钢管混凝土柱-钢梁节点核心区受剪承载力计算对比研究

对近年来国内外进行的部分钢管混凝土柱与钢梁连接节点试验数据进行了统计，将试验结果与AIJ规范公式、Fukumoto方法和Nishiyama方法的计算结果进行了对比分析。计算结果表明：Fukumoto方法和Nishiyama方法的核心区受剪承载力计算方法较AIJ规范更加准确可靠。通过参数分析，证实了3种受剪承载力计算方法对不同轴压比、不同节点形式、不同柱截面的钢管混凝土节点具有较广泛的适用性。建议AIJ规范的适用钢材强度和混凝土强度分别不超过450MPa和70MPa，3种方法的适用钢材屈服强度与混凝土抗压强度标准值之比不小于8。对特殊类型节点的核心区受剪设计，也给出了修正计算式。

Comparison and analysis on design method of shear capacity of panel zone between CFT column and steel beam

This paper investigates the experiments on composite joints between concrete filled tube columns and steel girders conducted in recent years and compares the test results with the calculation results of AIJ specification,Fukumoto calculation method and Nishiyama calculation method.By data analysis,the study confirms the applicability of the three methods.The ultimate shear capacity calculation results of Fukumoto and Nishiyama methods are more accurate and reliable than AIJ specification.By parametric analysis,the study confirms that the three methods have a broad applicability for joints of various axial compression ratios,connection formation and column cross section.This paper also suggests that the applicable steel strength and concrete strength of AIJ specification should not exceed 450 MPa and 70 MPa respectively,the applicable steel yielding strength to concrete standard compressive strength should exceed 8.This paper also gives proposed amendments of formulas to suit for special formation of joints.