摘要
以某斜柱框架-核心筒为研究对象,基于合理的混凝土塑性损伤本构模型和分层壳单元,采用有限元软件ABAQUS对结构楼板的受力情况进行分析。分析中考虑了恒荷载、活荷载及竖向构件差异变形和外框斜柱等因素对楼板受力的影响,并基于楼板应力的有限元结果和楼板配筋计算公式,得到了楼板配筋量,最终通过有限元模型验算了楼板配筋的合理性。分析结果表明,斜柱框架-核心筒结构的楼板不仅在恒荷载、活荷载下产生较大的内力,竖向构件差异变形和外框斜柱对楼板的受力也有较大影响,设计时要充分考虑。
Based on the reasonable plasticity damage constitutive model and multi-layer shell element,the finite element software ABAQUS was used to analyze the mechanical conditions of floors in a frame-corewall structure with inclined columns. Some effects were considered in the analysis of floors,such as dead and live loads,vertical component differential deformation and the outer frame inclined columns. Based on the finite element analysis results of floor stress and calculating formula of floor reinforcement,the amount of floor reinforcement was obtained. Finally,the rationality of the floor reinforcement was checked through the finite element models. It shows that the floor structure of frame-corewall structure with inclined columns produces great internal force under constant load and live loads,and vertical component differential deformation and outer frame inclined columns also have great influence on the floor force. Above conditions should be fully considered in design.
出处
《建筑结构》
CSCD
北大核心
2018年第1期9-13,25,共6页
Building Structure
基金
国家重点研发计划项目(2016YFC0701509,2017YFC0703609)
关键词
框架-核心筒结构
楼板
塑性损伤本构
分层壳单元
frame-corewall structure
floor slab
plasticity damage constitutive model
multi-layer shell element
