Research On Safety Risk Dynamic Management Of Assembly Component Hoisting Construction Based On Information Technology

In recent years,prefabricated building is entering a favorable stage of development with the high-quality,low-polluting industrial production mode of factory prefabrication of construction parts and on-site assembly.The construction method of prefabricated buildings can eliminate a large number of hidden safety hazards caused by traditional cast-in-place construction methods,but its industrialized construction process,complex construction technology,and the overall level of assembly construction is not high,resulting in new construction risks,especially in the hoisting stage Tower crane operations have increased significantly,regardless of the lifting or installation process,there are multiple factors simultaneously acting on the construction system,and the risk coupling characteristics are obvious.Therefore,coupling analysis,effective assessment and management of the risk of the prefabricated hoisting construction risk system are key issues to be solved urgently.First of all,this thesis refers to the classification method of lifting and hoisting operations in the "Technical Code for Safety of Construction Hoisting and Hoisting Engineering" JGJ276-2012,and divides the prefabricated hoisting construction operations into preparation phase,implementation phase,and completion phase,using the work hazard analysis method to combine Text mining identifies risk sources in each operation stage,additional risk source analysis,potential hazards and consequences analysis,combing and integrating risk sources from four aspects: personnel risk,material risk,environmental risk,and management risk,and obtains assembly-type hoisting construction risks List of factors;on this basis,the method of combining Vensim software and CM model is used to analyze the coupling effect of risk factors from a qualitative and quantitative perspective;then,based on the decoupling idea,the risk management suggestions and countermeasures for assembly-type lifting construction are put forward.Secondly,in order to realize the dynamic management of the prefabricated component hoisting construction risk,a BP-neural network-based prefabricated hoisting construction risk assessment model is constructed,and the strong self-learning ability,adaptive ability and fault tolerance ability of the BP-neural network are used to simulate the coupling of risk factors.Effect,predict whether the possibility of risk occurrence is within the acceptable range,and formulate corresponding improvement measures for the factors related to the strong coupling level,until the risk is acceptable,then hoisting can be carried out;at the same time,a set of prefabricated hoisting construction is proposed for the above process Risk dynamic management process;on this basis,the introduction of BIM technology and Io T technology,information management of assembly-type hoisting construction,establishment and improvement of the assembly-type hoisting construction risk dynamic management system,and process management,hidden danger management,inspection and acceptance management The three modules are analyzed to realize the combination of pre-prevention and in-process control,so as to achieve the purpose of dynamic management of the risk factors of hoisting construction.Finally,take a resettlement housing project as an example for empirical analysis.The results show that the prefabricated hoisting construction risk assessment model is scientific,reasonable,reliable and effective,and in line with reality.The accuracy of the analysis results is also greatly improved,and BIM technology and Io T technology are applied.,It has realized the dynamic process management of prefabricated hoisting construction process management,hidden danger investigation,inspection and acceptance,etc.,and effectively improved the safety risk dynamic management level of the prefabricated building construction site.