摘要
本文对钢—混凝土组合梁在长期荷载作用下的内力和变形的计算方法进行了分析。文中采用按龄期调整的有效模量法并结合有限单元步进法来计算钢—混凝土组合截面的应力和变形，从而将混凝土的收缩徐变等非弹性时效问题转化为相应的弹性计算问题。文末以一组合框架为例，对其在持续荷载作用下的结构内力重分布及截面应力重分布等长期行为进行了分析讨论。
The analytical method for the internal force and defomation of steel-concrete composite beams has been discussed.With the age-adjusted effective modulus and step by step method of the finite element,the stress and deformation of composite beams could be calculated,shus the time-dependent problem of concrete such as creep and shrinkage has been changed into elastic ones.At the end of this paper,a composite frame has been induced and its redistribution of stress under the ling term loads has been discussed.
出处
《河北省科学院学报》
CAS
1998年第1期14-19,27,共7页
Journal of The Hebei Academy of Sciences
关键词
钢-混凝土
组合梁
徐变
变形
内力
应力
Steel-concrete
Composite beam
Shrinkage
Creep
Time-dependent
