采用中层减隔震体系高墩桥梁纵桥向抗震性能分析

发布时间：2018-05-24 10:09

本文选题：中层减隔震设计 + 延性设计　；参考：《结构工程师》2014年02期

【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。
[Abstract]:The traditional seismic design methods of bridges are divided into ductile seismic design and seismic isolation design. For bridge with high pier, ductile seismic method is usually adopted as the first choice, but the seismic isolation scheme which is easy to repair after earthquake is difficult to apply to bridge with high pier. In this paper, a new type of high pier mid-layer isolation system is proposed, that is, the bridge piers of general high-pier bridges are isolated in the middle of the bridge, and the isolation bearings are installed at the isolation points. The ductility design of the bridge is compared with that of a viaduct. The seismic effect of longitudinal bridge in traditional isolation design and middle isolation design. The results show that, compared with the ductility design and the traditional seismic isolation design, the seismic effect of the middle isolation design is more obvious than that of the ductility design and the traditional seismic isolation design in terms of "force" and "displacement". It can improve the adaptability of seismic isolation technology for high pier bridges.
【作者单位】：同济大学建筑设计研究院(集团)有限公司;
【基金】：国家自然科学基金资助项目(90915011,51278376)
【分类号】：U442.55

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