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

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 ;