Pile-soil interface three-axis model testing device under condition of seepage

A technology of test equipment and contact surface, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problem of undiscovered triaxial model test equipment for pile-soil contact surface, and achieve good repeatability

Active Publication Date: 2014-11-26
SHANGHAI JIAO TONG UNIV
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  • Abstract
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Problems solved by technology

Retrieval of existing technical literature has not found any triaxial model test equipment for the study of pile-soil contact surface under seepage conditions

Method used

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  • Pile-soil interface three-axis model testing device under condition of seepage

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Embodiment Construction

[0022] figure 1 A specific embodiment of the pile-soil contact surface triaxial model test equipment under this seepage condition of the present invention is shown, and the equipment includes:

[0023] A triaxial confining pressure chamber with a pile-soil sample 1 arranged therein, the pile-soil sample 1 has a contact surface between the pile body and the soil body,

[0024] A vertical loading and unloading platform for shear stress loading on the contact surface (shear stress refers to the stress along the contact surface direction),

[0025] The shear stress of the confining pressure control system loaded with the normal stress of the contact surface (the normal stress refers to the stress perpendicular to the direction of the contact surface),

[0026] Seepage control system for controlling internal seepage parameters of pile-soil sample 1,

[0027] And a data collection system for collecting deformation data of the pile-soil sample 1 in the triaxial confining chamber. ...

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Abstract

The invention discloses a pile-soil interface three-axis model testing device under a condition of seepage. The pile-soil interface three-axis model testing device comprises a three-axis confining pressure chamber, a vertical loading and unloading platform, a confining pressure control system, a seepage control system and a data acquisition system, wherein a pile-soil sample is arranged in the three-axis confining pressure chamber and has an interface between a pile body and a soil body; the vertical loading and unloading platform is used for loading tangential stress to the interface; the confining pressure control system is used for loading normal stress to the interface; the seepage control system is used for controlling seepage parameters in the pile-soil sample; and the data acquisition system is used for acquiring deformation data of the pile-soil sample in the three-axis apparatus confining pressure chamber. The pile-soil interface three-axis model testing device under the condition of seepage is capable of more conveniently studying stress characteristics of the pile-soil interface of the soil body under the action of coupling the seepage and the complex stresses.

Description

technical field [0001] The invention relates to a triaxial model test instrument in the technical field of geotechnical tests, in particular to a triaxial model test device for a pile-soil contact surface under seepage conditions. Background technique [0002] Excavation and dewatering of the foundation pit will affect the mechanical characteristics of the pile at the bottom of the pit. Studying the interaction mechanism of the pile-soil contact surface under the coupling action of seepage and complex stress changes in the soil is helpful for in-depth understanding and evaluation of the performance and performance of the pile at the bottom of the pit. Safety situation, and can guide the actual project. [0003] At present, the methods to solve this problem mainly include model method, monitoring method and indoor test method. The model method needs to establish soil seepage field and stress field models, with many parameters and heavy workload, and it needs to be verified b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/00
Inventor 陈锦剑王建华邬俊杰
Owner SHANGHAI JIAO TONG UNIV
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