| 斜拉桥在大震作用下桥塔的失稳破坏仿真分析 |
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| 引用本文： | 胡庆安,文锋,刘健新. 斜拉桥在大震作用下桥塔的失稳破坏仿真分析[J]. 西安建筑科技大学学报(自然科学版), 2006, 38(3): 349-352 |
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| 作者姓名： | 胡庆安 文锋 刘健新 |
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| 作者单位： | 长安大学公路学院,陕西,西安,710064 |
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| 摘 要： | 针对目前斜拉桥桥塔在动力分析计算时,钢骨架和混凝土等效为一种材料的梁单元这一缺点,提出了将钢筋与混凝土分别考虑,并利用ANSYS程序使己破坏的混凝土不再参与工作,更真实模拟桥塔的受破坏过程,得到了在地震激励作用下,该模型在桥塔塔脚处混凝土单元从开始受力、逐步破坏直至桥塔失稳的全过程.最终得出:桥塔采用钢筋与混凝土两种材料来建模并考虑混凝土破坏的模型计算结果更为真实可靠.
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| 关 键 词： | 斜拉桥 桥塔失稳破坏 仿真分析 |
| 文章编号： | 1006-7930（2006）03-0349-04 |
| 收稿时间： | 2004-11-05 |
| 修稿时间： | 2004-11-052006-03-13 |
Emulation analysis of cable-stayed bridge tower from losing steadiness to destruction under heavy earthquake |
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| HU Qing-an,WEN Feng,LIU Jian-xin. Emulation analysis of cable-stayed bridge tower from losing steadiness to destruction under heavy earthquake[J]. Journal of Xi'an University of Architecture & Technology, 2006, 38(3): 349-352 |
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| Authors: | HU Qing-an WEN Feng LIU Jian-xin |
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| Abstract: | Considering the disadvantage of emulating the steel skeleton and condrete equivalence as a one-material roof-beam unit calculatcon for the cable-stayed bridge tower in the research at present,this paper suggested taking into account separately the steel skeleton and the concrete and excluding the destroyed concrete from work by means of ANSYS so as to genuinely emulate the enduring strength and distorfion of the cable-stayed bridge.Consequently.The whole course in which the concrete unit at the foot of the tower moder under carthquake condition began to destroy to rose steadiness and wenfually deform is observed.Conclusion.The best and most riliable result can be obtained by modelling the bridge tower with steel and concrete and at the same time giving considerafion to the destoying elfect of the concrete. |
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| Keywords: | cable-stayed bridge the bridge tower losing steady and destroying emulation analysis |
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