带约束拉杆方形钢管混凝土偏压短柱的试验研究

为了解带约束拉杆方形钢管混凝土短柱在单向偏心荷载作用下的力学性能，进行了14个试件的偏压试验，主要研究截面含钢率、荷载偏心率以及约束拉杆设置对带约束拉杆方形钢管混凝土短柱偏压力学性能的影响．结果表明，方形钢管混凝土短柱试件的承载力随着偏心率的增大而减小，随着钢管壁厚度（含钢率）的增大而增大，设置约束拉杆有助于该试件极限承载力和延性的提高．文中还利用国内现有规程中的方法对该类试件的承载力进行了计算，发现规程计算结果总体上低估了带约束拉杆方形钢管混凝土偏压试件的级限承载力，

Experimental Investigation into Square CFT Stub Columns with Binding Bars Under Eccentric Loads

In order to investigate the mechanics properties of square CFT(Concrete-Filled Tubular) stub columns with binding bars under unilateral eccentric loads,14 specimens were tested by considering the parameters such as the steel ratio,the load eccentricity ratio and the location of the binding bars.Experimental results indicate that(1) the bearing strengths of the specimens decrease with the increase in the load eccentricity ratio while they increase with the increase in the steel ratio,and(2) binding bars help to improve the ultimate strength and the ductility of the eccentric-loaded specimens.The tested results were finally compared with the results calculated by the methods presented in the current specifications at home,showing that the current specifications,in general,have undervalued the ultimate strength of the specimens with binding bars.