Strain-control continuous-loading consolidometer for measuring compressibility index of soil body

Abstract

The invention discloses a strain-control continuous-loading consolidometer for measuring a compressibility index of soil body, and mainly solves a problem that there is no proper measurement instrument for strain-control continuous-loading consolidation test methods and fills a gap in the field in our country. The consolidometer may be an acceptable scheme for popularizing strain-control consolidation test. Meanwhile, the consolidometer achieves full-automatic control of the test process, standardizes detection steps, reduces labor intensity of test operators and greatly improves test efficiency. The strain-control continuous-loading consolidometer is mainly composed of: a monitoring computer, a collection controller, a sensor, a consolidometer main machine, and data connection lines, etc., wherein software on the monitoring computer is used for setting test parameters, instrument control parameters and processing data, etc. The collection controller, as a brain of the whole system, isused for collecting data from the sensor and sending a control signal to the consolidometer main machine, and also controlling every step in the whole test process.

Description

technical field [0001] The invention relates to a strain control continuous loading consolidation instrument used for testing the compressibility index of soil, belonging to the technical field of testing. Background technique [0002] Geotechnical test is one of the important contents in civil engineering, in which the compressibility of soil is one of the important indicators for its measurement. Under the additional stress, the foundation soil will deform, which will cause the settlement and deformation of the building on the soil. Uniform settlement or excessive settlement is directly related to the normal use of the building, and even endangers the safety of the building. Therefore, it is of great significance to quickly and accurately determine the compressibility index of the soil in engineering practice. [0003] The existing domestic method for indoor testing the compressibility index of soil is mainly the standard consolidation test method, which uses a lever type ...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the deficiencies of the above-mentioned existing devices and provides a strain-controlled continuous loading consolidation instrument for testing the compressibility index of soil. The full-automatic strain control continuous loading consolidation test system, the device and test method of the present invention solve the problem that the step-by-step loading test method takes a long time, and the simulated foundation settlement deformation does not conform to the actual situation, and the test data is more real and accurate. It is credible and complies with GB / T50123-1999 "Standards for Soil Engineering Test Methods". ), constant loading rate method (CRL), equal pore water pressure gradient method (CGC), step-by-step incremental method loading, restore the initial state of the instrument after the test, etc. The instrument integrates electronic transmission, mechanical manufacturing, and sensor technology. Integrated, can realize the automatic control of the test process, each process of the test can be automatically transferred to continuous operation, without manual intervention control

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