›› 2011, Vol. 32 ›› Issue (7): 1926-1930.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Centrifugal model test of pile foundation for wind power unit under cyclic lateral loading

WANG Fu-qiang1, 2，RONG Bing1，ZHANG Ga1，ZHANG Jian-min1   

  1. 1. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China; 2. China Hydropower Engineering Consulting Corporation, Beijing 100011, China
  • Received:2009-11-27 Online:2011-07-10 Published:2011-06-30

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Abstract: In offshore wind power project, pile is a commonly used foundation type and is commonly established in soft soil foundations and suffers complex loading combinations, while the bearing capacity and deformation of the foundation is with strict requirements for running of wind power generations. Therefore, studies of behavior and interaction mechanism of pile foundation under cyclic lateral loading have important significance. Centrifugal model tests for typical offshore pile foundation and saturated sand ground are conducted to study deformation characteristics under cyclic lateral loading. Test results show that: under cyclic lateral loading, settlement and horizontal deformation, which is mainly caused by extrusion or collapse, occurs in a limit extent of soil around pile; deformation gradually accumulates with increase of cycles; peak bending moment of pile appears in the 1/3 of burying depth; little change happens in distribution of bending moment with cycles increasing; different excess pore water pressure develops at different locations of soil surrounding pile, which has a certain influence on the foundation behavior

Key words: offshore wind power generating field, single pile, centrifugal model test, cyclic lateral loading, stress-strain response

CLC Number: 

  • TU 473
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