足尺夹心保温外挂墙板拟静力试验研究

Pseudo-static Test Study on Full-scale Precast Concrete Sandwich Facade Panel

为了深入了解水平荷载下外挂墙板的变形特点以及与主体结构连接的有效性,开展了足尺外挂墙板拟静力试验,结果表明,采用点支撑时,外挂墙板与主体结构间的连接可靠,当层间位移角达到1/50时,未发生连接失效;外挂墙板间的相对位移具有随着层间位移角增加而变大的趋势;当层间位移角>1%时,锚栓与连接件间的相对位移增加显著,二者间产生较大滑动;当层间位移角>1%时,外挂墙板与柱之间的相对位移增加较快;相同层间位移角下,正、反向的相对位移值不相同,说明在固定点外挂墙板的锚栓滑动时受到的阻力不同。

In order to understand the deformation characteristics of the external wall panel under horizontal load and the effectiveness of the connection with the main structure,the quasi-static test of the full-scale external wall panel is carried out.The results show that the connection between the external wall panel and the main structure is reliable when point support is used.When the inter-story displacement angle reaches 1/50,no connection failure occurs;the relative displacement between the external wall panels has a tendency to become larger as the inter-story displacement angle increases;when the inter-story displacement angle is greater than 1%,the relative displacement between the anchor bolt and the connector increases significantly,and a large displacement occurs between them;when the inter-story displacement angle exceeds 1%,the relative displacement between the external wall panel and the column increases rapidly;under the same inter-story displacement angle,the relative displacement values of the positive and negative directions are different,which show that the anchor bolts on the wall panel fixed point are not subjected to the same resistance when the slippage occurs.