Rock and Soil Mechanics ›› 2019, Vol. 40 ›› Issue (5): 1862-1868.doi: 10.16285/j.rsm.2018.0124

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

One-dimensional consolidation characteristics of viscoelastic foundation with continuous drainage boundary under time- dependent loading

TONG Li-hong1, WANG Jue1, GUO Sheng-gen2, ZHU Huai-long1, XU Chang-jie1, 3   

  1. 1. Jiangxi Key Laboratory of Infrastructure Safety and Control in Geotechnical Engineering, East China Jiaotong University, Nanchang, Jiangxi 330013, China; 2. Port and Shipping Administration of Jiangxi Province, Nanchang, Jiangxi 330038, China; 3. Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou, Zhejiang 310058, China
  • Received:2018-01-18 Online:2019-05-11 Published:2019-06-02
  • Supported by:
    This work was supported by the National Natural Science Foundation of China(11702095), the National Science Found for Distinguished Young Scholars （51725802) and the National Program on Key Basic Research Project of China (973 Program) (2015CB057801).

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Abstract: Considering the rheological properties of soft clay and the engineering practice, the continuous boundary condition is applied to construct a one-dimensional consolidation model for viscoelastic foundation under time-dependent loading condition. The analytic solution for one-dimensional consolidation of saturated soft clay under time-dependent loading and continuous drainage boundary is solved by using separation of variables and variation of constants methods. Furthermore, influences of boundary conditions and soil parameters on excess pore water pressure and effective stress are studied. It is found that the variation of excess pore water pressure is directly influenced by permeability of upper- and lower- boundary. The consolidation rate is larger at the location closer to the boundary with higher permeability, and with decreasing the distance from drainage boundary, the influence on consolidation rate increases gradually. Moreover, the effective stress is significantly influenced by permeability coefficient, elastic modulus of Kelvin model and viscosity coefficient.

Key words: time-dependent loading, continuous drainage boundary, viscoelasticity, one-dimensional consolidation

CLC Number: 

  • TU 432
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