Seismic Fragility Assessment of Cable-Stayed Bridges Crossing Fault Rupture Zones
نویسندگان
چکیده
Current studies lack probabilistic evaluations on the performance of fault-crossing bridges. This paper conducts seismic fragility analyses to evaluate cable-stayed bridges with effects fault ruptures. Synthetic across-fault ground motions are generated using existing simulation methods for low-frequency pulses and high-frequency residuals. Incremental dynamic analysis is utilized generate responses bridge. The optimal intensity measure (IM) a bridge that crosses identified based coefficient determination (R2). Root-mean-square velocity (Vrms) found be best IM traversed by ruptures, instead commonly used ones such as peak acceleration or (PGA PGV). Fragility curves critical components bridges, including pylons, cables, bearings, developed Vrms, subsequently compared those near faults. Results show bearings transition piers most vulnerable component because rotation their girder. Compared faults, pylons more in transverse direction crossing whereas vulnerability cables comparable.
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ژورنال
عنوان ژورنال: Buildings
سال: 2022
ISSN: ['2075-5309']
DOI: https://doi.org/10.3390/buildings12071045