| CFRP索大跨斜拉桥的非线性地震响应控制分析 |
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| 引用本文： | 周士金,刘荣桂,蔡东升,陈妤,邓程远.CFRP索大跨斜拉桥的非线性地震响应控制分析[J].中国公路学报,2011(3). |
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| 作者姓名： | 周士金 刘荣桂 蔡东升 陈妤 邓程远 |
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| 作者单位： | 江苏大学土木工程系;镇江市规划设计研究院; |
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| 基金项目： | 国家自然科学基金项目(51078170) |
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| 摘 要： | 为探讨碳纤维增强塑料(CFRP)索斜拉桥与普通钢索斜拉桥的地震响应控制优劣性,基于现有试验,以苏通长江公路大桥为参考建立有限元模型,采用等轴向刚度准则换索,并在墩梁、塔梁处设置弹性连接装置和阻尼器作为减震装置;基于弹塑性抗震理论和地震响应分析结果,通过对目标函数作参数敏感性分析,获得不同配索斜拉桥对应于各减震装置的合理设计参数,并比较2种索斜拉桥减震控制的优劣。结果表明:选取相同减震设计参数时,CFRP索斜拉桥可获得较优的减震效果;阻尼器的减震效果比弹性连接装置更优,尤其在内力控制方面。
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| 关 键 词： | 桥梁工程 斜拉桥 地震响应控制分析 CFRP索 减震装置 |
Nonlinear Seismic Response Control Analysis of Long-span Cable-stayed Bridge with CFRP Cables |
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| ZHOU Shi-jin,LIU Rong-gui,CAI Dong-sheng,CHEN Yu,DENG Cheng-yuan.Nonlinear Seismic Response Control Analysis of Long-span Cable-stayed Bridge with CFRP Cables[J].China Journal of Highway and Transport,2011(3). |
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| Authors: | ZHOU Shi-jin LIU Rong-gui CAI Dong-sheng CHEN Yu DENG Cheng-yuan |
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| Institution: | ZHOU Shi-jin1,2,LIU Rong-gui1,CAI Dong-sheng1,CHEN Yu1,DENG Cheng-yuan1(1.Department of Civil Engineering,Jiangsu University,Zhenjiang 212013,Jiangsu,China,2.Zhenjiang Urban Planning and Design Research Institute,Zhenjiang 212001,China) |
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| Abstract: | In order to explore and discuss advantages and disadvantages of seismic response control of the long-span cable-stayed bridge with carbon fiber reinforced plastics(CFRP) cables and conventional cable-stayed bridge with steel cables,taking Sutong Yangtze River Bridge as a reference,the finite element model was established on the basis of existing test.Steel cables were replaced with the CFRP cables by using the axial stiffness equivalent principle in the model.The elastic link device and the damper were set ... |
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| Keywords: | bridge engineering cable-stayed bridge seismic response control analysis CFRP cable seismic reduction device |
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