Test device for simulating washing and bearing coupled characteristic of underwater pile foundation

Abstract

The invention relates to a test device for simulating the washing and bearing coupled characteristic of an underwater pile foundation, which comprises a loading water tank, a horizontal limiting pulley, a loading bracket, a loading support, a rolling device and a wave water tank, wherein the loading water tank is connected with a surrounding enclosing rigid wall through the horizontal limiting pulley; the loading water tank can move up and down freely; and the whole vertical loading device can be fixed on the side wall of the wave water tank by a horizontal carrying bracket and by a bolt. Compared with the prior art, the device has the advantages that: various regular and irregular waves can be generated by a wave generator in the wave water tank; different vertical carrying forces can be simulated by changing the volume of water in the loading water tank in the vertical loading device; the loading can be adjusted by multiple stages, the coupling function of washing and axial loading is realized; and the lateral deformation, bending moment and soil pressure of all foundation piles of a single or group pile foundation under washing action can be well simulated.

Description

technical field [0001] The invention relates to a model test device, in particular to a test device for simulating the scouring and bearing coupling characteristics of underwater pile foundations. Background technique [0002] With the gradual realization of the modernization of industry, agriculture, national defense and science and technology, many roads, railways and bridges have been built in our country. There are many accidents caused by bridge scouring, which has caused great losses to the national economy. How to deal with the scouring and axial load It has become a difficult problem to be solved urgently in the field of civil engineering construction to analyze the bearing behavior of the underwater pile foundation under the coupling effect. However, there is still a lack of practical and effective analysis methods at home and abroad. The analysis of such problems is usually based on engineering experience estimation, which is very blind. In order to make up for th...

AI Technical Summary

Problems solved by technology

However, there is still a lack of practical and effective analysis methods at home and abroad, and the analysis of such problems is usually based on engineering experience estimation, which has great blindness

In order to make up for the limitations of theoretical analysis, for important projects, it is necessary to conduct analysis in combination with indoor model tests, the key technology of which is how to simulate the coupling effect of scour and axial load, and no reports on this issue have been found so far

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