斜拉桥拉索-阻尼器系统非线性瞬态响应分析

陈水生; 孙炳楠; 冯义卿

斜拉桥拉索-阻尼器系统非线性瞬态响应分析

1.
华东交通大学土木建筑学院,南昌 330013;2.浙江大学建筑工程学院,杭州 310027;3.江西省公路开发总公司,南昌 330006

基金项目: 江西省自然科学基金资助项目(0350061)

详细信息

作者简介:
陈水生(1968- ),男,江西乐安人,副教授,博士,副院长,主要研究方向:结构动力学及结构振动控制(联系人.Tel:+86-(0)13907006807;Fax:+86-791-7046013;E-mail:chenpo.zju@263.net);孙炳楠(1943- ),男,浙江绍兴人,教授,研究所所长,博士生导师;冯义卿(1962- ),男,江西临川人,教授,总工程师.

中图分类号: O322；TU311.3
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- 被引次数: 0
出版历程
- 收稿日期: 2002-03-12
- 修回日期: 2003-12-02
- 刊出日期: 2004-06-15

Nonlinear Transient Response of Stay Cable With Viscoelasticity Damper in Cable-Stayed Bridge

1.
School of Architecture and Civil Engineering, East China Jiaotong University, Nanchang 330013, P. R. China;

摘要

摘要: 考虑索的抗弯刚度、垂度及几何非线性的影响，得出了索-阻尼器系统的空间非线性振动偏微分方程，用中心差分法将偏微分方程在空间内离散，导出了系统的非线性振动常微分方程组．结合Newmark法及虚拟力法提出了一种用于求解非线性振动瞬态响应的杂交分析算法．并以典型的斜拉桥拉索为研究对象，给出了数值算例，并与Runge-Kutta直接积分法进行了比较，说明了杂交算法的准确性及有效性．为大跨斜拉桥拉索的振动控制研究提供了一种简便、有效、快速的时程分析方法．
- 斜拉索 /
- 振动控制 /
- 粘弹性阻尼器 /
- 瞬态响应
Abstract: Taking the bending stiffness, static sag, and geometric non-linearity into consideration, the space nonlinear vibration partial differential equations were derived. The partical differential equations were discretized in space by finite center difference approximation, then the nonlinear ordinal differential equations were obtained. A hybrid method involving the combination of the Newmark method and the pseudo-force strategy was proposed to analyze the nonlinear transient response of the inclined cable-dampers system subjected to arbitrary dynamic loading. As an example, two typical stay cables were calculated by the present method. The results reveal both the validity and the deficiency of the viscoelasticity damper for vibration control of stay cables. The efficiency and accuracy of the proposed method is also verified by comparing the results with those obtained by using Runge-Kutta direct integration technique. A new time history analysis method is provided for the research on the stay cable vibration control.
- stay cable /
- transient response /
- vibration control /
- non-linearity

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参考文献(9)

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