JP2011012742A - Method for laying pipe body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lay pipe bodies by sequentially carrying and joining a plurality of pipe bodies to a joining position without using a carriage.SOLUTION: A plurality of traveling wheels 4 are respectively detachably fixed to the side of the pipe bottom of the socket of each pipe body 1 and the side of the pipe bottom of the spigot thereof, the front and rear pipe bodies 1 are bendably joined around the axis center in a longitudinal direction, and two joined pipe bodies 1 are sequentially carried to the joining position inside an existing pipe S. In the order of the front pipe body 1 and the rear pipe body 1, the spigot is inserted and joined to the socket of the pipe body 1 to be joined, previously fixed to the existing pipe S.

Description

  The present invention relates to a pipe laying method.

  Conventionally, after rehabilitating existing pipes such as aging sewers, agricultural canals, and power canals, for example, after sequentially joining pipes such as plastic composite pipes made of a laminated structure of glass fiber reinforced plastic and resin mortar It has been proposed and implemented to refill existing pipes by filling the gap between the existing pipes and pipes with a backfill material.

  Specifically, as shown in FIG. 17, the tubular body 1 has a short tubular receiving port 3 fixed to one end of a straight tubular body 2 and a tapered surface at the other end of the tubular body 2. A slot 2a is formed and configured. Then, the pipe body 1 is sequentially suspended from the starting shaft M, the support material 102 is lifted by the jack 101 of the transport carriage 100, and the pipe body 1 is lifted, and then a battery car for transporting the pipe (not shown) is used. Then, the pipe 2 is carried into the existing pipe S, and the insertion port 2a is first transported and joined to the receiving port 3 of the opposite pipe body 1 fixed to the existing pipe S. After that, the gap between the existing pipe S and the pipe body 1 is filled with a backfilling material such as mortar, and fixed to the existing pipe S to regenerate the existing pipe S (for example, Patent Document 1). reference).

JP 2006-22618 A

  By the way, when rehabilitating an existing pipe such as a sewer by laying such a pipe body, since a new pipe body is supported and joined to the previously fixed pipe body by a transport carriage, If the joining of the pipe bodies is not completed, the battery car and the transport carriage cannot be returned to the starting shaft. As a result, new tubes cannot be carried in until the battery car and transport cart are collected in the start shaft, so if the construction distance is long, the battery car and transport between the start shaft and the joint position The time required for the carriage to reciprocate is increased, the number of constructions per unit time is reduced, and the construction period is prolonged.

  This invention is made | formed in view of such a problem, and provides the laying method of the pipe body which can aim at reduction of a man-hour and shortening of a construction period about the laying work of a pipe body.

  The present invention is a pipe laying method in which a pipe is transported and laid in an existing pipe, and has a receptacle at one end and a receptacle having a receptacle at the other end, and each tube bottom side of the receptacle The traveling wheels are detachably fixed to each other, and at least two tubes with the traveling wheels fixed are arranged in the conveying direction in the existing pipe, the rear part of the pipe body in the conveying direction, and the front part of the tubular body in the rear direction of the conveying direction, Are connected by a connecting member that is bent around the longitudinal axis, and the connected pipe is transported to the vicinity of the pipe to be joined that has been fixed in the existing pipe, and the connecting member is removed from the pipe, The front tube is joined to the tube to be joined, and then the rear tube is joined to the front tube.

  According to the present invention, the traveling wheel is detachably fixed to each tube bottom side of the tube receiving port and the insertion port, and at least two tubes having the traveling wheel fixed are arranged in the conveying direction in the existing pipe, and the conveying direction The rear part of the front tubular body and the front part of the tubular body rearward in the transport direction are connected by a connecting member that can be bent around the longitudinal axis. Next, the connected pipe body is transported to the vicinity of the pipe body to be joined previously fixed in the existing pipe, the connecting member is removed from the pipe body, and then the front pipe body is joined to the pipe body to be joined, Next, the rear tube is joined to the front tube.

  As a result, since a transport carriage is not used for transporting the tubular body, the battery car for transporting the tubular body immediately collects at least two tubular bodies to the joining position, and then immediately collects them in the starting shaft and moves to the next tubular body. The waiting time can be reduced. Therefore, when the construction section is a long distance, the work efficiency can be greatly improved and the construction period can be shortened. In addition, since at least two tubes are transported to the joining position, the transportation efficiency can be improved, and it is only necessary to attach a traveling wheel to each tube bottom side of the tube inlet and outlet, Compared to the work of lifting the pipe body using the transport carriage, the work necessary for transporting the pipe body can be simplified and the time can be shortened. Further, even when the existing pipe is gently curved, the front and rear pipe bodies can be smoothly transported by bending around the longitudinal axis so as to follow the curvature.

