG. A plurality of locking ridges 3 are provided at both ends, and the locking ridges 3 at the respective ends are embedded and fixed in the concrete to be placed.

In addition, as a flexible waterproof joint for a concrete structure such as a joint groove, for example, there is a flexible rubber joint 6 disclosed in Patent Literature 2, and as shown in FIG. The curved portion 7 and a pair of flange portions 8 that are integrally connected between the open ends of the curved portion 7 and are fixed in a substantially V-shaped cross section with the curved portion 7 interposed therebetween are configured. As shown in (b), the anchor bolt 9 attached to the flange portion 8 is embedded and fixed in the concrete to be cast.
JP-A-9-105166 JP 2002-167789 A

  However, in the flexible water-stop members 1 and 6 of Patent Document 1 and Patent Document 2 described above, it is necessary to hold the flexible water-stop members 1 and 6 in a predetermined position before placing concrete. In the case of the water stop plate 1 of Document 1, as shown in FIG. 12 (b), the engaging ridge 3 on the preceding concrete side is suspended from the reinforcing reinforcing bar 4 and concrete is later used. There is a problem that it is necessary to hold the locking ridges 3 embedded in the metal plate 5 with a holding material 5 such as a plate material, and the preparation work before placing the concrete is troublesome and takes time and effort.

  In the flexible rubber joint 6 of Patent Document 2, as shown in FIG. 13B, the anchor bolt 9 and the reinforcing bar 4 are welded via the joint 10 with the anchor bolt 9 attached to the flange portion 8. At the same time, the angle holding member 11 is attached to the outside of the pair of flange portions 8 so that the angle can be maintained. In this case as well, preparation work before placing the concrete is difficult, and there is a problem that it takes time and effort. .

  The present invention has been made in view of the problems of the prior art, and can flexibly perform a preparatory work before placing concrete in a short time in the case of constructing a structure by casting concrete. It is an object of the present invention to provide a waterproof joint and a construction method thereof.

In order to solve the above-mentioned problem, a flexible water-stopping joint according to claim 1 of the present invention is provided at a joint portion of a concrete structure constructed by passing over preceding and following concrete, A flexible water-stopping joint that enables relative displacement of the joint portion, and a leading placement fixing portion and a trailing placement fixing portion that are embedded and fixed in the preceding and following concrete structures by placement, and An expansion / contraction part provided between the preceding casting fixing part and the subsequent casting fixing part and capable of water stopping and relative displacement, and the flexible water sealing joint provided integrally or separately and preceded. A support member capable of supporting the flexible waterproof joint by fixing the preceding placement fixing portion which is attached with a bolt from the outside of the bolt hole formed in the concrete mold for concrete placement, and is fixed before the concrete placement ; It is characterized by comprising It is intended.

According to this flexible water-stopping joint, it is provided in a joint part of a concrete structure that is constructed by passing over preceding and succeeding concrete, and is capable of allowing internal and external water-stopping and relative displacement of the joint part. A water-stopping joint, a preceding casting fixing portion and a trailing casting fixing portion that are embedded and fixed to the preceding and following concrete structures by casting, and the preceding casting fixing portion and the following casting fixing. forming a stretchable portion to enable waterproofing and relative displacement is provided, wife formwork concrete設用preceded to pouring provided in the flexible waterproofing joint integrally or separately between parts A support member capable of supporting the flexible water-stopping joint by fixing the preceding placement fixing portion which is attached with a bolt from the outside of the bolt hole and before the concrete placement , and is formed on the end form Installing a bolt from the outside of the bolt holes It is only necessary to support the preceding placing fixing portion via the supporting member and to place the preceding concrete, and the bolt hole for attaching the supporting member is processed into the wife formwork, and before the wife formwork is installed, the supporting member and A flexible waterproof joint can be attached, and the flexible waterproof joint can be attached even if it is not at the construction position. And it becomes possible to construct using a normal wife formwork without requiring a special wife formwork.

  Furthermore, the flexible waterproof joint according to claim 2 of the present invention is characterized in that, in addition to the configuration according to claim 1, the support member is configured to be embedded in the concrete structure. .

  According to this flexible waterproof joint, the supporting member is configured to be embedded in the concrete structure, and after placing the preceding concrete, the end form is removed and the supporting member is left as it is. Construction can be performed and construction can be further facilitated.

  According to a third aspect of the present invention, in addition to the structure of the first or second aspect, the flexible waterproof joint includes a joint material disposed in place of the end formwork. It is.

  According to the flexible waterproof joint, the joint material is provided in place of the end formwork, and after placing the preceding concrete, the joint form material is removed and the joint material is provided, so that You will be able to cast line concrete.

  Furthermore, in the flexible waterproof joint according to claim 4 of the present invention, in addition to the structure according to claim 1 or 2, the support member is configured continuously corresponding to the shape of the joint portion. It is characterized by.

  According to this flexible waterproof joint, the support member is configured continuously corresponding to the shape of the joint portion, and not only supports the flexible waterproof joint before placing concrete, but also the usage state. It also functions as a reinforcing material against the external force applied in step S1, and can be dispersed so that the external force does not become non-uniform.

  Moreover, in addition to the structure in any one of Claims 1-4, the said support member is arrange | positioned at intervals along the said joint part. It is characterized by.

  According to this flexible water-stopping joint, the support member is disposed with a gap along the joint portion, and a female screw that is provided integrally with the flexible water-stopping joint, for example, is formed. If it is a member, it can be easily fixed with bolts or the like.

  Furthermore, in the flexible waterproof joint according to claim 6 of the present invention, in addition to the structure according to any one of claims 1 to 5, the stretchable part is configured in a U-shaped or L-shaped cross section. It is characterized by this.

  According to this flexible waterproof joint, the expansion / contraction part is configured to have a U-shaped or L-shaped cross section, so that a sufficient expansion / contraction allowance can be secured to absorb the displacement.

Moreover, in addition to the structure in any one of Claims 1-5 , the flexible waterproof joint of Claim 7 of this invention is the opening part while the said expansion-contraction part is comprised in cross-sectional U shape. It is characterized in that it is configured by closing with a lid member that can be cut.

According to this flexible waterproof joint, the expansion / contraction part is configured to have a U-shaped cross-section, and the opening is configured to be closed with a lid member that can be cut, and is formed into a closed hollow shape. While preventing the intrusion of water and concrete during construction, it is possible to cope by cutting against large displacements.

Furthermore, the construction method of the flexible water-stop joint according to claim 8 of the present invention is provided in the joint portion of the concrete structure constructed by passing over the preceding and succeeding concrete, and the water seal inside and outside, and the joint. When constructing a flexible waterproof joint that allows relative displacement of the part, the flexible waterproof joint having a preceding placement fixing part that is embedded and fixed to the preceding concrete structure by placing is attached to the end frame. After supporting by fixing the preceding placement fixing part through a support member attached with a bolt from the outside of the formed bolt hole, placing the preceding concrete, and then removing the end form and removing the preceding formwork The following casting fixing part connected to the casting fixing part via the expansion / contraction part is fixed by laying and fixing the following concrete.

