摘要
在分析车-桥系统耦合振动研究资料的基础上,推导了基于自身假设条件下的车-桥系统耦合振动的运动方程组。利用VC++编制了可用于车-桥系统耦合振动分析的专业程序CQZD。以2座大桥为例,分析了桥梁基频对大跨PC连续刚构桥冲击系数的影响,并将算例中的冲击系数计算结果同按规范JTG D60—2004计算的结果进行了比较。结果表明:桥梁基频对冲击系数的影响比较显著,冲击系数随基频的降低而降低。
On the basis of analyzing data on vehicle-bridge system coupling vibration, the motional equation sets of vehicle-bridge system coupling vibration under the autologous assumption were deduced. What＇s more, making use of VC＋ ＋, a professional procedure CQZD was programmed which could analyze the vehicle-bridge system coupling vibration. Taking two bridges as example, the influence of bridge basal frequency on impact coefficient of PC continuous rigid frame bridges with long-span was analyzed. Impact coefficients calculated by calculated code JTG D60-2004 respectively were compared. Results show that influence of brid frequency on impact coefficient is obviously; impact coefficient decreases with increase frequency.
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
2008年第1期72-76,120,共6页
China Journal of Highway and Transport
基金
湖南省交通厅科技项目(200220)
关键词
桥梁工程
大跨PC连续刚构桥
车-桥系统耦合振动理论
冲击系数
基频
bridge engineering
PC continuous rigid frame bridge with long-span
theory of vehicle-bridge system coupling vibration
impact coefficient
basal frequency
