JP2015094196A - Joint part cut-off material for segment frame and joining method of segment frame using cut-off material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint part cut-off material for a segment frame that can solve the conventional problem in which additional man-hours are required for constructing cut-off materials and repairing damaged segment frames.SOLUTION: A cut-off material, which can be mounted on a frame mold 2 for manufacturing a segment frame A, includes a projection member 1a arranged on a concrete placing side in the frame mold 2 for forming the segment frame A. By arranging the projection member 1a so as to project out in the frame mold 2, the projection member 1a projects out toward the concrete placing side in the frame mold 2. After concrete 4 is placed inside the frame mold 2 and is hardened, the projection member 1a, which is one of two members constituting the cut-off material 1, is fixed in the concrete segment frame A without performing an additional cut-off material attaching process. Therefore, when joining the segment frames A, A to each other, the construction process of mounting the projection member 1a, as one of the two members of the cut-off material 1, can be eliminated.

Description

  The present invention relates to a water-stopping material for use in a connecting portion of a segment housing mainly made of concrete, and a method for connecting segment housings using the water-stopping material.

  In order to attach a water-stopping material to a connecting portion of a concrete segment housing, a groove for fixing the water-stopping material is provided in the concrete segment housing.

  There has also been proposed a method in which a water-resistant packing having elasticity is attached to a connecting portion of a concrete segment housing with an adhesive or a temporary fastener (see, for example, Patent Document 1).

Japanese Examined Patent Publication No. 6-8116 (refer to the publication, page 2, column 4, line 28 to column 5, line 1, FIG. 1, FIG. 6, FIG. 7, etc.).

  In the method of constructing a groove for fixing a water-stopping material to a concrete segment frame, not only this construction man-hour, but also the subsequent man-hours for mounting the water-stopping material are required, which has the disadvantage of increasing the overall construction man-hour. doing. Moreover, since the groove | channel is formed in the segment housing made from concrete, many cracks generate | occur | produce in a segment housing | casing because of this groove | channel, and many man-hours are needed for the repair.

  On the other hand, even in the case of Patent Document 1, since a large number of holes for inserting coupling members are formed in a concrete segment housing, many cracks are generated in the segment housing as in the above case, and a lot of man-hours are required for repairing the same. I need. Moreover, the man-hour for inserting a coupling member in each of many holes for insertion of a coupling member is required, and there exists a fault that the man-hour for attachment increases according to the number.

  The object of the present invention is to eliminate such drawbacks.

  In order to achieve the above object, the water stop material for a connecting portion of a segment housing according to the present invention can be installed in a formwork for manufacturing a segment housing, and is for forming the segment housing. It is composed of two members, a projecting member that can project to the side of placing the concrete in the mold and a coupling member that can be coupled to the projecting member.

  If the protruding member which is one of the two members of the water-stopping material according to the present invention is installed in the mold, one of the two members of the water-stopping material is placed on the side where the concrete in the mold is placed. When the concrete is placed in this formwork and hardened, it will not require a separate waterstop attachment process and the waterstop The protruding member, which is one of the two members, is in a fixed state.

  Therefore, in connecting the segment housings to each other, it is possible to reduce the construction process for installing the protruding member which is one of the two members of the water blocking material. Further, when the water-stopping material according to the present invention is used, a so-called non-separable mortar or other connecting material that does not separate in water can be used, and the connecting material can be cured while the segment housing remains in a water-filled state. Since it can do, it is very useful as a water stop material at the time of connecting a segment housing mutually. Furthermore, since the water-stopping material according to the present invention is composed of two members, the production of the mold is extremely simple.

  It is desirable that the two members constituting the water stop material are formed of rubber or other elastic bodies. When such a water-stopping material is used, when connecting the segment housings to each other, the connecting member, which is one of the two members of the water-stopping material made of an elastic body, can be compressed as appropriate, Since the gap can be finely adjusted, the connection strength between the segment housings can be skillfully and finely changed.

  On the other hand, the connecting method of the segment housings using the water-stopping material according to the present invention is a method for installing the projecting member, which is one of the two members of the water-stopping material, on the mold for manufacturing the segment housing. Concrete is placed in the mold in which the member is located, and a coupling member, which is another member of the water-stopping material, is coupled to the projecting member fixed to the segment housing after the mold is removed. Another segment housing is brought into contact with the coupling member, and thereafter, a connecting material is placed in a gap formed between the end surfaces of both segment housings.

