Intelligent extruding stay rope based on filled type epoxy coating steel strand and manufacturing method

Abstract

Provided is an intelligent extruding stay rope based on a filled type epoxy coating steel strand. One of side wires of the epoxy steel strand is a side wire with a groove, and optical fiber and an optical fiber grating sensor are implanted in the groove; the Bragg grating wavelength change of the intelligent side wire of the implanted epoxy steel strand is demodulated and analyzed by using an optical fiber grating demodulation device, and thus the stay rope force is measured; due to the fact that transmission of optical signals is not influenced by the environment, the optical fiber and the optical fiber grating sensor can stably and correctly monitor the stay rope force for a long time. An anchoring sleeve is of a single-inner-hole multi-inner-cone structure, the anchoring force is strengthened, on one hand, the epoxy layer of the filled type epoxy coating steel strand is not needed to be peeled, and on the other hand, the outer diameter of a whole anchor head is reduced. Inclinationis formed on the outer side surface of a sealing ring in a sealing cylinder, and the inclination is 10 degrees larger than the inner inclination of the sealing cylinder. The defects of multiple innerholes (the number of the holes is identical to that of the anchoring steel strands) and large machining difficulty of the anchoring sleeve of an existing extruding type stay rope are overcome, and thesingle-hole multi-inner-cone anchoring sleeve for the extruding stay rope based on the filled type epoxy coating steel strand is provided and is convenient to machine.

Description

technical field [0001] The invention relates to the field of engineering structure cables, in particular to an intelligent extruded cable based on filled epoxy-coated steel strands. Background technique [0002] At present, most bridges, railway stations, high-speed rail stations, stadiums, wind turbine power generation towers, and steel structure cable net structures in China use cables as tension members. The cables mainly include clip anchors, cold cast anchors, and hot cast anchors. search. However, in large housing buildings, industrial plants, public buildings, steel arch bridges, and steel tower cable-stayed bridges, due to structural size and space constraints, cable anchor heads with smaller outer diameters are required. Traditional parallel steel wire cold-cast anchor cables, hot-cast anchor cables and steel strand group anchor cables are difficult to achieve this requirement due to the large size of the anchor head, and the engineering cost is relatively high. ...

AI Technical Summary

Problems solved by technology

The magnetic flux sensor is easily affected by the engineering use environment. When the electric field or magnetic field in the use environment is different from the electric field or magnetic field at the factory calibration, a large deviation will occur; after the pressure sensor is installed, the volume of the anchor head becomes larger and the production cost is higher. ; The durability and stability of the hydraulic sensor are poor, and it is impossible to achieve long-term, stable and correct monitoring

[0005]The existing notching technology cannot satisfy the assembly line production, the notching is difficult and the quality is difficult to guarantee

[0006]Patent application number 201620893216.X (a kind of filled epoxy steel strand extrusion anchor cable) and patent application number 201610678984.8 (a steel strand cable and production method) need to peel off the epoxy layer of the steel strand in the anchor sleeve, the actual operation is difficult

[0007] In addition, the tightness of the existing anchorage is not enough

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