施工缝对RC框架结构抗震性能影响的试验研究

施工缝的存在对混凝土结构的受力性能会产生影响。为了解施工缝预留的位置对RC框架结构抗震性能的影响,对预留有不同位置施工缝的两个框架结构进行了水平低周反复荷载试验;对其滞回曲线、骨架曲线、残余变形率和框架延性系数等进行比较和分析。结果表明:施工缝位置的改变后,框架的极限荷载、塑性变形能力和变形恢复能力等力学性能会有明显变化。

Study on the Seismic Performance of Frame Structure with Construction joint

Construction joint has impact on the mechanical performance of concrete structure. In order to study the affection of position of construction joint in RC frames during earthquakes, this presents a low cyclic loading test for two RC frames with construction joint at different locations to analyze the hysteretic curve, skeleton curve, the ratio of residual deformation and ductility coefficient of frame etc. The results show that after changing the position of construction joint, the mechanical properties such as ultimate load, plastic deformation capacity and deformation recovery capacity of the frame are changed obviously.