Pile foundation bearing characteristic model test device and method under complicated load effect

Abstract

The invention discloses a pile foundation bearing characteristic model test device under a complicated load effect. The pile foundation bearing characteristic model test device comprises a model groove, a horizontal loading system, a vertical loading system and a measuring device. The model groove is made of an organic glass panel and is reinforced by channel steel. The horizontal loading system is composed of a pulley and a weight. The vertical loading system is composed of vertical channel steel, a counter-force beam, a lifting jack and a linear sliding guide rail. The measuring device comprises a minitype laser displacement sensor system which is used for measuring the horizontal displacement of a pile head and the sedimentation of a pile tip and can horizontally move along with the moving of the pile head. The measuring device further comprises a pull rope displacement sensor system which measures the horizontal displacement of a pile body. The invention further discloses the test method of the pile foundation bearing characteristic model test device. According to the pile foundation bearing characteristic model test device and method, loading is simple, the load direction is stable, the data of pile sedimentation, pile head horizontal displacement, pile body horizontal displacement and the like of a model can be accurately measured, the measured data is high in precision, and pile foundation bearing characteristic model test research under the complicated load effect can be conducted conveniently and effectively.

Description

technical field [0001] The invention relates to a pile foundation model test device and a test method, in particular to a pile foundation bearing characteristic model test device and a test method under complex loads. Background technique [0002] As a foundation treatment technology, pile foundation has the advantages of wide application range, fast construction speed, and good reinforcement effect. It is widely used in foundation treatment engineering fields such as highways, railways, ports, airports, and housing construction. While the pile foundation is subjected to the vertical load generated by the superstructure, it will also be subjected to the horizontal load generated by wind, earthquake, water, vehicles, etc. Research on the bearing characteristics of pile foundation under vertical-horizontal coupled load is one of the important topics that researchers pay attention to. This model test device is required to carry out the influence of vertical load on the bearing...

AI Technical Summary

Problems solved by technology

[0004] The traditional pile foundation model test device has a single loading direction and does not need to consider the interaction between loads in different directions during the loading process

In the existing pile foundation model test device, the vertical load will deflect as the horizontal load is applied during the test, and the measurement is inaccurate; there is no measuring instrument for the horizontal displacement of the pile body, and the horizontal displacement of the pile body is mostly obtained by linear interpolation. The results may not accurately reflect the actual situation

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