  In the present invention, when the front pipe body is joined to the pipe body to be joined, the front traveling wheel of the front pipe body is detached, and the front part of the front pipe body is connected to the rear part of the pipe body to be joined. The front part of the front pipe body is joined to the rear part of the pipe body to be joined while being supported by the centering jig arranged in the center, and then the running wheel at the rear part of the front pipe body is detached, A centering jig in which the alignment jig is arranged at the rear of the front tube, the front traveling wheel of the rear tube is detached, and the front of the rear tube is arranged at the rear of the front tube It is preferable to join the front part of the rear pipe body to the rear part of the front pipe body while supporting the front. Thereby, the front part of the pipe body is supported using the centering jig arranged at the rear part of the pipe body to be joined, which is fixed to the existing pipe, and the rear part of the pipe body to be joined is adjusted while adjusting the height. Can be joined.

  In the present invention, it is preferable to detachably fix a guide member having a wheel at an end portion facing in the left-right direction at least one of a front portion and a rear portion of the tubular body. As a result, even if the existing pipe is gently curved and the axial center of the pipe body deviates from the axial center of the existing pipe and deviates to one side, the wheel of the guide member hits the inner wall surface of the existing pipe. It is possible to prevent the tube body from contacting and damaging the existing tube by preventing contact and further displacement.

  According to the present invention, it is possible to reduce the number of man-hours and shorten the construction period by transporting and joining a plurality of pipe bodies to the joining position without using a transport carriage and joining the pipe bodies. Can do.

It is a cross-sectional view of the underground conduit explaining one embodiment of the pipe laying method of the present invention. It is a side view which abbreviate | omits and shows a part of back tube in the laying method of the tube of FIG. It is a front view of the tubular body of FIG. It is a side view of the traveling wheel attached to the receptacle of a tubular body. It is a perspective view which connects and shows the traveling wheel attached to the receptacle and outlet of an opposing pipe body, respectively. It is a side view of a guide member. It is a side view which shows a centering jig | tool with a tubular body. It is a front view which abbreviate | omits and shows the centering jig | tool of FIG. It is process drawing explaining the laying method of the tubular body of FIG. It is a front view of the underground pipe line explaining the support fixation point of a tubular body. It is process drawing explaining the laying method of the tubular body of FIG. It is process drawing explaining the laying method of the tubular body of FIG. It is explanatory drawing which shows the joining procedure of the tubular body using the joining jig | tool which joins a tubular body, and a joining jig. It is process drawing explaining the laying method of the tubular body of FIG. It is sectional drawing of an underground conduit explaining the pipe laid by the pipe laying method of FIG. It is sectional drawing of an underground pipe line explaining other embodiment of the laying method of the pipe body of this invention. It is sectional drawing of the starting shaft which explains the conventional laying method of a pipe.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 3 show an embodiment of a pipe laying method according to the present invention.

  In this embodiment, two pipe bodies 1 are connected and transported, and joined in order at the joining position. The leading pipe body 1 in the transport direction is connected to the front pipe body, the pipe on the start shaft M side. Body 1 is set as the rear tube.

  Here, as described above, the tube body 1 is a plastic composite tube, and has a short tube having a diameter larger than that of the tube body 2 at one end of a straight tube body 2 having a constant inner and outer diameter. In the tubular bodies 1 and 1 facing forward and backward, a tapered receiving port 3 is fixed and a tapered tapered slot 2a is formed at the other end of the tube body 2 toward the tip. It joins by inserting the insertion port 2a of the other pipe body 1 in the receptacle 3 of the one pipe body 1. FIG.

  In addition, a water stop rubber (not shown) is provided on the inner peripheral surface of the receiving port 3 of the tube 1 or the outer peripheral surface of the insertion port 2 a, and the pair of tubes 1, 1 insert the insertion port 2 a into the receiving port 3. Then, the receiving port 3 and the insertion port 2a are sealed through a waterproof rubber.

  And two traveling wheels 4 are spaced apart in the circumferential direction respectively on the tube bottom side of the front and rear ends of the tube body 1, specifically, on the tube bottom side of the receiving port 3 and the tube bottom side of the insertion port 2a. In addition, it is detachably fixed at a substantially symmetrical position.

