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Full-Text Articles in Civil and Environmental Engineering
Experimental Investigation On Dynamic Properties Of Soft Clay Under Coupled Cyclic-Seepage Loads, Hua-Yang Lei, Ying-Gang Xu, Jiang-Yan Miao, Xu Liu
Experimental Investigation On Dynamic Properties Of Soft Clay Under Coupled Cyclic-Seepage Loads, Hua-Yang Lei, Ying-Gang Xu, Jiang-Yan Miao, Xu Liu
Rock and Soil Mechanics
In this paper, a series of triaxial tests under coupled cyclic-seepage loads were carried out for saturated soft clay in Tianjin. The results show that the development of cumulative plastic strain is characterized by three stages: initial instantaneous growth, decelerated increase and stable / linear development, and seepage can enlarge the dynamic deformation up to 1-2 times of that compared to cyclic load only. Larger seepage force induces greater cumulative plastic deformation. The lower frequency or greater cyclic stress amplitude induces larger strain. The prediction model of cumulative plastic deformation of soft clay is established under the condition of dynamic- …
Analytical Solution Of Startup Critical Hydraulic Gradient Of Fine Particles Migration In Sandy Soil, Ming-Nian Wang, Yong-Tao Jiang, Li Yu, Yu-Cang Dong, Ru-Yu Duan
Analytical Solution Of Startup Critical Hydraulic Gradient Of Fine Particles Migration In Sandy Soil, Ming-Nian Wang, Yong-Tao Jiang, Li Yu, Yu-Cang Dong, Ru-Yu Duan
Rock and Soil Mechanics
Suffusion will occur in the internally unstable sandy soil because of the groundwater seepage. Soil failure caused by the suffusion has adverse effects on the building structures or foundations. In this paper, a model that can calculate the force acted on fine particles in seepage field was established by considering the effective stress of soil and the stress reduction of fine particles. According to the equilibrium state of ultimate stress, the formula for calculating the startup critical hydraulic gradient of fine particles migration in sandy soil during the suffusion process was obtained. A DEM-CFD coupled method and the existing experimental …