JP2006009470A - Open channel regenerating member and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an open channel regenerating member for actualizing reliable and easy water stop even when the axis of one open channel regenerating member is somewhat shifted from that of the other or the regenerating member is expanded or twisted. <P>SOLUTION: A receiving part 5 of an elastic material and an insertion part 4 of an elastic material are provided on the longitudinal one-end outer peripheral face of the open channel regenerating member 2 and on the other-end outer peripheral face thereof, respectively, and a water stop packing 6 is mounted on the inner peripheral face of the receiving part 5 or on the outer peripheral face of the insertion part 4. During regenerating a plurality of open channels 1 when the open channel regenerating members 2 are arranged with the opposed ends 21, 22 approximately contacting each other, the receiving part 5 and the insertion part 4 are fitted to each other via the water stop packing 6. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention provides a groove-shaped opening made of fiber reinforced rigid foamed urethane resin of unit length, which is used when newly establishing various open channels such as agricultural waterways, drainage channels, and side ditches, or when rehabilitating aging existing open channels. The present invention relates to a waterway rehabilitation member and an open waterway rehabilitation method.

  Conventionally, for example, as a method of repairing and rehabilitating the inner surface of an existing open channel such as aging concrete agricultural water, the defective portion of the existing concrete on the inner surface of the open channel is removed, and concrete is re-launched on the removed portion. The so-called concrete replacement method is generally used. This construction method requires work such as shaving off a defective portion of existing concrete, carrying it out, and driving in new concrete, resulting in a longer construction period.

  For this reason, for example, a projecting edge extending in the radial direction is integrally formed on each of the opening end surface and the axial end surface along the axis of the bowl-shaped body, and a fastening member insertion hole is formed on the projecting edge of the axial end surface. There is known a water channel constituent member that is provided and has an anchor portion attachment portion provided on both side portions of the bowl-like body (see, for example, Patent Document 1).

In the water channel construction method using this water channel component (corresponding to the open channel rehabilitation member referred to in the present invention), the water channel configured in the water channel is the protruding edge of the axial end surface of each water channel component. It is constructed in the existing water channel by abutting and fixing with a fastening member such as a bolt and nut.
JP, 5-44244, A Claim 1 paragraph number [0009]

  In the construction method of the above-mentioned document 1, the end surfaces in the axial direction of the arranged waterway constituent members are butted together. In this case, although not described, normally, the sealing material is interposed between the butt surfaces, and the water is stopped by inserting a sealing material or by inserting a waterproof rubber or the like. In addition, in the construction work site, since the arrangement positions of the individual waterway components are finely adjusted according to the unevenness of the existing waterways, the accuracy of filling the joints is partially different, and the water stop work is configured. It is a normal work to be performed individually in accordance with the positional relationship between the end faces that are abutted at the work site.

  Therefore, in the waterway construction method of the above-mentioned document 1, the waterstop work between the waterway constituent members is complicated, and the water stoppage at the line location varies depending on the skill of the operator, and there is a risk of water leakage from this part, which is reliable. There was a problem that it took time and effort to line up.

  The present invention solves the above-mentioned conventional problems, and when the open channel renewal members are arranged to rehabilitate the open water channel, even if the respective axes of the open water channel renewal members arranged are slightly deviated or rehabilitated. The present invention was made for the purpose of providing an open channel rehabilitation member that can reliably and easily stop water and a rehabilitation method using the same even when the member is stretched or twisted.

  The open channel rehabilitation member according to claim 1 of the present invention (invention 1) for solving the above-mentioned problems is used for rehabilitating a new open channel by sequentially arranging along the flow direction on the inner surface of the existing open channel. A groove-shaped open channel renewal member having a unit length, wherein a receiving portion made of an elastic material is provided on the outer peripheral surface of one end in the longitudinal direction of the open channel renewal member, and the outer peripheral surface of the other end is formed of an elastic material. When the water stop packing is mounted on the inner peripheral surface of the receiving portion or the outer peripheral surface of the insertion portion, and when a plurality of open channel renovation members are sequentially arranged, the facing ends of each open channel renewal member are Are arranged so as to be substantially in contact with each other, the receiving portion and the insertion portion are fitted through a water-stop packing.

