Earthquake response analysis of isolated bridge structures under the multiple seismic ground motion inputs;

Research on displacement-based non-iterative design method for the isolated bridge;

Shaking table experiment study of bridge isolation system (IV) exploration on design method of isolated bridge;

To develop an ideal bearing for bridge seismic isolation,mechanical properties tests on square lead rubber bearings are conducted,and the experimental data are in agreement with the rubber bearings theoretical formulae analysis results,which can provide references to design square lead rubber bearings.

Shaking table test study of bridge isolation system (III)──An analysis of measured results;

Shaking table test study of bridge isolation system (Ⅱ) ──An introduction to main measured results;

Shaking table test study of bridge isolation system(Ⅰ) ──Test Significance and model design;

The responses of lead rubber bearings(LRB) isolated bridges impacted by over-height trucks are worth further research.

In order to investigate the nonlinear seismic responses of isolated bridges with lead rubber bearings (LRB) under multi-directional horizontal earthquake excitation, Bouc-Wen model of LRB under two horizontal orthogonal directional excitation is adopted.

Combined with the construction practice,the paper introduced a kind of technique of bridge support replacement for reference.

Part of research work and development of technology of prestressed concrete carried out in China Academy of Railway Sciences in the past forty years or more is briefly reviewed, such as the research about fundamental parameters, the experiments and applications of new materials and structures as well as the development of new bridge supports.