Research on Resilience Evaluation and Enhancement of Deep Foundation Pit Construction Safety System

Deep foundation pit (DFP) projects have been a high incidence area of safety accidents because their own danger and complexity. Therefore, it is necessary to study the resilience construction system. This paper systematically identifies key factors affecting deep based on analysis composition system (DFPCTSS), synergistic relationship its subsystems in face interference impact internal external disaster-causing factors, causal mechanism typical DFP emergent process resilience. A evaluation indicator four capacity dimensions prevention absorption, resistance, recovery, learning adaptation was constructed by using fuzzy Delphi method, which characterized emergence process. Then correlation weight indexes were analyzed DEMATEL–ANP boundary cloud parameters grade set according normal extension model, membership degree level calculated complete level. Finally, taking project metro station as an example, above model used evaluate system, suggestions for enhancement put forward. The results show that are consistent with actual situation project, conducive providing systematic method improvement countermeasures management from perspective