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A platform for research: civil engineering, architecture and urbanism
Research on Cumulative Plastic Deformation of the Soft Clay Under Cyclic Loading
In coastal areas, the cumulative plastic strain development characteristics of soft clay foundation of wharf, airport, highway, etc., will change under long-term loads. In order to reveal the influence of the consolidation state and the drainage conditions on the cumulative plastic deformation of soft clay, a series of dynamic triaxial tests were carried out by the GDS triaxial apparatus, and then the cumulative plastic deformation of clay was analyzed and studied based on the fractional partial differential theory model. The test results show that the cyclic strain amplitude of drained triaxial test decreases with the increase of confining pressure, the base value creep curve decreases, and the cyclic strain amplitude also decreases; With the increase of vibration times, the hysteretic curve moves to the right and quickly tends to be dense. A certain amount of plastic strain will be accumulated in each loading cycle, but the accumulation decreases gradually. The plastic strain tends to be stable, and the elastic properties of soil become more prominent. Under different drainage conditions, the undrained cyclic strain curve is less than the drained cyclic strain curve, but the cyclic strain amplitude of the undrained cyclic strain curve is greater than that of the drained cyclic strain curve.
Research on Cumulative Plastic Deformation of the Soft Clay Under Cyclic Loading
In coastal areas, the cumulative plastic strain development characteristics of soft clay foundation of wharf, airport, highway, etc., will change under long-term loads. In order to reveal the influence of the consolidation state and the drainage conditions on the cumulative plastic deformation of soft clay, a series of dynamic triaxial tests were carried out by the GDS triaxial apparatus, and then the cumulative plastic deformation of clay was analyzed and studied based on the fractional partial differential theory model. The test results show that the cyclic strain amplitude of drained triaxial test decreases with the increase of confining pressure, the base value creep curve decreases, and the cyclic strain amplitude also decreases; With the increase of vibration times, the hysteretic curve moves to the right and quickly tends to be dense. A certain amount of plastic strain will be accumulated in each loading cycle, but the accumulation decreases gradually. The plastic strain tends to be stable, and the elastic properties of soil become more prominent. Under different drainage conditions, the undrained cyclic strain curve is less than the drained cyclic strain curve, but the cyclic strain amplitude of the undrained cyclic strain curve is greater than that of the drained cyclic strain curve.
Research on Cumulative Plastic Deformation of the Soft Clay Under Cyclic Loading
Lecture Notes in Civil Engineering
Geng, Guoqing (editor) / Qian, Xudong (editor) / Poh, Leong Hien (editor) / Pang, Sze Dai (editor) / Xu, Xubing (author) / Cui, Zhendong (author) / Zheng, Yonglai (author)
2023-03-14
10 pages
Article/Chapter (Book)
Electronic Resource
English
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