[1]许四发,邢文强,丛晟亦,等.考虑竖向地震效应土质边坡临界滑动面识别解析方法与应用[J].自然灾害学报,2019,28(04):069-78.[doi:10.13577/j.jnd.2019.0408]
 XU Sifa,XING Wenqiang,CONG Shengyi,et al.Analytical method of critical slip surface for soil slope with considering vertical seismic action effect and its application[J].,2019,28(04):069-78.[doi:10.13577/j.jnd.2019.0408]
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考虑竖向地震效应土质边坡临界滑动面识别解析方法与应用
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
28
期数:
2019年04期
页码:
069-78
栏目:
出版日期:
2019-08-28

文章信息/Info

Title:
Analytical method of critical slip surface for soil slope with considering vertical seismic action effect and its application
作者:
许四发1 邢文强2 丛晟亦2 唐亮23 凌贤长24 曲娜2
1. 中国铁建港航局集团有限公司, 广东 珠海 519000;
2. 哈尔滨工业大学 土木工程学院, 黑龙江 哈尔滨 150090;
3. 重庆大学 山地城镇建设与新技术教育部重点实验室, 重庆 400045;
4. 青岛理工大学 土木工程学院, 山东 青岛 266033
Author(s):
XU Sifa1 XING Wenqiang2 CONG Shengyi2 TANG Liang23 LING Xianzhang24 QU Na2
1. CRCC Harbour & Channel Engineering Bureau Group Co., Ltd, Zhuhai 519000, China;
2. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China;
3. Key Laboratory of New Technology for Construction of Cities in Mountain Area, Chongqing University, Chongqing 400045, China;
4. School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China
关键词:
临界滑动面竖向地震动土质边坡运动学容许准则解析法
Keywords:
critical slip surfacevertical earthquake motionsoil slopekinematical acceptability criteriasimplified method
分类号:
TU435;X43;X9;S157
DOI:
10.13577/j.jnd.2019.0408
摘要:
众多震害调查与研究表明,竖向地震动对土质边坡稳定性的影响不容忽视。本文依据极限平衡理论,借助数学解析手段,保证地震中边坡满足土体应力和运动学容许准则,结合边坡变形的几何相容条件,考虑竖向地震动效应的作用,推导了土质边坡临界滑动面数学表达式,建立了土质边坡临界滑动面识别解析方法,并进行了可操作的界面化数值实现。随后,采用基于OpenSees独立开发的边坡地震反应分析三维有限元软件SlopeSAR的计算结果验证了该解析方法的可靠性。最后,针对均质边坡、非均质边坡及考虑孔压效应的均质边坡3种情况,探讨了竖向地震动对土质边坡临界滑动面的影响。研究结果表明,竖向地震能够明显增大边坡临界滑动带的范围和深度。本文建立的方法可为同类土质边坡地震滑动面确定提供一种新思路与参考。
Abstract:
Large amounts of investigation and research show that the vertical motion has a nonnegligible effect on the stability of soil slope. Based on the theory of limit equilibrium, this thesis satisfies the criteria of stress and kinematics under seismic with the aid of mathematical analytical method, and in accord with the geometrical compatibility condition of the deformation of slope. By solving the nonlinear equations, the acceptable minimum critical acceleration and critical slip surface are obtained. Finally, the mathematical expressions of determining the critical slip surface and the stability of slope are derived, which consider the effect of vertical earthquake. A numerical interface was also implemented for operation. Based on OpenSees, SlopeSAR, three-dimensional finite element software is independently developed and can conduct the seismic response and stability analysis of slope. The validity of this analytical method is verified by the finite element software. In addition, the effect of the vertical seismic action on soil slope was discussed under conditions of homogeneous slope, non-homogeneous slope, and homogeneous slope considered with pore pressure. The result shows that the vertical seismic action magnified the area and depth of the critical slip surface for soil slope significantly. This method could provide a new way for the stability analysis and determination of critical slip surface of the embankment slope in a mountainous area under strong earthquakes.

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备注/Memo

备注/Memo:
收稿日期:2018-07-07;改回日期:2019-06-17。
基金项目:国家重点研发计划战略性国际科技创新合作重点专项(2016YFE0205100);国家自然科学基金重点项目(41430634);重庆大学山地城镇建设与新技术重点实验室开放基金项目(0902071812102/010)
作者简介:许四发(1963-),男,教授级高级工程师,主要从事港口与水运工程建设技术研究.E-mail:xusf2002@163.com
通讯作者:邢文强(1993-),男,硕士研究生,主要从事边坡工程防灾减灾与防控技术等方面研究.E-mail:xwq_hit@163.com
更新日期/Last Update: 1900-01-01