›› 2011, Vol. 32 ›› Issue (12): 3604-3610.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Theoretical solution for time effect of shaft bearing capacity of single pile in soft soils

CAO Quan1, 2, 3, SHI Jian-yong1, 2, LEI Guo-hui1, 2, AI Ying-bo1, 2, CHEN Hong3   

  1. 1. Geotechnical Research Institute, Hohai University, Nanjing 210098, China; 2. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China; 3. Shenzhen Municipal Design and Research Institute Co., Ltd., Shenzhen, Guangdong 518029, China
  • Received:2011-04-19 Online:2011-12-10 Published:2011-12-13

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Abstract: Based on the theory of effective stress, consolidation solution around the pile which is taken into account the influence of strain softening, magnitude of pile radius and range of excess pore water pressure, a theoretical relationship about time-effect of bearing capacity of single pile is developed, which can be used to predict the variation of shaft bearing capacity of a jacked-in pile with time in saturated soft clay. Different from the traditional way, the effect of different stiffness indices and different consolidation coefficients on the consolidation process in varied clays and highly stratified deposits are considered in the new consolidation solution. Besides, the rationality of the solution is verified by the pile load tests in different time periods after installation.

Key words: theoretical solution, single pile, saturated soft clay, consolidation solution, time effect of shaft bearing capacity

CLC Number: 

  • TU 470
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