According to the construction method of this flexible waterproof joint, it is provided in the joint part of the concrete structure constructed by piercing the preceding and succeeding concrete, and the inner and outer waterproofing and the relative displacement of the joint part are possible. When constructing the flexible water-stopping joint, the flexible water-stopping joint having the preceding casting fixing portion embedded and fixed to the preceding concrete structure by casting is formed from the outside of the bolt hole formed in the end form frame. After supporting by fixing the preceding placement fixing part via a supporting member attached with a bolt , the preceding concrete is placed, and then the telescopic part is removed by removing the end formwork. The subsequent casting fixed portion connected through the bolt is fixed by burying the subsequent concrete, and through a support member attached with a bolt from the outside of the bolt hole formed in the wife formwork. The leading placement fixing part It is only necessary to support and place prior concrete. Bolt holes for attaching the support member are processed into the wife formwork, and the support member and flexible waterproof joint can be attached before installing the wife formwork. The stiffening water joint can be attached even if it is not at the construction position. And it can be constructed using a normal wife formwork without the need for a special wife formwork, and the construction can be further facilitated by leaving the supporting member embedded in the preceding concrete. Become.

  Moreover, in addition to the structure of Claim 8, the construction method of the flexible waterproof joint of Claim 9 of this invention was made to embed the supporting member attached to the said end formwork in a concrete structure. It is characterized by.

  According to this flexible waterproof joint construction method, the support member attached to the end formwork is embedded in the concrete structure, and after placing the preceding concrete, the end formwork is removed and the support member is removed. It is possible to construct the following concrete by leaving it as it is, and the construction can be further facilitated.

  Furthermore, in the construction method of the flexible waterproof joint according to claim 10 of the present invention, in addition to the configuration according to claim 8 or 9, after removing the end formwork, the joint material is adhered, and the concrete is succeeding It is characterized by the fact that it is arranged.

  According to the construction method of this flexible waterproof joint, after removing the end formwork, the joint material is bonded and the subsequent concrete is placed. By removing the joint and adhering the joint material, it becomes possible to quickly place the following concrete.

  Moreover, in addition to the structure in any one of Claims 8-10, the construction method of the flexible water-stop joint of Claim 11 of this invention arrange | positions the said supporting member continuously along the said joint part. The flexible waterproof joint is supported.

  According to the construction method of the flexible waterproof joint, the support member is continuously arranged along the joint portion so as to support the flexible waterproof joint. It functions as a reinforcing material not only for supporting the water stop joint but also for external force applied in use, and can be dispersed so that the external force does not become uneven.

According to the flexible waterproof joint according to claim 1 of the present invention, it is provided in the joint portion of the concrete structure constructed by piercing the preceding and succeeding concrete, and the water seal inside and outside and relative to the joint portion. A flexible water-stopping joint that enables displacement, a preceding placement fixing portion and a following placement fixing portion that are embedded and fixed to the preceding and following concrete structures by placement, and these preceding placement fixing An expansion / contraction part provided between the upper part and the subsequent casting fixing part and capable of water stopping and relative displacement, and a concrete placing provided integrally with or separately from the flexible water sealing joint. A support member capable of supporting the flexible waterproof joint by fixing the preceding placement fixing portion which is attached with a bolt from the outside of the bolt hole formed in the wife formwork for the concrete and before the concrete placement. since the, Bol was formed in the wife formwork May be pouring the preceding concrete supports the preceding hitting set fixing part via a supporting member mounted from the outside of the hole with a bolt, a bolt hole for attaching the support member in advance by processing the wife formwork, Wife formwork The support member and the flexible waterproof joint can be attached before the installation of the flexible waterproof joint even if it is not at the construction position. And it can construct using a normal wife formwork, without requiring a special wife formwork.

  Further, according to the flexible waterproof joint according to claim 2 of the present invention, the support member is configured to be embedded in the concrete structure. Subsequent concrete can be constructed while leaving the supporting member as it is, and the construction becomes easier.

  Moreover, according to the water-tight joint according to claim 3 of the present invention, since the joint material is provided in place of the end formwork, the end formwork is removed after placing the preceding concrete. By providing the joint material, it is possible to quickly place the following concrete.

  Furthermore, according to the flexible waterproof joint according to claim 4 of the present invention, since the support member is continuously configured corresponding to the shape of the joint portion, the flexible stop before the concrete is placed. In addition to supporting the water joint, it can function as a reinforcing material against an external force applied in use, and can be dispersed so that the external force does not become uneven.

  According to the flexible waterproof joint according to claim 5 of the present invention, since the support member is arranged at intervals along the joint portion, the support member is, for example, a flexible waterproof joint. If it is a member in which a female screw provided integrally with is formed, it can be easily fixed with a bolt or the like.

  Further, according to the flexible waterproof joint according to claim 6 of the present invention, since the expansion / contraction part is formed in a U-shaped or L-shaped cross section, a sufficient expansion allowance is secured to absorb the displacement. Can be made.

According to the flexible waterproof joint of claim 7 of the present invention, the expansion / contraction part is configured to have a U-shaped cross section, and the opening is closed by a severable lid member. Therefore, by making it a closed hollow shape, it is possible to prevent water and concrete from entering during construction, and by cutting a large displacement, the displacement can be absorbed correspondingly.

Furthermore, according to the construction method of the flexible waterproof joint according to claim 8 of the present invention, it is provided at the joint portion of the concrete structure constructed by passing over the preceding and succeeding concrete, When constructing a flexible water-stopping joint that enables relative displacement of the joint portion, the flexible water-stopping joint having a leading placement fixing portion that is embedded and fixed to a preceding concrete structure by casting is used as a wife type. After supporting by fixing the preceding placement fixing part through a support member attached with a bolt from the outside of the bolt hole formed in the frame, placing the preceding concrete, and then removing the wife mold Since the succeeding casting fixing portion connected to the preceding casting fixing portion via the expansion / contraction portion is placed and fixed by placing the following concrete, the outer side of the bolt hole formed in the wife formwork Branch was bolted from It is only necessary to support the preceding placement fixing part through the member and to place the preceding concrete. If the bolt hole for attaching the supporting member is processed into the wife formwork, the support member and the allowable member can be installed before the wife formwork is installed. A stiff water joint can be attached, and the flexible water joint can be attached in a place with a space even if it is not a construction position. As a result, it is possible to perform construction using normal wife formwork without the need for special wife formwork, and to make construction easier by leaving the supporting member embedded in the preceding concrete. Can do.

