摘要
在基于直杆共轴碰撞理论建立的桥梁地震反应邻梁碰撞分析模型基础上,结合动量守恒定律和能量守恒定律,给出了与之等效的刚体碰撞模型,所定义的等效恢复系数r由邻梁长度比12/ll和碰撞弹簧刚度比a唯一决定。一座实际桥梁地震反应邻梁碰撞效应分析表明,等效刚体碰撞模型可以得到与弹性杆碰撞模型几乎一致的结果。
Conservation laws of momentum and energy are introduced to model pounding between adjacent bridge girders based on collinear compact rod theory. An equivalent rigid-body compact model is proposed. The coefficient of restitution depends only on the length ratio l2/l1 and the impact spring stiffness ratio α. A simplified analysis of the seismic pounding in a concrete bridge indicates that the equivalent rigid-body compact model can acquire almost the same structural response as that elastic rod compact model does.
出处
《工程力学》
EI
CSCD
北大核心
2004年第4期81-85,44,共6页
Engineering Mechanics
基金
地震科学联合青年基金资助(100015)
