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司宪志,宁宇,石崇,黄青富,张一平.基于连续-非连续方法的高填方边坡变形稳定性分析[J].河北工程大学自然版,2021,38(2):53-60
基于连续-非连续方法的高填方边坡变形稳定性分析
Study on Deformation Stability of High Fill Slope Based on Continuous-discontinuous Coupling Method
投稿时间:2021-02-17  
DOI:10.3969/j.issn.1673-9469.2021.02.009
中文关键词:  连续-非连续耦合  高填方边坡  强度折减法  边坡稳定性
英文关键词:continuous-discontinuous coupling method  high fill slope  strength reduction method  slope stability
基金项目:国家重点研发计划项目(2017YFC1501100);国家自然科学基金面上项目(51679071)
作者单位
司宪志 河海大学 岩土工程研究所, 江苏 南京 210098 
宁宇 中国电建集团昆明勘测设计研究院有限公司, 云南 昆明 650051 
石崇 河海大学 岩土工程研究所, 江苏 南京 210098 
黄青富 中国电建集团昆明勘测设计研究院有限公司, 云南 昆明 650051 
张一平 河海大学 岩土工程研究所, 江苏 南京 210098 
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中文摘要:
      为研究高填方边坡的稳定性,基于连续-非连续耦合分析理论,采用边界墙耦合方法建立了高填方边坡的连续-非连续耦合分析模型,利用强度折减的方法来简化降雨工况,参照实际滑坡工程案例,土体参数应折减15%,进行了降雨影响下的高填方边坡稳定性分析;对细观参数进行折减,求解得到边坡的安全系数为1.60,分析了边坡在极端工况下可能的变形破坏情况。通过该案例探究了连续-非连续耦合方法进行边坡稳定性分析的可行性。结果表明,连续-非连续耦合方法能够快速高效且直观地评估高填方边坡的稳定性。
英文摘要:
      In order to study the stability of high-fill slopes, based on the continuous-discontinuous coupling analysis theory, a boundary wall coupling method was used to establish a continuous-discontinuous coupling analysis model for high-fill slopes, and the strength reduction method was used to simplify rainfall conditions. Based on the actual landslide engineering cases, the soil parameters should be reduced by 15%, and the stability analysis of the high-fill slope under the influence of rainfall was carried out; by reducing the mesoscopic parameters, the safety factor of slope was obtained as 1.60. The possible deformation and failure of the slope under extreme conditions were analyzed. Through this case, the feasibility of the continuous-discontinuous coupling method for slope stability analysis was explored. The results show that the continuous-discontinuous coupling method can quickly, efficiently and intuitively evaluate the stability of high-fill slopes. The research conclusions can provide references for the application of continuous-discontinuous numerical simulation in geotechnical engineering.
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