Internal force and deformation of step-tapered pile under lateral loads

被引：1
|
作者：
Hu W.-T. [1 ]
Liu D. [1 ]
Geng D.-X. [4 ]
Wang N. [1 ]
Xu C.-J. [1 ,2 ]
Shangguan X. [1 ]
Min J. [3 ]
机构：
[1] Jiangxi Key Laboratory of Infrastructure Safety Control in Geotechnical Engineering, East China Jiaotong University, Nanchang
[2] Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou
[3] Jiangxi Vocational College of Environmental Engineering, Ganzhou
[4] National Experimental Teaching Demonstration Center of Civil Engineering, East China Jiaotong University, Nanchang
来源：
Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2020年 / 54卷 / 04期
关键词：
Horizontal bearing capacity; Length-diameter ratio; Pile-diameter ratio; Position of tapered section; Step-tapered pile;
D O I：
10.3785/j.issn.1008-973X.2020.04.013
中图分类号：
学科分类号：
摘要：
An analytical algorithm for calculating the lateral response of a horizontally loaded step-tapered pile was proposed based on linear elastic subgrade reaction theory. The algorithm assumes a constant subgrade reaction modulus for each soil layer. The pile was segmented according to the variation in the pile section and the different soil layers. The governing equation for every segment was established. Then the iterative relationship of the deflection was derived, and the distribution of internal force and deformation of the pile with given boundary conditions were given by considering the deformation continuity between the adjacent pile segments and the boundary conditions of the pile tips. The obtained results were compared with the finite element calculation results and the field measured data in order to verify the algorithm. The influences of pile parameters such as length-diameter ratio, the position of the reduced diameter or pile-diameter ratio on the internal force and deformation distribution of pile were discussed. Reducing the length-diameter ratio and shifting the position of the reduced diameter to the bottom of the pile can reduce the maximum groundline displacement and increase the maximum bending moment. Reducing the pile-diameter ratio is conducive to reducing the maximum bending moment and coordinating the deformation more effectively. © 2020, Zhejiang University Press. All right reserved.
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页码：739 / 747
页数：8
相关论文
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