• 全国中文核心期刊
  • 中国科技核心期刊
  • 美国工程索引(EI)收录期刊
  • Scopus数据库收录期刊

均质软土地基上土堤稳定性的极限分析方法

张惠敏, 雷国辉, 刘芳雪, 张飞

张惠敏, 雷国辉, 刘芳雪, 张飞. 均质软土地基上土堤稳定性的极限分析方法[J]. 岩土工程学报, 2019, 41(S2): 21-24. DOI: 10.11779/CJGE2019S2006
引用本文: 张惠敏, 雷国辉, 刘芳雪, 张飞. 均质软土地基上土堤稳定性的极限分析方法[J]. 岩土工程学报, 2019, 41(S2): 21-24. DOI: 10.11779/CJGE2019S2006
ZHANG Hui-min, LEI Guo-hui, LIU Fang-xue, ZHANG Fei. Limit analysis approach for stability of embankments on homogeneous soft soil[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(S2): 21-24. DOI: 10.11779/CJGE2019S2006
Citation: ZHANG Hui-min, LEI Guo-hui, LIU Fang-xue, ZHANG Fei. Limit analysis approach for stability of embankments on homogeneous soft soil[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(S2): 21-24. DOI: 10.11779/CJGE2019S2006

均质软土地基上土堤稳定性的极限分析方法  English Version

基金项目: 国家自然科学基金项目(51578213,51878248); 中央高校基本科研业务费专项资金项目(2018B42414,2017B00814,2017B20614)
详细信息
    作者简介:

    张惠敏(1992— ),女,甘肃金昌人,硕士,从事岩土工程设计工作。E-mail: zhang_huimin56@126.com。

    通讯作者:

    雷国辉,E-mail:leiguohui@hhu.edu.cn

Limit analysis approach for stability of embankments on homogeneous soft soil

  • 摘要: 为评估均质软土地基上土堤的稳定性,假设地基土体沿圆弧形滑动面破坏,不排水抗剪强度随深度线性增加,并假设土堤材料沿对数螺旋线形滑动面破坏,采用黏聚力和内摩擦角描述其抗剪强度,基于上限定理,建立了一种稳定性分析方法,用于计算得到土堤的无量纲化的稳定数和稳定图,并确定土堤的最小安全系数和临界滑动面。采用本文方法对土堤失稳现场试验工程案例开展了计算分析,结果表明,所得到的最小安全系数与土堤的实测失稳条件吻合,最小安全系数与临界滑动面的计算结果也与变分极限平衡法和条分极限平衡法所得到的计算结果吻合良好。
    Abstract: The stability analysis is performed for the embankments founded on the ground of a homogeneous soft soil. The soft soil is assumed to fail along an arc-shaped surface. The undrained shear strength of ground soil is considered to increase linearly with depth. The embankment material is assumed to fail along a log-spiral surface. The cohesion and internal friction angle parameters are adopted for describing the shear strength of embankment soil. An approach for the stability analysis is thus derived by using the upper-bound theorem. It can be used to calculate the non-dimensional stability numbers and stability charts for the determination of the minimum factor of safety and the critical slip surface of embankment. A case study is carried out by using the proposed approach. The calculated minimum factor of safety satisfies the measured failure condition. A good agreement is also obtained between the minimum factor of safety and the critical slip surface calculated using the proposed approach and those calculated using the slice approach and the variational approach of limit-equilibrium analysis.
  • [1] LA ROCHELLE P, TRAK B, TAVENAS F, et al.Failure of a test embankment on a sensitive Champlain clay deposit[J]. Canadian Geotechnical Journal, 1974, 11(1): 142-164.
    [2] ZHOU H, DIAO Y, ZHENG G, et al.Failure modes and bearing capacity of strip footings on soft ground reinforced by floating stone columns[J]. Acta Geotechnica, 2017, 12(5): 1089-1103.
    [3] ZHENG G, YANG X, ZHOU H, et al.Numerical modeling of progressive failure of rigid piles under embankment load[J]. Canadian Geotechnical Journal, 2019, 56(1): 23-34.
    [4] 雷国辉, 张惠敏, 刘芳雪, 等. 成层软土地基上土堤填筑稳定性的塑性极限分析[J]. 岩土工程学报, 2018, 40(8): 1522-1527.
    (LEI Guo-hui, ZHANG Hui-min, LIU Fang-xue, et al.Plasticity limit analysis of stability of embankment fill on layered soft soil ground[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(8): 1522-1527. (in Chinese))
    [5] LESHCHINSKY D, SMITH D S.Deep-seated failure of a granular embankment over clay: stability analysis[J]. Soils and Foundations, 1989, 29(3): 105-114.
    [6] BAKER R.Determination of the critical slip surface in slope stability computations[J]. International Journal for Numerical and Analytical Methods in Geomechanics, 1980, 4(4): 333-359.
  • 期刊类型引用(4)

    1. 王亚辉. 深厚冲积地层护滩堤原型观测技术. 汕头大学学报(自然科学版). 2023(01): 13-22 . 百度学术
    2. 刘楠. 城市高边坡开挖稳定性分析及防护方案设计. 黑龙江交通科技. 2022(10): 58-60 . 百度学术
    3. 马江萍. 建筑垃圾-粉煤灰双掺混凝土桩地基处理性能研究. 粉煤灰综合利用. 2020(03): 67-71 . 百度学术
    4. 王迪,王宏权,王晓飞,徐惠民,张飞. 基于极限分析上限法双层土坡稳定性分析. 水利与建筑工程学报. 2020(04): 209-214 . 百度学术

    其他类型引用(5)

计量
  • 文章访问数:  273
  • HTML全文浏览量:  7
  • PDF下载量:  200
  • 被引次数: 9
出版历程
  • 收稿日期:  2019-04-28
  • 发布日期:  2019-07-19

目录

    /

    返回文章
    返回