Research On Safety Risk Assessment Of High-rise Building Constructio

Compared with ordinary construction projects,high-rise construction projects require higher construction techniques,more advanced construction technologies and more complex organization and management.The traditional construction safety management mode cannot effectively reduce the safety risks faced by high-rise construction,so there is an urgent need to conduct a comprehensive and in-depth study on the evaluation of construction safety risks of high-rise construction projects.Firstly,we analyzed the safety problems and five major accident types of high-rise buildings with the characteristics of high-rise building construction,and conducted risk evaluation research based on the theoretical basis of high-rise building risk management.The WBS-RBS risk identification method with the characteristics of modular risk analysis is used to divide the high-rise building into multiple work units from top to bottom and coupled with the "4M" risk factors to build the WBS-RBS risk identification coupling matrix and compile the construction risk identification list.Secondly,the assignment principles of hierarchical analysis and entropy method are outlined,the risk evaluation index system is constructed based on RBS tree,and the weights of each risk index are determined through the combination of assignment.Then,based on the applicability and advantages of the fuzzy comprehensive evaluation method in dealing with risk problems,a fuzzy comprehensive evaluation model is constructed.Finally,construction safety risk evaluation is carried out for the Zhoushui shantytown(Lot B)renovation project based on it,and the construction risk level of the project as a whole and each risk index is derived,and targeted risk control measures are proposed for the factors with higher risk level.The study of this thesis can help construction units to consciously avoid potential risks faced in the construction process,improve the safety awareness and risk management of construction personnel,solve the problem of risk grading,and provide new ideas for risk management in high-rise building construction.