SEISMIC DAMAGE DUE TO CURVATURE EFFECT ON CURVED HIGHWAY VIADUCTS
This paper investigates the possibility of pounding, deck unseating and tangential joint residual damage due to curvature effects. Furthermore, an evaluation of the effectiveness of the use of cable restrainers on the overall nonlinear seismic response of seismically isolated highway viaducts is presented. For this purpose, the bridge seismic performance has been evaluated on four different radii of curvature, 100m, 200m, 400m, and 800m, considering two cases: restrained and unrestrained curved viaducts. Depending on the radius of curvature, three-dimensional nonlinear dynamic analysis shows the vulnerability of curved viaducts to pounding and deck unseating damage. In this study, the effectiveness of the use of cable restrainers on curved viaducts is demonstrated. The restrainers not only provide a successful unseating protection but also allow the viaducts to behave uniformly despite the differences on the curvature radius, therefore mitigating the curvature effects.
Nonlinear dynamic response unseating prevention system seismic design
Carlos Mendez Galindo Toshiro Hayashikawa Daniel Ruiz Julian
Graduate Student, Graduate School of Engineering, Hokkaido University, Sapporo, Japan Professor, Graduate School of Engineering, Hokkaido University, Sapporo, Japan Former Graduate Student, Graduate School of Engineering, Hokkaido University, Sapporo, Japan
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）