Microscopic simulation device for deep side wall friction resistance of foundation pile

Abstract

The invention relates to a microscopic simulation device for deep side wall friction resistance of a foundation pile. Liquid is introduced into a pressurizing bag through a pressurizing opening, and the pressurizing bag pressurizes a soil body model, so that the stress level of a deep soil body is effectively simulated; and the stress of the soil body model and the stress of a foundation pile model can be monitored in real time, and the foundation pile model is convenient to replace. The microscopic simulation device can be used for model tests of ultra-long foundation piles, under the condition that the size of the model is reduced, the micro deformation of the model can be effectively captured, and the stress loss of the soil body of the model is avoided; and the stress state of the soil body around the real deep pile can be simulated in a small-size model box. The microscopic simulation device can be combined with a geotechnical engineering PIV technology, and can effectively capture and analyze the micro deformation.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a microscopic simulation device for frictional resistance of deep side walls of foundation piles. Background technique [0002] Pile foundation is a common foundation form, which is widely used in high-rise buildings, expressways, highways, ports, offshore platforms and other projects. The higher the complexity of the project, the higher the requirements for the pile foundation, and the ultra-long foundation piles came into being. [0003] Field tests or model tests are often used to study super-long foundation piles; however, both test methods have corresponding deficiencies, as follows: [0004] In the field test of ultra-long foundation piles, due to the influence of pile length and buried depth, it is difficult to guarantee the survival rate of the embedded components in the test, the test is difficult and the input cost is high; [0005] In the model test ...

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Problems solved by technology

[0004] In the field test of ultra-long foundation piles, due to the influence of pile length and buried depth, it is difficult to guarantee the survival rate of the embedded components in the test, the test is difficult and the input cost is high;

[0005] In the model test of ultra-long foundation piles, the reduction of model size will make it difficult to capture the small deformation of the model and the stress loss of the model soil, and the model box cannot simulate the stress state of the real deep pile surrounding soil due to its size

[0006] In the existing technology, there is a lack of technical solutions to realize the effective simulation of the stress level of the soil around deep piles in the ultra-long foundation pile scaled-scale model experiment, and at the same time satisfy the capture of small deformations to the greatest extent.

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