北京交通大学学报2011，Vol.35Issue(4)：62-65,4.
下承式脊骨梁横向剪力滞效应
Transverse shear lag effect of the through spine beam
摘要
Abstract
The through spine beam is a new bridge type for urban rail transit, which has the structural properties of the small box girder and large cantilever. As the part of spine beam, cantilever plates is prone to longitudinal warping of beam,and the transversal shear lag effect is very obvious. FEA software ANSYS was introduced to construct the calculating model of through spine beam for urban rail transit. The bending normal stress in bottom plate under concentrated load and uniform distributing load were calculated and compared to the result of the Timoshenko beam theory. The distribution pattern of transverse shear lag coefficient is concluded.关键词
脊骨梁/剪力滞效应/有限元/轨道交通Key words
spine beam/shear lag effect/finite element,rail transit分类
交通工程引用本文复制引用
徐艳秋,刘静文..下承式脊骨梁横向剪力滞效应[J].北京交通大学学报,2011,35(4):62-65,4.基金项目
中央高校基本科研业务费专项资金资助项目(2011JBM087) （2011JBM087）