  Moreover, according to the construction method of the flexible waterproof joint according to claim 9 of the present invention, since the supporting member attached to the end frame is embedded in the concrete structure, By removing the wife formwork and leaving the supporting member as it is, it is possible to construct the following concrete, which can further facilitate the construction.

  Furthermore, according to the construction method of the flexible waterproof joint according to claim 10 of the present invention, after removing the end formwork, the joint material is adhered and the subsequent concrete is placed. After the preceding concrete is placed, the concrete can be quickly placed by removing the end formwork and bonding the joint material.

  According to the construction method of the flexible waterproof joint according to claim 11 of the present invention, the support member is continuously disposed along the joint portion to support the flexible waterproof joint. So, it can function as a reinforcing material not only for supporting the flexible waterproof joint before placing concrete, but also for external force applied in use, and can be dispersed so that the external force does not become uneven, Durability can also be improved.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 to 3 relate to an embodiment of the flexible water-stop joint of the present invention, FIG. 1 is a schematic perspective view of a concrete structure to which the flexible water-stop joint of the present invention is applied, and FIG. FIG. 3 is a partial cross-sectional view of a flexible water-stopping joint, and a partial cross-sectional view when displaced in the mounting state. FIGS. 4 and 5 show the present invention. FIG. 4 is an explanatory diagram of the first step of construction and a schematic perspective view of the support member, and FIG. 5 is an explanatory diagram of the second and subsequent steps.

  The flexible water-stop joint 20 can stop the joint portions 14 of the concrete structures 12 and 13 constructed by passing over the concrete, and can relatively displace the concrete structures 12 and 13 on both sides of the joint portion 14. It is what.

  A joint groove, which is an example of a concrete structure, is formed by connecting boxes 12 and 13 having a rectangular cross-sectional shape and a predetermined length by a joint portion 14. Thus, it is constructed by connecting the joint portion 14 every predetermined length (every box), and after completion, it is buried in the ground at a predetermined depth.

  The flexible waterproof joint 20 provided in the joint portion 14 of such a concrete structure 12, 13 includes a preceding placement fixing portion 21 and a subsequent placement fixing portion 22. It is configured to include water expansion and contraction part 23 that allows relative displacement by expanding and contracting with the line fixing part 22, and is integrated in the cross-sectional direction by a flexible material such as rubber or synthetic resin. In the longitudinal direction, the divided parts are formed into an annular shape or the like at the factory or on site in accordance with the shape of the joint portion 14.

  The leading casting fixing portion 21 and the trailing casting fixing portion 22 of the flexible water-stopping joint 20 are respectively connected to the preceding concrete structure 12 to be cast first and the trailing concrete structure 13 to be cast later. It is designed to be buried and fixed by placing, so that the embedding fixing strength can be increased.

  The leading placement fixing portion 21 of the flexible water-stopping joint 20 is formed, for example, in a substantially wedge shape so as to be orthogonal to the joint portion 14, and has a narrow trapezoidal shape in the front in the cross section, and the base end portion center. A support groove 21a is formed on the inner surface of the joint portion 14 of the groove 21a. The end surface 21b of the groove 21a is cut off to make contact with the concrete, thereby securing an embedded fixing strength, and extending and contracting to the outer side 21c of the joint portion 14 of the groove 21a. The part 23 is continuous.

  In addition, the preceding placement fixing portion 21 is provided with a butyl sheet 21d on the trapezoidal inner side surface, and is adhered by its adhesive force, so that the waterstop between the concrete structure 12 and the preceding placement fixing portion 21 is achieved. Is to ensure.

  On the other hand, the downstream of the flexible water-stopping joint 20 that is integrally formed through the preceding placement fixing portion 21 and the expansion / contraction portion 23 and is embedded and fixed by placement of the subsequent concrete structure 13 to be placed later. The casting fixing portion 22 has a protrusion 22a that increases the fixing strength and increases the pulling strength at the time of elongation deformation. For example, in the flexible waterproof joint 20, the outer peripheral portion and the joint portion of the concrete structure 13 are provided. 14 includes a side seal portion 22b and an end surface fixing portion 22c that are formed in an L shape in cross section applied to the end surface 14a (also the end surface of the concrete structure 13). A protruding portion 22a that protrudes and has a circular cross section is formed.

  The protrusion 22a is formed with air vent holes 22d penetrating in the axial direction of the joint portion 14 in order to vent air when the concrete is placed. For example, holes having a diameter of about 20 mm are formed at a predetermined pitch.

  Further, a butyl sheet 22e is provided on the inner side of the side seal portion 22b, and is adhered to the side seal portion 22b with the adhesive force in the subsequent placement fixing portion 22, and is placed on the concrete structure 13 and the subsequent placement. The water stoppage between the fixing part 22 is ensured.

  Further, on the outer side of the side seal portion 22b of the subsequent casting fixing portion 22, a protrusion 22f is formed, which improves the adhesion with a waterproof sheet 28 that covers the joint portion 14 to be described later, and has a water-stopping property. It can be improved.

  The stretchable portion 23 of the flexible water-stopping joint 20 provided between the preceding placement fixing portion 21 and the subsequent placement fixing portion 22 is a joint that continues outside the groove 21 a of the preceding placement fixing portion 21. The vertical portion 23a and the joint parallel portion 23b continuous with the inner end of the end face fixing portion 22c of the subsequent casting fixing portion 22 are integrally formed in an L shape in cross section.

  The construction method to the joint part 14 of the concrete structures 12 and 13 of the flexible waterproof joint 20 comprised in this way is demonstrated with FIG. 4 and FIG.

  In this flexible waterproof joint 20, a support member 24 is used to support the flexible waterproof joint 20 using the end form frame 16 assembled to form the end face 14 a of the joint portion 14, and the conventional reinforcing bars Compared to the case where it is supported and fixed, the concrete can be prepared for placing in a short time.

  As shown in FIG. 4B, the support member 24 includes a support plate portion 24a in which the groove 21a of the preceding placement fixing portion 21 is mounted and a fixing plate portion 24b protruding perpendicularly to the support plate portion 24a. It is arranged in an L shape to form a weld structure of a stainless metal plate, and has a shape corresponding to the shape of the joint portion 14.

  Therefore, as shown in FIG. 1, the support member 24 corresponds to the joint portion 14 having a rectangular ring shape. For example, the support member 24 is divided into a rectangular ring shape. A continuous material is used.

  The fixing plate portion 24b of the support member 24 is formed with fixing holes 24c for fixing at a predetermined pitch, and the notch portions 24d are provided so that both sides of the fixing plate portion 24b can be filled with concrete. Each is formed between the attachment holes 24c.

