预制装配式混凝土墙板螺栓连接抗剪性能试验研究

Experimental Study on Shear Behavior of the Bolt Connection of Prefabricated Concrete Wallboard

为研究预制装配式混凝土墙板螺栓连接的抗剪性能,通过对4个采用装配式螺栓连接的预制墙板结构试件进行单向反复加载试验,获得试件的滞回曲线、骨架曲线、特征荷载与位移;在此基础上对装配式螺栓连接的刚度退化情况以及延性指标进行计算和分析。研究结果表明:装配式螺栓连接具有良好的承载力、刚度及耗能能力,是一种可靠的干连接方式;通过对薄弱部位进行箍筋加密和增加螺栓的个数,能显著提高装配式螺栓连接的抗剪性能。

To study the shear behavior of the bolt connection of prefabricated concrete wallboard,through one-way repeated loading test of the four specimens with concrete prefabricated bolt joint,the hysteresis curves,skeleton curves,the characteristic load and displacement of the specimens were obtained. Furthermore,stiffness degradation and ductility index of the specimen were calculated and analyzed. The results showed that the fabricated bolt connection with good bearing capacity,stiffness and energy dissipation capacity,is a reliable way of dry connection. Through adopting stirrup densification to the weak part and increasing the number of bolts,the shear behavior of prefabricated bolt connection could be significantly improved.