有侧向约束的界面阻力件抗剪试验研究

Experimental Research on Shear Resistant of Shear Bar Placed in Concrete Interface with Lateral Restraint

模拟钢管混凝土柱节点区钢管壁—梁端混凝土剪力传递的界面 ,进行了 13个含抗剪阻力件的试件的抗剪试验 ,试验参数为混凝土强度、剪跨比、阻力件的位置、排数和排距 ,试验还考虑了纵筋销栓作用 .试验结果表明 ,在侧限条件下 ,界面传递剪力能力大为提高 .本试验为新型钢管混凝土柱节点的抗剪能力提供了可靠的试验依据 。

The results of a shear resistant test of 13 specimens are presented in this paper. The specimens were designed to simulate the steel-concrete shear transfer interface of the concrete filled steel tubular(CFST) column-RC beam joint, on which some shear bars were stuck to improve the shear resistant capacity. The parameters of concrete strength, shear span ratio, bar position, dowel action ,etc. were taken into account in the research. The test results show that the shear bar may serve as an effective means for shear transfer. The experimental research also serves as a good reference to the design of the CFST column-RC beam joint.