[1]李杰,李娜..自锚式悬索桥自由振动研究[J].郑州大学学报(工学版),2008,29(01):61-65.
　LI Jie,Li Na.Study on free vibration of self-anchored suspension bridge[J].Journal of Zhengzhou University (Engineering Science),2008,29(01):61-65.
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自锚式悬索桥自由振动研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
29
期数:
2008年01期
页码:
61-65
栏目:
出版日期:
1900-01-01

文章信息/Info

Title:
Study on free vibration of self-anchored suspension bridge
作者:
李杰; 李娜.
郑州大学,土木工程学院,河南,郑州,450001, 郑州大学,土木工程学院,河南,郑州,450001
Author(s):
LI Jie; Li Na
关键词:
自锚悬索桥;  自由振动;  泛函变分;  频率公式
Keywords:
文献标志码:
A
摘要:
悬索桥自振特性分析是研究悬索桥抗风、抗震以及其它动力效应的基础.考虑加劲梁的压弯效应,计入大缆倾角和纵向位移的影响,基于大位移不完全广义势能泛函分析,运用变分原理推导了双塔三跨连续自锚式悬索桥加劲梁的自由振动微分方程,并根据简化后的微分方程得到自锚式悬索桥纵向和竖向频率计算公式,最后通过两个算例验证公式基本合理.
Abstract:
The self-vibration characteristic analysis of suspension bridge is the basis for studying the wind, seismic and other dynamic effects of suspension bridge. Considering the bending effect of the stiffener beam, taking into account the influence of the inclination angle and longitudinal displacement of the large cable, based on the functional analysis of incomplete generalized potential energy of large displacement, the differential equation of free vibration of the stiffener beam of the two-tower three-span continuous self-anchored suspension bridge is derived by using the variational principle, and the longitudinal and vertical frequency calculation formulas of the self-anchored suspension bridge are obtained according to the simplified differential equation, and finally the formula is basically reasonable through two examples.

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更新日期/Last Update: 1900-01-01