浙江大学学报(工学版)  2020, Vol. 54 Issue (3): 521-528    DOI: 10.3785/j.issn.1008-973X.2020.03.012
 土木工程

Dynamic response of pile-surrounding soil based on inversion of existing pile dynamic theory
Jun-tao WU(),Kui-hua WANG*(),Xin LIU,Fan SUN
College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
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Abstract:

A half-space dynamic soil model based on inversion of existing pile dynamic theory was proposed, and an analytical solution in Laplace domain, as well as a semi-analytical solution in time domain, were solved by employing Hankel integral transform. When solving the dynamic response of pile-surrounding soil, this method avoided simultaneous analysis of complex pile-soil coupled vibration, which significantly simplified the solving process. The reasonability of presented solution for soil around and beneath the pile, respectively, was verified by existing analytical solution and finite element analysis (FEA) software ABAQUS. Based on the solution, a problem of pile length prediction by parallel seismic method was discussed. A more convenient method was proposed to predict the unknown length of pile, which can be employed to reduce the workload on site and improve the accuracy of data processing.

Key words: pile dynamic    half space    three-dimensional effect    Hankel integral transform    parallel seismic method

 CLC: TU 473.1

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#### 引用本文:

Jun-tao WU,Kui-hua WANG,Xin LIU,Fan SUN. Dynamic response of pile-surrounding soil based on inversion of existing pile dynamic theory. Journal of ZheJiang University (Engineering Science), 2020, 54(3): 521-528.

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 图 1  桩–土耦合振动计算模型示意图 图 2  半无限空间内圆形均布荷载示意图 图 3  桩周土竖向振动响应时深分析曲线 图 4  桩周土竖向振动响应时深分析曲线 图 5  时深拟合曲线的斜率突变区 图 6  首至波峰时深散点图 图 7  由修正拟合直线的交点推测桩长
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