基于MIDAS/CIVIL的拱桥上下部结构自振特性分析
摘要
上承式空腹式拱桥具有经济合理、造型美观等优点,是我国山区使用很广的一种桥型。本文运用MIDAS/CIVIL有限元软件建立既有上承式空腹式拱桥上下部结构整体的空间动力模型,并对其自振特性进行了分析。通过计算自振频率及对振型的分析,表明既有上承式空腹式拱桥上下部整体的动力性能满足要求。
On the spandrel arch bridge has the advantages of reasonable economy, beautiful appearance, is a bridge in the mountainous area of our country is widely used. In this paper, the MIDAS/CIVIL finite element software is used to establish the spatial dynamic model of the upper and lower structures of the upper and lower arch bridges, and the natural vibration characteristics are analyzed. By calculating the natural frequency and the vibration mode analysis, it shows that the dynamic performance of the upper and lower part of the existing arch bridge is satisfied.
On the spandrel arch bridge has the advantages of reasonable economy, beautiful appearance, is a bridge in the mountainous area of our country is widely used. In this paper, the MIDAS/CIVIL finite element software is used to establish the spatial dynamic model of the upper and lower structures of the upper and lower arch bridges, and the natural vibration characteristics are analyzed. By calculating the natural frequency and the vibration mode analysis, it shows that the dynamic performance of the upper and lower part of the existing arch bridge is satisfied.
引文
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[4]Hambly.Bridge Deck Behaviour[M].London.1982.
[5]邱顺冬.桥梁工程midas Civil常见问题解答[M].北京:人民交通出版社,2010,5.
[6]蔺鹏臻,刘世忠.桥梁结构有限元分析[M].北京:科学出版社,2008,6.
[2]戴公连,李德建.桥梁结构空间分析设计方法与应用[M].北京:人人民交通出版社,2001,10.
[3]midas Civil分析设计原理[P].北京:北京迈达斯技术有限公司.
[4]Hambly.Bridge Deck Behaviour[M].London.1982.
[5]邱顺冬.桥梁工程midas Civil常见问题解答[M].北京:人民交通出版社,2010,5.
[6]蔺鹏臻,刘世忠.桥梁结构有限元分析[M].北京:科学出版社,2008,6.