摘要
连续组合梁受力时,中间支座处会产生负弯矩区。这时的负弯矩可能成为截面设计的控制值。考虑真实情况下的破坏形态,这种基于线弹性分析的结果偏于保守。因此有必要对设计中的负弯矩进行调幅。文章将对连续组合梁弯矩调幅的原理进行介绍,并与钢筋混凝土结构进行比较。
It is usual for concrete composite continuous beams to be subjected to sagging near the area of center supporter.The value of the sagging is considered to be the controlling factor of the section design.Considering the ultimate state of the beam,the result rooted in linear analysis is much more safe.It is necessary to consider the sagging moment redistribution.This paper will introduce the principles of moment redistribution and,there is a comparison between the steel-concrete structure and the composite be...
出处
《江苏建筑》
2011年第1期45-47,共3页
Jiangsu Construction
关键词
连续组合梁
弯矩调幅
塑性铰
composite continuous beam
moment redistribution
plastic hinge
