振动松弛对斜索参数振动的影响分析

吴庆雄; 罗秋芳; 王文平; 陈宝春

doi:10.6052/j.issn.1000-4750.2013.04.S005

振动松弛对斜索参数振动的影响分析

1.
福州大学土木工程学院,福建,福州 350108;
2.
福州大学至诚学院,福建,福州 350002

基金项目: 教育部“新世纪优秀人才支持计划资助”项目(NCET-13-0737); 福建省自然科学基金(杰青)项目(2012J06013)

详细信息

作者简介:
罗秋芳(1988―),女,福建人,硕士生,从事结构工程研究(E-mail:luoqf030@foxmail.com)；王文平(1984―),女,贵州人,讲师,硕士,从事桥梁工程研究(E-mail:wenping5556@163.com)；陈宝春(1958―),男,福建人,教授,博士,博导,从事桥梁与结构工程研究(E-mail:baochunchen@fzu.edu.cn).

通讯作者:
吴庆雄(1973―),男,福建人,研究员,博士,博导,从事桥梁与结构工程研究(E-mail:wuqingx@fzu.edu.cn).

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- 文章访问数: 277
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出版历程
- 收稿日期: 2013-03-31
- 修回日期: 2013-11-06
- 刊出日期: 2014-06-24

INFLUENCE ANALYSIS OF VIBRATION LOOSENING ON NONLINEAR PARAMETRIC VIBRATIONS OF INCLINED CABLES

1.
College of Civil Engineering, Fuzhou University, Fuzhou, Fujian 350108, China;
2.
ZhiCheng College, Fuzhou University, Fuzhou, Fujian 350002, China

摘要

摘要: 讨论了振动松弛对斜索参数振动的影响。从考虑弯曲刚度和垂度的斜索运动方程出发,通过有限差分法进行振动松弛的数值计算,分析振动松弛对斜索副不稳定区域和主不稳定区域参数振动响应的影响。结果表明：斜索发生参数振动时,振动松弛首先出现在斜索底端；出现压力时的最小支点激励幅值随斜索的倾角而改变；在小振幅支点激励作用下,小倾角斜索易在副不稳定区域出现振动松弛。
- 斜索 /
- 振动松弛 /
- 参数振动 /
- 抗弯刚度 /
- 有限差分法
Abstract: The effect of vibration loosening on the parametric vibrations of inclined cables is discussed. By the equations of motion considered the flexural rigidity and sag, vibration loosening is numerically calculated by the finite difference method, and the effect of vibration loosening on the principal unstable region and second unstable region of parametric vibration is analyzed. The results show that vibration loosening is generated first at the lower end when the parametric vibration of inclined cable occurs. The minimum support excitation that generates a compressive force varies with inclination angles. Under the support excitation with small amplitudes, vibration loosening easily occurs in the second unstable region of cables with a small inclination angle.
- inclined cable /
- vibration loosening /
- parametric vibration /
- flexural rigidity /
- finite difference method

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参考文献(17)

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文章访问数: 277
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振动松弛对斜索参数振动的影响分析

通讯作者: 吴庆雄(1973―),男,福建人,研究员,博士,博导,从事桥梁与结构工程研究(E-mail:wuqingx@fzu.edu.cn).

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出版历程

INFLUENCE ANALYSIS OF VIBRATION LOOSENING ON NONLINEAR PARAMETRIC VIBRATIONS OF INCLINED CABLES

计量

出版历程

目录

通讯作者:
吴庆雄(1973―),男,福建人,研究员,博士,博导,从事桥梁与结构工程研究(E-mail:wuqingx@fzu.edu.cn).