偏心受压下的L型截面钢骨混凝土异型柱试验

Experimental Study on Compressive L-Shape Steel Reinforced Concrete Short Columns with Eccentricity

目的研究L型截面钢骨混凝土异型柱的破坏特征、破坏机理以及受力性能.方法通过制作3根不同含钢率的L型截面钢骨混凝土异型柱和1根无钢骨的L型截面钢筋混凝土异型柱,对异型柱在单向偏心受压下进行试验研究,利用试件的试验数据,绘制了各种荷载-应变、荷载-位移关系曲线并进行分析.结果通过对L型截面钢骨混凝土异型柱和钢筋混凝土异型柱的单向偏压试验研究,明确了L型截面钢骨混凝土异型柱的破坏特征,受力性能、破坏机理及含钢率对异型柱承载力的影响.结论L型截面钢骨混凝土异型柱跟普通的L型截面钢筋混凝土异型柱相比,具有更高的承载力,更大的延性性能,随着含钢率的增加,构件的承载力及延性也相应增大.

To study the failure characteristics, failure mechanism and forced performance of the L-shape steel reinforced concrete columns, the three L-shape steel reinforced concrete columns which have three type steel ratio and one ordinary reinforced concrete column had been tested with uniaxial eccentric load, and the loadstrain and load-displacement relationship curves had been drawn and analysed. By the study of the columns, the failure characteristics, failure mechanism, stress performance of the columns and the influence of steel ratio to the columns had been definituded. So we can say, the capacity of the L-shape steel reinforced concrete columns is higher than the capacity of reinforced concrete columns, and the ductility of that is better. With the increase of the percentage of the steel ratio, the capacity and ductility of that is better. With the increase of the percentage of the steel ratio, the capacity and ductility of the L-shape steel reinforced concrete columns are accretion.