ABSTRACT
Traditionally, bridge asset management has been primarily focusing on chronic aging-related deterioration, overlooking the impact of earthquake hazards. Despite extensive research on bridge deterioration and seismic risks, there’s a gap in combining both factors in life-cycle cost analysis (LCCA). This study introduces a framework integrating bridge condition deterioration and seismic risks in LCCA, thereby enhancing decision-making of highway bridges. Markovian deterioration process and probabilistic seismic damage analysis are integrated for time-dependent condition rating and seismic damage estimation. The proposed framework can quantify life cycle costs for different maintenance and retrofit strategies. In addition, the framework accommodates different risk perceptions with proposed weighting factors. A sensitivity analysis on a case-study bridge explores the influence of factors and local seismicity on LCCA, making this framework a valuable tool for risk-informed, long-term bridge asset management.
