A coupled dynamic model of large diameter thin-wall pipe pile and soil plug considering pile three-dimensional effect and its analytical solution

被引：0
|
作者：
Wu J. [1 ,2 ]
Wang K. [1 ,2 ]
Liu X. [1 ,2 ]
Sun F. [1 ,2 ]
机构：
[1] Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou, 310058, Zhejiang
[2] Key Laboratory of Soft Soils and Geoenvironmental Engineering of Ministry of Education, Zhejiang University, Hangzhou, 310058, Zhejiang
来源：
Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | 2019年 / 38卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Laplace transform; Longitudinal vibration; Pile foundations; Pipe piles; Soil plug; Three-dimensional effect;
D O I：
10.13722/j.cnki.jrme.2018.1217
中图分类号：
学科分类号：
摘要：
For large diameter thin-wall pipe piles, the soil plug at the pile toe and the pile three-dimensional effect should be taken into account during low-strain testing. A coupled dynamic model of large diameter thin-wall pipe and pile-soil plug considering the pile three-dimensional effect was presented, and an analytical solution in Laplace domain and a semi-analytical solution in time domain were subsequently deduced subjected to the longitudinal vibration. Comparisons between the solution and the existing solution based on Rayleigh-Love rod model were carried out. It is indicated that the two solutions are identical, which verifies the reliability of the one-dimensional rod model considering the lateral inertia effect in solving the dynamic problems of a pipe pile with soil plug. The influence of the combinations of the outer radius and the wall thickness of the pipe pile and the height of the soil plug on the low-strain testing results adopting the presented solution. The study can provide theoretical support and practical guidance for the engineering test on site. © 2019, Science Press. All right reserved.
引用
收藏
页码：1064 / 1072
页数：8
相关论文
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