Self-balancing buried pipeline and soil interaction test device

Abstract

The self-balancing buried pipeline-soil interaction test device is suitable for the simulation research of the pipe-soil interaction test when the buried pipeline and the soil around the pipeline undergo relative displacement. The device is mainly composed of five parts: box body, pipeline, reaction frame, sensor system and actuator. The baffle is loaded horizontally to drive the steel strand and the pipe at one end of the steel strand to move relative to the soil, and the vertical actuator is loaded vertically on the rigid backing plate laid above the test soil to simulate a large buried depth. The device can consider the influence of various factors such as soil quality, burial depth, pipe diameter, pipe material, and water content on the pipe-soil interaction, and can promote a clearer understanding of the characteristics of the pipe-soil interaction.

Description

technical field [0001] The invention relates to an interaction test simulation device between buried pipelines and soil Background technique [0002] As one of the important channels for water, electricity and energy supply, buried pipelines have the characteristics of wide distribution and long transportation distances. Pipelines inevitably pass through complex geological conditions, such as faults, landslides, and subsidence areas. The development of such unfavorable geology will cause the relative displacement between the pipe and soil, and the interaction between pipe and soil will also become severe, which is very likely to cause large deformation or even damage of the pipeline, threatening the normal operation of the buried pipeline. Nowadays, there are not many experimental studies on the interaction between buried pipelines and soil, especially in the case of large relative displacement and large buried depth between the pipe and soil. It is undeniable that the rese...

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Problems solved by technology

The development of such unfavorable geology will cause the relative displacement between the pipe and soil, and the interaction between the pipe and soil will become severe, which is very likely to cause large deformation or even destruction of the pipeline, threatening the normal operation of the buried pipeline

Nowadays, there are not many experimental studies on the interaction between buried pipelines and soil, especially in the case of large relative displacement and large buried depth between the pipe and soil. It is undeniable that the research method of numerical simulation is reasonable to a certain extent. However, this method has made a considerable degree of simplification on key issues such as the dispersion of equations, constitutive relations, and contact forms. The accuracy of the results is as good as The authenticity needs to be verified or even corrected in the test model, so test simulation is an essential part of the research work on the interaction between buried pipelines and soil

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