  The open channel rehabilitation member according to claim 2 (invention 2) is a groove-shaped open channel renewal member of the unit length of invention 1 made of fiber-reinforced rigid foamed urethane resin, and the receiving portion and the insertion portion made of an elastic body are provided. Both are arranged with an interval from the outer peripheral surface of the open channel renovation member, and from the edge of the groove-shaped opening of the open channel renewal member to the outer peripheral surface of the insertion elastic member or the inner peripheral surface of the receiving elastic member When the water-stopping packing is mounted across the edge and a plurality of the above-mentioned open channel renewal members are arranged, the insertion portion and the receiving portion are caused by the elasticity of the elastic material of the insertion portion and the receiving portion or the elasticity of the water-stopping packing. Are closely connected to each other, and the lined portion is water-stopped.

  The open channel rehabilitation method according to claim 3 (invention 3) is an arrangement in which the open channel renovation members of a plurality of inventions 1 are arranged in a predetermined position so that each insertion portion and the receiving portion face each other. Insert the insertion part of the open channel renovation member arranged in the process into the receiving part of the open channel renovation member that is connected to it, connect the open channel renovation members to each other via the water stop packing, Water stop connection step for stopping and connecting the lined portion of the open channel renewal member by elasticity of each elastic material or water stop packing, and a fixing step for fixing the line of the open channel renewal member arranged in place And, if necessary, following the water stop connection step, the open channel renewal member is provided with a gap on the outer peripheral surface thereof, fixed at a predetermined position, and a reinforced fixing step of placing mortar in the gap. It is characterized by that.

  Since the material of the open channel rehabilitation member functions as a water channel, strength, water corrosion resistance, and preferably weather resistance are required. For this purpose, for example, metals such as stainless steel, corrosion-resistant iron, and aluminum; synthetic resins such as polyvinyl chloride, polyethylene, polypropylene, polycarbonate, polyester, epoxy resin, urethane resin; and sand and calcium carbonate And the like; fiber reinforced resins obtained by reinforcing these fibers; natural materials such as wood; and inorganic materials such as precast concrete. Among these, the glass fiber reinforced rigid foamed urethane resin is particularly suitable because it is small in weight and excellent in strength and water resistance, and also has good corrosion resistance and weather resistance.

  The elastic material used for the insertion portion or the receiving portion preferably has a certain degree of rigidity and functions as a leaf spring. Thus, for example, examples include metals such as steel and stainless steel; synthetic resins such as polyvinyl chloride, polyethylene, polypropylene, polycarbonate, polyester, epoxy resin, and urethane resin; and fiber reinforced resins obtained by reinforcing these fibers. .

  The elastic material of the insertion portion or the receiving portion is formed by bending a band-shaped metal plate into a substantially crank shape in the length direction, and floating one side of the bent side from the outer surface of the open channel renewal member, and the tip of the side is The surface of the other side is fixed in the direction perpendicular to the axial direction along the outer peripheral surface edge of the open channel renovation member so as to protrude from the end surface of the open channel renovation member. The elastic material corresponding to the corners of the groove shape may be subjected to a normal bending process so that the gap at the bent portion is the same as the gap at other places corresponding to the bending.

  Since both the insertion part and the receiving part have a crank shape, a gap is formed between the projecting side of the crank shape and the outer surface of the open channel renewal member. The gap between the insertion part and the outer surface of the open channel renovation member is bent, twisted, pulled or pushed in by an external force acting on the insertion part after the insertion part is inserted and connected to the receiving part. Even if the elastic material is bent, the elastic material functions as a margin to bend, and even when such an external force is applied, the connection is not loosened.

  The insertion part must be securely inserted into the receiving part. Therefore, the position where the receiving part is fixed to the open channel renewal member is separated from the end of the open channel renewal member by a length longer than the protruding length of the insertion part. It is assumed to be a position. If it carries out like this, even if an insertion part is pushed into a receiving part until the edge parts of an open channel renovation member contact, an insertion part or a receiving part will not be damaged.

  The method of fixing the elastic material to the outer peripheral surface of the open channel renewal member may be appropriately determined depending on each material. For example, when the open channel rehabilitation member is a metal, it may be fixed by adhesion or screw screws if it is a weld or bond, synthetic resin, composite resin, fiber reinforced resin, wood, precast concrete or the like. However, in order to prevent water leakage, when fixing with a screw screw, it is until it bites into the side wall of the open channel renovation member, and a through hole must not be provided in the side wall of the open channel renewal member. That is, it must be avoided to provide through holes and fix them with bolts and nuts, for example.