  Further, the support member 24 is provided with a fixed plate portion 24b at a predetermined position from the end form frame 16 so that the preceding placement fixing portion 21 is embedded at a predetermined depth from the end surface 14a of the joint portion 14. A holding member 24e is used.

  As shown in FIG. 4C, the spacing member 24e is configured by attaching a screw pipe 24g made of metal having a female thread formed at the center of the cylindrical portion 24f. The cylindrical portion 24f is made of, for example, concrete. It is made and it is made to embed and integrate in the concrete structure 12.

  In addition, a bolt hole corresponding to the mounting hole 24 c of the support member 24 is formed in advance in the end frame 16 that forms the end surface 14 a of the joint portion 14.

  In the construction of the flexible waterproof joint 20 using the support member 24 as described above, first, the mold is leveled and assembled on the concrete 15 in order to construct the preceding concrete structure 12 on which the concrete is first placed.

  In parallel with this, the interval holding member 24e is attached to the end form frame 16 forming the end face 14a of the joint portion 14 with bolts from the outside of the end form frame 16, and the support member 24 is provided outside the interval hold member 24e. The fixing plate portion 24b is applied, and the fixing plate portion 24b is attached with bolts from the attachment holes 24c (see FIG. 4A).

  Thereafter, the groove portion 21a of the preceding placement fixing portion 21 of the flexible waterproof joint 20 is attached to the support plate portion 24a of the support member 24 so that the end surface 21b on the inner side of the groove portion 21a contacts the fixing plate portion 24b. . When the flexible waterproof joint 20 is attached, the joint material 25 is disposed on the joint part 14 side of the support plate part 24a, and attached to the joint vertical part 23a of the expansion / contraction part 23 of the flexible waterproof joint 20 with an adhesive. The joint material 26 is also disposed on the preceding concrete placement side of the joint parallel part 23b of the expansion / contraction part 23 and attached with an adhesive (see FIG. 5A).

  Thereby, the displacement followability in the case where elongation deformation occurs in the flexible waterproof joint 20 can be improved by the joint materials 25 and 26.

  The attachment of the support member 24 and the flexible waterproof joint 20 to the wife mold 16 may not be performed at the site where the wife mold 16 is installed. The work is moved to a position where the work is easy at the installation site, and after the flexible waterproof joint 20 is attached, the wife formwork 16 is installed at a predetermined position.

  As a result, the supporting member 24 is attached to the end form frame 16 with bolts, compared to the conventional preparatory work such as suspending the prior placement fixing portion embedded in the reinforcing bar before placing the prior concrete. It is only necessary to attach the flexible water-stop member 20 to the support member 24, and preparation work can be performed easily and in a short time.

  After installing the preceding concrete casting form with the flexible waterproof joint 20 attached thereto, the preceding concrete is placed (see FIG. 5B).

  Then, after curing, the mold is removed, a joint material 27 such as rubber or sponge is placed in place of the end mold 14 of the end surface 14a of the joint part 14, and the joint of the expansion / contraction part 23 of the flexible waterproof joint 20 is provided. Adhere to the parallel part 23b.

  This joint material 27 is intended to reduce deformation resistance and prevent damage during compression deformation of the flexible waterproof joint 20.

  After that, after assembling the formwork necessary for the construction of the subsequent concrete structure 13, the subsequent concrete is placed. At the time of placing the concrete, air may accumulate inside the protrusion 22a of the subsequent placing fixing portion 22, so an air vent hole 22d is provided as necessary.

  Then, after curing, removing the mold, the installation of the flexible waterproof joint 20 to the joint portion 14 is completed (see FIG. 5C).

  A waterproof sheet 28 is attached to the entire circumference of the joint portion 14, that is, the bottom, side, and top surface to prevent intrusion of rainwater or the like. After the connection of the joint portions 14 of the concrete structures 12 and 13 is completed, the waterproof sheet 28 is backfilled with earth and sand when it is used as an underground structure. At this time, earth and sand enter the joint portion 14. However, it is used to prevent the possibility of problems such as an external force being applied to the flexible waterproof joint 20.

  According to such a flexible waterproof joint 20 and its construction method, for example, when the relative displacement is performed so that the distance between the joint portions 14 of the concrete structures 12 and 13 is increased, as shown in FIG. The leading placement fixing portion 21 of the flexible waterproof joint 20 is bonded and fixed to the preceding concrete structure 12, and the subsequent casting fixing portion 22 is fixed to the following concrete structure 13 by casting. Thus, the joint vertical portion 23a of the expansion / contraction portion 23 is deformed from the rear, and the water stoppage can be maintained in a state in which relative displacement is allowed.

  Further, in this flexible waterproof joint 20 and its construction method, the flexible waterproof joint 20 is supported by the support member 24 in an annular embedded and fixed state that corresponds to the shape of the joint portion 14. When an external force is applied to the stiffening joint 20, the external force can be dispersed and supported by the support member 24, and local damage can be effectively prevented.

  Furthermore, according to such a flexible waterproof joint 20 and its construction method, the attachment of the flexible waterproof joint 20 to the preceding concrete structure 12 fixes the support member 24 to the end form frame 16 with bolts, What is necessary is just to insert and fix the groove part 21a to the support plate part 24a, and compared with the case where it prepares to hang to a reinforcing bar etc. before placing, preparation work can be reduced significantly and it can construct easily and in a short time. In addition, the work can be performed at a position where it is easy to work by moving a place or position where there is a space without performing the work at the installation position of the wife formwork 16.

  Further, for placing concrete, the end form 16 is removed by loosening the bolt from the spacing member 24e of the support member 24, and the joint material 27 is attached to the joint parallel part 23b of the expansion / contraction part 23 of the flexible waterproof joint 20. It can be carried out simply by holding it by partial bonding or the like, and preparations for placing the subsequent concrete can be performed in a short time.

  Furthermore, according to this flexible water-stop joint 20, the displacement part 23 can absorb a large displacement by arranging the joint vertical part 23a and the joint parallel part 23b in a substantially L shape. Since the vertical portion 23a can be made relatively short, the width from the preceding placement fixing portion 21 to the subsequent placement fixing portion 22 can be reduced, and interference with the reinforcement of the concrete structures 12 and 13 can be prevented. Can be prevented, and the degree of freedom of installation is improved.

  Next, another embodiment of the flexible waterproof joint and the construction method thereof according to the present invention will be described with reference to FIG. 6, but the same portions as those in the above-described embodiment are denoted by the same reference numerals and overlapped. Description is omitted.

  As shown in FIGS. 6 (a) and 6 (b), this flexible waterproof joint 30 is provided with a leading placement fixing portion 31 and a trailing placement fixing portion 32, and an expansion / contraction portion 33 between them. The shape of the stretchable portion 33 is the same as the flexible water-stop joint 20 described above in FIG.

