摘要
将连续梁桥简化为平面梁模型,利用模态分析的方法,计算了在移动车辆振动荷载作用下,连续梁桥的动力特性。讨论了跨径和车辆移动速度变化时,车辆振动系统对连续梁桥挠度冲击系数和弯矩冲击系数的影响,比较真实地揭示出连续梁桥结构在车辆荷载作用下的动态受力与变形本质。
In this paper, the dynamic behavior of the continuous girder bridge under vibration load from moving vehicles is calculated by way of simplifying the continuous girder bridge as plane girder model and by using modal analysis method. The influences of vehicle vibration system on impact coefficients of deflection and bending moment of the continuous girder bridge under condition of varied span length and speed of moving vehicles are studied. The studies herewith rather truly reveal the dynamic behavior and deformation of the continuous girder bridge structure under vehicle load.
出处
《桥梁建设》
EI
CSCD
北大核心
2003年第6期5-7,共3页
Bridge Construction
基金
湖南省教育厅科研基金资助项目(02C092)
关键词
连续梁桥
动力特性
冲击系数
研究
continuous girder bridge
dynamic behavior
impact coefficient
study
