| 非规则梁桥横向X形弹塑性阻尼器合理参数分析 |
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| 引用本文： | 项乃亮,李建中. 非规则梁桥横向X形弹塑性阻尼器合理参数分析[J]. 同济大学学报(自然科学版), 2015, 43(7): 0980-0986 |
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| 作者姓名： | 项乃亮 李建中 |
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| 作者单位： | 同济大学 土木工程防灾国家重点实验室，上海 200092,同济大学 土木工程防灾国家重点实验室，上海 200092 |
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| 基金项目： | 国家“九七三”重点基础研究发展计划（2013CB036302）;国家自然科学基金项目（51278371） |
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| 摘 要： | 提出采用X形弹塑性阻尼器(XSEPD)代替梁桥混凝土挡块,以控制梁体位移,减小下部结构地震反应.对板式橡胶支座(LRB)与X形弹塑性阻尼器的力与位移关系进行分析,并以一座典型非规则梁桥为例,通过参数分析探讨X形弹塑性阻尼器的不同布置方式对桥梁横向地震反应的影响规律.结果表明,通过适当选取X形弹塑性阻尼器的设计参数,可以有效控制墩梁相对位移,并能合理分配高低墩间所承受的地震力.
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| 关 键 词： | 非规则梁桥 板式橡胶支座(LRB) X形弹塑性阻尼器(XSEPD) 布置形式 设计参数 |
| 收稿时间： | 2014-07-12 |
| 修稿时间： | 2015-03-24 |
Analysis of Transverse X-shaped Elastic-plastic Damper's Proper Parameters on Irregular Girder Bridges |
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| XIANG Nailiang and LI Jianzhong. Analysis of Transverse X-shaped Elastic-plastic Damper's Proper Parameters on Irregular Girder Bridges[J]. Journal of Tongji University(Natural Science), 2015, 43(7): 0980-0986 |
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| Authors: | XIANG Nailiang and LI Jianzhong |
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| Affiliation: | State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China and State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | An X shaped elastic plastic damper (XSEPD) was used to replace the concrete shear key for girder displacement control and seismic response mitigation of substructures. First, the force displacement relationship of laminated rubber bearing (LRB) and XSEPD was analyzed. Then, the effect of different XSEPD layouts on transverse seismic response of the bridge was investigated through parametric study based on a typical irregular girder bridge. Results indicate that XSEPD can effectively control pier girder relative displacement and reasonably distribute seismic forces among piers if the proper design parameters are selected. |
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| Keywords: | irregular girder bridge laminated rubber bearing (LRB) X shaped elastic plastic damper (XSEPD) layout design parameter |
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