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中文摘要：
传统的桥梁抗震设计方法分为延性抗震设计和减隔震设计两类.对于高墩桥梁来说,通常采用延性抗震方法作为首选方案,而震后易修复的减隔震方案对高墩桥梁较难应用.提出一种新型高墩中层减隔震体系,即将一般高墩桥梁的桥墩在中部隔断,在隔断处设置减隔震支座,以某高架桥为背景,对比了延性设计、传统减隔震设计与中层减隔震设计的纵桥向抗震效果.研究表明,从“力”与“位移”两方面来看,相较于延性设计和传统减隔震设计,高墩桥梁采用中层减隔震设计的抗震效果更为明显,可以提高高墩桥梁采用减隔震技术的适应性.
英文摘要：
Ductility seismic design and seismic isolation design are two major seismic design methods for bridges. In the seismic design of high pier bridges, the ductility seismic design is a preferred method, since the seismic isolation design is difficult to apply although it is easy to repair after earthquakes. In this paper, a new seismic design method called the middle-seismic-isolation design is presented, in which seismic isolation bearings are deployed in the middle of high piers. Seismic performances of bridges by using the ductility seis- mic design, the seismic isolation design, and the middle-seismic-isolation design are compared with a practical viaduct project. The results indicate that the seismic performance of the bridge with the middle-seismic-isola- tion design, in terms of force and displacement, is significantly better. By this approach, the seismic isolation design could be applied to a broader range of bridges with high piers.
同期刊论文项目
同项目期刊论文
Experimental Studies on Seismic Performance of Subsidiary Piers of Long-Span Cable-Stayed Bridge wit
Study on Dynamic Characteristics of Long Span Continuous Bridge from Construction to Completion Cons
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