【作者】 郭兰慧； 张素梅； 马欣伯；

【Author】 GUO Lan-hui~(1,2) ZHANG Su-mei~2 MA Xin-bo~2 1.Postdoctoral Research Station in Civil Engineering of HIT,Postdoctoral Research Station of the Architectural Design and Research Institute of HIT,Harbin.150090,China, 2.School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China

【机构】 哈尔滨工业大学土木工程博士后流动站； 哈尔滨工业大学土木工程学院；

【摘要】 本文介绍了国内外典型设计规程关于矩形钢管混凝土的设计方法,包括欧洲 EC4规程、美国 LRFD 规程、日本 AIJ 规程、中国 CECS 规程及福建省地方规程.规程计算结果和国内外搜集到的大量试验结果进行对比,对比结果表明:欧洲 EC4规程的计算结果和福建规程的计算结果与试验结果最为接近,其他三部规程的计算结果相对保守.在此基础上本文进一步修正了矩形钢管混凝土轴压构件的承载力计算公式.在公式中考虑了大宽厚比下钢管局部屈曲对承载力的影响,使得大宽厚比下构件承载力的计算公式和普通宽厚比下承载力的计算公式得以统一,简化计算结果和大量试验结果进行对比,验证了简化计算结果的正确性.更多还原

【Abstract】 The calculation methods of concrete -filled rectangular hollow section (RHS) steel tubes subjected axial load in different codes are introduced,which includes American Load and Resistance Factor Design spec- ification for structural building ( LRFD),European Committee for Standardization Eurocode 4,Architectural Institute of Japan (AIJ) ,Chinese design code CECS 159:2004 and Fujian design code(DBJ13-51-2003). The calculated results from the above five design codes are compared with experimental results.The results showed that EC4 and Fujian design code closely predict the ultimate capacity of the specimens,and the other three codes are slightly more conservative.At the same time,a simplified method is given to calculate the bearing capacity.The local buckling of specimen with large width -to -thickness ratio is considered.The ac- curacy of the proposed simplified method is assessed by comparing the experimental results from different refer- enees.更多还原