摘要
利用能量变分原理推导了分析变截面连续箱梁剪力滞效应的微分方程 ;运用有限单元法求解微分方程 ,并分析了宁波通途桥在施工过程中的各个阶段与成桥后二期恒载作用下的剪力滞效应 ,得到了一些有助于设计的计算结果。
Based on the variation method, the differential equation is deduced to analyze the shear lag effect in continuous box girders of varying depths. Taking Tongtu Bridge for example, the finite element method is adopted to obtain the shear lag effect in different stages of construction and under secondary dead load, which will be a help to practical design.
出处
《中国市政工程》
2000年第3期19-22,共4页
China Municipal Engineering
关键词
变截面连续箱梁
二期恒载
剪力滞效应
通途桥
continuous box girder of varying section depths
construction stage
secondary dead load
shear lag effect
