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Volume 35 Issue zk2
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XING Hao-feng, LI Hao-ming, AN Xin, LI Chun-feng. Numerical simulation and analysis of mechanical characteristics for large-diameter rock-socketed piles[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk2): 1126-1129.
Citation: XING Hao-feng, LI Hao-ming, AN Xin, LI Chun-feng. Numerical simulation and analysis of mechanical characteristics for large-diameter rock-socketed piles[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk2): 1126-1129.
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Numerical simulation and analysis of mechanical characteristics for large-diameter rock-socketed piles

  • 1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 3. Guizhou Transportation Planning Survey and Design Academy Co., Ltd., Guiyang 550001, China

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  • Received Date: June 14, 2013
  • Published Date: November 24, 2013
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    • Abstract
  • The main pier of in Hezhang Bridge Guizhou province has a height of 195 m, which is supported by 20 rock-socketed piles with 2.5 m in diameter and 40 m in length. The engineering geological condition of the main pier site is very complex. In order to investigate its mechanical characteristics, end bearing and shaft resistance distribution, 3D finite element analyses for individual pile and pile group are carried out. Some valuable conclusions are drawn: the overlaying stratum shares a certain proportion of the upper load, so it is uneconomical to neglect its influence in design; the shaft resistance and tip resistance are not mobilized synchronously, the shaft resistance is mobilized prior to the tip resistance; the reasonable depth of rock-socketed piles can improve the shaft resistance and enhance the load sharing ratio of the tip resistance and the shaft resistance of the overlaying stratum.
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    • References (4)
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    陈 斌, 卓家寿, 吴天寿. 嵌岩桩承载性状的有限元分析[J]. 岩土工程学报, 2002, 24(1): 51-55. (CHEN Bin, ZHUO Jia-shou, WU Tian-shou. Vertical bearing capacity of rock- socketed piles[J]. Chinese Journal of Geotechnical Engineering, 2002, 24(1): 51-55. (in Chinese))
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    黄生根, 张晓炜, 刘炜嶓. 大直径嵌岩桩承载性能的有限元模拟分析[J]. 岩土工程学报, 2011, 33(增刊2): 412-416. (HUANG Sheng-gen, ZHANG Xiao-wei, LIU Wei-bo. FEM analysis of bearing behavior of large-diameter socketed piles[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(S2): 412-416. (in Chinese))
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