带构造柱双排孔混凝土空心砌块墙抗震性能试验研究

双排孔混凝土小型空心砌块中间孔洞较小无法设置芯柱,故设置构造柱是提高这种砌块建筑水平抗侧力性能的主要措施。为了研究这种结构体系的抗震性能,本文对7个设置构造柱双排孔混凝土空心砌块承重墙原型试件进行了低周反复荷载试验。得到了其承载力、延性和耗能等实测数据,并分析了墙片单元X形裂缝的破坏特征。试验及分析表明,双排孔混凝土小型空心砌块承重墙片在采用了约束构造柱等措施后,约束构造柱对墙体可起到有效约束作用,使破碎的墙体不倒塌,具有良好的抗震性能。

Experimental study on seismic behavior of small concrete hollow block walls restricted by constructional columns

The small-size concrete hollow block wall with two-row-holes can not set up core columns due to the small cavity in the two-row-hole block, thus placing constructional columns become the main structural form in these buildings. In order to study the seismic behavior of this system, the experiment of 7 full scale specimens under cyclic loading was carried out,and the measured data of their load carrying capacity, ductility and energy dissipation, etc. were obtained with their failure characters analyzed. It is shown that the constructional columns have an effective restriction on the broken specimen, and the damaged specimens with restricting constructional columns at the boundary do not collapse and have good seismic behavior.