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Volume 35 Issue zk2
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WANG Xu1, 2, ZHANG Yan-jie1, JIANG Dai-jun1, LIU De-ren1, JIANG Peng-cheng1, 3. Experimental research on bearing features of CFG pile composite ground and vibrating sinktube detritus pile composite ground on saturated loess[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk2): 1062-1065.
Citation: WANG Xu1, 2, ZHANG Yan-jie1, JIANG Dai-jun1, LIU De-ren1, JIANG Peng-cheng1, 3. Experimental research on bearing features of CFG pile composite ground and vibrating sinktube detritus pile composite ground on saturated loess[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk2): 1062-1065.
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Experimental research on bearing features of CFG pile composite ground and vibrating sinktube detritus pile composite ground on saturated loess

  • 1. School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China; 2. Key Laboratory of Road & Bridge and Underground Engineeringof Gansu Province, Lanzhou 730070, China; 3. Guangzhou Railway Group Co., Ltd., Guangzhou 510088, China

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  • Received Date: June 14, 2013
  • Published Date: November 24, 2013
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    • Abstract
  • The large oil tank group in Lanzhou, which is a part of the China's state key project—the western oil pipe line project, is constructed on the saturated loess stratum for the first time in China. Due to the low natural bearing capacity, only 60 kPa, that the ground treatment should adopt the CFG pile composite method is applied in oil tank area. The vibrating sinktube detritus pile composite method is applied in process plant area. The dynamic penetration tests, single-pile static load tests and composite foundation static load tests are carried out to determine the bearing capacity of the composite foundation. Through the field experimental research, it is found that the bearing capacity of the vibrating sinktube detritus pile composite is only 66 kPa, which does not meet the design requirements of 70 kPa. The bearing capacity of CFG pile composite is 275 kPa, which can meet the design requirements of 270 kPa. The bearing features of the CFG pile composite ground and the vibrating sinktube detritus pile composite ground are discussed to provide references for similar projects.
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    • References (7)
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