Life-Cycle Cost Evaluation of Bridge Structures Considering Seismic Risk

Abstract

This chapter introduces a life-cycle cost (LCC) analysis of bridge structures considering seismic risk. Recently, LCC has been paid attention as a possible and promising method to achieve a rational maintenance program. In general, LCC consists of initial cost, maintenance cost, and renewal cost. However, when considering LCC in the region that often suffers from natural hazards such as typhoons and earthquakes, it is necessary to account for the effects of such natural hazards. Using the probability of damage occurrence, LCC can be calculated for the bridge structures with earthquake excitations. The LCC analysis method proposed in this chapter can be applied to optimal maintenance planning by using genetic algorithms and can be extended to the life-cycle cost analysis of road network.

Risk-based seismic life-cycle cost–benefit (LCC-B) analysis for bridge retrofit assessment

“…Furuta et al [16] used multi-objective optimization techniques to evaluate bridge maintenance actions that minimize the life-cycle cost associated with both maintenance and seismic risk to a Japanese bridge pier. Cho et al [17] has compared the effectiveness of retrofit measures such as elastomeric bearings and restrainer cables on the basis of minimum life-cycle cost, primarily based on first order reliability methods for probabilistic seismic damage analysis and the use of 2-dimensional analytical models of steel bridges in Korea.…”