Two-dimensional pile-soil interaction test system and test method based on piv technology

Abstract

The invention relates to a two-dimensional pile soil interaction experiment system based on PIV technology and an experiment method. The system comprises a two-dimensional vibration generating structure capable of controlling vibration force amplitude and vibration frequency, and the two-dimensional vibration generating structure is arranged on a plane; the system further comprises a data collecting and processing module applying PIV technology and in communication connection with the two-dimensional vibration generating structure through a data line. By the system and the method, vibration frequency, force amplitude, pile foundation rigidity, pile foundation buried depth, soil saturation and uniformity can be changed directly or indirectly, and impact of the above factors on soil movementcan be researched; soil particle movement process can be measured by adopting a noncontact way without damaging undisturbed soil.

Description

technical field [0001] The invention relates to a two-dimensional pile-soil interaction test system and test method based on PIV technology, and belongs to the technical field of indoor model test equipment for the dynamic characteristics of offshore fan pile foundation structures. Background technique [0002] Wind energy has huge reserves, wide distribution, renewable, less pollution, and broad development prospects. my country's total wind energy reserves are about 3.226 billion kW, of which about 1 billion kW of wind energy can be developed. From the perspective of wind energy sources, wind energy can be divided into onshore wind energy and offshore wind energy. Among them, offshore wind energy has larger reserves than land wind energy resources, does not occupy cultivated land, and has less noise pollution. In recent years, under the background of promoting sustainable development, my country's offshore wind power projects are steadily advancing with the substantial i...

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Problems solved by technology

In addition, at present, for this kind of test observation, the pile foundation can only be removed after the vibration is over, and the soil layer is cut open. On the one hand, this will easily disturb the undisturbed soil and affect the test results. On the other hand, this method can only observe The two states of the soil before and after the vibration of the pile foundation cannot study the movement of soil particles during the vibration

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