Research On Safety Risk Assessment Of Highway Construction

The birth of the expressway meets the fast-paced lifestyle of contemporary society and meets the needs of people to travel conveniently.With the continuous proliferation of highway mileage data and the speed of its construction,the emergence of security accidents is endless,and it is not uncommon.It brings great grief,huge economic losses and endless security risks after operation.The construction period of the expressway is long,the mobility of the workers is strong,the coverage of the operation is wide,and the construction environment is relatively harsh.The procedures are intricate and the crosswork is numerous.This increases the difficulty of safety management and scheduling on the construction site.The reason for frequent safety accidents,the research on highway safety risk assessment can identify the factors that cause safety accidents from the source,and constantly supervise the identified factors to reduce the probability of safety accidents.Therefore,this paper takes the Wanzhou section of the Enguang Expressway as an example,analyzes the safety technology of its construction,builds a safety risk evaluation index system,and uses the gray correlation and white weighting fuzzy comprehensive evaluation method to evaluate its risk.The main research contents and results are as follows:1.Based on the safety risk sources of highway construction,the main influencing factors of the highway are identified,and the main key factor system of safety risk sources is constructed by using the analytic hierarchy process.2.Applying gray correlation analysis theory and combining risk factor expert scoring method,a highway construction safety risk evaluation system was constructed.The evaluation system can perform correlation analysis on each risk influencing factor to obtain the corresponding correlation degree,avoiding the isolation of risk factors in engineering analysis.Combined with the white weighted fuzzy comprehensive evaluation method,the safety risk level of the highway is rated.3.Using the constructed highway construction safety risk assessment system,taking the Enzhou-Guangzhou Expressway Wanzhou section as a project example,using the analytic hierarchy process to identify five safety risk categories and 23 major key safety risk factors,and construct construction Security risk evaluation index system.Using the grey comprehensive whitening right fuzzy comprehensive evaluation method,the overall safety risk of the project implementation process and the risk of each influencing factor were evaluated in detail,and the overall risk level of the project and the safety risk level of each factor were obtained.4.According to the ranking results of the safety risk factors evaluation of the Enzhou-Guangzhou Expressway Wanzhou section,corresponding risk countermeasures are proposed for the high-risk risk factors,high-risk factors and medium-risk factors of the project.