Abstract: In order to ensure construction safety for deep foundation pit of subway stations under influence of multiple factors, firstly, resilience concept of deep foundation pit was proposed. Then, time property and functional property of system resilience were stated based on which internal stress, degree of weathering, water level outside of pit, surface settlement, surrounding house settlement, column uplift, support axial force and inclination of wall were selected as evaluation indexes for resilience evaluation. Secondly, Euclidean distance method was used to comprehensively evaluate resilience and evaluation indexes were weighted by using coefficient of variation method to reduce influence of subjective factors. Finally, with deep foundation pit of a subway station in Nanning as a case, Euclidean distance was assessed to be 0.357 5 with corresponding resilience level 4.028. The results show that Euclidean distance method can assess quality of deep foundation pit of subway station under influence of various factors and evaluation results are consistent with the actual project.

Key words: metro station, resilience, Euclidean distance method, deep foundation pit, coefficient of variation method