基于粗糙集最优解山区公路边坡防护效果评价  

Evaluation of Slope Protection Effect of Mountain Roads Based on the Optimal Solution of Rough Set

作　　者：乔建刚 刘翔 耿斌斌 QIAO Jiangang;LIU Xiang;GENG Binbin(School of Civil Transportation Engineering,Hebei University of Technology,Tianjin 300401,China;Zhongjiaojian Jijiao Expressway Investment Development Co.,Ltd.,Shijiazhuang 050000,China)

机构地区：[1]河北工业大学土木与交通学院,天津300401 [2]中交建冀交高速公路投资发展有限公司,石家庄050000

出　　处：《北京工业大学学报》2024年第7期854-863,共10页Journal of Beijing University of Technology

基　　金：国家重点研发计划资助项目(2017YFC0805404);国家安全生产监督总局科技项目(hebei-0009-2017AQ)。

摘　　要：为系统有效评估不同边坡防护技术的护坡效果,通过调查大量护坡技术对边坡沿线生态环境、边坡特性等的影响,以粗糙集理论和条件信息熵为基础,分析护坡效果与稳定性、抗侵蚀性等因素的相互关系,结合最优解优化评价指标重要度,提出了一种适用于山区公路边坡防护效果的指标权重确定方法。构建了边坡防护效果评价体系。运用模糊理论和模糊综合评价理论,建立了山区公路边坡防护效果模糊综合评价方法。依托某山区实体边坡对常见的11种护坡技术分析得到:生态混凝土护坡技术和土工网植草防护技术的护坡效果最优。对生态混凝土和土工网植草组合防护技术进行仿真计算,得到边坡水平最大位移和最大剪应变分别降低66.21%和90.17%,边坡稳定性系数从1.252提高到1.351,符合规范要求,为山区公路边坡防护技术的优选提供了新的思路。To systematically evaluate the slope protection effect of different slope protection technologies,by investigating the influence of a large number of slope protection technologies on the ecological environment and slope characteristics along the slope,based on the rough set theory and conditional information entropy,the correlation between slope protection effect and stability,erosion resistance and other factors was analyzed,combined with the importance of the optimal solution optimization evaluation index,an index weight determination method suitable for the slope protection effect of mountainous highways was proposed,and a slope protection effect evaluation system was constructed.Using fuzzy theory and fuzzy comprehensive evaluation theory,a fuzzy comprehensive evaluation method for the protection effect of mountain highway slope was established.Relying on the analysis of 11 common slope protection technologies on a mountainous physical slope,it was obtained that the slope protection effect of ecological concrete protection technology and geonet grass planting protection technology was the best.The combined technology of ecological concrete and geogrid grass planting was simulated and calculated.It was found that the maximum horizontal displacement and maximum shear strain of the slope were reduced by 66.21%and 90.17%,respectively,and the stability coefficient of the slope increased from 1.252 to 1.351,which meet the requirements of the specification.This study provides a new idea for the optimization of slope protection technology for mountain highways.

关 键 词：山区边坡 防护效果评价 最优解 粗糙集 指标体系 模糊理论 

分 类 号：U416.3[交通运输工程—道路与铁道工程]