铁道标准设计2018，Vol.62Issue(4)：112-117,6.DOI:10.13238/j.issn.1004-2954.201706020001
尼铁现代化项目中矩形空心桥台的优化设计
Optimal Design of Rectangular Hollow Abutment in Nigerian Railway Modernization Project
张曦霖1
作者信息
- 1. 中土集团福州勘察设计研究院有限公司,福州 350013
- 折叠
摘要
Abstract
The sectional dimension of railway rectangular hollow abutment commonly used in current reference diagram(for 200 km/h) is comparatively thicker,resulting in excessive safety margin. In order to save concrete masonry, it is hoped that the abutment section could be reduced meanwhile safety is ensured. First, this paper presents a live load diagram for the calculation of the cross section of the railway rectangular hollow abutment. And then this new method is employed to conduct the finite element analysis of the conventional rectangular hollow abutment used in the Lagos-Ibadan railway project. The optimal section size is finally determined after continuous trail and the amount of concrete used in the optimized abutment is 10% less than that of the former one while the steel consumption remains much the same. This optimization brings about significant benefit for this local project where the cement is expensive.关键词
矩形空心桥台/荷载图示/有限元/截面/优化Key words
Rectangular hollow abutment/Live load diagram/Finite element analysis/Section/Optimi-zation分类
交通工程引用本文复制引用
张曦霖..尼铁现代化项目中矩形空心桥台的优化设计[J].铁道标准设计,2018,62(4):112-117,6.
