薄壁钢管混凝土短柱的轴压极限承载力研究(doc 20)

薄壁钢管混凝土短柱的轴压极限承载力研究 曹宝珠　　张耀春 （哈尔滨工业大学　　土木工程学院　　哈尔滨150090） 　摘要：通过对15个圆形薄壁钢管混凝土短柱试验值的对比分析，运用有侧限的薄壁圆柱壳屈曲理论，得出了其轴压极限承载力的计算公式，并证明了理论计算值与试验结果吻合良好。 关键词：薄壁钢管混凝土短柱；圆柱壳；屈曲；极限承载力。 Research on Axial-loaded Ultimate Capacity of Thin-walled Concrete Filled Steel Tubular Short Columns Cao baozhu, Zhang yaochun (Harbin Institute of Technology, College of Civil Engineering, harbin150090) 　Abstract: Comparative analysis has been carried out on 15 specimens of circular thin-walled concrete filled steel tubes. The formulas of calculating CFT’s ultimate capacity in axial loading has been developed, based on the thin-walled cylinder shell local buckling theories under side restained conditions. The calculated values of theories is proved well in accordance with experiment results. Key words: thin-walled concrete filled steel tubes; cylinder shell; buckling; ultimate capacity.
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