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| 基于振动台试验的曲线桥梁抗震性能研究 | |
| 引用本文： | 闫磊,李青宁,尹俊红. 基于振动台试验的曲线桥梁抗震性能研究[J]. 中国科技论文在线, 2014, 0(11): 1296-1300 |
| 作者姓名： | 闫磊 李青宁 尹俊红 |
| 作者单位： | 西安建筑科技大学土木工程学院; |
| 基金项目： | 国家自然科学基金资助项目(51078306);陕西省自然科学基础研究计划资助项目(2013JQ7007);高等学校博士学科点专项科研基金资助项目(20106120110004);西安建筑科技大学重大科技项目创新基金(ZX0901);陕西省重点学科建设专项资金资助项目(E01004) |
| 摘 要： | 为了研究S形曲线梁桥在地震作用下的动力响应及抗震性能，设计并制作一座相似比为1／20的S形曲线梁桥进行振动台试验研究。结果表明：在地震作用下，S形曲线梁桥的梁体未有明显损伤，桥墩出现裂缝，支座破坏严重；在墩底屈服之前，墩梁已发生较大相对位移，桥梁极易发生落梁破坏现象；桥墩在大震作用下的扭转耗能作用十分明显。在振动台试验基础上，对S形曲线梁桥提出一种“梁体漂浮抗震设计”的概念设计方法，为该类桥梁的抗震设计理论提供支持。 |
| 关 键 词： | S形曲线桥梁 振动台试验 模型设计 动力响应 漂浮抗震 |
Curved bridge seismic performance research based on the shaking table test |
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| Yan Lei,Li Qingning,Yin Junhong. Curved bridge seismic performance research based on the shaking table test[J]. Sciencepaper Online, 2014, 0(11): 1296-1300 | |
| Authors: | Yan Lei Li Qingning Yin Junhong |
| Affiliation: | (School of Civil Engineering , Xi＇an University of Architecture and Technology, Xi＇an 710055,China) |
| Abstract: | In order to study the dynamic response and the seismic performance of the S-shaped curve bridge,a 1/20 scale model of S-shaped curve bridge was designed and fabricated for shaking table test.Test results show that,during the earthquake,the beam of S-shaped curved bridge had no significant damage.However,some cracks appear in the piers,and the bearings was dam-aged seriously.Before the pier yield period,pier and beam has a larger relative displacement.The phenomenon of beam falling oc-curs easily andthe piers under earthquake reverses twist energy very obvious.On the basis of shaking table test,a conceptual de-sign which called“beam floating seismic design”was proposed to make a foundation for this kind of bridge seismic design theory. |
| Keywords: | S-shaped curve bridge shaking table test model design dynamic response floating seismic |
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