桥梁新型横向金属阻尼器研究

沈星;倪晓博;叶爱君

振动与冲击 ›› 2014, Vol. 33 ›› Issue (21) : 96-101.

PDF(1814 KB)
PDF(1814 KB)
振动与冲击 ›› 2014, Vol. 33 ›› Issue (21) : 96-101.
论文

桥梁新型横向金属阻尼器研究

  • 沈星,倪晓博,叶爱君
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Research on Metallic Damper for Bridge in Transverse Direction

  • SHEN Xing , NI Xiao-bo , YE Ai-jun
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摘要

基于桥梁对横向金属阻尼器的抗震性能需求,在现有钢阻尼器研究成果的基础上,提出了一种适用于桥梁横向的新型金属阻尼器。然后阐明其力学性能,并提出了金属阻尼器的优化设计方法。最后,制作金属阻尼器试件进行了拟静力试验。研究结果表明,新型金属阻尼器具有很好的滞回耗能特性,滞回模型可采用等效双线性模型,同时具有很大的位移能力(漂移率大于50%),并且能够很好地适应地震过程中复杂的接触条件,不同三角形钢板具有很好的同步性。

Abstract

Based on seismic performance demand of bridge in transverse direction and current research work on metallic damper, a new type of metallic damper which can be used in transverse direction of bridge is now proposed firstly. Then, mechanic performance is explained and an optimized design method for metallic damper is introduced. Finally, a quasi-static test is carried out on two samples of designed metallic dampers. The results depict that this new type of metallic damper possesses a good property of hysteretic energy dissipation. And hysteretic model can adopt equivalent bilinear model. Moreover, the metallic damper presents large displacement capacity (drift ratio is larger than 50%) and can adapt to the complex contact condition during the ground motion fairly. In addition, different triangular steel plates exhibit perfect synchronism substantially.

关键词

金属阻尼器 / 横向抗震需求 / 桥梁横向 / 位移能力 / 滞回耗能

Key words

metallic damper / transverse seismic demand / transverse direction of bridge / displacement capacity / hysteretic energy

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沈星;倪晓博;叶爱君. 桥梁新型横向金属阻尼器研究[J]. 振动与冲击, 2014, 33(21): 96-101
SHEN Xing;NI Xiao-bo;YE Ai-jun. Research on Metallic Damper for Bridge in Transverse Direction[J]. Journal of Vibration and Shock, 2014, 33(21): 96-101

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