  The traveling wheel 4 is configured by supporting a wheel 42 on a bifurcated fork member 41 so as to be rotatable around an axle 43, and the fork member 41 of the traveling wheel 4 is connected to the tube bottom side of the receiving port 3 of the tubular body 1 and the insertion side. It is fixed to a support member 5 attached to the tube bottom side of the mouth 2a.

  For example, as shown in FIG. 4, the support member 5 of the traveling wheel 4 provided in the receiving port 3 of the rear pipe body 1 includes a pipe body on an attachment member 51 having an L-shaped cross section and a vertical portion 51 a of the attachment member 51. It comprises upper and lower flat plate-shaped holding portions 52 and 52 that are integrally fixed with an interval equal to or greater than the thickness of one receiving port 3, and a fixing bolt 53 is screwed to the upper holding portion 52 and a mounting material 51. The horizontal portion 51 b is supported by the fork member 41. Thereby, after inserting between the upper and lower holding parts 52, 52 of the support member 5 into the receiving port 3 of the tubular body 1, the buffer member 54 such as a rubber plate is interposed and fixed to the inner peripheral surface side of the receiving port 3. The support member 5 can be fixed to the receiving port 3 of the tubular body 1 by screwing the bolt 53. The support member 5 provided with the traveling wheel 4 is attached to the receiving port 3 of the rear pipe body 1 in a circumferentially spaced manner and substantially symmetrically.

  An operation member 6 that adjusts the steering angle of the wheel 42 is provided on the traveling wheel 4 provided in the receiving port 3 of the rear tubular body 1. The operation member 6 includes an operation shaft 61 made of a bolt, a nut 62 screwed to the operation shaft 61, and a lever 63 connected to the operation shaft 61. The operation shaft 61 is a horizontal portion 51b of the support member 5. The lower end thereof is integrally fixed to the fork member 41. Accordingly, when the operation shaft 61 is rotated via the lever 63 in a state where the nut 62 is loosened, the fork member 41 fixed to the operation shaft 61 is rotated around the axis of the operation shaft 61 to drive the wheel 42. The direction can be adjusted. On the other hand, by screwing the nut 62, the horizontal portion 51b of the support member 5 can be sandwiched and fixed between the fork member 41 whose traveling direction of the wheel 42 is adjusted and the fork member 41.

  Further, as shown in FIG. 5, the support member 5 of the traveling wheel 4 provided at the receiving port 3 of the front tubular body 1 and the insertion port 2a of the rear tubular body 1 is formed of the receiving port 3 of the tubular body 1 and the insertion port 2a. The upper and lower arc-shaped gripping portions 52 and 52 formed with the curvature radii substantially corresponding to the curvature radii of the outer peripheral surface and the inner peripheral surface are connected with an interval greater than the thickness of the receiving port 3 and the insertion port 2a of the tube 1. The fork member 41 of the traveling wheel 4 is integrally fixed at a substantially symmetrical position while being spaced apart from the connecting portion 55 in the circumferential direction. Therefore, after inserting between the upper and lower holding portions 52, 52 corresponding to the receiving port 3 of the front tube 1 and the insertion port 2a of the rear tube 1, the inner peripheral surface side of the receiving port 3 and the insertion port 2a, respectively. The support member 5 can be fixed to the receiving port 3 of the front tube body 1 and the insertion port 2a of the rear tube body 1 by screwing the fixing bolt 53 with the buffer material 54 interposed therebetween.

  Here, the connecting member 7 is extended in the connecting portion 55 side direction at the holding portion 52 above the support member 5, and the front and rear connecting members 7, 7 are connected around the longitudinal axis via the connecting pin 71. Can be connected freely. That is, the support member 5 corresponding to the receiving port 3 of the front tube 1 is fixed, the support member 5 corresponding to the insertion port 2a of the rear tube 1 is fixed, and the connecting members 7 and 7 are connected to the connecting pins. By being connected by 71, the rear support member 5 can be integrally connected to the front support member 5 and can be rotated around the connection pin 71. As a result, when the supporting member 5 having the connecting member 7 connected by the connecting pin 71 is fixed to the receiving port 3 and the insertion port 2a of the corresponding tubular body 1, the existing tube S is gently curved. However, the two connected pipe bodies 1 and 1 can be bent around the connecting pin 71 so as to follow the curvature of the existing pipe S, and can be smoothly conveyed.

  Further, although not shown in detail, the support member 5 of the traveling wheel 4 provided at the outlet 2a of the front tubular body 1 is similar to the support member 5 of the traveling wheel 4 shown in FIG. The gripping portions 52, 52 are integrally connected by a connecting portion 55 with an interval equal to or greater than the thickness of the insertion opening 2a of the tube body 1, and the fork member 41 of the traveling wheel 4 is integrally fixed to the connecting portion 55. ing. Similarly to the support member 5 attached to the receiving port 3 of the rear tube 1 described above, the support member 5 provided with the traveling wheel 4 is also circumferentially spaced from the insertion port 2a of the front tube 1. And it is attached substantially symmetrically.

