Test device for rapidly testing soil strength and permeability coefficient by simulating freeze-thaw cycle

A freeze-thaw cycle and permeability coefficient technology, applied in the field of soil mechanics and geotechnical engineering, can solve the problems of lack of basis for test results, failure to consider lateral friction resistance, inability to seepage, etc., to reduce the test process, eliminate errors, and save time. Effect
CN108760601AActive Publication Date: 2018-11-06QINGDAO TECHNOLOGICAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
QINGDAO TECHNOLOGICAL UNIVERSITY
Publication Date
2018-11-06

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Abstract

The invention discloses a test device for rapidly testing soil strength and permeability coefficient by simulating a freeze-thaw cycle, and relates to the technical field of soil mechanics and geotechnical engineering. The test device comprises a box body and a sample box, wherein the sample box is arranged inside the box body; and the test device further comprises a measurement system used for measuring various physical and mechanical parameters of soil, a freeze-thaw cycle system used for providing temperature control for a freeze-thaw process of a soil sample, and a displacement control system used for horizontal and vertical precise movement of each sensor. The test device has the benefits that a micro-static probe can measure the penetration resistance of a soil taper tip, and a crossshear plate can measure the undrained shear strength and shear modulus of the soil sample; and by analyzing the relationship between the undrained shear strength and the shear modulus of a specific soft soil sample through tests, the most simple and feasible solution for calculating the shear strength of the on-site soil by a static penetration test can be provided.
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Description

technical field

[0001] The invention relates to the technical fields of soil mechanics and geotechnical engineering, in particular to a test device for quickly testing soil strength and permeability coefficient by simulating freeze-thaw cycles. Background technique

[0002] my country is a country where expansive soils are widely distributed. A large number of construction sites are located in expansive soil distribution areas. After expansive soils are frozen at low temperature and melted at room temperature, various parameters of the soil will change greatly.

[0003] In the past, when testing the basic strength and deformation characteristics of the soil, only a single index of the soil can be tested each time, such as the compressive modulus of the soil, the undrained strength of the clay, the side friction resistance, the shear strength or the shear modulus. etc. There is no test equipment for the comprehensive measurement of multiple parameters for the same sample. ...

Claims

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