›› 2017, Vol. 38 ›› Issue (5): 1517-1523.doi: 10.16285/j.rsm.2017.05.036

• Numerical Analysis • Previous Articles     Next Articles

3D Finite element analysis of vacuum preloading considering inconstant well resistance and smearing effects

LIU Yong1, QI Lan2, LI Shao-ming3, GUO Hao-yang4   

  1. 1. Cost Center, Power China Chengdu Engineering Corporation Limited, Chengdu, Sichuan 610072, China; 2. State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China; 3. Water Conservancy Research and Technology Promotion Centre of Hangzhou, Hangzhou, Zhejiang 310016, China; 4. Power China Northwest Engineering Corporation Limited, Xi’an, Shaanxi 710065, China
  • Received:2015-07-08 Online:2017-05-11 Published:2018-06-05

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Abstract: The inconstant well resistance effect, namely the changing discharge capacity of PVD with the foundation depth and consolidation time, is observed in drainage well under the vacuum preloading condition. Meanwhile, the partition of vertical drain zone and smear zone in 3D model is another challenging problem of finite element simulation. In order to simulate the actual conditions of vacuum preloading, a model with dimensionless parameters and considering well resistance in 3D finite element analysis is developed in this paper. An adaptive grid unit simplifies the drain zone and an equivalent method simplifies smear zone in simulation. The proposed procedure is applied to build the 3D finite element model of the reclamation project in Tianjin Port, and is verified by comparisons between the calculated data and the observed data.

Key words: inconstant well resistance effect, smearing effect, vacuum preloading, 3D finite element

CLC Number: 

  • TU 473.1

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