肇庆西江特大桥动力特性分析
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摘要
南广铁路肇庆西江特大桥为我国目前跨度最大(450 m)的钢箱提篮拱桥,根据大桥的结构特点,采用ANSYS建立了全桥空间有限元模型,利用分块兰卡斯方法计算了该桥的自振频率和振型,并探讨了拱肋内倾角对大跨度钢箱提篮拱桥动力特性的影响,可为该桥的健康监测、抗风和抗震分析提供前提条件和依据,并可为大跨度钢箱提篮拱桥的设计与动力特性研究提供参考。
Zhaoqing Xijiang Bridge on Nanning-Guangzhou Railway is a steel box x-style arch bridge with the largest span(450 meters) in China.Based on the construction drawings and structural characteristics,the spatial finite element model was established by ANSYS software,and the natural frequencies as well as vibration modes of the bridge were calculated with Lanbcos method.Besides,the influence of arch's introverted inclination angle to the dynamic properties of long-span steel box x-style arch bridge was discussed,which could not merely act as the premise of health monitoring,wind stability analysis and seismic analysis,but also provide reference for the design as well as dynamic behavior of long-span steel box x-style arch bridge.
Zhaoqing Xijiang Bridge on Nanning-Guangzhou Railway is a steel box x-style arch bridge with the largest span(450 meters) in China.Based on the construction drawings and structural characteristics,the spatial finite element model was established by ANSYS software,and the natural frequencies as well as vibration modes of the bridge were calculated with Lanbcos method.Besides,the influence of arch's introverted inclination angle to the dynamic properties of long-span steel box x-style arch bridge was discussed,which could not merely act as the premise of health monitoring,wind stability analysis and seismic analysis,but also provide reference for the design as well as dynamic behavior of long-span steel box x-style arch bridge.
引文
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[3]王新敏.ANSYS工程结构数值分析[M].北京:人民交通出版社,2007.WANG Xin-min.ANSYS Numerical Analysis of Engineer-ing Structures[M].Beijing:People Communication Press,2007.
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[6]周智辉,向俊,曾庆元.客运专线某钢管混凝土提篮拱桥列车走行性分析[J].铁道科学与工程学报,2008,5(1):46-50.ZHOU Zhi-hui,XIANG Jun,ZENG Qing-yuan.Analysisof train running performance on a basket handle archbridge of concrete-filled steel tube on passenger specialline[J].Journal of Railway Science and Engineering,2008,5(1):46-50.
[7]程海根,强士中.钢管混凝土提篮拱动力特性分析[J].公路交通科技,2002,19(3):63-65.CHENG Hai-gen,QIANG Shi-zhong.Dynamic property a-nalysis of concrete filled steel tubular(CFST)X archbridges[J].Journal of Highway and Transportation Re-search and Development,2002,19(3):63-65.
[8]王建军,周创理,邱夏平.大跨度钢箱提篮拱桥建模及动力特性分析[J].广西工学院学报,2007,18(2):37-40.WANG Jian-jun,ZHOU Chuang-li,QIU Xia-ping.Mod-eling and dynamic properties analysis of long-span x-style box-section arch bridge[J].Journal of Guangxi U-niversity of Technology,2007,18(2):37-40.
[2]户东阳.高速铁路大跨度钢箱提篮拱桥动力特性及地震响应分析[D].长沙:中南大学,2011.HU Dong-yang.Dynamic characteristics and seismic re-sponse analysis of large-span steel-box handle basketarch bridges on high-speed railway[D].Changsha:Central South University,2011.
[3]王新敏.ANSYS工程结构数值分析[M].北京:人民交通出版社,2007.WANG Xin-min.ANSYS Numerical Analysis of Engineer-ing Structures[M].Beijing:People Communication Press,2007.
[4]Nour-Omid,Bahram,Clough,Ray W.Bolock LanczosMethod for dynamic analysis of structures[J].EarthquakeEngineering&Structural Dynamics,1985,13(2):271-275.
[5]陈淮,张广坡,王艳,等.中、下承式拱桥自振特性分析[J].铁道科学与工程学报,2008,5(5):32-36.CHEN Huai,ZHANG Guang-po,WANG Yan,et al.Dy-namic property analysis of half-through and bottom-through arch bridge[J].Journal of Railway Science andEngineering,2008,5(5):32-36.
[6]周智辉,向俊,曾庆元.客运专线某钢管混凝土提篮拱桥列车走行性分析[J].铁道科学与工程学报,2008,5(1):46-50.ZHOU Zhi-hui,XIANG Jun,ZENG Qing-yuan.Analysisof train running performance on a basket handle archbridge of concrete-filled steel tube on passenger specialline[J].Journal of Railway Science and Engineering,2008,5(1):46-50.
[7]程海根,强士中.钢管混凝土提篮拱动力特性分析[J].公路交通科技,2002,19(3):63-65.CHENG Hai-gen,QIANG Shi-zhong.Dynamic property a-nalysis of concrete filled steel tubular(CFST)X archbridges[J].Journal of Highway and Transportation Re-search and Development,2002,19(3):63-65.
[8]王建军,周创理,邱夏平.大跨度钢箱提篮拱桥建模及动力特性分析[J].广西工学院学报,2007,18(2):37-40.WANG Jian-jun,ZHOU Chuang-li,QIU Xia-ping.Mod-eling and dynamic properties analysis of long-span x-style box-section arch bridge[J].Journal of Guangxi U-niversity of Technology,2007,18(2):37-40.
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