  By the way, the guide members 8 are detachably fixed to the left and right end portions of the receiving port 3 of the tubular body 1 and the left and right end portions of the insertion port 2a, respectively.

  As shown in FIG. 6, the guide member 8 includes a fork member 82 that rotatably supports a wheel 81 and a pair of flat plate-like gripping portions 83, 83 that are equal to or larger than the thickness of the receiving port 3 and the insertion port 2 a of the tube body 1. A holding member 85 formed by being integrally connected with a connecting portion 84 at an interval and a sliding rod 86 pressed and urged by a spring (not shown) housed therein are slidably inserted. The distal end of the sliding rod 86 of the spring cylinder 87 is fixed to the fork member 82 integrally, and the base end of the spring cylinder 87 is integrated to one holding part 83 of the holding member 85. It is fixed to. A fixing bolt 88 is screwed into one holding portion 83 of the holding member 85 in the guide member 8, and the receiving port 3 of the tube body 1 and the insert are inserted between the pair of holding portions 83, 83 of the holding member 85. After being inserted into the opening 2a, the fixing bolt 88 is screwed on the inner peripheral surface side of the receiving opening 3 and the inserting opening 2a, and a fixing bolt 88 is screwed in, so that the guides are respectively inserted into the receiving opening 3 and the inserting opening 2a of the tubular body 1. The member 8 can be fixed.

  Further, a centering jig 9 is prepared for inserting and joining the insertion port 2a of the tube body 1 into the receiving port 3 of the tube body 1 that is first supported and fixed to the existing tube S.

  As shown in FIGS. 7 and 8, the centering jig 9 is integrally fixed to the left and right of the frame 91 and the front and rear of the frame 91, and supports the wheel 92 rotatably at the lower end and extends obliquely downward. A support tube 94 that is slidably inserted in the vertical direction on the front and back of the frame 91 and that has an arcuate support plate 941 fixed to the upper end, and one bottom on the front and rear ends of the frame 91; A triangular undulation arm 96 having a corner portion pivotably connected around a horizontal axis and a support caster 95 rotatably supported at a top corner portion, and a frame 91 and a base of the undulation arm 96 are disposed. The supporting caster 95 can be raised and lowered by rotating the raising and lowering arm 96 around the shaft supporting part with the frame 91 by extending and contracting the jack 97. .

  The support cylinder 94 slidably fitted into the frame 91 has bolts and nuts at both ends of the fixing pin 942 inserted through a guide groove (not shown) extending in the vertical direction of the frame 91 and the support cylinder 94. By using and tightening, the frame 91 can be fixed at an arbitrary height position within the range of the guide groove. That is, the centering jig 9 is moved to the receiving port 3 side of the tube body 1, the support tube 94 is pulled up with respect to the frame 91, and the support plate 941 is abutted against the inner peripheral surface on the tube top portion side of the tube body 2. The centering jig 9 can be fixed at a predetermined position of the tube body 1 by tightening both ends of the pin 942.

  Next, a construction procedure for laying and rehabilitating the pipe body 1 on the existing pipe S such as a sewer by the pipe body 1 that can be conveyed via the traveling wheel 4 will be described.

  This laying method is executed after first cleaning the inner peripheral surface of the construction section of the existing pipe S with high-pressure water.

  In order to facilitate the explanation of the laying method, the pipe body 1 is supported and fixed to the existing pipe S at the start position (delivery destination) of the construction section, and the centering jig 9 is located at the start position of the construction section. It is assumed that it is carried into the fixed tube 1 (see FIG. 9).

  Further, the tube 1 is supported and fixed to the existing pipe S by installing and supporting the support member 10 on the tube bottom of the existing pipe S corresponding to the receiving port 3 side end of the tube 1 and the receiving port 3 side end. The float prevention material 11 is disposed on the outer peripheral surface of the substantially upper half portion including the top of the tube, and the tube body 1 is fixed at a position where the axis is substantially coincident with the axis of the existing tube S. That is, as shown in FIG. 10, the levitation preventive material 11 includes a plurality of arcuate plate members 111 that are curved and formed with an inner diameter corresponding to the outer diameter of the receiving port 3 of the tubular body 1. A nut 113 is screwed into each of the two bolts (male threads) 112. Therefore, the anti-levitation material 11 is arranged in the substantially upper half including the top of the tube 3 at the end of the receiving port 3 side of the tube body 1, and by adjusting the screwing amount of the nut 113 with respect to each bolt 112, The tip can be brought into contact with the substantially inner surface of the upper half including the top of the existing pipe S at intervals in the circumferential direction. Thereby, the pipe body 1 can be supported and fixed to the existing pipe S via the support member 10 and the anti-floating member 11.

