Research for Bridge Optimal Seismic Retrofitting Strategies

Abstract:

Two different retrofitting concepts, including anti-seismic (pier strengthening) and seismic isolation (replacing with isolation bearing) were applied to bridge seismic strengthening. Influence factors of post-retrofitting performance in bridge were determined by the following parameters: pier stiffness and isolation bearing stiffness. By finite element analysis of controlling one parameter, the post-retrofitting performance was evaluated and compared with respect to the strategy with another variable parameter and vice versa. Meanwhile, comparative analysis was concerned by economic factors: bridge importance, labor cost, material cost and transportation, construction period, etc. Quantified parameter and the “performance/cost” which was a popular index in engineering economy were applied to find the best point (it was an optimal retrofitting strategy point). It also served as a project case of using this methodology to testify the rationality and provided a practical reference for expert and scholar in the field of bridge seismic retrofit.

• Periodical: Advanced Materials Research (Volumes 671-674)
• Pages: 1356-1361
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.671-674.1356
• Online since: March 2013
• Authors: Peng He*, Sheng Lin Ge, Min Gang Zhai
• Keywords: Bridge Seismic Strengthening, Economy, Functionality, Isolation Bearing, Pier Retrofit

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