第38卷第3期 2016年6月
土木建筑与环境工程
Journal of Civil,Architectural &. Environmental Engineering
doi;10.11835/j.issn.1674-4764.2016.03.007
水平荷载作用下斜坡刚性桩非线性分析
陈兆'，陈骅伟1，蒋冲2，刘霖2，沙策2，翟学迁2
Vol. 38 No.3 Jun.2016
（1.湖南省交通规划勘察设计院，长沙410008，2.中南大学资源与安全工程学院，长沙410083)
摘要：在综合分析现有水平荷载作用下桩基分析方法的基础上，建立了考虑桩侧土体受力状态的斜坡刚性桩力学模型；根据极限平衡原理，建立横向荷载作用下斜坡刚性桩弯矩和应力平衡方程；引入考虑斜坡影响的力一曲线方法，提出了综合考虑桩侧土体极限承载力与水平抗力系数沿深度呈线性增加的侧向极限承载力与土体抗力承载力系数计算方法，同时，将该方法应用于计算实例，通过与已有有限元和理论计算方法对比分析，计算结果验证了本文方法的合理性与可行性；并利用该方法，分析了斜坡坡角、桩土接触面系数以及地基水平抗力系数对斜坡刚性桩承载特性的影响因素。分析表明：斜坡的坡角、框土接触面系数对侧向荷载作用下斜坡刚性框的荷载位移曲线影响明
显，而桩侧土的抗力系数对侧向荷载作用下斜坡刚性桩的荷载位移曲线影响不明显。关键词：斜坡；桩；水平荷载；黏土
中图分类号：TU476.4
文献标志码：A
文章编号：1674-4764(2016)03-0047-06
Nonlinearanalysisofrigidpileinslopeunderlateralload ChenZhao'，ChenHuawei',JiangChong,LiuLin",Sha Ce",QuXueqian(1. Huan provincial communications planning survey &, design institute, Changsha 410008, P. R. China; 2. School of Resources and Safety Engineering , Central South University, Changsha 410083 , P. R. China
comprehensively. First, mechanics model of rigid pile in slope considering pile lateral stress is established Second, according to the principle of limit equilibrium, the bending moment and stress equilibrium equation of rigid pile in slope under lateral load are proposed. Then the pile lateral ultimate bearing capacity and horizontal resistance coefficient along the depth increasing linear are developed using p y curve method. The proposed method is applied in the case study, and the results verified the rationality and feasibility of this method by comparative analysis with the existing finite element calculation methods. Finally, the method is used to perform a series of parametric analyses, such as angle of slope, pile soil contact surface coefficient and horizontal resistance coefficient, and some significant conclusions are drawn, The slope
收稿日期：2015-11-23
基金项目：国家自然科学基金（51478479)；湖南省自然科学基金（14JJ4003）；中南大学“创新驱动计划"（2015CX005）；湖
南省交通科技项目（201524）
作者简介：陈兆（1982-），男，主要从事隧道与地下工程设计与研究，（E-mail）94641293@qq.com。 Received:201511-23
Foundation item: National Natural Science Foundation of China (No. 51478479); Hunan Province Natural Science
Foundation (No. 14JJ4003); Innovation Driven Plan of Central South University (No. 2015CX005): Hunan Province Transportation Science and Technology Project (No. 201524 )
Author brief: Chen Zhao (1982-) , main research interests: tunnel engineering and underground engineering, (E-mail)
94641293@qq. com