Abstract: A resilience assessment approach is proposed for the construction safety of urban underground engineering adjacent to an operating metro. First, three key factors involved in close construction (existing underground structure, formation, and newly-built underground engineering) and two dimensions (technology and management) are analyzed, establishing a relatively complete resilience index system. Second, a weight combination analysis approach for the resilience index system is developed using the analytic hierarchy process, entropy weight approach, and game theory. Furthermore, a method for the continuous evaluation of the complex performance Q of the system is proposed based on the theory of set pair analysis. Finally, an evaluation formula for resilience R is proposed from the aspects of maximum damage and cumulative damage, which is then applied to the analysis of a case study. The main findings include: (1) The newly proposed resilience assessment method can be mutually verified with traditional risk assessment method, and the new method considers more comprehensive factors. (2) The composite performance Qof the proposed system contains three dimensions, namely, existing underground structure (Q_A), formation (Q_B), and newly-built underground engineering (Q_C), showing more comprehensiveness than the conventional assessment theory. (3) As the limits of dynamic indices of existing underground structures become increasingly stringent, the evaluation results of the system's composite performance Q correspond to a decrease.

Key words: urban underground engineering, close construction, resilience assessment, set pair analysis, case study