Temperature-controlled consolidation pressure chamber system

Abstract

A temperature-controlled consolidation pressure chamber system for thermal consolidation tests on cylindrical specimens of saturated soil. The side wall (6) of the temperature-controlled consolidation pressure chamber is a hollow structure made of stainless steel. The cylindrical electric heating plate (8) of the pressure chamber is embedded in the side wall of the pressure chamber. The two ends of the resistance wire of the cylindrical electric heating plate in the pressure chamber Connect with temperature regulator (18). The thermocouple (1) in the pressure chamber is installed on the top cover of the pressure chamber, one end of which is placed in the pressure chamber filled with water, and the output end is connected with the temperature regulator. The sample drainage pipe, the pore water pressure measuring pipe, and the surrounding pressure connecting pipe are all made of stainless steel. The middle section is a spiral structure, and the spiral structure is placed in a constant temperature water container. The sample drainage pipe drawn from the constant temperature water container is connected to the volume change pipe, the pore water pressure measurement pipe is connected to the pore water pressure measurement system, and the surrounding pressure connection pipe is connected to the pressure stabilizing and regulating system. It can meet the needs of the thermal consolidation test of saturated soil samples under the action of changing temperature load, and can be used to accurately measure the thermal consolidation deformation of saturated soil samples.

Description

technical field [0001] The invention relates to a temperature-controlled consolidation pressure chamber system used for the thermal consolidation test of saturated soil cylindrical samples in geotechnical engineering, which is used to measure the thermal consolidation deformation of the sample under the coupled action of changing temperature load and external force load and triaxial shear strength. Background technique [0002] At present, when carrying out conventional (i.e. normal temperature, isothermal conditions) consolidation tests on saturated soil cylindrical samples, it is impossible to control the rising or falling temperature changes (i.e. temperature load) in the pressure chamber as required. That is to say, conventional consolidation tests can only analyze the consolidation and shear characteristics of soil samples at room temperature, but cannot measure and control the consolidation of soil samples under high temperature (such as 20-100°C) and changing temperat...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defect that the existing conventional triaxial consolidation pressure chamber cannot carry out high temperature and variable temperature load tests, and to provide a temperature-controlled consolidation pressure chamber system with high sensitivity, which can satisfy Needs for Thermal Consolidation Test of Saturated Soil Specimen

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