两种不同配钢形式钢骨混凝土L形柱的受力性能对比分析

通过4根钢骨混凝土(SRC)L形异形截面柱进行低周反复加载试验(其中2根配桁架式钢骨,2根只在截面角部配置型钢而肢端配等截面螺纹钢),得到该类新型构件的受力性能和破坏机理,并且分析比较两种不同配钢形式的钢骨混凝土L形柱试件的破坏形态、滞回特性、承载力、刚度退化、位移延性和耗能能力.试验研究结果表明:配桁架式钢骨较只在截面角部配置型钢而肢端配等截面螺纹钢的L形异形柱的受力性能好.

Comparison analysis on mechanic behaviors of two types steel reinforced concrete L-shaped column

In order to reveal the mechanical behavior of steel reinforced concrete (SRC) L-shaped column, 4 specimens of SRC L-shaped column were designed. Which include two kinds of steel layout way. One is T-shaped steel layout in the corner and both ends of L-shaped column,the T-shaped steel formed steel truss by welded berry angle-iron. The other way is T-shaped steel layout only in the corner,but the both ends of L-shaped column layout reinforcement (which section area is equal to the T-shaped steel). According to the experimental research on 4 specimens under low cyclic reversed loading,the failure process, failure patterns and mechanical behaviors were obtained. And the two kinds of steel layout way specimens' mechanical behaviors were compared, such as the loading-displacement hysteretic curves, loading bearing capacity, displacement ductility, rigidity degradation and energy dissipation. The experimental study indicates that the first steel layout fashion specimen's mechanical behavior is superior to the second steel layout fashion.