摘要
通过有限元软件Midas/Civil建模计算,对国内某矮塔斜拉桥进行动力特性分析,采用Lanczos法进行模态分析,列出了大桥的前几阶自振频率和相应的振型;分析研究桥塔高度、桥塔刚度和混凝土弹性模量3类参数对桥梁自振特性的影响,并对其规律进行分析讨论,为今后矮塔斜拉桥相关设计提供依据.
In order to analyze the dynamic characteristics of a short tower cable-stayed bridge in China,the first ten order natural vibration frequency and corresponding vibration mode of the bridge are listed through the finite element software Midas/Civil modeling calculation and the Lanczos method for modal analysis.In order to further study the influence of two kinds of parameters of bridge tower stiffness and concrete elastic modulus on the bridge’s natural vibration characteristics,its law is analyzed and discussed.The rules are analyzed and discussed to provide the basis for the design of low-pylon cable-stayed bridge in the future.
作者
王海龙
刘冬
徐永峰
徐志强
齐文斌
WANG Hai-long;LIU Dong;XU Yong-feng;XU Zhi-qiang;QI Wen-bin(Hebei Institute of Architecture and Civil Engineering,Zhangjiakou,Hebei 075000)
出处
《河北建筑工程学院学报》
CAS
2019年第2期1-6,15,共7页
Journal of Hebei Institute of Architecture and Civil Engineering
基金
河北省教育厅省级研究生创新资助项目:矮塔斜拉桥动力特性分析(CXZZSS2019152)
关键词
动力特性
模态分析
矮塔斜拉桥
自振频率
dynamic characteristics
the modal analysis
low tower cable-stayed bridge
natural frequency of vibration