  The leading placement fixing portion 31 of the flexible water-stopping joint 30 has the same outer shape as the flexible water-stopping joint 20 already described, but the groove 21a is omitted and the end face is formed inside the joint portion 14. 31b is formed, and the expansion-contraction part 33 continues to the outer side 31c.

  Further, in the subsequent casting fixing portion 32, a protruding portion 32a serving as an anchor portion to the concrete is provided not in an end portion of the side surface sealing portion 32b but in an intermediate portion.

  The expansion / contraction part 33 of the flexible waterproof joint 30 crosses between the joint vertical part 33a continuous with the outer side 31c of the preceding placement fixing part 31 and the joint parallel part 33b along the end surface of the subsequent concrete structure 13. A curved portion 33c having a U-shaped surface is provided, and a reinforcing material is embedded in the curved portion 33c, for example, a reinforcing cloth 33d.

  In addition, the other structure is the same as the flexible water-stop member 20 already demonstrated and its construction method.

  Further, as shown in FIG. 6B, the construction method is also supported by applying the inner surface of the outer side 31 c of the preceding placement fixing portion 31 without inserting the groove portion into the support plate portion 24 a of the support member 24. Other than the above, it can be constructed in the same manner as the already described flexible waterproof joint.

  According to such a flexible waterproof joint 30 and its construction method, the same effect as the flexible waterproof joint 20 described above is obtained, and the expansion / contraction part 33 is provided with the curved part 33c. As shown in (b), the deformation allowance can be increased, and a large relative displacement absorbing ability can be ensured. Further, even if the stretchable portion 33 is greatly deformed, the reinforcing cloth 33d for reinforcement is placed inside, so that the strength can be ensured and damage can be prevented.

  Next, still another embodiment of the flexible waterproof joint and the construction method thereof according to the present invention will be described with reference to FIG. 7, but the same symbols are used for the same parts as those of the first embodiment already described. Note that duplicate explanation is omitted.

  As shown in FIG. 7, the flexible water-stopping joint 40 includes a leading water-fixing portion 41 and a succeeding casting-fixing portion 42, and the flexible water-stopping already described in the configuration including the stretchable portion 43 therebetween. Although it is the same as the joint 20, it is the shape of the expansion-contraction part 43 and the support member 44 which supports this that differ greatly.

  The expansion / contraction part 43 of the flexible waterproof joint 40 is provided with a joint parallel part 43b along the end surface of the subsequent concrete structure 13 by omitting the joint vertical part continuous to the outer side 41c of the preceding placement fixing part 41. The width of the flexible waterproof joint 40 (the length from the leading end of the leading placement fixing portion 41 to the trailing end of the trailing placement fixing portion 42) is further reduced.

  As a result, the fixing plate portion 44b of the support member 44 is directly applied to the wife formwork and attached, and after the completion of construction, it is applied to the joint material 27 to be installed instead of the wife formwork. And the nut 44e with a cap is arrange | positioned in the preceding concrete side of the fixed board part 44b of the supporting member 44, and it can clamp | tighten with the volt | bolt from the outer side of a wife formwork, and the placed concrete does not enter into a nut. It is like that.

  Moreover, the anchor 44f comprised by the L-shaped rebar is attached to either or both of this nut 44e with a cap, and the fixed board part 44b by welding etc., and the embedding fixation strength to the concrete structure 12 is raised. It is made to be able to.

  In addition, the other structure is the same as the flexible water-stop member 20 already demonstrated and its construction method.

  In addition, as shown in FIG. 7, the construction method can be constructed in the same manner as in the case of the flexible waterproof joint 20 described above except that the arrangement of the fixing plate portion 44 b of the support member 44 is different.

  According to such a flexible waterproof joint 40 and its construction method, the same effect as that of the flexible waterproof joint 20 and its construction method described above can be obtained, and the joint vertical portion of the expansion / contraction part 43 is placed in advance. Since it is also used as the fixing portion 41 and omitted, the width of the flexible water-stop joint 40 can be further reduced, and it is easy to prevent the interference with the reinforcing reinforcing bar and to install it.

  Next, another embodiment of the flexible waterproof joint and the construction method thereof according to the present invention will be described with reference to FIG. 8, but the same parts as those in the above-described embodiment are denoted by the same reference numerals and overlapped. Description is omitted.

  As shown in FIGS. 8A, 8B, and 8C, the flexible waterproof joint 50 includes a leading placement fixing portion 51 and a trailing placement fixing portion 52, and an expansion / contraction portion 53 is provided therebetween. Although it is the same as the flexible waterproof joint 20 already demonstrated by the structure provided, it is the flexible waterproof joint that the support member 54 for the support to the shape of the prior placing fixing | fixed part 51 and a wife formwork is greatly different. This is a point integrated with 50.

  The leading placement fixing portion 51 of the flexible water-stopping joint 50 has a substantially trapezoidal trapezoidal portion 51a whose cross-sectional shape is wide at the tip, and a cross-sectional shape integrally formed at the tip of the trapezoidal portion 51a. It is composed of a substantially T-shaped plate-like portion 51b, embedded in the preceding concrete to be cast, and can be firmly fixed by the shape effect of the trapezoidal portion 51a and the T-shaped plate-like portion 51b. And the butyl sheet 51c is provided in the front end surface of the plate-shaped part 51b of the preceding placement fixing | fixed part 51, it adhere | attaches with the adhesive force, and the stop between the concrete structure 12 and the preceding placement fixing | fixed part 51 is carried out. The water is ensured.

  At the base end of the trapezoidal portion 51a of the prior placement fixing portion 51, a nut 54a constituting the support member 54 is previously attached at a predetermined pitch after processing such as extrusion molding of the flexible waterproof joint 50, and is integrated. is there.

  The telescopic portion 53 is continuous with the outer side 51d of the nut 54a attached to the trapezoidal portion 51a of the preceding placement fixing portion 51.

  Further, the follow-on casting fixing part 52 of the flexible water-stopping joint 50 has a projection part 52a having a substantially triangular cross-sectional shape serving as an anchor part to the concrete from the end part of the side seal part 52b to the end face fixing part 52c. Is provided at the tip of a parallel fixing portion 52d arranged in parallel with the head. And the butyl sheet 52e is adhere | attached with the adhesive force on the back surface of the parallel fixing part 52d and the projection part 52a of this subsequent casting fixing part 52, and the stop between the concrete structure 13 and the subsequent casting fixing part 52 is carried out. The water is ensured.

  The expansion / contraction part 53 of the flexible waterproof joint 50 is provided with a joint parallel part 53b along the end surface of the subsequent concrete structure 13 via an arcuate bending part 53a on the outer side 51d of the preceding placement fixing part 51. Configured.

