Study and Trend on Conceptual Seismic Design for Bridges in China

Abstract eng:
This paper reviewed the research and prospect of bridge conceptual seismic design in China. Instead of doing seismic analyses for detail design, it is emphasized that the seismic design should be implemented early in the conceptual design phase. In this study, some bridge design schemes were proposed from the conceptual seismic design viewpoint, which included: i) bridge form selection method based on the dynamic characteristics; ii) seismic performance enhancement methods for a continuous girder bridge in the transverse direction; iii) design scheme of spatial pylon for a cable-stayed bridge to resist the maximum displacements and internal forces; and iv) seismic mitigation and isolation techniques and applications in China. Finally, the paper presented some research directions on the bridge conceptual seismic design.

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