Engineering soil frost heaving amount testing device

Abstract

The invention discloses an engineering soil frost heaving amount testing device. A rubber cover plate is hinged to the upper opening of the box body of a cubic rubber box body through an arranged hinge base. Water permeable groove holes are uniformly distributed in the four walls, the bottom surface and the rubber cover plate of the rubber box body respectively; 3-6 crisscrossed combined lead typedisplacement meters assembled with rotary micrometer deformers in a combined manner are respectively arranged along the center line of the inner walls of the six inner walls of the closed rubber boxbody in the three-dimensional direction; one combined lead type displacement meter is fixedly arranged on the inner wall of each surface; the combined lead type displacement meters fixedly mounted onthe corresponding inner walls of the closed rubber box body are arranged in a criss-cross manner; the inner wall of the rubber box body is filled with soil materials which are the same as engineeringsoil body filling in a two-layer mode, layered compaction is conducted, an electric thermometer is buried in the rubber box body, and the cable of the combined lead type displacement meter is led outof the water permeable groove hole to be connected with a reading instrument. The device is reasonable in structure, reliable in performance, capable of measuring the frost heaving amount of engineering soil in the three-dimensional direction, high in measurement precision, good in durability, free of low-temperature influence and convenient to install and use.

Description

technical field [0001] The invention belongs to a test device for the frost heave amount of engineering soil, in particular to a test device for the frost heave amount 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 amount of frost heave of engineering soil plays an important role in solving the problem of frost heave of engineering foundation. At present, the instruments and devices for frost heaving of engineering soil are all fixed on the basis of bed...

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Problems solved by technology

At present, the instruments and devices for frost heaving of engineering soil are all fixed on the basis of bedrock, and are composed of displacement meters, tie rods, surface plates, etc., which can only test the frost heave deformation of soil relative to bedrock, and cannot realize the deformation of soil. Three-dimensional frost heave test

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