Physical model test equipment and method for stimulating foundation pit excavation

Abstract

The invention discloses physical model test equipment and method for stimulating foundation pit excavation. The equipment comprises a model box, a lining component, a liquid bag and a gas bag, whereina model material is embedded into the model box; a foundation pit suitable for placing the lining component is formed in the upper surface of the model material; the lining component is concave, anda concave hole of the lining component is upwards formed in the foundation pit of the model box; the liquid bag is arranged in an inner cavity of the lining component, and the gas bag is arranged between the liquid bag and the lining component; the gas bag is of a concave structure, the shape of the outer edge of the gas bag is adaptive to the shape of the inner cavity of the lining component, andthe shape of the outer edge of the liquid bag is adaptive to the shape of the inner edge of the gas bag; when the liquid bag is filled up with liquid through a liquid inlet tube, the whole sunken space of the gas bag can be filled up; and when the gas bag is filled up with gas through a gas inlet tube, the whole gap between the liquid bag and the lining component can be uniformly filled up. The equipment can realize indoor foundation pit excavation stimulation, and provides a powerful test tool for a geotechnical engineering indoor model test.

Description

technical field [0001] The invention relates to a physical model test device for simulating foundation pit excavation, belonging to a physical model test device capable of truly simulating structural internal force changes and soil deformation during foundation pit excavation in the field of geotechnical engineering. Background technique [0002] With the rapid development of our country's economy, our country's highways, buildings and water conservancy constructions are also booming. The foundation pit project needs to be paid attention to by all projects, because the instability of the support structure often brings disastrous consequences to the construction. . The construction of the project is inseparable from the indoor test, especially the indoor model test can simulate the stress and deformation during the construction and use of the project by reducing the scale of the components, which is very important for the stability and applicability of the project after it ...

AI Technical Summary

Problems solved by technology

[0003] Technical problem: The purpose of the present invention is to design a device that can truly simulate the excavation of the foundation pit for the large disturbance of the existing foundation pit excavation simulation and the inability to truly simulate the excavation process

Images