土木工程学报  2016, Vol. 49 Issue (5): 110-119    
  结构工程 本期目录 | 过刊浏览 | 高级检索 |
大跨度斜拉桥边墩新型横向钢阻尼器减震体系及设计方法
沈 星1 倪晓博1,2 叶爱君1
1. 同济大学土木工程防灾国家重点实验室, 上海 200092
2. 上海市政工程设计研究总院(集团)有限公司, 上海 200092
Seismic system and design method of transverse metallic yielding dampers on long-span cable-stayed bridge side piers
Shen Xing1  Ni Xiaobo1,2  Ye Aijun1
1. State Key Laboratory for Disaster Reduction of Civil Engineering, Tongji University, Shanghai 200092, China;
2. Shanghai Municipal Engineering Design Institute (Group) Co., Ltd., Shanghai 200092, China
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摘要 
针对大跨度斜拉桥边墩的横向抗震问题,提出桥梁新型横向钢阻尼器与滑动支座组合的一种边墩横向减震体系,以及基于桥梁实际抗震需求的减震
体系设计方法。之后,以一座主跨620m的大跨度斜拉桥为工程背景,验证该方法的可行性。并从关键位置的地震反应、阻尼器对横向基本控制振型的影响、
减震体系的耗能能力和地震动输入的影响等方面对边墩新型横向减震体系的减震效果进行全面分析。结果表明,大跨度斜拉桥边墩新型减震体系具有显著的
减震效果;与常规体系相比,对地震动输入较不敏感。
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沈 星 倪晓博 叶爱君
关键词  大跨度斜拉桥 边墩 横向 横向钢阻尼器 减震设计    
Abstract
Towards the transverse seismic problems of long-span cable-stayed bridge side piers, a new transverse seismic system of bridge
side pier, as a combination of bridge transverse metallic yielding dampers (TMYD) and sliding bearings, was proposed. Meanwhile, the
theoretical design method of TMYD was developed in consideration with actual seismic demand of bridge. Then, a practical cable-stayed
bridge with 660m main span was taken as an example to demonstrate the feasibility of this method. Furthermore, a complete analysis was
carried out for the new transverse seismic system of bridge piers from the following aspects, including seismic response of key parts,
effect of dampers on the transverse basic control vibration mode, energy-dissipation capacity of seismic system and effect of seismic
input. The results show that the new seismic system of long-span cable-stayed bridge side piers exhibits pronounced damping effect and
compared to the conventional system, the new system is insensitive to the seismic input.
Key wordslong-span cable-stayed bridge    side pier    transverse direction    transverse metallic yielding dampers    seismic design
    
引用本文:   
沈 星 倪晓博 叶爱君. 大跨度斜拉桥边墩新型横向钢阻尼器减震体系及设计方法[J]. 土木工程学报, 2016, 49(5): 110-119.
Shen Xing Ni Xiaobo Ye Aijun. Seismic system and design method of transverse metallic yielding dampers on long-span cable-stayed bridge side piers. 土木工程学报, 2016, 49(5): 110-119.
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