| 爆炸冲击波荷载作用下悬索桥的竖弯振动 |
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| 引用本文： | 王赟,蒋志刚,严波.爆炸冲击波荷载作用下悬索桥的竖弯振动[J].公路,2011(3). |
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| 作者姓名： | 王赟 蒋志刚 严波 |
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| 作者单位： | 国防科学技术大学指挥军官基础教育学院渡河指挥系,长沙市,410072 |
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| 摘 要： | 针对大跨度悬索桥可能遭受的爆炸冲击波威胁,研究了空中爆炸冲击波荷载作用下悬索桥的竖向弯曲振动.基于悬索桥挠度理论.采用模态叠加法得到了悬索桥空中爆炸冲击波作用下动挠度的解析解.算例表明,最大动挠度解析解与数值模拟结果吻合较好,误差小于10%.
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| 关 键 词： | 悬索桥 空中爆炸 挠度理论 竖向振动 |
Vertical Bending Vibration of Suspension Bridge Under Air Explosion Loading |
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| WANG Yun,JIANG Zhi-gang,YAN Bo.Vertical Bending Vibration of Suspension Bridge Under Air Explosion Loading[J].Highway,2011(3). |
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| Authors: | WANG Yun JIANG Zhi-gang YAN Bo |
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| Institution: | WANG Yun,JIANG Zhi-gang,YAN Bo (Department of River-Crossing,College of Basic Education for Commanding Officers,National University of Defence Technology,Changsha 410072,China) |
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| Abstract: | Aiming at the threat of explosion attack to suspension bridges,the vertical bending vibration of suspension bridges under air explosion loading is studied.Based on the deflection theory and the mode superposition method,analytical solutions for the dynamic deflection of suspension bridges under air explosion loading are derived.A numerical example shows that the maximum dynamic deflection from the analytical solution is in good agreement with that from numerical simulation with the error less than 10%. |
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| Keywords: | suspension bridge explosion in air deflection theory vertical vibration |
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