带内隔板的方钢管混凝土柱-钢梁节点设计研究  

Design of concrete-filled square tube column and steel beam joint with internal diaphragms

作　　者：周天华[1] 聂少锋[1] 卢林枫[1] 何保康[2] 

机构地区：[1]长安大学,陕西西安710061 [2]西安建筑科技大学,陕西西安710055

出　　处：《建筑结构学报》2005年第5期23-29,39,共8页Journal of Building Structures

基　　金：陕西省自然科学基金资助(2004E205)

摘　　要：本文根据试验和理论研究结果,对用于高层建筑的带内隔板的方钢管混凝土柱-钢梁刚性节点的受力和变形特征进行了分析研究。结合《矩形钢管混凝土结构技术规程》(CECS 159∶2004)的设计规定,首先对方钢管混凝土柱-钢梁节点的梁-柱连接,给出了不同抗震设防要求时的受弯、受剪计算公式及建议;其次通过对节点核心区受力机理的分析,建立了钢“框架-剪力墙”加混凝土“斜压短柱”的受力模型及其屈服机制,根据塑性极限分析,给出了节点核心区受剪承载力计算的叠加公式,并与“规程”公式和非线性有限元近似模拟分析结果进行了比较。本文提出的节点核心区受剪承载力计算公式,能够反映出轴压比的影响,其计算结果安全合理,可供实际工程设计参考。According to the results of theoretical and experimental researches, the load-carrying capacity and deformation behavior of concrete-filled square tube column and steel beam rigid joint with internal diaphragms for highrise structure are analyzed. The design suggestions and formulas for calculating bending and shear strength of such joints with different seismic fortification intensities are proposed by means of the design provisions in the ‘Technical Specification for Structures with Concrete-filled Rectangular Steel Tube Members （ CECS 159 ： 2004）＇ Based on the analysis of load-bearing mechanism of joint core zone, the ‘frame-shear wall’ and ‘inclined compression concrete stub column’ mechanical model and yielding pattern of the joint are set up. The superposition formulas for calculating shear load-carrying capacity of joint core zone is also given in terms of plastic ultimate analysis. And then, the comparison between the formulas given in this paper and those of the code （CECS 159：2004） as well as simulation analysis with nonlinear FEM are presented. Comparison shows that the formulas for determination of shear load-carrying capacity of core zone at joint presented in this paper are simple, safe and can express the influence of axial compression ratio of column so that they can be served as reference for engineering design.

关 键 词：方钢管混凝土柱 梁柱节点 节点设计 节点核心区 

分 类 号：TU398.9[建筑科学—结构工程] TU318