Coupled Vibration Analyses of Curved Twin I-Girder Bridges and Running Vehicles
Rationalized girder bridges have been put into practical use due to the cost reduction de -mands of infrastructures in Japan in recent years. On the other hand, the low torsional stiffness of such bridges and related dynamic problems are concerned , especially for curved ones. The purpose of this study is to provide an analytical approach to simulate the coupled vibration of rationalized curved bridges and running vehicles , which can be used to investigate the issues mentioned above. In this paper, a curved twin-girder bridge with general axial section is adopted for the analysis. A general large dump truck with one axis at front and two axes at rear is modeled as a sprung -mass dynamic system with 12-degree-of-freedom for the vehicle -bridge interaction analysis. The bridge is modeled with three-dimensional beam elements. The coupled vibration of the interaction system is formulized and a computer program is developed. To investigate the basic characteristics of the curved bridges, eigenvalue analyses of the bridge with different types of crossbeams are carried out. Then,the coupled vibration of the running vehicle-bridge interaction system is simulated and evaluated.
Xingwen HE Toshiro HAYASHIKAWA Mitsuo KAWATANI Takashi MATSUMOTO
Faculty of Engineering,Hokkaido University,Sapporo 060-8628,Japan Graduate School of Engineering ,Kobe University, Kobe 657-8501, Japan
国际会议
5th International Symposium on Environmental Vibration(第五届环境振动国际研讨会)
成都
英文
380-385
2011-10-20（万方平台首次上网日期，不代表论文的发表时间）