An Experimental Study on Dynamic Characteristics of Coarse-Grained Soil under Step Cyclic Loading
Source abstract
Abstract
The accumulated plastic deformation induced by a cyclic traffic load will lead to destruction of the subgrade. Coarse-grained soil is a widely used subgrade filler. The GDS dynamic triaxial test was carried out on typical coarse-grained soil fillers to investigate the influence of different confining pressures, consolidation ratios and numbers of cyclic actions on the hysteresis curve under step cyclic loading. The results show that surrounding pressure can significantly reduce the energy lost from a soil sample under cyclic loading. Under the same stress level, increasing the consolidation ratio can effectively reduce the area enclosed by the hysteresis curve. When the stress is increased above a certain value, the strain of the response clearly changes with an increase in the number of cyclic loading. The research findings can theoretically guide the design of coarse-grained soil roadbeds in practical engineering.
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Research context
OpenAlex topics: Geotechnical Engineering and Soil Stabilization · Geotechnical Engineering and Soil Mechanics · Geotechnical Engineering and Underground Structures
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Civil Engineering, Shandong Jianzhu University, Jinan 250101, China
School of Transportation Engineering, Shandong Jianzhu University, Jinan 250101, China
Jinan Jinqu Road Survey Design Research Co., Ltd., Jinan 250101, China
Funding
Shandong Provincial Natural Science Foundation · Science and Technology Project of Universities
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