钢筋混凝土十字形截面柱曲率延性的研究(英文)  

Study of the Curvature Ductility of X-shaped R.C.Column

作　　者：许雪峰[1] 蔡健[1] 

机构地区：[1]华南理工大学土木工程系,广州510640

出　　处：《科学技术与工程》2009年第2期299-305,共7页Science Technology and Engineering

摘　　要：钢筋混凝土十字形截面柱在不同荷载角下的力学性能差别很大,在工程实践中应给予足够的重视。在充分考虑荷载角对十字形截面柱曲率延性影响的基础上,提出两种曲率延性的概念。通过对10800根十字形截面柱的曲率延性进行计算机模拟计算,分析了中和轴角、轴压比、混凝土强度、纵筋强度、体积配箍率、肢高肢厚比以及不等肢长等各种参数对其曲率延性影响,得出各因素对曲率延性的影响规律,建立了中和轴角曲率延性和荷载轴角曲率延性的计算公式,成果可供结构设计和工程实践参考。The mechanics performance of X-shaped reinforced concrete （ R. C. ） column varies when the load angle changes. It should be given enough attention. Based on the full consideration of the influence of load angle on the curvature ductility of X-shaped R. C. columns, the definition of two different kinds of curvature ductility is given in the paper. Calculating the curvature ductility of 10 800 X-shaped columns with computer program, the effects of neutral axis angle, axial compression ratio, concrete compression strength, steel strength, stirrup ratio, height/ thickness ratio and L-shape ratio on curvature ductility of X-shaped R.C. columns are investigated and the influences of the parameters are analyzed. The formulas of two kinds of curvature ductility are given. The conclusions of this paper are helpful in both structure design and real project.

关 键 词：十字形截面柱 中和轴角 荷载角 曲率延性 

分 类 号：TU375[建筑科学—结构工程]