自然科学版 英文版
自然科学版 英文版
自然科学版 英文版
自然科学版 英文版
英文版编委
自然科学版 英文版
英文版首届青年编委

您目前所在的位置:首页 - 期刊简介 - 详细页面

中南大学学报(自然科学版)

Journal of Central South University

第47卷    第2期    总第258期    2016年2月

[PDF全文下载]    [Flash在线阅读]

    

文章编号:1672-7207(2016)02-0586-07
基于能量法的陡坡段桥梁基桩屈曲稳定性分析
赵明华1,刘伟浩1,尹平保1, 2,杨超炜1,赵衡1, 3

(1. 湖南大学岩土工程研究所,湖南长沙,410082;
2. 长沙理工大学土木与建筑学院,湖南长沙,410004;
3. 中南大学资源与安全工程学院,湖南长沙,410083
)

摘 要: 考虑桩后坡体剩余下滑力的分布规律,以及桩前岩土体水平地基抗力弱化效应对基桩稳定性的影响,建立陡坡段桥梁基桩屈曲稳定分析计算模型。通过建立桩土体系的总势能方程,并运用能量法导得陡坡段桥梁基桩屈曲临界荷载和稳定计算长度解答。以实际工程基桩为例对影响基桩屈曲稳定性的桩身弹性模量、桩径、嵌固深度等因素进行参数分析。研究结果表明:本文计算结果与已有模型试验结果吻合较好,表明本文解答合理。基桩的埋入比、临界长径比及临界嵌固深度对其屈曲稳定性具有显著影响。

 

关键词: 桥梁工程;陡坡;能量法;屈曲;影响因素

Buckling analysis of bridge piles insteep slopes based on energy method
ZHAO Minghua1, LIU Weihao1, YIN Pingbao1, 2, YANG Chaowei1, ZHAO Heng1, 3

1. Institute of Geotechnical, Hunan University, Changsha 410082, China;
2. School of Civil Engineering and Architecture,
Changsha University of Science and Technology, Changsha 410004, China;
3. School of Resources and Safety Engineering, Central South University, Changsha 410083, China

Abstract:A theoretical model for bridge pile buckling in steep slope, by which the influence of distribution of landslide-thrust behind the pile as well as the weakening of the horizontal resistance of foundation in front of the pile would be considered, was further developed. The analyses were performed based on the total potential energy equation of the pile-soil system, and the solution of stability calculation length was obtained by using energy method. The parametric analyses were conducted, such as elastic modulus, diameter, and the embedded depth of pile. The results show that the calculated results from the proposed model demonstrate a good agreement with the experimental observation. The embedment ratio of pile, the critical ratio of length to diameter, and the critical embedded depth have significant influences on the buckling stability of pile.

 

Key words: bridge engineering; steep slope; energy method; buckling; influence factors

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
版权所有:《中南大学学报(自然科学版、英文版)》编辑部
地 址:湖南省长沙市中南大学 邮编: 410083
电 话: 0731-88879765(中) 88836963(英) 传真: 0731-88877727
电子邮箱:zngdxb@csu.edu.cn 湘ICP备09001153号