Pre-warning Decision-making Study Of Building Construction Safety Risk

As a pillar industry of national economic development,the construction industry has a significant impact on C hina's economic construction under the background of economic restructuring and modernization of construction industry.Compared with the level of foreign construction safety management,C hina's construction enterprises for the construction safety management level is relatively low,a serious lack of prior control,resulting in frequent accidents and a lot of economic losses,resulting in a serious impact on China's construction industry in the context of healthy and sustainable development The In this paper,based on a large number of literature research,this paper analyzes the present situation of safety risk early warning management of construction safety at home and abroad and summarizes the domestic research trends.In view of the safety risk of construction enterprises,due to the changing construction environment,workers and equipment vulnerable to all aspects of the impact of large work errors,resulting in construction safety risk early warning decision-making system presents complex and non-linear characteristics.The traditional safety risk assessment method is mostly based on qualitative analysis and can not be used directly to guide the early warning decision analysis of construction safety risk.Based on the comparative advantage of the system dynamics and early warning decision application,BIM and RFID information model Based on the model assumptions and the boundary of variables,a model of construction safety risk early warning simulation system based on flow graph is established.By combining the complex adaptive system theory and multi-agent modeling method,the interaction between each subject is established.The process of micro-level description of the system dynamics to improve the overall trend forecast,the construction safety risk prediction and control optimization process simulation.Based on the research status,the decision mechanism,the influencing factors,the information model and the empirical analysis,it is found that it is necessary to make the decision of the early warning decision system of the building construction safety risk early warning decision system.Organization,model and other aspects of the feasibility.The main conclusions are as follows:(1)The construction safety risk management can not only control and manage from the qualitative point of view,but also can achieve the better expected effect from the point of view of qualitative and quantitative combination.By establishing the construction safety early warning decision model,More clearly and intuitively analyze the direct cause and key factors that cause safety risk events and safety losses,and found that safety risk events and secur ity losses are mainly caused by personnel,equipment and safety inputs.(2)to improve the safety of construction investment and the quality of personnel attitude to the construction safety risk events and security losses have a direct positive effect;relying solely on construction enterprises self-restraint means to carry out construction safety risk events control,can only improve its Part of the safety management capabilities,government binding and punitive means of construction enterprises to control the safety risk of the occurrence of the principle and the bottom line,such as this security loss for more than 10 million yuan set threshold,beyond a certain range of enterprises to rectify and impose a corresponding penalty.(3)Through the establishment of early warning decision-making system architecture can be real-time information collection dynamic construction safety risk events to control and adjustment,by predicting the current technical program or construction program can result in quantitative analysis of the results,more intuitive to reflect the program value and practicality.(4)For the prediction analysis does not meet the expected construction plan through the BIM module,the corresponding program to adjust and then predict to achieve t he desired effect for the adjustment objectives,and a single warning model and simulation methods can not reach the purpose of early warning decision.(5)For the adjustment of the program,the key factors can be adjusted through the early-warning decision-making feedback loop and the early-warning decision-making model,which can directly and effectively achieve the adjustment goal and reduce the investment of the people's property of the construction safety and unfavorable factors.Program to adjust the targeted factors.The main innovations of this paper are as follows:(1)Combining BIM and other information technology and system dynamics to dynamically control the construction safety risk can effectively predict and reflect the impact of the current co nstruction plan on the follow-up work.(3)can be based on the prediction of the construction plan in the BIM model to adjust the formation of a circular mechanism to achieve early warning decision-making(2)the combination of qualitative and quantitative methods,the implementation of partial data dynamic assignment,improve the theory applied to practical feasibility purpose.