Thermal consolidation pressure room of hollow column sample

Abstract

The invention discloses a thermal consolidation pressure room of a hollow column sample, relating to a thermal consolidation pressure room of a saturated soil sample, which is used for testing thermal consolidation deformation amount of the sample under the condition that the internal and the external temperatures change. The thermal consolidation pressure room solves the disadvantage that the thermal consolidation experiment cannot be carried out by a traditional thermal consolidation pressure room under the condition of coupling change of internal and external temperatures of the sample. A column sample (15) in the pressure room is a hollow column sample and a hot rod (16) is arranged in the hollow part of the column sample; a temperature sensor (14) is arranged on the hot rod; a lead of the hot rod and the lead of the temperature sensor are connected with a sample centre temperature controller (25); one end of an axial pressure rod (3) is connected with a screw socket in a sample cap and the other end of the axial pressure rod (3) is connected with a nut; a second O-shaped rubber pad sealing ring (9) is arranged between a middle section column part and a hole on a top cover (4) of a pressure room; a sample drainage pipe led from the pressure room is connected with a volume changing tube; and a hole water pressure measuring pipe is connected with a hole water pressure measuring system, and an ambient pressure connection pipe is connected with an ambient pressure measuring system.

Description

technical field [0001] The invention relates to a thermal consolidation pressure chamber used for saturated soil samples in geotechnical engineering, which is suitable for measuring the thermal consolidation deformation of the sample under the condition of internal and external temperature changes of the sample. Background technique [0002] In the 2011 issue of "Journal of Geotechnical Engineering", "A thermal consolidation test device for saturated soil and its application", the test device includes: pressure chamber thermocouple, axial pressure rod, pressure chamber top cover , Upper permeable stone, sample cap, lower permeable stone, pressure chamber wall, pressure chamber base, temperature controller, sample drain pipe, pore water pressure measuring pipe, surrounding pressure connecting pipe. [0003] Place the heat-insulating ceramic plate, the lower permeable stone, and the cylindrical sample on the boss in the middle of the base of the pressure chamber in sequence, a...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defect that the existing thermal consolidation pressure chamber cannot carry out the thermal consolidation test under the condition that the internal temperature of the sample and the external temperature are coupled and changed, and to provide a hollow cylindrical sample thermal consolidation pressure chamber

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