Self-balancing soil frost heaving test device and test method thereof

Abstract

The invention discloses a self-balancing soil frost heaving double-barrel test device and a test method of the test device. The device comprises an inner barrel and an outer barrel, wherein a top plate is arranged at the top end of the inner barrel; holes are reserved in the centers of the top plate and bottom plates of the barrels; an anchor rope dynamometer channel equivalent to the diameter of each hole is arranged in a centering manner; an anchor rope dynamometer is connected with an acquirer by a lead wire; five temperature measurement pipes are reserved in corresponding height positions of inner and outer barrel walls in height directions of barrel bodies; five outer water replenishment ports are uniformly formed in a perimeter direction in the outer barrel walls close to the bottoms of the barrels; water replenishment pipeline terminals connected with the outer water replenishment ports are connected with a water pressure tank with constant volume; inner exhaust ports are reserved in the bottom plate of the inner barrel; outer drainage ports are reserved in the bottom plate of the outer barrel, and provided with valves; the bottoms of the barrels are embedded into a fixed support; and four bolt holes are formed in the fixed support. The test device is simple in structure, convenient to operate and wide in application scope, and requires no separate pressure device.

Description

technical field [0001] The invention relates to a frost heave test device and a test method, in particular to a self-balancing soil frost heave test device for performing a frost heave test on soil, and a test for performing a frost heave characteristic test on soil using the test device method. Background technique [0002] Permafrost is a kind of soil rock with a temperature below 0 ℃ and containing ice. According to the duration of the frozen state, frozen soil can be divided into three categories, namely instantaneous frozen soil, seasonal frozen soil and permafrost. Seasonally frozen soil is widely distributed in all continents of the world and most of China's land. In my country, seasonally frozen soil accounts for 53.5% of the country's land area. A large number of engineering practices and research results at home and abroad have shown that frost heave is an important cause of frost damage in various projects in seasonally frozen soil areas, especially for linear p...

AI Technical Summary

Problems solved by technology

On the one hand, reduce the use quality of railways, highways and other projects, and reduce their service life

On the other hand, the subgrade deformation caused by frost heaving will seriously affect the safe operation of railways and highways, bring huge economic losses, and have a negative impact on society

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