  In the corner portion between the bottom surface and the side surface of the open channel renovation member, one elastic material is bent so that the receiving portion and the insertion portion can be smoothly received or the bottom surface side elastic material And the elastic material on the side surface may be attached to the bottom surface or the side surface separately, and these butted portions may be connected by welding or bonding.

  In addition, in order to prevent sag of the water stop packing at the corner part, a string-like elastic material is arranged in addition to the water stop packing to cope with sag due to dimensional change of the own weight or the gap of the bent part. good. However, the thickness of the string-like elastic material needs to be smaller than the protruding height (described later) of the water-stopping packing so as not to hinder the water-stopping performance of the water-stopping packing.

  The outer surface of the insertion portion is in intimate contact with the inner surface of the receiving portion via a water stop packing. The water stop packing may be a normal rubber for water stop packing, and the material is not particularly limited. In addition, the cross-sectional shape may be the same as the cross-sectional shape of a normal water-proof packing. For example, the upper part may have a triangular shape or a curved surface shape, or in order to achieve the prevention of slipping and the improvement of water-stopping at the same time. Or a triangular shape inclined in one direction.

  The water stop packing may be fixed to at least one or both of the outer surface of the insert and the inner peripheral surface of the receiving portion. In any case, the insertion portion and the receiving portion are in close contact with each other through the water-stopping packing. Moreover, if water-stopping packing is used for both, the water-stopping performance at the connection point is further improved.

  A fixing method between the water-stopping packing and the elastic material may be fixed with a general elastic adhesive having the ability to bond rubber and metal and having excellent water resistance. For example, an epoxy adhesive, a urethane adhesive, or the like is preferably used.

  Further, the elastic material to which the water stop packing is fixed may be provided with a packing groove so that the portion receives the water stop packing. However, when the water stop packing is provided at the insertion portion, it is needless to say that the outer surface of the bottom surface of the packing groove must not be in contact with the outer surface of the open channel renewal member.

  In the open channel renovation member according to the first aspect, the insertion portion and the receiving portion are renewed with an elastic material, respectively, and the insertion portion is inserted into the receiving portion via the water blocking packing. Even if the opened channel renewal members installed are simply received and connected to each other, even if the axes of the arranged groove-shaped open channel renewal members are slightly shifted or the rehabilitation member is stretched or twisted, etc. The open portion of the open channel renewal member can be easily rehabilitated by the elasticity of the elastic members of the insertion portion and the receiving portion or the elasticity of the water stop packing, and the open channel can be renewed easily.

  Since the open channel retreading member of the invention 2 is made of fiber reinforced rigid foamed urethane resin, and both the receiving portion and the insertion portion made of an elastic body are arranged with an interval from the outer peripheral surface of the open channel retreading member, Rehabilitation is easier and the water stop effect is more reliable.

  In the open channel rehabilitation method of the invention 3, the rehabilitation member is placed in a predetermined position in the arrangement step and the water stop connection step and is arranged at a predetermined position to be an open channel, and the rehabilitation of the open channel is performed through the fixing step. Complete. If necessary, if the fixing step is a reinforced fixing step of backing with mortar or the like, a more durable open water channel is obtained. Therefore, for example, it is a rehabilitation method for an open channel that does not require time and effort for water stop work in rehabilitation of an old open channel, etc., and further ensures water stoppage. In the reinforcing and fixing step, a method of providing a gap between the open channel renewal member and the existing open channel or a method of placing mortar or the like is not particularly limited as long as a method similar to the conventional method is used.

  Next, the present invention will be described with reference to the drawings. FIG. 1 is a sectional view of a side of an example of an arrangement of open channel renewal members of an open channel in which open channel renovation members of the present invention are arranged, and an example in which a water stop packing is provided at a receiving portion. It is. FIG. 2 is a side cross-sectional view of an example of an arrangement portion in which a water stop packing is provided at the insertion portion. FIG. 3 is a cross-sectional view of a side of an example of an arrangement portion in which water-stopping packing is provided in both the receiving portion and the insertion portion. FIG. 4 is a cross-sectional view of an example of the packing, in which (a) and (b) have a curved section, and (c) and (d) have a triangular shape inclined to one side. FIG. 5 is a cross-sectional view of a side of an example of the receiving portion with the entrance widened.

