Engineering soil frost heaving force testing device

Abstract

The invention belongs to an engineering soil frost heaving amount testing device, in particular to an engineering soil frost heaving force testing device. A cubic copper box body is formed by a pure copper plate; a copper box cover formed by a pure copper plate is hinged on the upper opening of the copper box body through an arranged hinge base; long-strip-shaped water permeable holes are evenly distributed in the four walls, the bottom face and the copper box cover of the copper box body respectively and formed in the inner walls of the six faces of the closed copper box body. Crisscrossed patterns are respectively arranged along the center line of the inner wall of each surface; the resistance strain gauge is positioned in the center of the inner wall; the axes of the resistance strain gauges arranged on the corresponding inner walls of the closed copper box body are perpendicular to each other, the copper box body is filled with a soil material which is the same as an engineering soil body, two-layer filling and layered tamping are carried out, an electric thermometer is buried in the copper box body, and cables of the resistance strain gauges are led out of the water permeableholes to be connected with the reading instrument. The device is reasonable in structure, reliable in performance, capable of measuring the frost heaving force of engineering soil in the three-dimensional direction, high in measurement precision, good in durability, free of influences of low temperature and water and soil environment corrosion and convenient to install and use.

Description

technical field [0001] The invention belongs to a test device for the frost heaving force of engineering soil, in particular to a test device for the frost heave force of engineering soil. Background technique [0002] At present, foundation projects such as earth dams and canal embankments in cold or severe cold regions, when the water content of dams, canal embankments, etc. are high, and in low temperature seasons, the soil will all experience frost heave, resulting in soil foundation and superstructure The damage will affect the normal use of the project, so that the project has to spend time and money every year on basic drainage, replacement, superstructure repair and other maintenance work. Therefore, accurate measurement of the frost heave force of engineering soil plays an important role in solving the problem of engineering foundation frost heave. Contents of the invention [0003] The purpose of the present invention is to provide a test device for engineering ...

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Problems solved by technology

[0002] At present, foundation projects such as earth dams and canal embankments in cold or severe cold regions, when the water content of dams, canal embankments, etc. are high, and in low temperature seasons, the soil will all experience frost heave, resulting in soil foundation and superstructure Damage, affecting the normal use of the project, so that the project has to spend time and money on basic drainage, replacement, superstructure repair and other maintenance work every year

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