Rehabilitating pipe and method for laying a rehabilitating pipe

Abstract

A rehabilitating pipe is assembled inside an existing pipe using segments to repair the existing pipe. A coupling member is inserted through a segment when it is coupled in the longitudinal direction to another segment coupled already, and the coupling member is joined to the coupling member of another segment already coupled. During joining the segment is clamped against another segment and both the segments are coupled in the longitudinal direction. Such steps are repeated to couple other segments to segments already coupled until the rehabilitating pipe is laid to a predetermined length.

Description

technical field [0001] The present invention relates to a repair pipe to be laid inside an existing pipeline, such as a sewer pipe, for use in repairing an existing pipeline, and to a method of laying such a repair pipe. Background technique [0002] A method of repairing existing pipelines is known from Japanese Patent Application Publication No. 2003-214098, wherein such as Figure 16 As shown, the composite pipe is constructed to repair existing pipes such as sewage pipes by assembling and laying a repair pipe 3 inside the existing pipe 4, the outer diameter of which is slightly smaller than the inner diameter of the existing pipe 4, and then repairing A filler (not shown) is filled in the gap between the outer periphery of the pipe 3 and the inner wall surface of the existing pipe 4 and hardened. The repair pipe 3 comprises a segment 1 for the repair pipe. That is, if Figure 17 As shown, the repair pipe 3 is assembled by the assembler S by connecting the arc segment 1...

AI Technical Summary

Problems solved by technology

[0004] However, there is a problem that there is a considerable risk in the structure of the conventional repair pipe 3 in which the segments 1 of the pipe parts 2 are joined longitudinally, that is, due to the If the bolt 9 protrudes from one side of the segment 1 by a length slightly smaller than its width in the longitudinal direction (for example, slightly less than 20 cm), there is a risk that the protruding part of the bolt 9 will hit the assembler's face, etc., especially when Assemblers while rolling, transporting and coupling pipe parts 2 in dark existing pipe 4

[0005] In addition, the problem in the conventional structure is that the coupling work is laborious and time-consuming, because the nuts must be screwed and tightened in advance in order to fasten the bolts 9 to the segments 1, and also when coupling the pipe parts 2 in the longitudinal direction. Screw the nut further and tighten it onto the bolt 9

[0006] In addition, when the gap between the outer circumference of the repair pipe 3 and the inner wall surface of the existing pipe 4 is filled and hardened after the repair pipe 3 is laid, the bolts 9 are embedded in the filler and play a role in contact with the reinforced concrete. However, the problem is that when calculating the strength of the composite pipe composed of the repair pipe 3 and the filler, the strength cannot be estimated because the bolts 9 are not interconnected into a unit

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