变权云模型在既有高速公路边坡健康评估中的应用研究  

Application of a variable weight cloud model in the slope health assessment of existing expressways

作　　者：杨娥[1] YANG E(School of Civil Engineering and Engineering Management,Guangzhou University of Navigation,Guangdong 410700,China)

机构地区：[1]广州航海学院土木与工程管理学院,广州410700

出　　处：《安全与环境学报》2024年第12期4552-4559,共8页Journal of Safety and Environment

基　　金：广东省教育厅项目(2023KTSCX111)。

摘　　要：为探究既有高速公路边坡健康评估指标权重对评估结果的影响,提出了基于变权理论和云模型相组合的健康评估方法,以为边坡预防性养护方案的制定提供科学参考。首先,在分析边坡健康影响因素基础上,建立结构和功能两个维度的健康评估指标体系;其次,基于主序法获取评估指标固定权重,并根据边坡健康检测指标实测值,利用变权理论修正固定权重,进而构建边坡健康评估变权云模型,体现健康评估动态性;最后,将评估方法应用于某高速公路边坡工程,研究两种权重下评估结果的差异,并通过敏感性分析指出对评估结果差异影响显著的指标。结果显示:不同权重下该边坡健康综合评估结果均为亚健康,相较于固定权重,变权云模型有靠近病危的趋势,体现了指标实测值对评估结果的动态影响。其中,具有影响显著的评估指标为边坡高度、岩块产状、内摩擦角、裂隙发育程度、渗透系数。为提升边坡预防性养护方案的效果,应重点改善这5项评估指标,以减缓边坡健康衰减趋势,维持边坡健康运营。To explore the influence of weights assigned to existing health assessment indicators on the evaluation outcomes for expressway slopes,this paper examines 16 indicators that affect slope health and refines their respective weights.Based on this analysis,a health assessment method is proposed that integrates variable weight theory with the cloud model.This approach offers a scientific basis for developing preventive maintenance plans for slopes.Firstly,through an analysis of the factors influencing slope health,we establish a health assessment indicator system that encompasses two dimensions:structural integrity and functional performance.Secondly,we establish fixed weights for the assessment indicators using the principal sequence method.Simultaneously,we adjust these fixed weights based on the measured values of the slope health detection indicators by applying variable weight theory.This process enables us to construct a variable weight cloud model for slope health assessment.This model captures the dynamic nature of health assessment.Finally,we apply this assessment method to an expressway slope project and analyze the differences in evaluation results between the two weighting schemes.Through sensitivity analysis,we identify the indicators that significantly influence variations in assessment results.The research findings reveal that,regardless of the weighting scheme applied,the comprehensive assessment results for slope health consistently fall within the sub-healthy category.Compared to the fixed weights,the variable weight cloud model demonstrates a trend toward a more critical condition,emphasizing the dynamic influence of the measured indicator values on the assessment results.It is noteworthy that the assessment indicators with a significant impact include slope height,rock occurrence,internal friction angle,degree of fracture development,and permeability coefficient.To enhance the effectiveness of preventive maintenance plans for slopes,this paper recommends prioritizing the improvement of these key a

关 键 词：安全工程 边坡工程 健康评估 变权 云模型 

分 类 号：X951[环境科学与工程—安全科学] U418.67[交通运输工程—道路与铁道工程]