Temperature-control consolidation pressure chamber system

Abstract

The invention relates to a temperature-controlled consolidation pressure chamber system used in thermal consolidation test of a saturated soil cylinder sample. Side walls (6) of the temperature-controlled consolidation pressure chamber are of empty-cavity structures made of stainless steel; cylinder thermal plates (8) are embedded in the side walls; the two ends of resistance wires of the cylinder thermal plates (8) of the pressure chamber are connected with a temperature controller (18); an electric couple (1) is arranged at the top cap of the pressure chamber, one end of the electric couple is arranged in the pressure chamber which is full of water and the output end is connected with the temperature controller. Sample water drain pipes, pipes for measuring pore water pressure and ambient pressure connection pipes are made of stainless steel and the middle sections take a shape of a spiral arranged in a water receptacle with a constant temperature; the sample drain pipe coming out of the water receptacle is connected with a pipe for detecting leakage of sample; the pipes for measuring pore water pressure are connected with a pore water pressure measuring system; the ambient pressure connection pipes are connected with a pressure regulating system. The system can satisfy the requirements of the saturated soil sample consolidation test under the action of loading at the changing temperature, thus the system can test the thermal consolidation deformation of the saturated soil sample accurately.

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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