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基于可靠度理论的阻滑键加固渣土边坡多目标优化设计方法

王盈, 曾江波, 姚文敏, 李长冬

王盈, 曾江波, 姚文敏, 李长冬. 基于可靠度理论的阻滑键加固渣土边坡多目标优化设计方法[J]. 中国地质灾害与防治学报, 2020, 31(5): 88-97. DOI: 10.16031/j.cnki.issn.1003-8035.2020.05.12
引用本文: 王盈, 曾江波, 姚文敏, 李长冬. 基于可靠度理论的阻滑键加固渣土边坡多目标优化设计方法[J]. 中国地质灾害与防治学报, 2020, 31(5): 88-97. DOI: 10.16031/j.cnki.issn.1003-8035.2020.05.12
WANG Ying, ZENG Jiangbo, YAO Wenmin, LI Changdong. A method for reliability-based multi-objective optimization design of sliding resistant components in construction waste slope[J]. The Chinese Journal of Geological Hazard and Control, 2020, 31(5): 88-97. DOI: 10.16031/j.cnki.issn.1003-8035.2020.05.12
Citation: WANG Ying, ZENG Jiangbo, YAO Wenmin, LI Changdong. A method for reliability-based multi-objective optimization design of sliding resistant components in construction waste slope[J]. The Chinese Journal of Geological Hazard and Control, 2020, 31(5): 88-97. DOI: 10.16031/j.cnki.issn.1003-8035.2020.05.12

基于可靠度理论的阻滑键加固渣土边坡多目标优化设计方法

基金项目: 

国家自然科学基金资助项目(41472261和41702294);深圳市科技计划技术攻关项目(JSGG20160331154546471);中国地质大学(武汉)中央高校基本科研业务费专项资金资助项目(1810491A23)

详细信息
    作者简介:

    王盈(1995-),女,河南柘城人,硕士研究生,主要从事地质灾害防治及岩土工程等方面的研究。E-mail:wy-@cug.edu.cn

    通讯作者:

    李长冬(1981-),男,湖北云梦人,现任教授、博士生导师,主要从事工程地质和岩土工程方面的教学与科研工作。E-mail:lichangdong@cug.edu.cn

  • 中图分类号: U418.5+2

A method for reliability-based multi-objective optimization design of sliding resistant components in construction waste slope

  • 摘要: 随着城市建设的发展,渣土边坡的数量和规模急剧增加,渣土边坡的防控研究受到了广泛关注。针对渣土边坡人工分层堆填建筑余渣土体参数的不确定性,采用预埋阻滑键加固渣土边坡的方式,提出了基于可靠度理论的阻滑键多目标优化设计方法。考虑不同阻滑键潜在组合对渣土边坡预估破坏损失的影响,将渣土边坡的预估破坏损失、稳定安全性和加固设计成本作为设计目标,通过多目标优化理论确定帕累托前沿并计算其关节点,获得预埋阻滑键加固边坡的最佳设计方案。以深圳市某渣土边坡为例,计算结果表明,将破坏概率作为衡量阻滑键加固渣土边坡效果指标时,应在渣土边坡前缘预埋两组尺寸长3 m、间距5 m的阻滑键加固边坡。采用上述阻滑键设计组合加固该渣土边坡时,可实现该边坡预估破坏损失、设计成本和稳定性达到最佳平衡。
    Abstract: The quantity and scale of construction waste slopes increase rapidly with the development of urban construction, causing much concern on the prevention and control of construction waste slopes. The construction waste slope engineering is affected by artificial layering and the uncertainty of properties of the layered soil. To handle this problem, a multi-objective optimization design method of sliding resistant components in construction waste slopes is proposed. With this method, pre-construction of sliding resistant components at the bottom of the landfill is adopted. Consider the influence of different reinforcement strength on the estimated failure loss of construction waste slopes, the failure loss, stable security and the construction cost of construction waste slopes are selected as design objects. Based on the multi-objective optimization theory, the Pareto front is determined. Through calculating the knee point on this Pareto front, an optimal design of the sliding resistant components is derived. The method proposed herein is applied in a construction waste slope in Shenzhen and the result indicates that two groups of the sliding resistant components with 3 m and the 5 m are pre-constructed at the front of the slope to reinforce the landfill. With adopting the presented design, the stability, failure loss and reinforcement cost of the slope can be optimally balanced.
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出版历程
  • 收稿日期:  2020-01-08
  • 修回日期:  2020-02-28
  • 网络出版日期:  2021-01-21

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