| 高墩大跨连续刚构桥非线性稳定计算分析 |
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| 引用本文： | 黄己伟,刘丹.高墩大跨连续刚构桥非线性稳定计算分析[J].西部交通科技,2011(11):43-47,54. |
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| 作者姓名： | 黄己伟 刘丹 |
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| 作者单位： | 1. 重庆交通大学土木建筑学院,重庆,400074
2. 重庆交通大学河海学院,重庆,400074 |
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| 基金项目： | 贵州省交通运输厅科技项目“赫章特大桥超高墩连续刚构桥设计施工关键技术”,编号为2010-122-017 |
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| 摘 要： | 文章以赫章特大桥为工程背景,以压溃准则为失稳判定准则,利用有限元ANSYS结构分析软件,对采用均布力和集中力两种不同加载方式时的高墩大跨连续刚构桥进行非线性稳定计算。计算结果表明：（1）采用集中力加载方式的计算结果更符合实际情况;（2）失稳模态与风荷载的作用方向有关;（3）结构塑性区域与施加的荷载方式和所施加的风荷载有关。
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| 关 键 词： | 加载方式 风荷载 非线性稳定 失稳模态 塑性区域 |
Nonlinear Stability Calculation Analysis of High Pile Long-Span Continuous Steel Bridge |
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| HUANG Ji-wei,LIU Dan.Nonlinear Stability Calculation Analysis of High Pile Long-Span Continuous Steel Bridge[J].Western China Communication Science & Technology,2011(11):43-47,54. |
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| Authors: | HUANG Ji-wei LIU Dan |
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| Institution: | HUANG Ji-wei1,LIU Dan2(1.College of Civil Engineering Construction,Chongqing Jiaotong University,Chongqing,400074,2.College of River and Ocean Engineering,400074) |
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| Abstract: | Taking the Hezhangte Bridge as the construction example,the article uses crush-ing criteria for instability mode and finite element ANSYS structure analysis software to per-form nonlinear stability calculation on uniform distribution and concentrated force.The calcu-lation shows:1.The result developed from concentration loading method is more realistic;2.Instability mode is effected by the direction of wind load;3.Structural plasticity area can be affected by the loading method and its wind load. |
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| Keywords: | Loading method Wind load Nonlinear stability Instability mode |
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