›› 2018, Vol. 39 ›› Issue (8): 2991-3000.doi: 10.16285/j.rsm.2016.2571

• 岩土工程研究 • 上一篇    下一篇

低概率水平岩质边坡系统可靠度分析

蒋水华1, 2,刘 贤1,姚 池1,杨建华1,黄劲松1,江先河3   

  1. 1. 南昌大学 建筑工程学院,江西 南昌 330031;2. 中国科学院武汉岩土力学研究所 岩土力学与工程国家重点实验室,湖北 武汉 430071; 3. 江西水利职业学院,江西 南昌 330013
  • 收稿日期:2016-11-03 出版日期:2018-08-11 发布日期:2018-09-02
  • 通讯作者: 姚池,男,1986年生,博士,副教授,主要从事边坡渗流与稳定性分析方面的研究工作。E-mail: chi.yao@ncu.edu.cn E-mail: sjiangaa@ncu.edu.cn
  • 作者简介:蒋水华,男,1987年生,博士,副教授,主要从事岩土工程可靠度与风险分析方面的研究工作。
  • 基金资助:

    长江科学院开放研究基金资助项目(No. CKWV2018480/KY);国家自然科学基金项目(No. 51509125,No. 51679117,No. U1765207);岩土力学与工程国家重点实验室开放基金资助课题(No. Z016014);江西省水利厅科技项目(No. KT201534)。

System reliability analysis of rock slopes at low probability levels

JIANG Shui-hua1, 2, LIU Xian1, YAO Chi1, YANG Jian-hua1, HUANG Jin-song1, JIANG Xian-he3   

  1. 1. School of Civil Engineering and Architecture, Nanchang University, Nanchang, Jiangxi 330031, China; 2. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China; 3. Jiangxi Water Resources Institute, Nanchang, Jiangxi 330013, China
  • Received:2016-11-03 Online:2018-08-11 Published:2018-09-02
  • Supported by:

    This work was supported by the CRSRI Open Research Program (CKWV2018480/KY), the National Natural Science Foundation of China (51509125, 51679117, U1765207), the Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering (Z016014) and the Science and Technology Project of Jiangxi Provincial Department of Water Resources (KT201534).

摘要: 针对目前含多个相关失效模式的低概率水平岩质边坡系统可靠度分析的难题,提出了基于子集模拟的岩质边坡系统可靠度分析方法,推导了典型边坡系统失效概率计算表达式。为表征不同失效模式间的相关性,提出采用max和min函数构建边坡系统功能函数。并通过含多个相关失效模式的双滑块岩质边坡及锦屏一级左岸坝肩边坡系统可靠度分析验证了提出方法的有效性。结果表明:提出方法计算效率明显高于蒙特卡洛模拟方法,计算精度优于一阶等效近似方法、N维等效方法和Ditlevsen上下限方法,可为解决低概率水平复杂岩质边坡系统可靠度问题提供一个重要的工具。此外,通过max和min函数构建的边坡系统功能函数不仅可以准确地表征边坡不同失效模式间的相关性,而且可为边坡系统可靠度分析提供便利。

关键词: 岩质边坡, 系统可靠度, 多失效模式, 小失效概率, 子集模拟

Abstract: To effectively tackle system reliability problems of rock slopes involving multiple correlated potential failure modes at small probability levels, this paper aims to propose a subset simulation-based approach for system reliability analysis of rock slopes. The expressions for system failure probability calculation of typical slope systems are derived. To account for the correlations among multiple failure modes, the “max” and “min” functions are utilized to construct the system performance functions. A benchmark rock slope with two sliding blocks and the left abutment slope of Jinping I slope with multiple correlated failure modes are investigated to demonstrate the effectiveness of the proposed approach. The results indicate that the proposed approach is much more efficient than the Monte-Carlo simulation (MCS) and more accurate than the first order approximation, N-dimensional equivalent method and Ditlevsen’s bounds method when solving the system reliability problems of rock slopes with small probabilities. In summary, it provides an effective means for tackling system reliability problems of complex rock slopes at small probability levels. In addition, the correlations among different failure modes can be effectively quantified with the aid of the “max” and “min” functions, which greatly facilitates the system reliability analysis of rock slopes.

Key words: rock slopes, system reliability, multiple failure modes, small probability of failure, subset simulation

中图分类号: 

  • TU 457

[1] 周子涵, 陈忠辉, 王建明, 张凌凡, 年庚乾. 爆破荷载作用下露天矿边坡稳定性的突变研究[J]. 岩土力学, 2020, 41(3): 849-857.
[2] 蒋水华, 冯泽文, 刘贤, 姜清辉, 黄劲松, 周创兵. 基于自适应贝叶斯更新方法的岩 土参数概率分布推断[J]. 岩土力学, 2020, 41(1): 325-335.
[3] 吴锦亮, 何吉, . 岩质边坡动态开挖模拟的复合单元模型[J]. 岩土力学, 2019, 40(S1): 535-540.
[4] 刘新荣, 邓志云, 刘永权, 刘树林, 路雨明, . 地震作用下水平层状岩质边坡累积损伤与 破坏模式研究[J]. 岩土力学, 2019, 40(7): 2507-2516.
[5] 言志信, 龙哲, 屈文瑞, 张森, 江平, . 地震作用下含软弱层岩体边坡锚固 界面剪切作用分析[J]. 岩土力学, 2019, 40(7): 2882-2890.
[6] 朱仁杰, 车爱兰, 严 飞, 文 海, 葛修润, . 含贯通性结构面岩质边坡动力演化规律[J]. 岩土力学, 2019, 40(5): 1907-1915.
[7] 任晋岚, 陈曦, 王冬勇, 吕彦楠. 基于广义Hoek-Brown准则的瞬时线性化 强度折减技术[J]. 岩土力学, 2019, 40(12): 4865-4872.
[8] 赵密, 张少华, 钟紫蓝, 侯本伟, 杜修力. 柱下独立基础稳健性设计与分析[J]. 岩土力学, 2019, 40(11): 4506-4514.
[9] 肖国峰,陈从新. 岩质块体渐进破坏的稳定分析方法[J]. , 2018, 39(8): 3001-3010.
[10] 卞 康,刘 建,胡训健,李鹏程,陈玲朱,刘振平, . 含顺层断续节理岩质边坡地震作用下的破坏模式与动力响应研究[J]. , 2018, 39(8): 3029-3037.
[11] 许 明,唐亚锋,刘先珊,罗 斌,唐道勇,. 自适应锚索锚固岩质边坡地震动力响应分析[J]. , 2018, 39(7): 2379-2386.
[12] 周 勇,王旭日,朱彦鹏,李京榜,蒋小奎,. 强风化软硬互层岩质高边坡监测与数值模拟[J]. , 2018, 39(6): 2249-2258.
[13] 杨智勇,李典庆,曹子君,唐小松, . 基于广义子集模拟的土坡系统可靠度分析[J]. , 2018, 39(3): 957-966.
[14] 李 韬,徐奴文,戴 峰,李天斌,樊义林,李 彪,. 白鹤滩水电站左岸坝肩开挖边坡稳定性分析[J]. , 2018, 39(2): 665-674.
[15] 徐奴文,李 韬,戴 峰,李 彪,樊义林,徐 剑,. 基于离散元模拟和微震监测的白鹤滩水电站左岸岩质边坡稳定性分析[J]. , 2017, 38(8): 2358-2367.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
No Suggested Reading articles found!