  According to this connection method, in connecting the segment housings to each other, it is possible to reduce the construction process for installing the protruding member which is one of the two members of the water blocking material. In addition, using a so-called non-separable mortar or other connecting material that does not separate in water, the connecting material can be cured while the segment housing is in a water landing state. Furthermore, since it is not necessary to construct a groove for fixing the water stop material, the segment housing can be prevented from cracking.

  After the mold is removed from the mold, both segments are preferably temporarily connected by temporary connecting means. In such a case, since it is possible to reliably perform the subsequent construction of the connecting material, the segment housings can be reliably and firmly connected to each other.

  When the water-stopping material according to claim 1 is used, if a projecting member which is one of the two members of the water-stopping material is installed in the formwork, the concrete is placed in the formwork. When the concrete is placed in this formwork and hardened, the projecting member protrudes into the concrete segment housing without the need for a separate waterstop attachment process. The protruding member which is one of the two members is fixed. Therefore, in connecting the segment housings to each other, the construction process for installing the projecting member can be reduced.

  Further, when the water-stopping material according to claim 1 is used, a so-called non-separable mortar or other connecting material that does not separate in water is used, and the connecting material is cured while the segment housing is still in the water landing state. Therefore, it is extremely useful as a water stop material when connecting the segment housings to each other. Furthermore, since the water-stop material according to claim 1 is composed of two members, the production of the mold is extremely simple.

  When the waterstop material according to claim 2 is used, when connecting the segment housings to each other, the joining member, which is one of the two members of the waterstop material made of an elastic body, can be appropriately compressed, and both segment housing end faces Since it is possible to finely adjust the gap between them, the connection strength between the segment housings can be skillfully and finely changed.

  According to invention of Claim 3, in connecting a segment housing | casing mutually, the construction process which installs the protrusion member which is one of the two members of a water stop material can be reduced. In addition, using a so-called non-separable mortar or other connecting material that does not separate in water, the connecting material can be cured while the segment housing is in a water landing state. Furthermore, since it is not necessary to construct a groove for fixing the water stop material, the segment housing can be prevented from cracking.

  According to the fourth aspect of the present invention, since it is possible to reliably perform the subsequent construction of the connecting material, the segment housings can be reliably and firmly connected to each other.

It is sectional drawing which shows an example of the point which installs the water stop material for the connection parts of the segment housing by this invention in a mold in order of a process. It is sectional drawing which shows an example of the point which connects the segment housing | casing by this invention in order of a process.

  The form for implementing this invention is demonstrated in detail, referring FIG. 1, FIG. Hereinafter, an example of a water-stopping material that can be installed in a formwork for producing a concrete-made segment housing and an example of a method for connecting the segment housings using the water-stopping material will be described in detail.

  The water-stopping material 1 for the connecting portion of the segment casing according to the present invention can be installed in a mold 2 for manufacturing the segment casing, and is provided in the mold 2 to form the segment casing. The projection member 1a can be projected to the concrete placement side, and the coupling member 1b can be coupled to the projection member 1a.

  1 (a) to 1 (c), reference numeral 2 indicates a mold for manufacturing a concrete segment casing. In order to form the concrete segment casing, The projecting member 1a which is one of the two members of the water-stopping material 1 can be protruded on the concrete placing side (in the mold 2).

  For example, in FIG. 1A, a double-sided tape or other bonding material is attached to the part indicated by reference numeral 3 in the mold 2 and the protruding member 1a is attached to the mold as shown by the arrow in the figure. 1, the projecting member 1 a can be protruded to the side where the concrete in the mold 2 is placed (in the mold 2), as shown in FIG. As shown in FIG. 1 (c), when the concrete 4 is placed and hardened, two members of the water stop material 1 are attached to the concrete segment housing A without requiring a separate water stop material attaching step. The projecting member 1a which is one of the above is fixed. Therefore, when connecting the segment housing A and another segment housing A to each other, it is possible to reduce the construction process for installing the protruding member 1a.

  That is, when the mold 2 is removed from the mold, as shown in FIG. 1 (d), a concrete segment housing A to which the protruding member 1a, which is one of the two members of the water-stopping material 1, is fixed is manufactured. Can do.

  As shown in FIGS. 1A to 1D, the protruding member 1a is formed with a recessed fitting portion 1a ′, and the recessed fitting portion 1a ′ is another member of the water stop member 1. When the projection 1b ′ of the coupling member 1b is fitted, both can be coupled. That is, as shown in FIG. 1 (d), after the mold 2 is removed, it is coupled to the recessed fitting portion 1a ′ of the protruding member 1a fixed to the concrete segment housing A as shown by the arrow in FIG. When the projecting portion 1b ′ of the member 1b is fitted, both can be coupled, and the coupling member 1b, which is another member of the water blocking member 1, projects from the outer surface of the segment housing A after the mold is removed. Become.

