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     王  菁  蔣曉東  李四平  霍  達(dá)
    （鄭州工業(yè)大學(xué) 450002）

[提要] 首先根據(jù)邊緣纖維屈服準(zhǔn)則，導(dǎo)出了兩種材料組合的方形截面偏壓柱承載力計(jì)算的正割公式，驗(yàn)證了這一結(jié)果可以直接應(yīng)用于方鋼管混凝土軸壓柱承載力的計(jì)算。然后在改進(jìn)的基礎(chǔ)上給出方鋼管混凝土偏壓柱承載力計(jì)算的簡(jiǎn)單解析公式，可供工程設(shè)計(jì)參考。
[關(guān)鍵詞] 方鋼管混凝土柱 偏壓 正割公式

The Secant formula for square cross-section columns composed of two different materials is presented. The validity of the formula for concrete-filled square steel tubular columns under axial compression is proved by experiments. Furthermore, the analytical expression for computation of the ultimate loading of concrete-filled square steel tubular columns under eccentric compression is obtained by modifying the distribution of the cross-section stress.
Keywords: concrete-filled square steel tubular column; eccentric compression; secant formula