| 斜拉桥纵飘频率简化计算方法 |
| |
| 引用本文： | 袁万城,闫冬.斜拉桥纵飘频率简化计算方法[J].同济大学学报(自然科学版),2005,33(11):1423-1427. |
| |
| 作者姓名： | 袁万城 闫冬 |
| |
| 作者单位： | 同济大学,桥梁工程系,上海,200092 |
| |
| 基金项目： | 上海市科技发展基金资助项目（03QF14052）;国家自然科学基金资助项目（50278068） |
| |
| 摘 要： | 在飘浮体系斜拉桥的单质点简化计算模型的基础上,提出了一阶纵飘振型的双质点简化分析模型和基本周期的简化计算公式,并结合某飘浮体系斜拉桥的例子,对两种简化计算方法进行了分析比较.数值分析结果表明,双质点模型的简化公式可有效弥补单质点模型的缺陷,为基本周期的估算提供了更为精确的估算方法,研究结果已在大跨度飘浮体系斜拉桥的抗震概念设计中成功应用.
|
| 关 键 词： | 斜拉桥 双质点模型 基频 |
| 文章编号： | 0253-374X（2005）11-1423-05 |
| 收稿时间： | 06 23 2004 12:00AM |
| 修稿时间： | 2004-06-23 |
Simplified Calculational Method of Floating Frequency for Cable-Stayed Bridges |
| |
| YUAN Wan-cheng,YAN Dong.Simplified Calculational Method of Floating Frequency for Cable-Stayed Bridges[J].Journal of Tongji University(Natural Science),2005,33(11):1423-1427. |
| |
| Authors: | YUAN Wan-cheng YAN Dong |
| |
| Institution: | Department of Bridge Engineering, Tongji University, Shanghai 200092, China |
| |
| Abstract: | Based on the single-mass simplified model, the double-mass simplified model and formulas for the basic period of the first-order longitudinal mode are presented in this paper. Combined with an example of a certain cable-stayed bridge, these two simplified methods are compared, which results in the fact that the formulas of the double-mass simplified model could make an effective improvement to the single-mass one, and provides a more precise estimating method for the basic period. The new model has been adopted in the conceptual seismic designs for long-span cable-stayed bridges. |
| |
| Keywords: | cable-stayed bridge double-mass model basic frequency |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
