Prestressed concrete cylinder pipe capable of monitoring strain in real time and manufacturing method

Abstract

The invention discloses a prestressed concrete cylinder pipe capable of monitoring strain in real time, which comprises pipe core inner layer concrete, a steel cylinder, pipe core outer layer concrete, a prestressed steel wire and a mortar protective layer which are sequentially wrapped from inside to outside, and a glass fiber composite base optical cable is arranged on the pipe core inner layer concrete; a carbon fiber composite-based optical cable is arranged on the steel cylinder; a high-transmission tightly-wrapped sheath strain sensing optical cable is arranged on the outer layer concrete of the pipe core, bare optical fibers are arranged on the prestressed steel wire, and the glass fiber composite base optical cable is arranged on the mortar protection layer. The invention further relates to a manufacturing method of the prestressed concrete cylinder pipe capable of monitoring the strain in real time, the distributed optical fiber sensors are implanted in the PCCP manufacturing process, the problem of long-distance distributed monitoring of the strain of an existing PCCP pipeline is solved, and technical support can be provided for safety evaluation of the operation stage of the prestressed concrete cylinder pipe. And the application value is high.

Description

technical field [0001] The invention belongs to the technical field of structural health monitoring, and relates to a prestressed steel cylinder concrete pipe capable of monitoring strain in real time, and further relates to a manufacturing method of the concrete pipe. Background technique [0002] Prestressed steel cylinder concrete pipe (PCCP) is a composite pipe composed of concrete core, anti-seepage thin steel cylinder, prestressed steel wire and mortar protection layer. The concrete pipe core is the main structural part of the pipe, which can provide a smooth inner surface to facilitate water flow; the thin steel cylinder is the anti-seepage body of PCCP, which is generally lined or embedded in the pipe core concrete; the prestressed steel wire is spirally wound with a certain tensile stress On the tube core concrete, the tube core generates uniform precompression stress to resist the tensile stress generated by internal pressure and external load; the dense protective...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for manufacturing a prestressed steel cylinder concrete pipe that can monitor strain in real time based on a distributed optical fiber sensor, which solves the problem that the prestressed steel cylinder concrete pipe existing in the prior art cannot realize fully distributed monitoring The problem

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