Abstract:

In order to improve the level of safety management in smart construction sites, it was necessary to establish a scientific and applicable evaluation index system and an evaluation model. Firstly, based on the trio spaces theory, the literature analysis method, the Delphi method and the field survey method were employed to construct a maturity evaluation index system of safety management in smart construction sites, including 5 first-level indicators and 24 second-level indicators. Secondly, the weights of these evaluation indicators were determined by the game theory-combination weighting method. A maturity evaluation model was then constructed based on the extension cloud theory, putting forward five maturity levels. Finally, the maturity evaluation model of safety management was applied to a smart construction site in Suzhou. The results show that the maturity score of safety management in this smart construction site is 78.304, with a standard level, which is consistent with the actual safety management condition on-site, and the validity and scientificity of this model are verified. Through the priority area improvement method, the repeated incidence of unsafe behavior of personnel, accuracy rate of dangerous behavior identification and early warning, closed-loop security inspection rate, allocation rate of intelligent security protection equipment and accuracy rate of equipment unsafe state monitoring and early warning should be improved first.

Key words: trio spaces, smart construction site, maturity level of safety management, combination weighting, extension cloud model