RESEARCH ON PILE-PILE DYNAMIC INTERACTION OF LATERAL VIBRATION BASED ON T-P MODEL

被引：0
|
作者：
Jiang J. [1 ,2 ,3 ]
Chai W.-C. [1 ]
Zhang T. [1 ]
Long Y.-H. [1 ]
机构：
[1] College of Civil Engineering and Architecture, Guangxi University, Guangxi, Nanning
[2] Key Laboratory of Disaster Prevention and Structural Safety, Ministry of Education, Guangxi University, Guangxi, Nanning
[3] Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, Guangxi University, Guangxi, Nanning
来源：
Gongcheng Lixue/Engineering Mechanics | 2023年 / 40卷 / 01期
关键词：
coupled loads; dynamic Pasternak foundation-Timoshenko beam model; lateral vibration; layered soil; pile-pile dynamic interaction factor;
D O I：
10.6052/j.issn.1000-4750.2021.07.0567
中图分类号：
学科分类号：
摘要：
To accurately reveal pile-soil dynamic interaction and remedy the shortcoming of dynamic Winkler foundation-Bernoulli-Euler beam model (E-W model), this paper considers soil shear effect and pile shear deformation, and establishes a dynamic Pasternak foundation-Timoshenko beam model (T-P model) to simulate pile-soil dynamic interaction. And the analytical solution for horizontal vibration of the active pile under horizontal dynamic and vertical load is derived. Based on this, the governing equations for horizontal vibration of the passive pile are established by the principle of pile-pile dynamic interaction. A transfer matrix method is used to consider the layered characteristics of soil, and an initial parameter method is utilized to calculate the pile-pile dynamic interaction factors. The correctness of the proposed method is validated by comparing the calculated results with existing solutions. Through the analysis of parameters, it is concluded that the shear effect of soil can enhance horizontal dynamic interaction factors. Given the parameters of pile and soil, there exists an "effective pile length" (Ld=10d~15d) for active and passive piles. When the length-diameter ratio of the pile is in the range of L/d=5~10, the influence of pile shear deformation on dynamic interaction factors should not be ignored. In addition, the vertical load has the most significant effect on cross-swaying-rocking dynamic interaction factor. © 2023 Tsinghua University. All rights reserved.
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页码：87 / 99
页数：12
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