  In addition, about the pipe body 1 fixed to the starting end position, while being supported by the support material 10 also about the insertion port 2a, it is being fixed by the floating prevention material 11. FIG.

  When laying the pipe body 1, the pipe body 1 is sequentially suspended from the start shaft M so that the insertion port 2 a faces the conveyance direction, and the traveling wheel 4 is attached via the corresponding support member 5.

  Specifically, since the pipe body 1 previously suspended becomes a front pipe body in the transport direction, two support members each provided with traveling wheels 4 on the pipe bottom side of the insertion port 2a. 5 are attached so as to be substantially symmetrical with respect to the circumferential direction. In addition, a pair of traveling wheels 4 are provided at intervals in the circumferential direction on the tube bottom side of the receiving port 3 of the tube 1, and a support member 5 corresponding to the curvature radius of the receiving port 3 is attached. Further, guide members 8 are respectively attached to the left and right ends of the insertion opening 2a and the receiving opening 3 of the tubular body 1 (see FIG. 1).

  The horizontal dimension of both guide members 8 is set to be smaller than the inner diameter of the existing pipe S, and the guide member 8 is in contact with the existing pipe S when the tube body 1 is at the center in the horizontal direction in the existing pipe S. Without a certain gap.

  If the guide member 8 is attached together with the support member 5 provided with the traveling wheels 4 to the insertion port 2a and the receiving port 3 of the tubular body 1, the tubular body 1 is suspended from the start shaft M, and the battery car E is used, or Then, the operator moves the tube 1 in advance to a position that does not affect the operation of attaching the traveling wheel 4 of the tubular body 1.

  Next, the new pipe body 1 is suspended from the start shaft M. Since the next tubular body 1 is a rear tubular body, a pair of traveling wheels 4 are provided at intervals in the circumferential direction on the tube bottom side of the insertion opening 2a, corresponding to the radius of curvature of the insertion opening 2a. A supporting member 5 is attached. Further, a support member 5 on which a traveling wheel 4 is fixed via an operation member 6 is attached to the tube bottom side of the receiving port 3 of the tube body 1 so as to be spaced in the circumferential direction and substantially symmetrical. Thereafter, the operation member 6 is operated to adjust the traveling direction of the wheel 42 so that the extension line of the ground contact point of the wheel 42 with respect to the existing pipe S is parallel to the axis of the existing pipe S. Further, guide members 8 are respectively attached to the left and right ends of the insertion opening 2a and the receiving opening 3 of the tubular body 1 (see FIGS. 1 to 3).

  If the traveling wheel 4 and the guide member 8 are attached to the next tubular body 1 via the support member 5, after the tubular body 1 is suspended from the start shaft M, the receiving body of the forward tubular body 1 lowered first. 3 through a connecting pin 71 and a connecting member 7 provided through a support member 5 at a rear opening 1a of a rear pipe body 1 lowered through a support member 5. Link. That is, the supporting member 5 provided with the two traveling wheels 4 is attached to the receiving port 3 and the insertion port 2a of the opposite tubular body 1, and the connecting member 7 fixed to these supporting members 5 is pin-connected. The front and rear tube bodies 1 are connected.

  If the front and rear tube bodies 1 are connected, a fitting (not shown) for connecting to the battery car E is attached to the receiving port 3 of the rear tube body 1, and then the battery car E is run, so that the two front and rear tubes are connected. The body 1 is integrally conveyed to the start end joining position of the construction section of the existing pipe S (see FIG. 9).

  At this time, even if the existing pipe S is gently curved, the front and rear pipe bodies 1 are turned around the connecting pin 71, bent, and can be smoothly conveyed. Even if the axis of the pipe body 1 deviates from the axis of the existing pipe 1 due to the bending of the existing pipe S, the wheel 81 of the guide member 8 contacts the inner wall surface of the existing pipe S, Since it is buffered by a spring (not shown) of the spring cylinder 87 and pushed out by its elastic force, it returns to its original travel position and can reliably prevent the tube body 1 from contacting and damaging the existing pipe S (FIG. 1). reference). Further, when it is necessary to avoid a damaged portion of the existing pipe S during traveling by the traveling wheel 4, the traveling direction of the wheel 42 can be changed by operating the operation member 6.

