铁道标准设计2018，Vol.62Issue(7)：74-81,8.DOI:10.13238/j.issn.1004-2954.201711210003
兰新高速铁路128m简支系杆拱设计
Design of 128 m Simply Supported Tied-Arch Bridge on Lanzhou-Urumqi High Speed Railway
杨正华1
作者信息
- 1. 中铁第一勘察设计院集团有限公司,西安 710043
- 折叠
摘要
Abstract
128 m simply supported beam-arch combined structure is used for the main bridge of Urumqi river extra-long bridge on Lanzhou-Urumqi high speed railway.By analyzing the difficulties and control factors in the design,this paper introduces the structural design,including structural dimension,design procedures and relevant stiffness controlling measures.In addition,with the aid of finite element analysis software,dynamic and stability analysis is conducted.The results show that the post-construction deformation of the long span simply supported beam-arch combined structure meets the requirements for laying the ballastless track through reasonable allocation of stiffness between beam and arch and other special treatment measures.The conclusions of this paper provide useful references for the design of similar tied-arch bridge with parallel hangers.关键词
铁路桥/简支梁/梁拱组合结构/系杆拱桥/结构设计Key words
Railway bridge/Simply supported beam/Beam-arch combined structure/Tied-arch bridge/Structural design分类
交通工程引用本文复制引用
杨正华..兰新高速铁路128m简支系杆拱设计[J].铁道标准设计,2018,62(7):74-81,8.
