| 竖向地震动对桥梁结构地震反应的影响 |
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| 引用本文： | 王常峰,陈兴冲. 竖向地震动对桥梁结构地震反应的影响[J]. 振动与冲击, 2007, 26(6): 31-35 |
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| 作者姓名： | 王常峰 陈兴冲 |
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| 作者单位： | 兰州交通大学土木工程学院,兰州,730070 |
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| 基金项目： | 兰州交通大学青蓝人才工程基金计划 |
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| 摘 要： | 利用支座接触摩擦单元模拟竖向地震动在桥梁结构地震反应分析中的作用,通过算例讨论了竖向地震动对不同支座摩擦系数和不同刚度(墩径)的桥梁的抗震性能的影响,讨论了竖向地震动的激励方向对分析结果的影响,分析结果表明,竖向地震动对桥梁结构的地震反应尤其是支座剪力及竖向反力有较大的影响,在高烈度区应予以考虑。
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| 关 键 词： | 竖向地震动 活动支座 摩擦 抗震分析 |
| 修稿时间： | 2006-07-272006-09-12 |
Effect of Vertical Excitation on seismic Performance of Continuous Bridge |
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| Wang Changfeng,Chen Xingchong. Effect of Vertical Excitation on seismic Performance of Continuous Bridge[J]. Journal of Vibration and Shock, 2007, 26(6): 31-35 |
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| Authors: | Wang Changfeng Chen Xingchong |
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| Abstract: | The Effect of vertical excitation on continuous bridge was analyzed by use of the contact and friction element,which can consider the influence of vertical force at movable supports on the bearing friction force.By analysis of some 6 span bridges,the effects of vertical excitation on bridges with different parameters such as frictional coefficient and stiffness(pier diameter)were analyzed.The results indicate that the vertical excitation has obvious influence on the seismic performance of continuous bridge,especially on the shear force and vertical force at movable supports,so it should be taken into account in highly seismic region. |
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| Keywords: | vertical excitation movable support friction anti-seismic analysis seismic performance |
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