钢筋混凝土框架异型节点抗震性能试验研究  

Experimental study on seismic behavior of abnormal joints of reinforced concrete frame

作　　者：白国良[1] 李红星[1] 朱佳宁[1] 

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055

出　　处：《建筑结构学报》2004年第4期8-14,25,共8页Journal of Building Structures

基　　金：国家电力公司"十五"重点项目(60-Y2002-03-T03);陕西省科委基金项目(00JK23);陕西省教育厅专项科研项目(03JK142)。

摘　　要：基于8个钢筋混凝土框架异型节点的试验研究,分析了异型框架节点的受力与常规框架节点的异同。在分析钢筋混凝土框架异型节点受力的基础上,提出了由小梁小柱决定的“小核芯”概念,得出框架异型节点的承载能力取决于异型节点“小核芯”的结论。研究了梁柱截面变化、轴压力和箍筋对异型节点抗剪性能的影响,并以“小核芯”为基本分析单元推导出了钢筋混凝土框架异型节点的抗剪承载能力计算公式。On the basis of the experiment of 8 abnormal joints of reinforced concrete frame, the different and similar working mechanism between abnormal joints and normal joints were discussed. According to the analyses of the experimental results of abnormal joints, the concept of minor core which was decided by small beam and small column was brought forward, and the paper considered that the bearing capacity of abnormal joints were mostly dependent on the minor core of the abnormal joints. This paper also analyzed the effects of different sections of beams and columns, axial forces and stirrups on the shear resistance properties of the joints, and derived the calculating formula of bearing capacity of abnormal reinforced concrete joints by use of concrete minor core as basic analyzing element.

关 键 词：钢筋混凝土 框架异型节点 抗震性能 试验 小核芯 抗剪承载力 

分 类 号：TU375.4[建筑科学—结构工程]