Self-balance soil body frost heaving amount testing device and testing method

Abstract

The invention discloses a self-balance soil body frost heaving amount testing device and a testing method. The device is commonly composed of an upper bucket body and a lower fixed support. The upperbucket body is commonly formed by two layers including inner and outer walls made of transparent polyethylene and the inner wall and the outer wall are tightly stuck together and do not slide oppositely. The inner surface of the inner wall of the bucket body is smooth and the outer surface of the inner wall of the bucket body is relatively rough. The outer surface of the outer wall of the bucket body is of a spiral corrugated shape and the surface of the outer surface is smooth; a spiral steel wire is wound in a wave trough of a corrugated tubular product of the outer wall of the bucket body;the steel wire and the outer wall can slide relatively. A top plate and a bottom plate of the upper bucket body are made of organic glass materials with light weight and high strength; the lower fixedsupport is made of an alloy material with light weight and high strength. The testing device disclosed by the invention is simple in structure; an independent pressurizing device is not needed; the self-balance soil body frost heaving amount testing device is convenient to operate and has a wide application range.

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 testing the frost heave test of the soil, and using the test device to test the frost heave test of the soil The test method for the test. 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...

AI Technical Summary

Problems solved by technology

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 projects such as railways and highways. The damage will be more severe, affecting the use quality of railways, highways and other projects and reducing their service life

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