Electromagnetic loading test device capable of simulating sinking process of open caisson

Abstract

The invention relates to the technical field of geotechnical engineering and geotechnical physical simulation tests, and provides an electromagnetic loading test device capable of simulating the sinking process of an open caisson. The device comprises a test box, a soil paving device, a semi-open caisson model, a jacking device, an anti-deviation device, an electromagnetic loading device, a sand pumping device and a high-speed camera. The test device can be used for quickly and uniformly paving different types of test soil bodies, applying a constant load to the semi-open caisson model in thetest, accurately controlling the soil sampling rate, strictly simulating the open caisson heightening and sinking process according to the symmetry principle, preventing the open caisson from laterally deflecting, and automatically recording data such as the movement track and the interaction force of the open caisson and the soil bodies. Compared with the prior art, the device can achieve stepless loading, accurately simulate the open caisson heightening process, apply loads through field force, truly simulate the gravity of the open caisson in the actual working condition, and avoid additional constraints on the open caisson.

Description

technical field [0001] The application relates to the technical field of geotechnical engineering and geotechnical physical simulation tests, in particular to an electromagnetic loading test device for simulating the sinking process of caissons. Background technique [0002] With the development of large foundations such as caissons in the direction of ultra-large and ultra-deep, considering the greater water depth and more complex geological conditions, large-scale caissons will face sudden settlement, partial settlement, sand foundry and difficult settlement during the construction of large-scale caissons. A series of problems, how to ensure the smooth sinking of large caissons and reach the predetermined depth is the key to its construction. [0003] To study various problems faced in the construction of large-scale caisson foundations connected to heights, field monitoring methods are often used to obtain data such as sinking curves, caisson postures, and earth pressures...

AI Technical Summary

Problems solved by technology

The overall concrete caisson model test cannot simulate the process of caisson subsection and heightening, nor can it reflect the similar relationship with the real construction conditions; and the reaction load will create additional constraints on the top of the caisson model, changing the real caisson load. power situation

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