- 摘 要
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鐘善桐
(哈爾濱建筑大學 150008)[提要] 鋼管混凝土受彎構件的滯回曲線和不發(fā)生局部失穩(wěn)的鋼構件相同，具有良好的抗震性能。P-△滯回曲線和骨架曲線分為無下降段和有下降段兩種情況。建議限制構件的長細比可以不控制構件的軸壓比。因而鋼管混凝土用作高層建筑的框架柱具有突出的優(yōu)點。
[關鍵詞] 鋼管混凝土構件 動力性能 滯回曲線 骨架曲線 長細比限值It is verified that the M- ф hysteresis loops of CFST bending members are similarly with that for steel members without local buckling. It has good aseismic behaviors. From the M- ф relationships, the P-A
hysteresis loops and skeleton curves can be derived, there are two kinds of P-△skeleton curves, no-descending and with descending stages. Author has suggested to limit the slenderness ratio of member instead of limiting the axial compressive ratio. Hence, CFST has prominent advantages if it is adopted as the columns in tall buildings.
Keywords: dynamic behaviors of CFST; hySteresis 100DS; skeleton curves;limited slenderness ratio
