›› 2010, Vol. 31 ›› Issue (8): 2507-2513.

• Geotechnical Engineering • Previous Articles     Next Articles

Study of natural frequency of tapered high pier in consideration of pile-soil interaction

ZHAO Ming-hua, YANG Jing, YANG Ming-hui   

  1. Institute of Geotechnical Engineering, Hunan University, Changsha 410082, China
  • Received:2002-11-27 Online:2010-08-10 Published:2010-08-30

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Abstract:

Based on considering tapered pier behavior and the soil-pile interaction,bridge pier and group piles are simplified as global properties;and then an analysis model of tapered pier supported by group piles is presented; Secondly, analysis model is decomposed into two subsystems: elastic deformation of bridge pier and rigid deformation of group piles,the natural frequencies of which are solved by finite element method and energy method. Further,the global natural frequency of tapered pier is deduced by using the Southwell frequency composition method. Lastly, the comparison between calculated results and the real engineering examples shows that the method is reasonable;and the analysis results of the parameters of pier in natural frequency could be available for some reasonably conclusions.The results show that it is more practical in consideration of the pile-soil interaction and the geometry nonlinear of tapered pier. The influence of pile- soil interaction on natural frequency of tapered high pier could not be neglected in study.

Key words: tapered pier, natural frequency, energy method, finite element method, Southwell frequency composition method

CLC Number: 

  • U443.15
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