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。
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.
出处
《西部交通科技》
2011年第11期43-47,54,共6页
Western China Communications Science & Technology
基金
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
