对竖向非规则框架设计的思考  

Study on vertical irregular frame design

作　　者：陈天虹[1] 刘薇[1] 徐琎[1] 

机构地区：[1]浙江科技学院建筑工程学院,杭州310023

出　　处：《浙江科技学院学报》2009年第4期353-355,共3页Journal of Zhejiang University of Science and Technology

摘　　要：结合工程设计实践,分析单榀钢筋混凝土竖向非规则框架的受力机理:传力路线长,受力构件多;刚度变化:水平刚度沿着高度方向有突变,应力集中现象严重;变形特点:各柱的竖向变形差异较大,必须考虑对结构整体内力的计算影响;抗震设防要求:采用强柱弱梁设计,形成延性结构。通过与规则框架的比较,提出竖向非规则框架属于抗震不利的结构形式,实际问题的处理应从结构布置、内力与配筋计算、构造措施等方面加以综合考虑。Base on the practice of engineering design, we analyze/our key points of a vertical irregular reinforced concrete frame; 1） mechanical mechanism, long paths of load transfer and too many stressed components; 2） change of rigidity, the severe phenomenon of the sudden change of horizontal rigidity along height and stress concentration; 3） deformation characteristics, due to big differences in vertical deformation of columns, the influence of the internal force calculation in monolithic construction should be considered; 4） the requirement of anti-seismic measures, using the design method of strong column weak beam to make structure be ductile. Compared with regular frame, the vertical irregular frame is not a high-reliability structure on earth-quake resistance. Structure arrangement, calculation of internal force and reinforcement, conformation measure should be considered in the design of engineering projects.

关 键 词：竖向非规则框架 受力机理 刚度变化 变形特点 抗震设防 设计方法 

分 类 号：TU973.31[建筑科学—结构工程]