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对11个钢管混凝土圆柱试件进行试验和有限元分析,研究偏心荷载作用下钢管混凝土圆柱的性能。钢材强度fy>450MPa;混凝土强度fck=31.5,59MPa;径厚比D/t=25,40,60,80,100;偏心e=0,0.167D,0.5D。将试验和有限元分析结果与AISC(2005)《美国钢结构协会标准》,Eurocode4(1994)《欧洲规范4》及KBCS(2009)《韩国建筑规范》进行对比,验证各规范的适用范围。结果表明:AISC和KBCS与分析结果较吻合,Eurocode4高估了荷载-弯矩关系。
Eleven concrete-filled steel tubular specimens were tested and analyzed by finite element method to study the performance of concrete filled steel tubular columns under eccentric load. Steel strength fy> 450MPa; concrete strength fck = 31.5,59MPa; diameter ratio D / t = 25,40,60,80,100; eccentricity e = 0,0.167D, 0.5D. The experimental and finite element analysis results were compared with the AISC (2005) American National Association of Steel Construction Standards, Eurocode4 (1994) Eurocode 4 and KBCS (2009) Korean Building Code to verify the applicability of each specification. The results show that AISC and KBCS are in good agreement with the analysis results and Eurocode4 overestimates the load-moment relationship.