| 飘浮体系斜拉桥纵向抗震计算的单塔模型 |
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| 引用本文： | 颜海泉,王君杰.飘浮体系斜拉桥纵向抗震计算的单塔模型[J].地震工程与工程振动,2007,27(4):80-86. |
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| 作者姓名： | 颜海泉 王君杰 |
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| 作者单位： | 同济大学,桥梁工程系,上海,200092 |
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| 基金项目： | 国家自然科学基金项目(50478112) |
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| 摘 要： | 通过全桥模型计算结果与单塔模型计算结果的对比,讨论了集中质量在塔上锚固区处堆聚位置,定义了一个结构动力特性和结构地震反应的修正系数,提出了飘浮体系斜拉桥塔纵桥向地震反应计算的单塔模型。多个工程实例的分析结果表明,采用单塔模型的典型误差在15%左右,精度可以满足工程抗震设计的要求,使桥塔的抗震计算得到简化。
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| 关 键 词： | 飘浮体系斜拉桥 地震反应 单塔模型 |
| 文章编号： | 1000-1301（2007）04-0080-07 |
| 修稿时间： | 2007-01-14 |
A tower model for seismic response prediction of floating cable-stayed bridge in longitudinal direction |
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| YAN Haiquan,WANG Junjie.A tower model for seismic response prediction of floating cable-stayed bridge in longitudinal direction[J].Earthquake Engineering and Engineering Vibration,2007,27(4):80-86. |
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| Authors: | YAN Haiquan WANG Junjie |
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| Institution: | Department of Bridge Engineering, Tongji University, Shanghai 200092 ,China |
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| Abstract: | A tower model was suggested for seismic response prediction of floating cable-stayed bridge in longitudinal direction. A mass equivalence of the girder and the cables was presented by a modified factor.The results of example cable-stayed bridges show that the typical errors of the tower model are about 15%.The suggested model may be used to simplify the seismic design of cable-stayed bridges. |
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| Keywords: | floating cable-stayed bridge seismic response tower model |
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