Numerical analysis of oversized deep soft foundation improved by plastic drainge plates combined with surcharge preloading
ZHANG Jia-feng1, 2, 3, QIAN Jian-gu1, ZHANG He-qing2, HAN Li-ming4, CAO Jie4, LI Jun-shi3
1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. China Airport Construction Corporation of CAAC, Beijing 100101, China; 3. Shanghai CAAC New Era Airport Design & Research Institute Co., Ltd., Shanghai 200335, China; 4. The Engineering Research Base of China Airport Construction Corporation of CAAC, Beijing 100101, China
Abstract：A series of two-dimensional numerical analyses are carried out to investigate the behaviors of soft soil foundation at Shanghai Pudong International Airport by means of the finite element software Plaxis. Both the soft soil model and the Mohr-Coulomb model are used to simulate the staged construction process involving installation of plastic drainage plates, layered filling and surcharge preloading and unloading. The numerical and field monitoring results are compared to investigate the behaviors of soft soil foundation improved by plastic drainage plates together with surcharge loading method. It is shown that it is necessary to take the creep of soft soils into consideration for predicting settlements of thick soft soil layers improved by using this method.
数值分析. 塑料排水板联合超载预压处理超大面积深厚软基的[J]. 岩土工程学报, 2013, 35(zk2): 892-896.
ZHANG Jia-feng, QIAN Jian-gu, ZHANG He-qing, HAN Li-ming, CAO Jie, LI Jun-shi. Numerical analysis of oversized deep soft foundation improved by plastic drainge plates combined with surcharge preloading. Chinese J. Geot. Eng., 2013, 35(zk2): 892-896.
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