摘要
Q500qE高强钢目前已经在一些大跨度钢桥中被采用,然而我国钢桥设计规范中并未给出关于Q500qE高强钢压杆稳定的设计要求。我国现行TB 10002.2—2005《铁路桥梁钢结构设计规范》中受压杆件设计是按容许应力法,考虑长细比、钢材级别、截面类型、残余应力等因素的影响以稳定系数进行承载力折减。基于这些影响因素,对Q500q E高强钢的稳定进行了系统的数值研究,并与各国规范进行了对比。
Q500qE high strength steel has been used in some large-span steel bridges,however,the design requirements on compression rob stability of Q500 q were not given in design standard.Allowable stress method is employed to calculate compression rob stability in ＂Code for design on steel structure of railway bridge（TB 10002.2-2005） ＂.The effect of slenderness ratio,steel strength grade,section shape,and residual stress etc.were considered by multiplying stability factor,resulting in the reduce of the bearing capacity.In this research,numerical study on compression rob stability of Q500 qE high strength steel was conducted,and the results were compared with the values calculated by other codes.
出处
《铁道建筑》
北大核心
2015年第10期80-84,共5页
Railway Engineering
基金
中国铁路总公司科技研究开发计划项目(2013G001-A-1)
关键词
Q500qE高强钢
压杆稳定
数值分析
折减系数
Q500qE high strength steel
Compression rob stability
Numerical analysis
Reduction factors
