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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2003, Vol. 4 Issue (6): 683-693    DOI: 10.1631/jzus.2003.0683
Civil Engineering     
Study on pile drivability with one dimensional wave propagation theory
CHEN Ren-peng, WANG Shi-fang, CHEN Yun-min
Geotechnical Engineering Institute, Dept. of Civil Engineering, Zhejiang University, Hangzhou 310027, China; Wenling Construction Bureau, Wenling 317500, Zhejiang Province, China
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Abstract  Pile drivability is a key problem during the stage of design and construction installation of pile foundations. The solution to the one dimensional wave equation was used to determine the impact force at the top of a concrete pile for a given ram mass, cushion stiffness, and pile impedance. The kinematic equation of pile toe was established and solved based on wave equation theory. The movements of the pile top and pile toe were presented, which clearly showed the dynamic displacement, including rebound and penetration of pile top and toe. A parametric study was made with a full range of practical values of ram weight, cushion stiffness, dropheight, and pile impedance. Suggestions for optimizing the parameters were also presented. Comparisons between the results obtained by the present solution and in-situ measurements indicated the reliability and validity of the method.

Key words： Pile      Drivability      Stress-wave theory     
Received: 08 October 2002     
CLC:  TU473  
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CHEN Ren-peng
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CHEN Yun-min
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CHEN Ren-peng, WANG Shi-fang, CHEN Yun-min. Study on pile drivability with one dimensional wave propagation theory. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2003, 4(6): 683-693.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2003.0683     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2003/V4/I6/683

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