带ALC墙板钢管混凝土框架结构抗震性能试验研究

Experimental study on seismic behavior of concrete-filled steel tubular frames with ALC wall panels

为了研究地震作用下蒸压轻质加气混凝土(ALC)条板或砌块与钢管混凝土框架的共同受力性能和破坏机理,进行了1榀钢管混凝土框架和3榀带ALC条板或砌块钢管混凝土框架结构试件的低周反复荷载试验。研究参数为墙板厚度、墙板连接形式和墙板类型。观察试验全过程和结构破坏特征,分析试件顶部水平荷载与水平位移关系滞回曲线、延性系数、耗能能力等抗震性能指标。试验研究表明,采用U形钢卡、钩头螺栓和拉结筋等合理构造措施的ALC条板或砌块与钢管混凝土框架在地震作用下可以很好协同工作和共同受力,并具有良好的安全保障,可以在高层组合结构中应用和推广。

To study the interaction and failure mechanism between aerated lightweight concrete(ALC) wall panels or blocks and concrete-filled steel tubular(CFST) frames subjected to cyclic loadings,tests of one specimen of CFST frame and three specimens of CFST frames with ALC walls under cyclic loading were carried out.The test parameters included the panel thickness,panel connection type and the panel type.Test procedure and failure modes of the specimens were investigated.Hysteretic curves,ductility and energy dissipation were also analyzed.The test results show that using reasonable measurement of U-type connector,hooked bolt and tie bars,ALC panels or blocks and CFST frames can be in good cooperative work and mechanical behavior under seismic loadings.The CFST frames with ALC wall panels can be applied in high-rise composite structure buildings for their good seismic safety and performance.