Study on consolidation theory of foundation with partially penetrated sand wells based on large strain
SUN Liqiang1，JIA Tianqiang1，YAN Shuwang1，2，LU Jiangxin1，YUE Changxi1，KANG Yuyuan2
(1. State Key Laboratory of Hydraulic Engineering Simulation and Safety，Tianjin University，Tianjin 300072，China；
2. China Petroleum Pipeline Bureau Design Institute of Tianjin，Tianjin 300457，China)
Abstract：The dredger filling has the characteristics of large void ratio，high water content and high compressibility. The permeability，compressibility and drainage path change greatly during the consolidation and the soil layer below the sand drains consolidates also under the effect of sand drains and the vacuum preloading. The governing consolidation equations under the Eulerian coordinate system were deduced based on the large strain consolidation theory，which considered both the large strain of soil and the partially penetrated vertical drains. A FDM program was compiled to solve the governing equations deduced. The shallow improvement of the ground of a project was analyzed. The calculated result agrees well with the field data.
孙立强1，贾天强1，闫澍旺1，2，路江鑫1，岳长喜1，康煜媛2. 基于大变形的未打穿砂井固结理论研究[J]. 岩石力学与工程学报, 2017, 36(2): 504-512.
SUN Liqiang1，JIA Tianqiang1，YAN Shuwang1，2，LU Jiangxin1，YUE Changxi1，KANG Yuyuan2. Study on consolidation theory of foundation with partially penetrated sand wells based on large strain. , 2017, 36(2): 504-512.
2017, Vol. 36 
