Research And Appliication Of Safety Risk Grading Control In Large-scale Metro Investment Construction Project

During the subway construction period over passenger line,safety risk management is related to the safety and progress of subway construction,and the safety and progress of subway construction largely determines the opening and operation time of the whole subway line,which plays a key role in the whole urban infrastructure construction network.Based on the site investigation and risk analysis,this paper identifies the possible risks in subway construction,verifies the rationality of the risk assessment model by means of analytic hierarchy process(AHP)(APH)and fuzzy comprehensive evaluation method,and evaluates the risk of deep foundation pit excavation during subway construction.At the same time,this paper studies the safety risk grading control system in subway construction period,and based on the risk assessment results of Harbin subway project,puts forward a set of safety risk grading control system based on information,hoping to strengthen the timely control and disposal of effective and reliable information on the project site by all construction management parties in order to guide the safety and rapid construction of subway project.