Energy pile bearing performance test device and operation method thereof

Abstract

The invention discloses an energy pile bearing performance test device. The device comprises a counter-force system, a loading system, an energy control system, a pile-soil system and a measurement and collection system. According to the collection system, the energy changing process of an energy pile and soil around the pile as well as the interaction and deformation characteristics of the pile and the soil can be visually observed, and tests on the bearing performance and the deformation characteristics of the pile, the physical and mechanical state changes and the deformation characteristics of the soil around the pile and the like in the energy changing process of the energy pile and soil body can be performed. Indoor tests for different soil bodies and different drainage working conditions can be carried out, and geotechnical centrifuge tests can also be carried out. Conventional indoor tests and geotechnical centrifuge tests such as pile-soil interaction between energy piles or between conventional pile and energy soil (frozen soil or geothermal soil or soil layers with different temperatures in deep foundations) under the action of combined load, single load, cyclic load andcombined cyclic load can be implemented.

Description

technical field [0001] The invention relates to an energy pile bearing performance test device. The present invention also relates to an operation method of the energy pile bearing performance test device. Background technique [0002] The research on energy piles is currently extensive, and there are two main research directions: one is active energy harvesting piles, that is, through setting water pipes in the piles and establishing water circulation above the land, thereby exchanging heat with the ground, if the geothermal energy is developed If it is in a conventional area, cooling water can be obtained due to the low underground temperature; secondly, in cold areas, especially permafrost areas, since the pile foundation may be in the process of cyclic loading, This repeated pile-soil friction may increase the heat between the pile and soil, which will affect the permafrost environment around the pile, lead to the destruction of the frozen state of the soil around the p...

AI Technical Summary

Problems solved by technology

[0002] The research on energy piles is currently extensive, and there are two main research directions: one is active energy harvesting piles, that is, through setting water pipes in the piles and establishing water circulation above the land, thereby exchanging heat with the ground, if the geothermal energy is developed If it is in a conventional area, cooling water can be obtained due to the low underground temperature; secondly, in cold areas, especially permafrost areas, since the pile foundation may be in the process of cyclic loading, This repeated pile-soil friction may increase the heat between the pile and soil, which will affect the permafrost environment around the pile, lead to the destruction of the frozen state of the soil around the pile, change the mechanical state of the soil around the pile, and reduce the load-bearing performance of the pile.

In the above two cases, it is necessary to carry out research on energy piles, but there is a lack of relevant test equipment, especially indoor test devices

Images