多塔自锚式悬索桥竖弯基频简化计算

英文篇名：Simplified Calculation of Primary Vertical Frequencies for Multi-tower Self-anchored Suspension Bridge
中文刊名：武汉理工大学学报(交通科学与工程版)
英文刊名：Journal of Wuhan University of Technology(Transportation Science & Engineering)
作者：张超
英文作者：ZHANG Chao(College of Civil Engineering ; Fuzhou University ; Fuzhou350108 ; China)
中文关键词：多塔悬索桥 ; 自锚式悬索桥 ; 频率计算 ; Rayleigh法 ; 竖弯基频
英文关键词：multi-tower self-anchored suspension bridge ; self-anchored suspension bridge ; frequency calculation ; Rayleigh method ; fundamental frequency of vertical vibration
出版日期：2013-08-15
机构：福州大学土木工程学院;
年：2013
期：04
出版单位：武汉理工大学学报(交通科学与工程版)

摘要

以多塔自锚式悬索桥为研究对象,基于能量原理,忽略影响悬索桥基频的次要因素,应用Rayleigh法推导了3塔自锚式悬索桥1阶反对称和正对称竖弯振型频率的简化计算公式,并以数值分析结果对比验证了简化公式的准确性.
In this paper,the multi-tower suspension bridge as taken as research object.Based on energy principles,the Rayleigh method is used to derive simplified formulas of primary vertical frequencies,whose modes are anti-symmetric and symmetrical vertical bending vibration.During derivation processing,some secondary effects of suspension bridge frequency factors are ignored.The accuracy of proposed formulas in this paper is verified by comparisons between the formulas and the finite element approach for a project.These formulas proposed in this paper can be used to calculate primary vertical frequencies for this kind of bridge.

引文

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