城市高架桥梁抗震设计

On Seismic Design of Urban Viaduct

从基于性能的桥梁抗震理念出发,选取典型的城市高架桥,通过研究其合理的抗震设防标准和性能指标,分别采用延性抗震设计和减隔震抗震设计进行分析。对比这2种方法在结构抗震性能及结构经济上的差异,表明减隔震抗震设计不仅可获得更优的抗震性能,还可有效地减低工程造价。

Thinking about the bridge seismic theory based on performance,choosing typical urban viaducts,ductility seismic design and seismic isolation design are adopted separately to make an analysis through studying reasonable seismic fortification criterion and performance index.After a comparison between the two methods on structure seismic performance and economy,the results can show that seismic isolation design not only can create better seismic performance and can reduce the project cost effectively.