Flexible pile concrete strain gauge embedding device and method

Abstract

The invention provides a flexible pile concrete strain gauge embedding device and method. The device comprises a steel pipe sleeve, a steel sharp head, a sharp head sleeve, a steel wire, a steel hexagon head bolt and a concrete strain gauge positioning steel bar. According to the flexible pile concrete strain gauge embedding device, circular holes are formed in the upper portion of the steel pipesleeve, and the lower portion of the steel pipe sleeve is inserted into the steel sharp head in a bearing mode. The steel sharp head is formed by welding a cross-shaped wall protection steel plate andthe inner wall of the steel sharp head, the circular holes are formed in the two sides of the upper portion of the cross-shaped wall protection steel plate, and a groove is formed in the top of a steel plate. One end of the steel wire penetrates through the circular holes above the cross-shaped wall protection steel plate in the steel sharp head, extends out of the steel pipe sleeve and is connected with the steel hexagonal head bolt in a bound mode, and the steel hexagonal head bolt is fixed in a positioning hole above the steel pipe sleeve. The steel pipe sleeve and the steel sharp head areassembled into a whole by tensioning the steel wire, and separation of the steel pipe sleeve and the steel sharp head is achieved by loosening the steel wire. According to the flexible pile concretestrain gauge embedding method, a concrete strain gauge can be embedded through simple operation, and the embedding difficulty of the concrete strain gauge is greatly reduced.

Description

technical field [0001] The invention designs a flexible pile concrete strain gauge embedding device and method, which are suitable for strain monitoring of various flexible pile bodies and belong to the field of civil engineering. Background technique [0002] The stress-strain test of various engineering piles is an important method to test the engineering performance of piles such as compressive and bending resistance. For stiffened piles, the steel cage is set in the pile body, so the strain gauge can be bound on the steel cage in advance, and then lowered into the borehole together with the steel cage. After the concrete is poured and hardened, the strain gauge and concrete form a whole, After the force is applied, the strain of the pile body can be tested, and then the force of the pile body can be calculated and analyzed. [0003] Different from rigid piles, flexible piles such as gravel fly ash piles, screw piles, etc., due to the small diameter of the pile body, and...

AI Technical Summary

Problems solved by technology

However, if the concrete strain gage is buried by spraying cement slurry drilling in ordinary concrete structures, it may cause changes in the concrete mix ratio

At the same time, the device has a large volume and is not suitable for embedding concrete strain gauges of flexible piles with small pile diameters.

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