Study On Construciton Safety Risk Assessment Of Deep Foundation Pit Project Based On AHP-FCE

In today’s society,due to the accelerated pace of urbanization and urbanization,a large number of people have poured into the city,resulting in a lack of living and activity space on the ground.Therefore,people have turned their attention to the underground.In this situation,foundation pit engineering construction has also received increasing attention,and foundation pit engineering has developed towards large,deep,tight,and complex aspects.Deep foundation pit engineering is a relatively complex project,involving a wide range of disciplines,and complex systems.In the process of dealing with this project,once there is a mistake,it may cause extremely significant casualties and incalculable losses.However,in terms of safety risk assessment for deep foundation pit construction,there is a lack of theory,which is far from keeping up with the rapid development of deep foundation pit engineering.As a result,there are more and more potential safety hazards in construction,it is urgent to establish a model for safety risk assessment for deep foundation pit construction.This article first introduces the research background of deep foundation pit engineering risk at home and abroad,then expounds the relevant concepts of deep foundation pit engineering,and analyzes and studies its construction content and characteristics.The deep foundation pit engineering is divided into four parts: survey,design,construction,and monitoring.Based on the results learned from the construction content and characteristics of deep foundation pit engineering,the risk identification and risk indicator system for the construction safety of foundation pit engineering are established through the Delphi method.Then,according to the relevant theories of risk assessment,a safety risk assessment model for deep foundation pit construction based on analytic hierarchy process and fuzzy comprehensive evaluation method is constructed.Finally,taking a deep foundation pit project of China Resources Construction as the evaluation object,through the risk assessment indicator system and risk assessment model constructed above,and based on the risk assessment calculation results,suggestions and measures to address risks are given.The effectiveness of the risk assessment model is also verified.This article uses a research method that combines theoretical research and case analysis to conduct qualitative and quantitative analysis of safety risks in deep foundation pit construction by constructing an AHP-FCE risk assessment model,helping all parties involved in the construction to better establish a risk control system in deep foundation pit construction and providing a reference basis for risk management in deep foundation pit construction.