摘要
城市高架桥梁的车-桥耦合振动属于随机振动范畴,目前无法采用确定性方法和手段而只能用统计规律来解决。现阶段车-桥耦合振动的研究已由早期以现场实测为主发展为以理论分析为主,辅以现场实测进行验证。通过对南京市内某高架桥梁进行动载试验,测试桥梁的动力特性及不同行车荷载状态下的动态响应,并与理论分析结果进行对比,结果表明:随着车速的提高,桥梁响应呈波动状上升;桥梁结构自振频率及动态响应的实测值与理论计算值基本一致。
The vehicle-bridge coupled vibration of viaduct and the environment vibration are both attributed to random vibration which can＇t be solved by some certain method. The study method of vehicle-bridge coupled vibration has changed from field measurement to theoretical analysis verified by field measurement. Through the dynamic experiment of a viaduct bridges in Nanjing, got the dynamic characteristic and response of the bridges. Results showed that： the dynamic response of bridge is increasing with the increasing of speed, the results are accord with theoretical analysis, so the data of the experiment is credible, and the theoretical analysis is feasible also.
作者
彭宇
吕德鹏
PENG Yu;LYU De-peng(Office of the Peoploe＇s Government of Jiangsu Distric in Nanjing,Nanjing Jiangsu 210019 China;Nanjing Gongda Construction Engineering Technology,Nanjing Jiangsu 210009 China)
出处
《江苏建筑》
2018年第5期71-74,83,共5页
Jiangsu Construction
关键词
车-桥耦合振动
动载试验
动力特性
动力响应
vehicle -bridge coupled vibration
dynamical loading test
dynamical characteristic
dynamical response
