| 桥梁结构地震反应邻梁碰撞分析等效刚体模型 |
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| 引用本文： | 王东升,王国新,冯启民.桥梁结构地震反应邻梁碰撞分析等效刚体模型[J].工程力学,2004,21(4):81-85,44. |
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| 作者姓名： | 王东升 王国新 冯启民 |
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| 作者单位： | 海岸与近海工程国家重点试验室,大连理工大学,大连,116024;中国海洋大学,青岛,266071 |
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| 基金项目： | 地震科学联合青年基金资助(100015) |
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| 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。
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| 关 键 词： | 桥梁 地震反应 碰撞 分析模型 恢复系数 |
| 文章编号： | 1000-4750(2004)04-0081-06 |
EQUIVALENT RIGID-BODY COMPACT MODEL OF POUNDING BETWEEN ADJACENT BRIDGE GIRDERS DURING EARTHQUAKES |
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| WANG Dong-sheng,WANG Guo-xin,FENG Qi-min.EQUIVALENT RIGID-BODY COMPACT MODEL OF POUNDING BETWEEN ADJACENT BRIDGE GIRDERS DURING EARTHQUAKES[J].Engineering Mechanics,2004,21(4):81-85,44. |
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| Authors: | WANG Dong-sheng WANG Guo-xin FENG Qi-min |
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| Affiliation: | WANG Dong-sheng1,WANG Guo-xin1,FENG Qi-min2 |
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| Abstract: | Conservation laws of momentum and energy are introduced to model pounding between adjacent bridge girders based on collinear compact between rod theory. An equivalent rigid-body compact model is proposed. The coefficient of restitution depends only on the length ratio 12/ll and impact spring stiffness ratio a. A simplified analysis of 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. |
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| Keywords: | bridge seismic response pounding analysis model coefficient of restitution |
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