AHP-ATA在电梯风险评估中的应用

电梯系统是城市建设中不可或缺的特种设备，其安全问题受工作系统中诸多因素的影响。为更好地量化分析电梯系统的安全性，对电梯系统进行风险评估，采用层次分析法（AHP）对电梯系统进行风险要素的权重分析，并引入事故树分析（ATA）技术系统地分析电梯运行中可能导致危险发生的事件，作为层次分析法指标权重的赋值依据。在其基础上，建立电梯系统风险评估模型，设定安全评定等级，通过加权求和的方法对电梯系统进行量化评估。该电梯系统风险评估体系避免了专家打分确定指标权重的主观性和片面性，结合故障树分析法以及层次分析法系统建立了电梯系统风险评估体系，为客观评价电梯系统安全等级提供了切实可行的方法和依据。

Application of AHP-ATA in Elevator Risk Assessment

To analyze the safety of elevator system quantitatively, the risk factor weights aiming at the risk evaluation for elevator system are analyzed based on Analytic Hierarchy Process (AHP) in this paper. The Accident Tree Analysis (ATA) is also introduced to analyze accidents leading to the dangers during elevator running as the basis of weight assignment. The risk evaluation model of elevator system is built and its safety grade is set. The quantitative assessment for elevator system through linear weighted sum law is implemented. This method combining AHP and ATA in this paper avoids subjectivity and one-sidedness of weights indexes caused by expert-scoring method. This elevator system risk evaluation system provides feasible method of assessing safety grade subjectively.