›› 2015, Vol. 36 ›› Issue (8): 2249-2254.doi: 10.16285/j.rsm.2015.08.017

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Centrifuge modeling and numerical analysis of the settlement of an artificial island

LI Gang1, 2, ZHANG Jin-li1, 2, YANG Qing1, 2, JIANG Ming-jing3, XU Guang-ming4   

  1. 1. Institute of Geotechnical Engineering, School of Civil Engineering, Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China; 2. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China; 3. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 4. Department of Geotechnical Engineering, Nanjing Hydraulic Research Institute, Nanjing, Jiangsu 210029, China
  • Received:2014-03-10 Online:2015-08-11 Published:2018-06-13

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Abstract: This paper studies the settlement behaviors of a deep soft clay subgrade in an artificial island. The centrifugal tests are performed to simulate the settlement of foundation soils with a thickness of 60 m. Based on the tests, a 2D finite element model is developed to analyze the settlement behaviors of the foundation soils with implementing an elasto-viscoplasticity constitutive model. Comparisons between centrifugal tests and numerical analysis show that the post-construction settlement curves are in good agreement. The settlement rates are larger in the early stage, but keep stable in the later stage. The dissipation of excess pore water pressure of numerical results is faster than model test for shallow layers; but the tendency from two test has a good agreement in deep layers. The reliability of the numerical method is demonstrated by the consistency between the experimental and numerical results.

Key words: artificial island, centrifuge test, numerical analysis, soft clay, elasto-viscoplasticity, constitutive model, settlement

CLC Number: 

  • TU 411
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