| 地震作用下公路桥梁碰撞的半主动控制研究 |
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| 引用本文： | 郭安薪,崔丽丽,李惠.地震作用下公路桥梁碰撞的半主动控制研究[J].地震工程与工程振动,2008,28(2):147-152. |
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| 作者姓名： | 郭安薪 崔丽丽 李惠 |
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| 作者单位： | 哈尔滨工业大学,土木工程学院,黑龙江,哈尔滨,150090 |
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| 基金项目： | 国家自然科学基金项目(50408011) |
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| 摘 要： | 针对地震作用下公路桥梁的碰撞问题,采用接触单元法模拟桥梁之间的碰撞作用,并在此基础上研究了采用磁流变阻尼器的公路桥梁碰撞的半主动控制方法。通过对某公路桥梁的数值模拟发现,地震作用下桥梁之间的相互碰撞,将大幅增加桥梁的绝对加速度响应。采用磁流变阻尼器的半主动控制系统能够较好地降低结构的地震响应和消除地震作用下的碰撞。
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| 关 键 词： | 公路桥梁 地震 碰撞 磁流变阻尼器 半主动控制 |
| 文章编号： | 1000-1301(2008)02-0147-06 |
| 修稿时间： | 2007年4月6日 |
Study on semi-active control of highway bridge pounding under seismic excitations |
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| GUO Anxin,CUI Lili,LI Hui.Study on semi-active control of highway bridge pounding under seismic excitations[J].Earthquake Engineering and Engineering Vibration,2008,28(2):147-152. |
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| Authors: | GUO Anxin CUI Lili LI Hui |
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| Abstract: | Aiming at the pounding problem of highway bridges under seismic excitations,this paper investigates the semi-active control of pounding suppression of highway bridges using magnetorheological dampers by modeling the colliding of the structures with contact element.Numerical simulation of a highway bridge indicates that the pounding between the adjacent segments of the bridge will significantly increase the absolute acceleration responses,and the semi-active control system with MR damper can effectively suppress the dynamic responses and the pounding of the structure. |
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| Keywords: | highway bridge seismic pounding MR damper semi-active control |
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