Risk assessment method of epidemic prevention and control in construction site
This study aims to establish a risk assessment model for epidemic prevention and control in construction sites to accurately and scientifically assess the risk level of epidemic prevention and control in construction sites.Firstly,a literature search,site investigation,and expert consultation were used to determine the epidemic prevention and control risk index system at the construction site,containing 4 first-class indicators and 17 second-class indicators.On this basis,the indicator weight questionnaire was prepared and distributed to the relevant experts who filled in according to the importance of indicators.After sorting out the collected questionnaire data,the Analytic Hierarchy Process(AHP)method and Reliability Interval Method(RIM)are used to comprehensively determine the weight of indicators at all levels.After then,according to the comprehensive evaluation method,with the membership function,the evaluation model of epidemic prevention and control level in the construction site was constructed.The risk evaluation grade was divided into five levels and quantified with specific figures.Finally,a construction project is taken as an example and the risk indicators were scored are scored by experts.According to the evaluation model,the risk level of epidemic prevention and control of the project was determined,which was convenient to find out the weak links leading to epidemic management and verify the effectiveness of the evaluation model.The results show that:the overall risk index of the project is 2.42,and the risk level is medium risk.Among them,the risk level of the prevention and control system is medium risk,the risk of site management is low,the risk of personnel management is high,and the risk of materials and equipment is medium.The result is consistent with the actual construction site,which shows the evaluation model can accurately and objectively reflect the risk level of epidemic prevention and control in construction sites and provides a new reliable method for the analysis and evaluation of epidemic prevention and control level at the construction site.
safety engineeringconstruction siteepidemic prevention and controlriskevaluation model
NETL
NSTL
万方数据
维普
