ABSTRACT
As the service life of urban electric power tunnels extends, the number of structural defects increases due to the combined effects of external water and soil loads, leading to a gradual decline in the service performance of the tunnels. A review of literature related to the structural performance of power tunnels was conducted, leading to the construction of an index set for the structural performance chain evolution. From this, a structural performance chain evolution network for power tunnels was established, focusing on four key factors: vulnerability, attributes, response, and damage. The plausibility of this evolutionary network was validated using data from a comprehensive structural inspection of a power tunnel in Shanghai in 2020. Analyze the structure of structural performance chain evolution network of power tunnels and get the key indexes of structural performance evolution. A power tunnel maintenance strategy based on the control of key indexes is proposed.