  If the battery car E transports the two front and rear pipes 1 to the start joint position of the construction section, the connection between the battery car E and the rear pipe 1 is released, and the battery car E immediately enters the start shaft M. It collects and prepares for the conveyance of the next tubular body 1.

  On the other hand, the front and rear tube bodies 1 transported to the joining position were removed from the connection pin 71 to release the connection, and the fixing bolt 88 was loosened and the guide member 8 was removed, and then fixed to the existing pipe S first. The front tube 1 is moved so as to approach the tube 1 (see FIG. 11). Then, the receiving port 3 of the centering jig 9 fixed to the receiving port 3 side end of the tube 1 fixed to the existing tube S on the inner peripheral surface of the front tube 1 on the insertion port 2a side. It is made to oppose with the support caster 95 protruded outward from. In this state, the jack 97 of the centering jig 9 is extended, and the support caster 95 is raised through the hoisting arm 96 to lift the end of the front tube 1 on the side of the insertion port 2a. The height is adjusted so that the axial center of the tube 1 fixed to S coincides with the axial center. At the same time, the fixing bolt 53 of the support member 5 attached to the front tube body 1 on the insertion port 2a side is loosened, and the support member 5 provided with the traveling wheels 4 is removed.

  Next, the insertion opening 1b of the front tubular body 1 is inserted and joined to the receiving opening 3 of the tubular body 1 previously fixed to the existing pipe S using the joining jig 12 (see FIG. 12).

  Here, as shown in FIG. 13, the joining jig 12 is configured by connecting a pair of joining plates 121, 121 via a pair of lever hoists 122, and each joining plate 121 is a tube body of the tubular body 1. The length can be adjusted so that the two end faces can be engaged. The joining jig 12 is engaged with the end face of the tube body 2 in the tube body 1 to which the one joining plate 121 is joined, and the tube body 2 in the tube body 1 to which the other joining plate 121 is fixed. After being engaged with the end face of the insertion port 2a, a tubular body 1 is attached to which the shackle 124 provided at the tip of the wire rope 123 of the lever hoist 122 is locked to each joining plate 121 and operated by operating the lever hoist 122. By pulling the wire rope 123 on the side, the tubular body 1 to be joined to the fixed tubular body 1 is forcibly drawn, and the outlet 2a of the tubular body 1 to be joined to the receiving port 3 of the fixed tubular body 1 is provided. It is inserted and joined.

  At this time, the front pipe body 1 which is the pipe body 1 to be joined has a movable wheel 4 provided on the support caster 95 of the centering jig 9 and the receiving port 3 side of the pipe top side of the insertion port 2a. It moves toward the tube 1 to be joined.

  If the front pipe body 1 is joined to the pipe body 1 previously fixed to the existing pipe S, the support member 10 is installed on the pipe bottom side of the receiving port 3 of the front pipe body 1 and the top of the pipe is attached. The anti-floating material 11 is disposed on the outer peripheral surface of the substantially upper half portion including the support and fixed to the existing pipe S. Thereafter, the fixing bolt 53 of the support member 5 attached to the receiving port 3 of the front tubular body 1 is loosened, and the support member 5 provided with the traveling wheels 4 is removed. Next, the jack 97 of the centering jig 9 is reduced, and the support cylinder 94 is pulled down and moved to the end of the newly fixed front tube 1 on the receiving port 3 side. In a state of projecting outward, the support cylinder 94 is pulled up and abutted against the inner peripheral surface of the pipe top side of the pipe main body 2 to be fixed.

  When the front tube body 1 is fixed, the rear tube body 1 is moved so as to approach the front tube body 1. And the inner peripheral surface side of the insertion port 2a of the rear tube 1 is made to face the support caster 95 of the centering jig 9 protruding outward from the receiving port 3 of the front tube 1 fixed previously. After that, the jack 97 of the centering jig 9 is extended, and the end of the rear tube 1 on the side of the insertion port 2a is lifted via the support caster 95, and the axial center of the front tube 1 fixed earlier is The height is adjusted so that the axes coincide with each other, the fixing bolt 53 of the support member 5 attached to the insertion port 2a side is loosened, and the support member 5 provided with the traveling wheels 4 is removed. Next, the joining jig 12 is disposed between the end surface on the receiving port 3 side of the tube body 2 in the rear tube body 1 and the end surface on the insertion port 2a side of the tube body 2 in the front tube body 1 that is fixed first. Then, the rear tube body 1 is forcibly drawn, and the insertion port 2a is inserted into and joined to the receiving port 3 of the fixed front tube body 1 (see FIG. 14).

