Progressive dry-wet cycle test device and use method

Abstract

The invention discloses a progressive dry-wet cycle test device, comprising a water supply container, a soil column system and a ventilation system, wherein the soil column system is connected with the water supply container, and the ventilation system is connected with the soil column system. The water supply container includes a concentrically arranged water container and the circulating water container, the soil column system includes a base, a bottom layer and several standard layers connected together, and the ventilation system includes Breathing tube with vent holes. The invention also discloses the use method of the test device. Through the above-mentioned test device and its use method, the dry-wet cycle method is in line with the actual working conditions of the project, and the accuracy of the test results is improved. The soil sample and its shear strength parameters are obtained, and the ventilation through holes are set on the wall of the ventilation pipe and the wall of the standard layer, which shortens the cycle of drying and wetting.

Description

technical field [0001] The invention relates to the technical field of soil dry-wet cycle test, in particular to a progressive dry-wet cycle test device and a use method. Background technique [0002] The city walls or roadbeds are exposed to the natural environment after the completion of construction. Under the action of various natural external forces, the soil quality deteriorates and the strength decreases, which in turn affects the long-term stability of the city walls or roadbeds. Among them, the dry-wet cycle is the most significant and prominent. . Therefore, the research on the physical and mechanical properties of soil due to the dry-wet cycle has naturally become the focus of attention in the academic and engineering circles. Current studies all believe that the dry-wet cycle path and the method of dry-wet cycle have great influence on the test results. [0003] The dry-wet cycle method is mainly through the preparation of ring-knife samples or triaxial samples...

AI Technical Summary

Problems solved by technology

However, due to the large volume of the soil column, the long dry-wet cycle period, and the large number of soil columns required by the conventional dry-wet cycle method, its application is seldom.

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