| 赫章特大桥动力特性及风致抖振响应分析 |
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| 引用本文： | 黄己伟,刘丹.赫章特大桥动力特性及风致抖振响应分析[J].交通科技与经济,2014(3):115-118. |
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| 作者姓名： | 黄己伟 刘丹 |
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| 作者单位： | [1]四川建筑职业技术学院工程管理系,四川德阳618000 [2]四川建筑职业技术学院土木工程系,四川德阳618000 |
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| 摘 要： | 赫章特大桥是一座超高墩的混凝土连续刚构桥,最高墩达到197m,为研究该桥的抗风能力,采用ANSYS10.0建立最大悬臂施工阶段和成桥阶段的有限元模型,并研究动力特性,采用修正傅里叶谱法生成脉动风速时程,基于准定常理论,计算作用在模型上的抖振力时程,由时程分析法分别计算最大悬臂阶段和成桥阶段抖振时域响应。
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| 关 键 词： | 赫章特大桥 动力特性 随机风场模拟 抖振响应 |
Analysis of Dynamic Characteristics and Wind-Induced Buffeting Response of Hezhang Bridge |
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| HUANG Ji-wei,LIU Dan.Analysis of Dynamic Characteristics and Wind-Induced Buffeting Response of Hezhang Bridge[J].Technology & Economy in Areas of Communications,2014(3):115-118. |
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| Authors: | HUANG Ji-wei LIU Dan |
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| Institution: | 1. Department of Management Engineering, Sichuan College of Architectural Technology, Deyang 618000, Sichuan, China; 2. Department of Civil Engineering, Sichuan College of Architectural Technology, Deyang 618000, Sichuan, China) |
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| Abstract: | Hezhang Bridge is a rigid frame concrete bridge with high pier. Its highest pier is as high as 197 m. In order to study the wind-resistant capacity,the finite element models of the bridge both in the longest in cantilever construction stage and in the post construction stage are established respectively by using ANSYS10. 0. The dynamic characteristics of the bridge model are performed by subspace iteration method. The turbulent stochastic wind-velocity field of the bridge is simulated and checked by adopting the modified fourier spectrum method. Based the quasi-steady theory, the time history of buffeting force is computed. Finally, the results of the time-domain buffeting both in the longest in cantilever construction stage and in the post construction stage are computed respectively by carrying out time history analysis, |
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| Keywords: | Hezhang bridge dynamic characteristics simulation of stochastic wind field buffeting response |
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