Fan Li-chu

Life cycle and performance based seismic design of major bridges in China

The idea of life cycle and performance based seismic design of major bridges is introduced. Based on the key components and non-key components of a bridge and the consideration of the inspectability, replaceability, reparability, controllability and retrofitability of the bridge components, different seismic design levels and expected performance objectives are suggested for the major bridges in China. The vulnerability analysis and progressive collapse analysis, as well as risk assessment, are also proposed to be the important issues to study in order to guide the seismic design of major bridges in the future.

The research on bridge structure seismic reliability in all life-cycle basing on the seismic intensity probability

Base on the analysis of structural seismic reliabilitys traditional calculation method, there are something was found Because of the rough correlation between earthquake ground acceleration and intensity in the traditional method, the seismic reliability calculation results were far from the earthquake damage facts. In this paper, an improvement which is the peak acceleration distributions discreteness relates with probability of seismic intensity was adopted, and an a amendatory seismic reliability formula was proposed which based on the peak ground motion acceleration distribution corresponding to the probability of seismic intensity. This method was also used for analyzed the seismic safety performance of a simply supported beam bridge.