预制轻质承重墙单调静力性能试验研究

Test on precast lightweight concrete load-bearing walls under monotonic loading

为了推广应用预制轻质混凝土承重墙,本文以一幢2层预制混凝土结构实际工程为背景,通过足尺预制轻质混凝土承重墙开展了单调静力荷载试验,对墙体裂缝分布、破坏形态等进行了较系统的研究。试验结果表明预制轻质混凝土墙的破坏主要集中于墙体与地梁之间的连接处,墙体自身的破坏并不显著;最终破坏时,墙内纵向钢筋未屈服,表明应该加强预制墙体与地梁之间的连接。

In order to promote the use of precast lightweight concrete load-bearing walls,a full-scale precast lightweight concrete load-bearing wall,which was designed according to a two story prototype residential building,was tested under monotonic loading. Behavior of the test specimen was evaluated in terms of distribution of cracks,failure mode,etc. Test results showed that the damage of the test specimen was mainly distributed around the connection between the precast lightweight concrete wall and the ground beam,and the destruction of the wall itself was not significant; the tensile longitudinal reinforcements did not yield,which showed that the connection between the precast wall and the ground beam should be further strengthened.