In addition, the other structure is the same as the flexible water stop member 20 already demonstrated.
In addition, as shown in FIG. 8B, the construction method also supports the flexible waterproof joint 50 before placing by inserting a fixing bolt into the nut 54a of the support member 54 from the end form frame. The joint material 55 is applied in the same manner as the flexible waterproof joint 20 described above, except that the joint material 55 is attached to the outer peripheral portion of the end face fixing portion 52c between the trapezoidal portion 51a and the plate-like portion 51b. be able to.

  According to such a flexible water-stopping joint 50, the same effect as the flexible water-stopping joint 20 described above is obtained, and the nut 54a of the support member 54 is integrated with the flexible water-stopping joint 50 in advance at a factory or the like. Therefore, it is possible to make preparations before placing by simply fixing the bolts to the wife formwork with bolts at the site, and to make preparations before placing concrete on the site even easier.

  In addition, you may make it form an air vent hole as needed in the parallel fixing | fixed part 52d in which the protrusion part 52a is formed in the front-end | tip of the following casting fixing | fixed part 52. FIG.

  Next, another embodiment in which the flexible waterproof joint and the construction method of the present invention are applied to a waterproof board will be described with reference to FIG.

  In the flexible water-stopping joint 60 composed of this water-stopping plate, both ends are attached to the central portion of the wall as a concrete structure to stop the water. It is designed to be easily constructed without being supported by reinforcing bars such as reinforcing bars.

  The flexible waterproof joint 60 includes a preceding placement fixing portion 61 that is embedded and fixed to the preceding concrete by placement, a subsequent placement fixing portion 62 that is embedded and fixed to the following concrete, and a space between them. And the hollow stretchable part 63 is arranged on a substantially straight line protruding downward.

  In this flexible water-stopping joint 60, the leading casting fixing portion 61 and the trailing casting fixing portion 62 have the same shape, and two rows of locking ridges 61a and 62a protrude from both sides of the plate-like front and back. It is formed. Further, the leading portions of the leading placement fixing portion 61 and the trailing placement fixing portion 62 are formed with protruding portions in which through holes 61b and 62b penetrating vertically are formed.

  The expansion / contraction part 63 provided between the preceding placement fixing part 61 and the subsequent placement fixing part 62 includes a substantially U-shaped extension part main body 63a, and its upper end opening is thinner and larger than other parts. When a force is applied, the lid member 63b that can be cut is closed.

  A construction method for the joint portion 14 of the concrete structures 12 and 13 of the flexible waterproof joint 60 configured as described above will be described with reference to FIG.

  For the construction of the water stop plate which is such a flexible water stop joint 60, the already-described support member 24 is used as it is, and the spacing member 24e is attached to the end form frame 16 forming the end face 14a of the joint portion 14. The fixing plate 24b of the support member 24 is applied to the outside of the spacing member 24e, and the fixing plate 24b is attached with the bolt from the mounting hole 24c.

  Thereafter, the support plate portion 24a of the support member 24 supports the inner portion of the preceding placement fixing portion 61 of the flexible waterproof joint 60, and the subsequent placement fixing portion 62 is bent outward. So that it can be held by the wife formwork 16 so as to be sandwiched between the joint materials 64 and 65. In addition, a formwork necessary for the construction of the concrete structure 12 is assembled.

  As described above, the attachment of the support member 24 and the flexible waterproof joint 60 to the wife mold 16 may not be a site where the wife mold 16 is installed, and a place with a large space. The wife mold 16 is moved to a position where the work can be easily performed on the installation site, and after the flexible water-stopping joint 60 is attached, the wife mold 16 is installed at a predetermined position.

  As a result, the supporting member 24 is attached to the end form frame 16 with bolts, compared to the conventional preparatory work such as suspending the prior placement fixing portion embedded in the reinforcing bar before placing the prior concrete. It is only necessary to attach the flexible water blocking member 60 to the support member 24, and the preparation work can be performed easily and in a short time.

  In this way, after installing the preceding concrete casting form to which the flexible waterproof joint 60 is attached, the preceding concrete is placed.

  Then, after curing, the end form 14a of the end face 14a of the joint part 14 is removed, and the thickness of the end form frame 16 is substituted for the joint material 65 on the outer side (upper side in the drawing) of the joint part 14 of the stretchable part 63. And a joint material 67 is disposed on the inner side (lower side in the figure) and attached to the expansion / contraction part 63 of the flexible waterproof joint 60 (see FIG. 9C).

  These joint materials 66 and 67 are designed to reduce deformation resistance and prevent damage during compression deformation of the flexible waterproof joint 60.

  After that, after assembling the formwork necessary for the construction of the subsequent concrete structure 13, the subsequent concrete is placed.

  Then, after curing, the mold is removed to complete the installation of the flexible waterproof joint 60 to the joint portion 14.

  According to such a flexible waterproof joint 60 and its construction method, for example, when the relative displacement is performed so that the distance between the joint portions 14 of the concrete structures 12 and 13 is increased, and the displacement is small, the hollow expansion and contraction is performed. The portion 63 is allowed to be deformed as it is, and when the displacement is large, the lid member 63b of the hollow stretchable portion 63 is cut and can be greatly deformed and allowed.

  Moreover, according to such a flexible waterproof joint 60 and its construction method, the attachment of the flexible waterproof joint 60 to the preceding concrete structure 12 fixes the support member 24 to the end form frame 16 with bolts, It only needs to be mounted so that the prior placement fixing portion 61 is placed on the support plate portion 24a, and preparation work can be greatly reduced compared to the case of preparing to hang on a reinforcing bar or the like before placement, and the construction is simple and quick. In addition, the work can be performed at a position where it is easy to work by moving a place or position where there is a space, without performing the work at the installation position of the wife formwork 16.

  Further, for placing concrete, the end form 16 is removed by loosening the bolts from the spacing member 24e of the support member 24, and the joint materials 66 and 67 are partially bonded to the expansion and contraction portion 63 of the flexible waterproof joint 60. For example, it is possible to perform the preparation before placing the subsequent concrete in a short time.

  Next, another embodiment of the flexible waterproof joint and the construction method thereof according to the present invention will be described with reference to FIG. The same symbols are given to the same parts as in FIG.

  The flexible waterproof joint 60A is different from the flexible waterproof joint 60 in that the stretchable part 63 is configured in a U shape without a lid member.

  The other configuration is the same as the flexible water blocking member 60 described above.

  The construction method to the joint part 14 of the concrete structures 12 and 13 of the flexible waterproof joint 60A configured in this way will be described with reference to FIGS.