  On the outer peripheral surface of the insertion-portion-side end portion 21 of the groove-shaped open-channel renovation member 2, from the insertion-portion-side end portion 21 of the open-channel renewal member 2 along the outer peripheral surface in a direction perpendicular to the axis of the open-channel renovation member 2. An insertion portion 4 made of a protruding elastic material is provided. The outer peripheral surface of the receiving portion side one end portion 22 of the open channel renovation member 2 is made of an elastic material projecting from the end of the open channel renewal member 2 along the outer peripheral surface in a direction perpendicular to the axis of the open channel renewal member 2. A receiving part 5 is provided.

  The insertion part 4 and the receiving part 5 are both crank-shaped. Therefore, in either case, the end of the crank shape on the protruding side is in a state of floating from the outer surface of the open channel renewal member 2 to form a gap. The gap between the insertion portion 4 and the outer surface of the insertion portion side one end portion 21 of the open channel renovation member 2 is such that an external force acts on the insertion portion, that is, the row portion 3 after the insertion portion 4 is inserted and connected to the receiving portion 5. Even if it is bent, twisted, pulled or pushed in, the elastic material of the insertion part 4 or the elastic material of the receiving part 5 functions as a margin to bend and receives such an external force. The connection will not loosen.

  The position of the receiving part 5 fixed to the open channel renewal member 2 is a position separated from the receiving part side one end 22 of the open water renewal member 2 by a length equal to or longer than the protruding length of the insertion part 4. If it carries out like this, even if the insertion part 4 is pushed into the receiving part 5 until the insertion part side one end parts 21 and 22 of the open channel renovation member 2 contact each other, the insertion part 4 or the receiving part 5 will be damaged. There is no.

  The insertion part entrance of the receiving part 5 may be spread outward as shown in FIG. If it carries out like this, when the open channel renovation member 2 is arranged and connected, the insertion part 4 can be inserted in the receiving part 5 more smoothly.

  On the outer peripheral surface of the open channel renovation member fixed end portion 41 of the elastic material of the insertion portion 4 or the inner peripheral surface of the open channel renovation member fixed end portion 51 of the elastic material of the receiving portion 5, the direction perpendicular to the axis of the open channel renewal member 2 In addition, a water stop packing 6 is inserted from the edge of the opening of the groove-shaped open channel renewal member 2 to the edge.

  The water-stopping packing 6 may have a normal upper cross-sectional shape that is a curved surface (see FIGS. 4 (a) and 4 (b)), but a triangular shape with the upper portion inclined in one direction (FIG. 4 (c). ) And (d) are preferably used. The inclination of the triangle is a direction that is easy to insert and difficult to pull out when the insertion portion 4 is inserted into the receiving portion 5. Therefore, the rubber packing 6 fixed to the insertion portion 4 and the rubber packing 6 fixed to the receiving portion 5 are opposite in the upward triangular inclination direction.

  The method of fixing the water stop packing 6 to the outer peripheral surface of the open channel renovation member fixing end portion 41 of the insertion portion 4 or the inner peripheral surface of the open passage renewal member fixing end portion 51 of the receiving portion 5 is as follows. It is necessary that it cannot be removed during insertion or after long-term use. Therefore, in this example, it is bonded and fixed with an elastic epoxy adhesive having water resistance, but a groove 42 for mounting the water-stopping packing 6 is provided in the open channel renovation member fixing end 41 of the insertion portion 4, Alternatively, a groove 52 for inserting the water-stopping packing 6 may be provided in the open channel rehabilitation member fixed end portion 51 of the receiving portion 5, and the water-stopping packing 6 may be attached thereto. Of course, it is even better if a concave groove and an adhesive are used in combination.

  The insertion portion 4 and the receiving portion 5 are the insertion portion 4 to which the water-stopping packing 6 is fixed, the receiving portion 5 without the water-stopping packing 6 (see FIG. 2), and the receiving portion 5 to which the water-stopping packing 6 is fixed. You may use the insertion part 4 (refer FIG. 1) which does not have the water stop packing 6, or the insertion part 4 and the receiving part 5 (refer FIG. 3) to which the water stop packing 6 was fixed. In any case, when the water-stopping packing 6 is provided, the water-stopping property of the row portions 3 is improved.

