Research On Risk Evaluation And Management Of Shield Construction In Suzhou Metro Line 4

With the acceleration of urbanization in China,the scale of the city has been expanding,and the subway has appeared on a large scale in many cities.As a result of its pollution,speed and high security,it has gradually become the main mode of travel.Shield method by virtue of the surrounding environment,small,high degree of mechanization,operable a wide range of construction advantages,widely used in subway construction projects.Due to the complexity of the construction environment,there are many hidden dangers in the process of shield construction,especially in recent years,the frequent occurrence of subway construction safety accidents,safety risk management issues have been more and more attention.Therefore,it is necessary to study the safety risk management of subway shield construction.At the same time,it deeply studies the meaning,procedure and constituent elements of the risk management of subway construction,and then summarizes the methods used by the previous experts and scholars for risk management,and then analyzes the current situation of risk management in the domestic and foreign.Based on this,this paper chooses the AHP method to select important evaluation indexes,establish the corresponding risk index system of shield construction,introduce the concept,principle and calculation steps of fuzzy comprehensive evaluation method Finally,the paper takes the shield construction project of Suzhou Rail Transit Line 4 as an example,and constructs the risk evaluation model according to the general situation of the project.According to the results of the judgment matrix,the risk level and level of the example are obtained.Summed up the need to focus on the control of the construction of the risk,and put forward some countermeasures for the domestic similar projects in the construction of safety risk management research to provide a reference.