基于中美欧规范的中空夹层钢管混凝土柱设计对比

COMPARATIVE STUDY ON DESIGN METHODS OF CONCRETE-FILLED DOUBLE-SKIN STEEL TUBE COLUMNS BASED ON CHINESE,AMERICAN AND EUROPEAN SPECIFICATIONS

为便于中空夹层钢管混凝土在国际项目上的推广应用,从材料特,性、设计理论和计算方法等方面对中国规范GB50936、美国标准ANSI/AISC 360和欧洲标准EC4进行了对比。结果表明相同等级的混凝土,美国标准规定的设计强度最高,欧洲标准规定的弹性模量最高;中国规范、美国标准和欧洲标准对中空夹层钢管混凝土柱轴压承载力的计算均偏保守;美国标准对于中空夹层钢管混凝土柱轴压承载力的预测精度最高、欧洲标准预测精度次之。

In order to facilitate the application of concrete-filled double-skin steel tube columns in international projects,Chinese,American and European specifications are compared in terms of material properties,design theories and calculation methods.The results show that the design strength of concrete specified in the American specifications is the highest and the elastic modulus specified in the European specifications is the highest.The calculation of axial bearing capacity predicted by Chinese,American and European specifications is conservative.The accuracy of the American specifications is the highest,followed by that of the European specifications.