Test equipment and test method testing creep property of geosynthetics

Abstract

The invention discloses test equipment and a test method testing creep property of geosynthetics, belonging to the technical field of testing of geosynthetics. The test equipment comprises a main control box, a sample clamping device, a lever loading device and a temperature control box, the sample clamping device can clamp multiple test sample strips in the temperature control box, the front of the lever loading device arranged outside the temperature control box is connected with the sample clamping device, the tail thereof is connected with a loading tray, the temperature control box is arranged on a base, the base is internally provided with multiple measurement elements, and the main control box is electrically connected with the temperature control box and the measurement elements. According to the test method, the test sample strips are clamped in the temperature control box and stand for 12-24 hours at test temperature, the test sample strips are loaded, temperature in the temperature control box is increased level by level, and a computer transmits and processes data. The method can test the creep property of the geosynthetics through a hierarchical isothermal method, shortens test time of creep property of geosynthetics, lowers energy consumption and test costs, and improves precision.

Description

technical field [0001] The invention belongs to the technical field of testing geotechnical synthetic materials, in particular to a test device and a test method for testing the creep performance of geotechnical synthetic materials. Background technique [0002] In the reinforced soil structure, due to the influence of the settlement and deformation of the reinforced structure, the geosynthetics placed in the soil are in a state of tension for a long time. The strain of geosynthetics increases with time, a phenomenon we call creep. When the creep deformation of geosynthetics is too large, the stress inside the reinforced soil structure will be redistributed, which may cause the deformation of the reinforced soil structure to be too large, resulting in instability or failure to continue to use. Therefore, controlling the creep deformation of geosynthetics within the design service life is very important for structural stability. At present, there are two main test methods f...

AI Technical Summary

Problems solved by technology

[0006] 1. The creep test of existing geosynthetics lasts for a long time, the energy consumption and cost are high, and it is incompatible with the existing rapid material development and application plan

[0007] 2. When using the time-temperature superposition method and the conventional test method, there are many samples and a large measurement error caused by long measurement time

[0008] 3. The existing test equipment has low precision and cannot meet the temperature control and loading conditions of the test of the hierarchical isothermal method.

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