摘要
根据曲线桥的结构特点,将曲线桥离散成多个无质量的曲梁单元和包含质量的刚体,刚体包含质量和转动惯量.应用传递矩阵法建立曲线箱形截面梁的振动传递矩阵,求解频率方程,得到曲线箱形梁桥的固有频率值和相应振型,分析其振动动态特性.
Transfer matrix method is applied in analyzing the box-shaped curves of the natural frequencies of the boxshaped curves bridge. According to the structural characteristics of the curved bridge, bridge is separated into multiple curves with the no-quality curved beam elements and rigids including quality and moment of Inertia. The vibration transfer matrix of box-shaped beam is established for solving the frequency equation ,obtaining the inherent frequency value and corresponding vibration mode about the curve box girder bridge. The paper also presents an analysis on the vibration dynamic characteristics of the curved box girder bridges.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
北大核心
2009年第4期518-523,共6页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
基金
陕西省自然科学基础研究计划项目(2005E236)
陕西省教育厅专项科研计划项目(05JK235)
关键词
曲线箱形梁桥
传递矩阵法
场传递矩阵
点传递矩阵
固有频率
curved box girder bridge
transfer matrix method
field transfer matrix
points transfer matrix
natural frequency