  In the construction of the water stop plate which is such a flexible water stop joint 60A, as in the case of the flexible water stop joint 60 described above, the support plate portion 24a of the support member 24 is preceded by the flexible water stop joint 60A. The inner portion of the fixing portion 61 is supported, and the trailing casting fixing portion 62 is bent and supported by the wire frame 16 with a wire, and sandwiched between the small joint material 64A and the large joint material 65 from both sides. It is made to be able to be pressed with the nigiri formwork 16. In addition, a formwork necessary for the construction of the concrete structure 12 is assembled.

  In this way, after installing the preceding concrete casting form with the flexible waterproof joint 60A attached thereto, the preceding concrete is placed.

  After the curing, the end frame 14a of the end portion 14a of the joint portion 14 is removed, and the U-shape of the stretchable portion 63 is replaced with the joint material 65 on the outside (upper side in the drawing) of the joint portion 14 of the stretchable portion 63. A joint material 65A is attached so as to fill the concave portion, and a joint material 66A is disposed in place of the end frame 16, and a joint material 67 is disposed on the inner side (downward in the drawing) of the flexible waterproof joint 60A. It adheres and attaches to the expansion-contraction part 63 (refer FIG.10 (c)).

  After that, after assembling the formwork necessary for the construction of the subsequent concrete structure 13, the subsequent concrete is placed.

  Then, after curing, removing the mold, the installation of the flexible waterproof joint 60A to the joint portion 14 is completed.

  Such a flexible waterproof joint 60 </ b> A and its construction method also have the same effects as the flexible waterproof joint 60 described above.

  In addition, as a construction method of the flexible waterproof joint 60A, as shown in FIG. 10 (d), a large joint material 65B that reaches the outer periphery of the joint so as to fill the U-shaped concave portion of the stretchable portion 63 as a state after construction. The concrete may be placed without a cavity.

  Next, an embodiment in which the flexible waterproof joint and the construction method of the present invention are applied to a waterproof board will be described with reference to FIG.

  In the flexible water-stopping joint 70 constituted by this water-stopping plate, both ends are attached to the central portion of the wall as the concrete structure to stop the water, like the flexible water-stopping joints 60 and 60A already described. Yes, it is common to the above embodiments in that the support member is used so that the support before placing the concrete is not supported by reinforcing bars such as reinforcing bars. After installation, the support member does not remain embedded in the concrete structure, but differs in that it is removed.

  The flexible waterproof joint 70 includes a preceding placement fixing portion 71 that is embedded and fixed to the preceding concrete by placement, a subsequent placement fixing portion 72 that is embedded and fixed to the following concrete, and a space between them. And a substantially U-shaped expansion / contraction part 73 disposed on the surface.

  In this flexible water-stopping joint 70, the leading placement fixing portion 71 and the trailing placement fixing portion 72 have the same shape, and the outer periphery of the joint portion 14 of the preceding and succeeding concrete structures 12 and 13 is V-shaped. The fixed plate portions 71a and 72a applied to the inclined surfaces 12a and 13a and the outer surface are substantially orthogonal to the fixed plate portions 71a and 72a, and the inner surfaces are substantially linear with respect to the inclined surfaces 12a and 13a. Plate-like anchor portions 71b and 72b are provided, and bulging portions 71c and 72c swelled on both outer sides are provided at the tip portions of the respective plate-like anchor portions 71b and 72b.

  A substantially U-shaped expansion / contraction portion 73 is disposed between the preceding placement fixing portion 71 and the subsequent placement fixing portion 72, and the preceding placement fixing portion 71 and the subsequent placement fixing portion 72 are arranged at the opening end. The inner end portions of the two are connected together and formed integrally.

  Moreover, in this flexible water-stop joint 70, the butyl sheet 74 is attached to the concrete structures 12 and 13 side of the fixing plate portions 71a and 72a of the preceding casting fixing portion 71 and the trailing casting fixing portion 72, respectively. The water-stopping property can be secured.

  The construction method to the joint part 14 of the concrete structures 12 and 13 of the flexible waterproof joint 70 comprised in this way is demonstrated with FIG.11 (b).

  For the construction of the water stop plate which is such a flexible water stop joint 70, the support plate portion 24a of the support member 24 which has already been described is omitted, and the end frame forming the end surface 14a of the joint portion 14 is used. The spacing member 24e is attached to 16 with bolts together with a holding plate 24h applied to the outside of the end form frame 16, and the fixing plate portion 24b of the support member 24 is applied to the outside of the spacing member 24e with bolts.

  Thereafter, the fixing plate portion 24b of the support member 24 is supported by covering the U-shaped valley portion of the expansion / contraction portion 73 of the flexible water-stop joint 70, and the trailing placement fixing portion 72 is extended / contracted. The holding and filling member 75 is attached to the outside of the fixed plate portion 71a of the preceding placement fixing portion 71 and the expansion / contraction portion 73 so as to support the fixed plate portion 71a. Assembling the formwork necessary for the construction of the concrete structure 12.

  As described above, the attachment of the support member 24 and the flexible waterproof joint 70 to the wife mold 16 may not be a site where the wife mold 16 is installed, and a place with a large space. The wife mold 16 is moved to a position where the work can be easily performed on the installation site, and after the flexible waterproof joint 70 is attached, the wife mold 16 is installed at a predetermined position.

  As a result, the supporting member 24 is attached to the end form frame 16 with bolts, compared to the conventional preparatory work such as suspending the prior placement fixing portion embedded in the reinforcing bar before placing the prior concrete. It is only necessary to attach the flexible water blocking member 70 to the support member 24, and preparation work can be performed easily and in a short time.

  In this way, after installing the preceding concrete casting form with the flexible waterproof joint 70 attached thereto, the preceding concrete is placed.

  Then, after curing, the end form 14a of the end surface 14a of the joint portion 14 is removed, and the support member 24 is also removed. Then, a joint material 76 having a thickness of the fixing plate portion 24b is disposed in the valley portion of the expansion / contraction portion 73 in place of the fixing plate portion 24b of the support member 24, and is attached to the concrete structure 12 by bonding (FIG. 11C). reference).

  These joint materials 76 reduce the deformation resistance and prevent damage when the flexible waterproof joint 70 is compressed.

  After filling the holding and filling member 75 between the fixing plate portion 72a and the expansion / contraction portion 73 of the subsequent casting fixing portion 72, and assembling the formwork necessary for the construction of the subsequent concrete structure 13 Lay the concrete behind.

  Then, after curing, removing the mold form completes the installation of the flexible waterproof joint 70 to the joint portion 14.

  According to such a flexible waterproof joint 70 and its construction method, for example, when the distance between the joint portions 14 of the concrete structures 12 and 13 is relatively displaced, the U-shaped stretchable portion 73 is allowed to be deformed. be able to.