  For example, when rehabilitating an existing open channel using this open channel renewal member 2, as the first arrangement process, the open channel renewal member 2 is installed so that each insertion portion 4 and receiving portion 5 face each other. Arrange in the open channel side by side in the axial direction. Subsequently, as a second water stop connection step, the insertion portion 4 of the open channel renovation member 2 is inserted into the receiving portion 5 of the open channel renewal member 2 connected thereto, and the open channel renewal member 2 through the water stop packing 6. 2 are connected, and it is set as the open channel renovation open channel renovation member 1. In the row portion 3 between the open channel renovation members 2, the row portion 3 of the open channel renewal member 2 is stopped by the elasticity of the elastic members of the insertion portion 4 and the receiving portion 5 or the elasticity of the water stop packing 6. .

  As the third fixing step or the reinforcing fixing step, when the open channel rehabilitation members 2 are arranged, the rehabilitated open channel rehabilitation open channel renewal member 1 is fixed to the existing open water channel and the rehabilitation of the existing open water channel is completed. . If necessary, a fixing process is used as a reinforcement fixing process to create a gap between the outer peripheral surface of the open channel rehabilitation open channel renewal member 2 and the inner peripheral surface of the existing open water channel, and mortar is driven into the clearance. It may be cured to rehabilitate the existing open channel.

It is sectional drawing of the side of an example of the connection part of the open channel renovation open channel renovation member in which the open channel renovation member of this invention was arranged, and is an example by which the water stop packing is provided in the receiving part. It is sectional drawing of the side of an example of the connection part by which the water stop packing is provided in the insertion part. It is sectional drawing of the side of an example of the connection part by which the water stop packing is provided in both a receiving part and the insertion part. It is sectional drawing of an example of packing, (a), (b) is a thing whose section is a curved surface, (c), (d) is a triangular shape inclined to one side. It is sectional drawing of the side of an example of the receiving part by which the entrance was expanded.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Open channel 2 Open channel renovation member 21 One end part of the open part of the open channel renovation member 22 One end part of the receiving part side of the open channel renovation member 3 Arrangement part of the open channel renovation member 4 Insert part made of elastic material 41 of the insertion part Opening channel rehabilitation member fixed end 42 Water stop packing groove of insertion part 5 Receiving part made of elastic material 51 Opening channel rehabilitation member fixing end of receiving part 52 Water stopping packing groove of receiving part 6 Water stopping packing

Claims (3)

  A groove-shaped open channel rehabilitation member having a unit length, which is used for rehabilitating the open water channel by sequentially lining up the inner surface of the existing open channel along the flow direction, the longitudinal direction of the open channel renewal member A receiving portion made of an elastic material is provided on the outer peripheral surface of one end of the outer peripheral surface, and an insertion portion made of an elastic material and inserted into the receiving portion is provided on the outer peripheral surface of the other end. When a plurality of open channel renewal members are arranged in sequence, when they are arranged so that the facing ends of each open channel renewal member are in close contact with each other, the receiving portion is inserted. An open channel renewal member, wherein the portion is fitted through a waterproof seal.   The groove-shaped open channel renewal member of unit length according to claim 1 is made of fiber reinforced rigid foamed urethane resin, and the receiving portion and the insertion portion made of an elastic body are both spaced from the outer peripheral surface of the open channel renewal member. The water stop packing is attached to the outer peripheral surface of the insertion portion elastic member or the inner peripheral surface of the receiving portion elastic member from the edge of the groove-shaped opening of the open channel renewal member to the end edge, When the plurality of open channel renewal members are arranged in a row, the insertion portion and the receiving portion are brought into close contact with each other by the elasticity of the elastic material of the insertion portion and the receiving portion or the elasticity of the water-stopping packing, so that the arrangement portion is stopped. An open channel rehabilitation member characterized by that. An arrangement step of arranging a plurality of open channel renovation members according to claim 1 in a predetermined position so that each insertion portion and the receiving portion face each other, and insertion of the open channel renewal members arranged Is inserted into the receiving part of the open channel renewal member connected to it, and the open channel renewal members are connected to each other via the water stop packing, and the elasticity of the respective elastic material of the insertion part and the receiving part or the elasticity of the water stop packing Following the water stop connection process to stop and connect the lined parts of the open channel renovation member, the fixing process to fix the open channel renewal member arranged in place, and the water stop connection process if necessary An open channel renovation method comprising: a reinforcement fixing step of fixing an open channel renovation member at a predetermined position by providing a gap on an outer peripheral surface thereof, and placing mortar in the gap.

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