【摘要】 为了研究高钛重矿渣混凝土柱在偏心受压状态下的极限承载力、刚度与普通混凝土柱的差异,对3根高钛重矿渣混凝土柱和3根普通混凝土柱进行偏心受压对比试验,并对试验过程进行有限元模拟。研究结果表明:高钛重矿渣混凝土柱与普通混凝土柱Nua/Nu0(Nua为极限承载力模拟值,Nu0为极限承载力试验值)的平均值分别为1.022、0.999,其均方差分别为0.009、0.027,采用文中有限元方法可较准确预测高钛重矿渣混凝土柱和普通混凝土柱的极限承载力;高钛重矿渣混凝土偏心受压柱荷载—侧向挠度曲线的刚度略低于普通混凝土偏心受压柱;可采用《混凝土结构设计规范》(GB 50010-2010)来计算高钛重矿渣钢筋混凝土偏压柱的承载力,其计算结果偏于安全。更多还原

【Abstract】 Six columns,including 3 conventional steel-reinforced concrete( SRC) columns and 3SRC columns with high titanium and dry slag aggregate,were tested under eccentric compression,and the entire experiment process was simulated by the finite element method( FEM) for the purpose of investigating the differences of the ultimate bearing capacity and stiffness between the two kinds of columns. The test and simulation results indicate that the averages of Nua/ Nu0(Nuaand Nu0 are the ultimate bearing capacity calculated by FEM and obtained from the test,respectively) of the conventional SRC columns and the SRC columns with high titanium and dry slag aggregate are respectively 1. 022 and 0. 999; that the corresponding mean square deviations are respectively 0. 009 and 0. 027; that the FEM can accurately predict the ultimate bearing capacity of the both kinds of columns. The stiffness determined by the load-lateral-deflection curve of the RC columns with high titanium and dry slag aggregate is slightly smaller than that determined by the curve of the conventional RC columns. The Code for Design of Concrete Structure( GB 50010- 2010) is applicable for the optimal design of the RC columns with high titanium and dry slag aggregate,and the result is conservative.更多还原