Tension machine for adjusting tension of sensing optical cable

Abstract

The invention discloses a tensile machine for adjusting the tension of a sensing optical cable, and relates to the technical field of sensing optical cable installation. The tensile machine comprises a rack, wherein the rack is a box body structure or a frame structure, a tension meter, a tensioning wheel and a plurality of reels are installed on the rack, a pull rope is wound on the tension wheel and the reels together, and one end of the pull rope is fixed with the tension meter; and the rack is further provided with a linear driving structure for driving the tensioning wheel to move. The tension machine can flexibly apply prestress to the sensing optical cable, and meanwhile ensured that values of the prestress applied along the sensing optical cable are kept consistent.

Description

technical field [0001] The invention relates to the technical field of installation of sensing optical cables, in particular to a tension machine for adjusting the tension of sensing optical cables. Background technique [0002] Due to its own particularity, underground tunnels will be affected by various factors such as geology, topography, and climate conditions during construction and operation. Therefore, in order to ensure the safe use of engineering facilities, safety monitoring of tunnel structures in operation , to ensure the safety of the main structure is necessary. Existing health monitoring technologies for tunnel structures have the following deficiencies: (1) they are all point-type layouts, which are often random, and the most dangerous places may often be missed; (2) the survival rate is low, and in some harsh In the rock and soil environment, it is easy to be damaged by the environment and loses its effectiveness; (3) the degree of real-time, parallel and a...

AI Technical Summary

Problems solved by technology

Existing health monitoring technologies for tunnel structures have the following deficiencies: (1) they are all point-type layouts, which are often random, and the most dangerous places may often be missed; (2) the survival rate is low, and in some harsh In the rock and soil environment, it is easily damaged by the environment and loses its effectiveness; (3) the degree of real-time, parallel and automatic monitoring is not high; (4) there is a lack of long-distance and large-area monitoring technology

[0004] Generally speaking, if the fiber is not pre-stretched, the fiber segment between the two fixed points is in a relaxed state; when the structure is deformed, although the fiber is stretched with the deformation of the structure, it is still possible In a state of relaxation and no stress change, the fiber optic strain instrument cannot normally capture the strain value of the structure or capture the incomplete strain value

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