  Therefore, another segment housing A is brought into contact with the connecting member 1b protruding from the segment housing A after demolding, as shown by the arrow in FIG. 2 (a), and then shown in FIG. 2 (b). In this way, the connecting material 6 is placed in the gap 5 formed between the end faces of both the segment housings A and A. Then, as shown in FIG. 2 (c), the two segment housings A and A can be connected to each other by the connecting material 6. As the connecting material 6, mortar and other bonding materials can be used.

  In this case, since the connecting member 1b which is one of the two members of the water blocking material 1 is disposed between the two segment housings A and A connected to each other, the two segments connected to each other are arranged. The water stop effect between the joint surfaces of the casings A and A is sufficiently maintained. In particular, by forming the coupling member 1b as illustrated here, not only can the cost of the entire water stop material be significantly reduced, but also the water stop performance can be greatly stabilized.

  Thus, when the water stop material 1 illustrated here is used, the protrusion member 1a can be made to protrude on the side (inside the mold 2) where the concrete in the mold 2 is placed. If concrete 4 is placed in 2 and hardened, a protruding member which is one of the two members of the water-stopping material 1 on the segment housing A made of concrete without requiring a separate water-stopping material attaching step. 1a is fixed. Therefore, in connecting the segment housings A and A to each other, it is possible to reduce the construction process for installing the protruding member 1a which is one of the two members of the water blocking material 1. In addition, since the so-called non-separable connection material 6 that does not separate in water can be used to cure the connection material 6 while the segment housings A and A remain in a water-filled state, the segment housings A and A are mutually connected. It is extremely useful as the water blocking material 1 when connecting.

  On the other hand, according to the connecting method of the segment casings exemplified here, when connecting the segment casings A and A, the construction process for installing the protruding member 1a which is one of the two members of the water-stopping material is reduced. be able to. Moreover, the so-called non-separable type connecting material 6 that does not separate in water can be used to cure the connecting material 6 while the segment housings A and A remain in the water landing state. Furthermore, since it is not necessary to construct a groove for fixing the water-stopping material, it is possible to prevent the segment casings A and A from cracking.

  Here, as the two members constituting the waterstop material 1, those formed from rubber or other elastic bodies are used. When such a water-stopping material 1 is used, the coupling member 1b, which is one of the two members of the water-stopping material 1 made of an elastic body, can be appropriately compressed when the segment housings A and A are connected to each other. Fine adjustment of the gap 5 between the end faces of the segment housings A and A is possible, so that the connection strength between the segment housings A and A can be skillfully and delicately changed.

  Further, after the mold 2 is removed from the mold, the two segment housings A and A can be temporarily connected by temporary connecting means such as bolts and nuts. The temporarily connected state is shown in FIG. Here, although illustration of the temporary connecting means is omitted, when the two segment housings A and A are temporarily connected by the temporary connecting means, the construction of the connecting material 6 performed thereafter can be reliably performed. The segment housings A and A can be reliably and firmly connected to each other.

  DESCRIPTION OF SYMBOLS 1 ... Water stop material, 1a ... Projection member, 1b ... Connection member, 2 ... Formwork, 4 ... Concrete, 5 ... Crevice, 6 ... Connection material, A ... Segment housing.

Claims (4)

  A water blocking material that can be installed in a mold for producing a segment casing, and a projecting member that can project to the side on which the concrete in the mold is placed in order to form the segment casing, A water-stopping material for a connecting portion of a segment housing, which is composed of two members of a connecting member that can be connected to a protruding member.   The water-stopping material for a connecting portion of a segment housing according to claim 1, wherein the two members constituting the water-stopping material are formed of rubber or another elastic body.   After installing the projecting member which is one member of the water stop material according to claim 1 in the formwork for manufacturing the segment housing, concrete is placed in the formwork where the projecting member is located. Then, a coupling member, which is another member of the water-stopping material, is coupled to the projecting member fixed to the segment casing after the mold is removed, and then another segment casing is brought into contact with the coupling member. The connecting method of the segment housing | casing using a water stop material characterized by constructing a connection material in the clearance gap formed between both segment housing | casing end surfaces.   4. The method for connecting segment housings using a waterstop material according to claim 3, wherein both segments are temporarily connected by temporary connecting means after the mold is removed.

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