Simple device for fast consolidation experiment of soil samples with different water contents in field

Abstract

The invention discloses a simple device for fast consolidation experiment of soil samples with different water contents in a field. The simple device comprises a base, a pressure chamber and a water control system, wherein the pressure chamber is fixed to the base; the upper part of the pressure chamber is provided with a sealing cover; the middle part of the pressure chamber is provided with a middle-axis pressure transfer rod capable of sliding. The experimental device disclosed by the invention is compact and portable, and can reasonably carry out stress loading; compression coefficients under different vertical pressures and different water contents can be quickly measured in the field, thereby avoiding the carrying of soil samples in indoor tests, lowering the test cost, and compensating for the insufficient number of test samples; moreover, the optimal water content satisfying the engineering economy and safety can be resolved according to test results; especially in a soil replacement pad layer method, the amount of soil replacement can be controlled to the maximum extent, the construction cost is lowered to a certain extent, and data support can be provided for regional engineering construction work.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a simple device for quickly performing consolidation experiments on soil samples with different water contents in the field. Background technique [0002] In engineering practice, the compressibility of soil is very important to judge the comprehensive engineering geological conditions of the construction site, and as a physical quantity to describe the compressibility of soil—compression coefficient, it is usually obtained from the e-p curve obtained from the indoor routine compression test here. Although the traditional consolidation tester can perform conventional compression tests, the test samples need to go through a series of processes such as excavation-packaging-handling-cutting-testing, etc., especially packaging and handling, which require a lot of cost and the handling process The soil will be more or less secondary disturbance, so if the test is car...

AI Technical Summary

Problems solved by technology

Although the traditional consolidation tester can perform conventional compression tests, the test samples need to go through a series of processes such as excavation-packaging-handling-cutting-testing, etc., especially packaging and handling, which require a lot of cost and the handling process The soil will be more or less secondary disturbance, so if the test is carried out in the field, it can not only avoid the handling of soil samples in the indoor test, reduce the test cost, but also make up for the quality and quantity of test samples. lack of

[0003] The vertical deformation of soil is different under different water content and different vertical pressure. At present, few people have carried out the consolidation test of continuous change of water content.

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