  Moreover, according to such a flexible waterproof joint 70 and its construction method, the flexible waterproof joint 70 is attached to the preceding concrete structure 12 by fixing the support member 24 to the end frame 16 with bolts, It is only necessary to cover the fixing plate portion 24b with the expansion / contraction portion 73 and to fill and attach the holding and filling member 75 to the outside, and compared with the case of preparing to hang it on a reinforcing bar before placing, the preparation work can be greatly reduced, Construction can be performed easily and in a short time, and the work can be performed at a position where there is a space and a position where the work can be easily performed without performing the work at the installation position of the wife formwork 16.

  Further, the following concrete can be placed simply by removing the end form 16 and the support member 24 and holding the joint material 76 by partially adhering it to the preceding concrete structure 12. The preparation before placing can be done in a short time.

1 is a schematic perspective view of a concrete structure to which a flexible waterproof joint according to an embodiment of the present invention is applied. It is a cross-sectional view of the attachment state after construction of the flexible waterproof joint concerning one embodiment of the flexible waterproof joint of this invention. It is the partial cross-sectional view concerning one Embodiment of the flexible water-stop joint of this invention, and the partial cross-sectional view at the time of displacement in the attachment state. It is explanatory drawing of the 1st process of construction concerning one embodiment of the construction method of the flexible waterproof joint of this invention, and a schematic perspective view of a support member. It is explanatory drawing after the 2nd process concerning one Embodiment of the construction method of the flexible waterproof joint of this invention. It is each partial cross-sectional view concerning another one Embodiment of the flexible water-stop joint of this invention, and a partial cross-sectional view of a deformation | transformation state. It is a fragmentary cross-sectional view concerning another one Embodiment of the construction method of the flexible waterproof joint of this invention. It is the partial cross-sectional view concerning other one Embodiment of the flexible waterproofing joint of this invention, the partial cross-sectional view of a construction completion state, and the partial cross-sectional view of a deformation | transformation state. It is the partial cross-sectional view concerning another one embodiment of the flexible waterproof joint of this invention, the partial cross-sectional view in the middle of construction, and the partial cross-sectional view of a construction completion state. In the partial cross-sectional view concerning the other embodiment of the flexible waterproof joint of this invention, the partial cross-sectional view in the middle of construction, the partial cross-sectional view of the construction completion state, and the partial cross-sectional view of the other construction completion state is there. It is the partial cross section concerning one embodiment of the flexible waterproof joint of this invention, the partial cross section in the middle of construction, and the partial cross section of the construction completion state. It is explanatory drawing of the cross-sectional view of the conventional water stop board, and its construction method. It is a front view of the conventional flexible waterproof joint, and explanatory drawing of the construction method.

Explanation of symbols

DESCRIPTION OF SYMBOLS 12 Concrete structure 13 Concrete structure 14 Joint part 14a End surface 15 Leveling concrete 20 Flexible waterproof joint 21 Prior placement fixing part 21a Groove part 21b End surface 21c Outer 21d Butyl sheet 22 Subsequent placement fixing part 22a Protrusion part 22b Side surface Seal portion 22c End face fixing portion 22d Air vent hole 22e Butyl sheet 22f Convex strip 23 Stretching portion 23a Joint vertical portion 23b Joint parallel portion 24 Support member 24a Support plate portion 24b Fixing plate portion 24c Mounting hole 24d Notch portion 24e Space holding member 24f Cylindrical Portion 24g Threaded pipe 24h Presser plate 25 Joint material 26 Joint material 27 Joint material 28 Waterproof sheet 30 Flexible waterproof joint 31 Preliminary placement fixing portion 32 Subsequent placement fixing portion 33 Extending and contracting portion 40 Flexible waterproof joint 41 Advance impact Installation fixing part 42 Subsequent casting fixing part 43 Extension Portion 44 Support member 50 Flexible watertight joint 51 Preliminary placement fixing portion 52 Subsequent placement fixing portion 53 Stretching portion 54 Support member 60 Flexible waterstop joint 61 Preceding placement fixing portion 62 Subsequent placement fixing portion 63 Expansion and contraction Part 60A Flexible waterproof joint 70 Flexible waterproof joint 71 Preliminary placement fixing part 72 Subsequent placement fixing part 73 Stretching part 74 Butyl sheet 75 Holding and filling member 76 Joint material

Claims (11)

A flexible waterproof joint that is provided in a joint part of a concrete structure constructed by passing over preceding and succeeding concrete and that allows internal and external waterproofing and relative displacement of the joint part,
A preceding placement fixing portion and a subsequent placement fixing portion which are embedded and fixed to the preceding and following concrete structures by placement;
An expansion / contraction part that is provided between the preceding casting fixing part and the subsequent casting fixing part and that allows water stop and relative displacement,
Said preceding striking setting of concrete設前externally attached with bolts of the flexible waterproofing joint integrally or separately to provided prior to pouring the the concrete設用bolt hole formed in wife formwork A support member capable of fixing the fixing portion and supporting the flexible waterproof joint;
A flexible waterproof joint, comprising:   The flexible waterproof joint according to claim 1, wherein the support member is configured to be embedded in the concrete structure.   The flexible waterproof joint according to claim 1, further comprising a joint material disposed in place of the wife formwork.   The flexible water-stopping joint according to any one of claims 1 to 3, wherein the support member is formed continuously corresponding to the shape of the joint portion.   The flexible water-stopping joint according to any one of claims 1 to 3, wherein the support member is disposed along the joint portion with a space therebetween.   The flexible waterproof joint according to any one of claims 1 to 5, wherein the stretchable part is configured in a U-shaped or L-shaped cross section. The flexible member according to any one of claims 1 to 5, wherein the stretchable part is configured to have a U-shaped cross section and is configured to be closed by a lid member that can be cut. Water fittings. When constructing a flexible waterproof joint that is provided in a joint part of a concrete structure constructed by passing over preceding and succeeding concrete and that allows internal and external waterproofing and relative displacement of the joint part,
It said preceding the flexible waterproofing joint having a preceding punching setting fixed portion which is embedded and fixed by Da設the concrete structures of the prior, via a support member mounted with bolts from the outside of the bolt hole formed in wife formwork After supporting by fixing the casting fixing portion , the preceding concrete is cast, and then the casting mold is removed, and the subsequent casting fixing is connected to the preceding casting fixing portion via the expansion / contraction portion. A construction method for a flexible water-stopping joint, characterized in that the part is placed and fixed by laying a subsequent concrete.   9. The construction method for a flexible waterproof joint according to claim 8, wherein the support member attached to the end formwork is embedded in a concrete structure.   10. The construction method for a flexible waterproof joint according to claim 8, wherein after the wife formwork is removed, a joint material is adhered and a concrete is placed afterward. The flexible waterproof joint according to any one of claims 8 to 10, wherein the support member is continuously arranged along the joint portion to support the flexible waterproof joint. Construction method.

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