摘要
行驶汽车的轴重和速度超出设计范围给双曲拱桥的动力性能造成了很大的影响,然而这方面的研究却很少.结合1座旧双曲拱桥,进行了实地车桥耦合振动试验,得出了车速与动力系数、冲击系数之间的关系,以及车辆荷载作用下桥梁振动的规律;同时对旧桥进行了参数分析,并据此进行了裸拱状态的理论耦合振动分析,得出了一些结论,可为以后双曲拱桥的评估及加固设计提供参考.
The influence of dynamic performance of Double Arch Bridge about gross rail load on axle and speed has not been studied.Combined with the old double arch bridge,author has carried out a test of vehicle-bridge coupling vibration.Through the test,the correlation between dynamic coefficient and speed,the correlation between impact coefficient and speed,the rule of bridge virabration have been found.After the test, through the analysis of parameters,author has carried out a vehicle-bridge coupling vibration of naked arch and have some conclusions,it can provide a reference to reinforcement design of double arch bridge for some engineers.
出处
《湖南城市学院学报（自然科学版）》
CAS
2010年第4期12-16,共5页
Journal of Hunan City University:Natural Science
关键词
车桥耦合振动
试验
动力系数
冲击系数
Vehicle-Bridge Coupling Vibration
test
dynamic coefficient
impact coefficient
