Evaluation method of anti-slide performance of rigid connection structure of simulated micropile

Abstract

The invention discloses an evaluation method of anti-slide performance of a rigid connection structure of a simulated micropile. The method comprises the steps of pasting a strain gauge on a pile bodyof each simulated micropile; setting a pressure cell on a soil-backing side and a soil-facing side of each simulated micropile; setting a displacement sensor in a slide bed soil mass; electrically connecting the strain gauge, the pressure cell and the displacement sensor to an external processor; simultaneously applying a vertical load step by step on a slope top of the slide bed and a top of therigid connection structure of the simulated micropile; acquiring a displacement of the pile top, a bending moment of the pipe body, the front and back soil pressures of the pipe body of the rigid connection structure of the simulated micropile by the processor; performing a numerical simulation calculation by finite difference software FLAC3D; and, acquiring an optimal top load of the rigid connection structure of the simulated micropile by the software analysis under the working condition the same with the physical simulation experiment. The optimal load of the top of the rigid connection structure is measured by the rigid connection structure of the simulated micropile.

Description

【Technical field】 [0001] The invention belongs to the field of landslide prevention and control, and in particular relates to an evaluation method for the anti-skid performance of a simulated micro pile rigid connection structure. 【Background technique】 [0002] There are many mountainous areas in our country, and some areas are prone to collapse, cracking, and various landslide disasters after the construction of railways or highways. At present, landslide treatment technologies commonly used in China, such as anti-slide piles and prestressed anchor cables, have their own limitations. limitation. Anti-sliding piles often use manual excavation of foundation pits to deal with landslides, the workload of concrete casting is large, the construction on steep slopes is very difficult, and there are potential safety hazards. When the groundwater level is high, the construction cost is high and the construction period is not easy to control; Stressed anchor cables need to be stret...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for evaluating the anti-skid performance of a simulated micro-pile rigid connection structure to measure the optimal load on the top of a simulated micro-pile rigid connection structure

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