[1]张浩,石名磊,郭院成.土体侧移作用下被动桩受力变形的简化解析计算[J].东南大学学报(自然科学版),2016,46(2):392-399.[doi:10.3969/j.issn.1001-0505.2016.02.026]
 Zhang Hao,Shi Minglei,Guo Yuancheng.Simplified analytical calculation for forced deformation of passive pile subjected to lateral soil displacement[J].Journal of Southeast University (Natural Science Edition),2016,46(2):392-399.[doi:10.3969/j.issn.1001-0505.2016.02.026]
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土体侧移作用下被动桩受力变形的简化解析计算()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
46
期数:
2016年第2期
页码:
392-399
栏目:
土木工程
出版日期:
2016-03-20

文章信息/Info

Title:
Simplified analytical calculation for forced deformation of passive pile subjected to lateral soil displacement
作者:
张浩1石名磊2郭院成1
1郑州大学土木工程学院, 郑州 450001; 2东南大学交通学院, 南京 210096
Author(s):
Zhang Hao1 Shi Minglei2 Guo Yuancheng1
1School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, China
2School of Transportation, Southeast University, Nanjing 210096, China
关键词:
被动桩 土体侧移 桩土相互作用 土压力法 解析解
Keywords:
passive pile lateral soil displacement pile-soil interaction pressure-based method analytical solution
分类号:
TU473
DOI:
10.3969/j.issn.1001-0505.2016.02.026
摘要:
为了分析邻近堆载作用下或失稳土坡中被动桩的力学特性,根据桩土侧向相互作用机理,将被动桩划分为自由段、被动段和主动段.将土体侧移作用下桩身附加被动荷载的分布模式假定为二次函数,基于Euler-Bernouli梁理论和Winkler地基模型,提出了土体侧移作用下被动桩的通用简化计算模型.然后,分别建立了各桩段的微分控制方程组,结合桩段界面连续条件和桩顶、桩底边界条件,求得桩身响应的解析解.最后,通过算例分析验证了该解析解的可靠性,并对被动桩受力响应的主要影响因素进行了分析.结果表明,随着土体侧向位移作用于桩身被动侧荷载水平的增大和地基土抗力的下降,桩身弯矩和水平位移逐渐增大.
Abstract:
In order to analyze the mechanical characteristics of the passive pile adjacent to the surcharge load or in an unstable slope, according to the pile-soil lateral interaction mechanism, the passive pile is divided into three sections including the free section, the passive section and the active section. The distribution patterns of the additional passive load subjected to the lateral soil displacement are assumed as a quadratic function. Based on the Euler-Bernouli beam theory and the Winkler foundation model, the general calculation model of the passive pile subjected to the lateral soil displacement is derived. Then, the differential equations of each sections of the passive pile are drawn out. According to the continuity conditions on the interface of each pile section and the boundary conditions at the top and the bottom of the pile, the analytical solution of the pile response is deduced. Finally, the reliability of this analytical solution is verified by analysis of examples. And the main influence factors of the response of the passive pile are analyzed. The results show that with the increase of the passive load due to the lateral soil displacement and the decrease of the ground soil resistance, both the bend and the lateral displacement of the pile increase.

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备注/Memo

备注/Memo:
收稿日期: 2015-09-17.
作者简介: 张浩(1985—),男,博士,讲师,tmzhanghao@zzu.edu.cn.
基金项目: 国家自然科学基金资助项目(41272132)、河南省高等学校重点科研资助项目(16A560009).
引用本文: 张浩,石名磊,郭院成.土体侧移作用下被动桩受力变形的简化解析计算[J].东南大学学报(自然科学版),2016,46(2):392-399. DOI:10.3969/j.issn.1001-0505.2016.02.026.
更新日期/Last Update: 2016-03-20