Abstract: According?to?the?principle?of?total?potential?energy?with?stationary?value?in?elastic?system?dynamics?and?the?＂setting?in?right?position＂?rule?for?formulating?system?matrixes,?the?coupling?vibration?equation?of?vehicle-bridge?system?is?established,?considering?the?deformation?of?the?continuous?beam?concrete-filled?steel?tube?arch?bridge?deck?generated?by?the?creep?and?temperature,?and?making?the?deformation?overlaps?the?track?irregularities?in?the?form?of?combinational?curves.?The?computer?simulation?is?adopted?to?establish?the?dynamic?FEM?model?of?vehicle-bridge?system?and?the?effect?of?deck?creep?and?temperature?deformation?on?coupling?vibration?of?vehicle-bridge?system?is?researched.?The?results?show?that?track?irregularities?caused?by?the?deck?creep?and?temperature?deformation?influence?the?load?decrement?rate?of?wheel?weight,?the?vertical?acceleration?and?the?vertical?Sperling?index?so?obviously?that?track?irregularities?need?to?be?considered,?when?the?safety?and?driving?comfort?of?vehicle?on?the?bridge?is?evaluated,?especially?for?the?high-speed?trains

Key words: vehicle-bridge coupling vibration , continuous beam concrete-filled steel tube arch bridge , creep , temperature deformation , track irregularities ;

摘要： 根据弹性系统动力学总势能不变值原理及形成矩阵的??对号入座法则,考虑了连续梁钢管混凝土拱桥桥面 因温度和徐变作用而产生的变形影响,将其以组合曲线的形式叠加到轨道不平顺中进行列车走行性分析,建立车 桥系统振动方程。采用计算机模拟的方法,建立列车和桥梁动力分析的有限元模型,研究了桥面徐变变形及温度 变形对车桥系统耦合振动的影响。结果表明:桥面的徐变及温度变形所致的线路不平顺对轮重减载率、车体竖向 加速度和竖向Sperling指标的影响较为显著。因此,在评判桥上列车的运行安全和舒适性时,尤其对于高速铁路, 应考虑混凝土徐变及温变产生的桥面变形引起的轨道不平顺影响。

关键词: 车桥耦合振动, 连续梁钢管混凝土拱桥, 徐变, 温度变形, 轨道不平顺