摘要
针对桥梁上时变移动车载 ,提出了两种桥梁模型、四种移动车载间接识别方法和两种不同解决方案 ,并通过模型实验对上述不同桥梁移动车载解决方案进行验证。仿真和试验结果表明 :虽然各种车桥参数对识别结果都有不同程度的影响 ,但每种解决方案都能有效识别桥梁移动车载且以“时域法”和“频时域法”识别精度较高、实用性较强 ,可推荐用于现场桥梁移动车载识别。
For the time-varying moving loads on bridges, four indirect moving force identification methods with two solutions to two bridge models have been introduced, and then validated by model experiments in the laboratory. The simulated and illustrative experiment results show that all the four methods are valid for identification of moving vehicle loads on the model bridges although various vehicle-bridge system parameters affect the identification calculation to some extents. Both the time domain method (TDM) and frequency-time domain method (FTDM) have higher accuracy and robust applicability, they can be recommended for identification of moving vehicle loads on bridges in the field.
出处
《振动工程学报》
EI
CSCD
北大核心
2005年第1期99-102,共4页
Journal of Vibration Engineering
基金
国家自然科学基金项目 (5 0 3780 0 9)
长江科学院基金项目
香港理工大学博士后研究基金项目 (G- YX2 5 )
关键词
动车
桥梁
车桥
车载
时变
时域法
模型实验
移动
解决方案
识别
Computer simulation
Dynamic loads
Frequency domain analysis
Identification (control systems)
Time domain analysis
Vehicles
