铁道标准设计Issue(12)：71-75,5.DOI:10.13238/j.issn.1004-2954.2014.12.018
客运专线连续箱梁竖向温差取值探讨
Approach to Vertical Temperature Difference Value for Continuous Box Girders on Passenger Dedicated Lines
寇延春1
作者信息
- 1. 中铁第四勘察设计院集团有限公司，武汉 430063
- 折叠
摘要
Abstract
To understand the impact of the vertical temperature difference load of box girders on passenger dedicated lines on the structure, four distinct bridge specifications from United States, United Kingdom, Japan and China are compared and analyzed in terms of nonlinear sunshine temperature curve, and the temperature stress of the structure section at different nonlinear sunshine temperatures is calculated respectively for different specifications with reference to 3-span variable cross-section continuous box beam. The results show that temperature difference load as stipulated in Chinese specification brings about more effect on the structure. In view of the actual conditions of the bridges on dedicated passenger lines, and reduction effects of track structure on bridge deck temperature, the selection of vertical temperature differences of box girder bridges on passenger dedicated lines is recommended.关键词
客运专线/连续箱梁/温差荷载/铁路规范/结构分析Key words
Passenger dedicated railway line/Continuous box girder/Temperature difference load/Railway specification/Structure analysis分类
交通工程引用本文复制引用
寇延春..客运专线连续箱梁竖向温差取值探讨[J].铁道标准设计,2014,(12):71-75,5.
