摘要
根据列车桥梁时变系统的能量随机分析理论 ,分别建立列车、上承式钢板梁空间振动分析模型 ,可方便考虑钢板梁主梁横向与竖向弯曲、自由扭转、约束扭转变形及横隔板、横联、平联、刚性连接加固杆件等桥梁局部构件的作用。采用计算机模拟方法 ,计算了提速列车与常用跨度上承式钢板梁采用各种加固措施前后的空间振动响应———桥梁及机车车辆的振动位移、加速度、列车轮对横向摇摆力、平稳性指标、轮压减载率等时程。根据计算结果 ,提出了对常用的 32m上承式铆接钢板梁、 2 4m上承式铆接钢板梁、 2 0m (B =1 8m)
According to the theory of Energy Random A na lysis in track-bridge time-varying system, the author presents respectively th e finite element analytical models for spatial vibration of the train and the de ck steel plate girder bridge system. The flexural in vertical and lateral direct ions, free torsional, restraint torsional deformation of the main deck steel pla te girder and the poles of the local members of the bridge such as cross diaphra gm plate can be easily considered. With the computer simulation method, we can e asily calculate the spatial vibration responses, such as the vibration displacem ent and acceleration of the bridge and the rolling stock of both the speed-incr ease train and the deck steel plate girder bridge with or without various reinfo rcing measures. On the basis of the calculating results, suggestions on reinforc ing design of the 32 m, 24 m and 20 m (B=1 8 m) deck steel plate girders are ma de and reference provided for relevant departments.
出处
《中国铁道科学》
EI
CAS
CSCD
北大核心
2002年第5期82-88,共7页
China Railway Science
基金
铁道部科技开发计划项目(96G18 A)
