Papers by Author: Guan Yuan Zhao

Abstract: In this research, damage spectra to quantify the damage of reinforced concrete (RC) bridges under earthquakes are proposed. The spectra are computed for hundreds of horizontal ground motions recorded during past several earthquakes. The damage spectra proposed are promising for performance-based seismic assessment of existing RC bridges as well as performance-based design of new systems.

Abstract: Two hollow rectangular bridge columns with Reactive powder concrete (RPC) were tested under a cyclically reversed horizontal load. Based on the test results, the seismic behavior of such columns was presented. An analytical model was developed to predict the force-displacement relationship of specimens. The test results were also compared to the proposed analytical model. It was found that the ductility factors of the specimens are over 4.0, and the proposed analytical model can predict the force-displacement relationship of such columns with acceptable accuracy.