  If the rear pipe body 1 is joined to the front pipe body 1 fixed to the existing pipe S, the support member 10 is installed on the pipe bottom side of the receiving port 3 of the rear pipe body 1 and the pipe The anti-floating material 11 is disposed on the outer surface of the substantially upper half including the top, and is supported and fixed to the existing pipe S. Thereafter, the fixing bolt 53 of the support member 5 attached to the receiving port 3 of the rear pipe body 1 is loosened, the support member 5 provided with the traveling wheels 4 is removed, and the centering jig 9 is newly supported and fixed. The rear tube body 1 is moved to the end portion on the side of the receiving port 3 and fixed in a state where the support caster 95 protrudes outward from the receiving port 3.

  On the other hand, when the two front and rear pipe bodies 1 are sequentially joined at the joining position, preparations for conveying the next front and rear two pipe bodies 1 by the battery car E returned to the start shaft M are started. That is, the pipe body 1 suspended and supported by the start shaft M is used as the front pipe body, and the two support members 5 each having the traveling wheel 4 fixed to the pipe bottom side of the insertion port 2a are spaced apart in the circumferential direction. The pair of traveling wheels 4 are fixed to the tube bottom side of the receiving port 3 at intervals in the circumferential direction, and the support member 5 corresponding to the receiving port 3 is mounted. Further, guide members 8 are attached to the left and right ends of the insertion opening 2a and the receiving opening 3 of the tubular body 1, respectively.

  If the traveling wheel 4 and the guide member 8 are attached to the insertion port 2a and the receiving port 3 of the tubular body 1 via the support member 5, respectively, the tubular body 1 is suspended from the start shaft M, and the traveling wheel of the next tubular body 1 is suspended. 4 is moved in advance to a position that does not affect the mounting operation.

  Next, the new pipe body 1 is supported as a rear pipe body suspended from the start shaft M, and a pair of traveling wheels 4 are fixed to the insertion port 2a at intervals in the circumferential direction, corresponding to the insertion port 3. After attaching the support member 5 and attaching the support member 5 fixed to the receiving port 3 via the operation member 6 to the receiving port 3 so as to be circumferentially spaced and substantially symmetrical, the wheel The traveling direction of 42 is adjusted. Further, guide members 8 are attached to the left and right ends of the insertion opening 2a and the receiving opening 3 of the tubular body 1, respectively.

  If the traveling wheel 4 and the guide member 8 are attached to the next tubular body 1 via the support member 5, after the tubular body 1 is suspended from the start shaft M, the forward tubular body 1 and the rear tubular body 1 are lowered. The lowered pipe body 1 is connected to the connecting member 7 extending from the support member 5 attached to the insertion port 2a and the receiving port 3 by inserting a connecting pin 71 therethrough.

  When the pair of front and rear tube bodies 1 are connected, the two front and rear tube bodies 1 are conveyed toward the next joining position via the battery car E. That is, since the joining work of the two front and rear pipe bodies 1 that have been transported previously can be continued or the two pipe bodies 1 can be transported sequentially regardless of whether they have been completed, a conventional transport cart is used. Compared with the pipe making method, the waiting time of the transport cart is eliminated, and the work efficiency can be greatly improved. Especially when the construction section becomes long distance when the shaft cannot be excavated on both sides of the construction section, such as in mountainous areas, and it is necessary to transport and construct the pipe 1 from only one side using the excavated shaft as the starting shaft Even so, the construction period can be greatly shortened.

  If the two front and rear pipe bodies 1 are transported to the next joining position by the battery car E, the connection between the battery car E and the rear pipe body 1 is released, and the battery car E is immediately returned to the start shaft M. It prepares for conveyance of the next tubular body 1. At this time, the support member 5 provided with the traveling wheel 4 used when the pipe body 1 is transported first can be carried out to the start shaft M using the battery car E, and the new pipe body 1 is transported again. Used for.

  The tube body 1 before and after being transported to the joining position releases the connection pin 71 to release the connection, and after removing the guide member 8, the centering jig 9 and the joining jig 12 are used as described above. The front tube body 1 and the rear tube body 1 are joined to the tube body 1 fixed to the existing tube S in the order, and supported and fixed to the existing tube S by the support material 10 and the anti-floating material 11.

  Similarly, after the traveling wheels 4 are attached to the two front and rear tubes 1 and conveyed to the joining position by the battery car E, the front tube 1 and the rear tube 1 are fixed to the existing tube S in this order. It joins to the pipe body 1 and supports and fixes to the existing pipe S.

