薄壁鋼管混凝土短柱的軸壓極限承載力研究(doc 20)

薄壁鋼管混凝土短柱的軸壓極限承載力研究 曹寶珠　　張耀春 （哈爾濱工業大學　　土木工程學院　　哈爾濱150090） 　摘要：通過對15個圓形薄壁鋼管混凝土短柱試驗值的對比分析，運用有側限的薄壁圓柱殼屈曲理論，得出了其軸壓極限承載力的計算公式，並證明了理論計算值與試驗結果吻合良好。 關鍵詞：薄壁鋼管混凝土短柱；圓柱殼；屈曲；極限承載力。 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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