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Volume 33 Issue 12
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CHEN Ren-peng, REN Yu, CHEN Yun-min. Experimental investigation on a single stiff pile subjected to long-term axial cyclic loading[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(12): 1926-1933.
Citation: CHEN Ren-peng, REN Yu, CHEN Yun-min. Experimental investigation on a single stiff pile subjected to long-term axial cyclic loading[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(12): 1926-1933.
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Experimental investigation on a single stiff pile subjected to long-term axial cyclic loading

  • (1. MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310027, China; 2. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China)

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  • Published Date: December 14, 2011
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    • Abstract
  • Stiff pile-supported low embankments have been widely adopted in high-speed railway lines in China. Large-scale model tests are carried out to investigate the response of a single stiff pile subjected to axial dynamic loading in silts. Tests are conducted by means of the large foundation and slope engineering simulation system in Zhejiang University. Various combinations of static and cyclic loadings are applied in tests. The pile used in the tests are instrumented with load cells, pore pressure probes and pressure cells. The accumulated settlement, axial force, pore pressure and radial total stress along the pile are monitored. The test results indicate that the cyclic loading causes soil particle rearrangement, which leads to a change in stress state at soil-pile interface. The accumulated settlement and stresses acting on pile shaft are greatly influenced by the cyclic loading ratio (CLR). The development of the accumulated settlement with different CLRs is summarized and presented. The possible mechanisms responsible for stress changes at soil-pile interface are discussed.
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    • References (17)
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