  In this way, if a large number of pipes 1 are joined and supported and fixed over the construction section (see FIG. 15), although not shown in detail, the outlet 2a side of the pipe body 1 at the beginning of the construction section is not shown. A partition wall is installed on the outer peripheral surface of the end portion and the outer peripheral surface of the tube body 1 on the receiving port 3 side at a set distance to partition the gap between the inner peripheral surface of the existing pipe S and the outer peripheral surfaces of the plurality of tube bodies 1. After that, an injection pipe is connected to the grout hole formed in the tube body 1 through the inside of the tube body 1, and a backfill material, for example, air mortar, is inserted between the inner peripheral surface of the existing tube S and the outer peripheral surface of each tube body 1. Fill the gap. Hereinafter, the backfilling material is filled in order up to the start shaft M for every predetermined section. Thereby, each tubular body 1 can be fixed to the existing pipe S, and the existing pipe S can be rehabilitated.

  When filling the backfill material, each tubular body 1 is joined to each other by an anti-floating material 12 provided at the end of the tubular body 1 on the receiving port 3 side and fixed to the existing pipe S. 1 is supported without lifting.

  By the way, in embodiment mentioned above, although the case where it attached to the right-and-left each edge part of the receptacle 3 of each tubular body 1 and each right-and-left edge part of the insertion opening 2a using the clamping member 85 was demonstrated as the guide member 8, respectively. The spring cylinder 87 provided with the wheels 81 is fixed to the ring-shaped fixing band at a distance of approximately 180 ° to be used as a guide member and wound around the front and rear ends of the tubular body 1 or in the vicinity thereof. 1 may be used by being fixed so as to protrude outward in the left-right direction. In this case, as the ring-shaped fixing band, it is preferable to form a substantially half-circumferential portion using a flexible material, for example, rubber or the like when attaching to or detaching from the tube body 1.

  Further, the guide member 8 may be used when the existing pipe S is curved, and is not necessarily attached when it is known in advance that the existing pipe S is continuous in a straight line.

  Furthermore, in embodiment mentioned above, although the connected pipe body 1 was conveyed to the joining position of the existing pipe S 2 each, the case where it joins in order of the front pipe body 1 and the back pipe body 1 was illustrated, As shown in FIG. 16, the adjacent front tube body 1 and the intermediate tube body 1 and the intermediate tube body 1 and the rear tube body 1 are connected, and three connected tube bodies 1 are connected to the existing pipe S. It can convey to a joining position and it can also join in order of the front tube 1, the intermediate tube 1, and the back tube 1.

DESCRIPTION OF SYMBOLS 1 Tube 2 Tube body 2a Insert 3 Receiving port 4 Traveling wheel 5 Support member 6 Operation member 7 Connection member 8 Guide member 9 Centering jig 10 Support material 11 Lifting prevention material 12 Joining jig S Existing pipe E Battery car

Claims (3)

  A pipe laying method in which a pipe body is transported and laid in an existing pipe, and has a receiving port at one end and a receiving port at the other end and a running wheel on each tube bottom side of the inserting port. Are fixed in a removable manner, and at least two tubes with fixed traveling wheels are arranged in the conveying direction in the existing tube, and the rear part of the tube body in the front direction of the conveying direction and the front part of the tube body in the rear direction of the conveying direction are arranged in the vertical direction. Connected with a connecting member that bends around the axis, and transports the connected tube to the vicinity of the tube to be joined previously fixed in the existing tube, removes the connecting member from the tube, and then the front tube A pipe body laying method comprising: joining a pipe body to be joined, and then joining a rear pipe body to a front pipe body.   2. The pipe laying method according to claim 1, wherein when the front pipe body is joined to the pipe body to be joined, the traveling wheel at the front part of the front pipe body is detached, and the front part of the front pipe body is removed. The front part of the front pipe body is joined to the rear part of the pipe body to be joined while being supported by the centering jig arranged at the rear part of the pipe body to be joined, and then the rear part of the front pipe body is run. After the wheel is removed, a centering jig is placed at the rear of the front tube, the running wheel at the front of the rear tube is removed, and the front of the rear tube is moved to the front of the tube. A pipe laying method comprising joining a front part of a rear pipe body to a rear part of a front pipe body while being supported by a centering jig arranged at the rear part.   3. The pipe laying method according to claim 1 or 2, wherein a guide member having a wheel at a laterally facing end is detachably fixed to at least one of a front part and a rear part of the pipe body. How to lay the body.

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