A Study on the Impact Coefficient of Traffic Flows on a Large Cable-Stayed Bridge in a Windy Environment
A Study on the Impact Coefficient of Traffic Flows on a Large Cable-Stayed Bridge in a Windy Environment
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大风环境下大型斜拉桥交通流影响系数研究
DOI：
10.1155/2014/124536
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发表时间：
2014-11
影响因子：
1.6
通讯作者：
W.S. Han
中科院分区：
文献类型：
--
作者：
L. Ma;D. J. Zhou;W.S. Han
通过开发风-车-桥耦合动力分析系统，研究了斜拉桥交通流冲击系数及其概率分布。分析了车桥耦合效应、行车速度、交通密度等影响碰撞系数的重要因素。研究了桥面抖振与车辆振动耦合作用对斜拉桥交通流冲击系数的影响。结果表明，车桥耦合效应和桥面粗糙度对斜拉桥的冲击效应有重要影响。考虑到交通流对桥梁的冲击系数具有随机性的特点，在大量样本的基础上，从概率分布的角度解释了行车速度和交通密度对桥梁冲击系数的影响。根据耦合动力分析的结果，建议苏通长江大桥等大跨度斜拉桥的冲击系数取25%。
By developing a wind-vehicle-bridge coupling dynamic analysis system, the impact coefficient of traffic flows on a cable-stayed bridge and its probabilistic distribution are studied in the paper. Some important influence factors of the impact coefficient, such as the vehicle-bridge coupling effect, traveling velocity, and traffic density, are analyzed. The influence of the coupling effect between a bridge deck’s buffeting and vehicles’ vibration on the impact coefficient of traffic flows on a cable-stayed bridge is paid due attention to. The results show that vehicle-bridge coupling effect and surface roughness exert important influence on the impact effect of a cable-stayed bridge. Considering that impact coefficient of traffic flows on a bridge bears the characteristics of randomness, the paper, on the basis of a large number of samples, interprets the influence of traveling velocity and traffic density in view of its probabilistic distribution. In view of results derived from the coupling dynamic analysis, it is suggested that the impact coefficient be 25% for all spans of a long cable-stayed bridge like the Sutong Yangtze Bridge.
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影响因子：
5.5
作者：
You‐lin Xu;W. Guo
通讯作者：
You‐lin Xu;W. Guo
DOI：
10.1061/(asce)0733-9445(1994)120:3(704
发表时间：
1994-03-01
期刊：
JOURNAL OF STRUCTURAL ENGINEERING-ASCE
影响因子：
--
作者：
CHANG, D;LEE, H
通讯作者：
LEE, H
影响因子：
3.6
作者：
M. Fafard;M. Laflamme;M. Savard;Mallikarjuna Bennur
通讯作者：
M. Fafard;M. Laflamme;M. Savard;Mallikarjuna Bennur
DOI：
--
发表时间：
2009
期刊：
China Journal of Highway and Transport
影响因子：
--
作者：
Han Wan-shui
通讯作者：
Han Wan-shui
影响因子：
3.6
作者：
Hongyi Li;J. Wekezer;L. Kwasniewski
通讯作者：
Hongyi Li;J. Wekezer;L. Kwasniewski