| 活载作用下双层部分斜拉箱梁桥有限元分析 |
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| 引用本文： | 郑为明,陈燊.活载作用下双层部分斜拉箱梁桥有限元分析[J].福州大学学报(自然科学版),2005,33(5):649-653. |
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| 作者姓名： | 郑为明 陈燊 |
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| 作者单位： | 福州大学土木建筑工程学院,福建,福州,350002 |
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| 基金项目： | 福建省交通科技发展基金 |
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| 摘 要： | 提出双层荷载部分斜拉空腹连续箱梁新桥型,并完成拟实用设计.利用大型通用软件ANSYS建立结构空间有限元分析模型,分析活载作用下各控制截面的应力分布规律.分析结果表明:采用新规范车道荷载的计算模式进行空间桥梁结构整体布载计算时,车道荷载中的集中荷载将引起局部的应力集中,设计时应给予充分评估.
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| 关 键 词： | 箱梁桥 斜拉桥 活载 有限元分析 |
| 文章编号： | 1000-2243(2005)05-0649-05 |
| 修稿时间： | 2004年12月29 |
FEM analysis of double decked and partially cable - stayed box - girder bridge under the live loads |
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| ZHENG Wei-ming,CHEN Shen.FEM analysis of double decked and partially cable - stayed box - girder bridge under the live loads[J].Journal of Fuzhou University(Natural Science Edition),2005,33(5):649-653. |
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| Authors: | ZHENG Wei-ming CHEN Shen |
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| Institution: | Shen (College of Civil Engineering and Architecture,Fuzhou University,Fuzhou,Fujian 350002,China) |
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| Abstract: | A practical design of the double decked,partially cable-stayed and open-wed continuous box-girder bridge has been done.Based on the universal finite element analysis software ANSYS,a spatial model of the bridge is built and the stress distribution under the live load on main sections is analyzed.It shows that,when the lane loading in the new code acts on the bridge structure,the concentrated load in lane loading will cause the local stress concentration,and therefore designers should pay much attention to it. |
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| Keywords: | box-girder bridge cable-stayed bridge live load FEM analysis |
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