无填充块木结构的剪力墙变形实验研究

Experimental Research on the Deformation of Unblocked Shear Walls in Wood Frame Structures

对于无填充块木结构的剪力墙,因为没有填充块来连接墙骨,其变形主要由墙骨变形产生。用曲线描述墙骨的变形,即可从墙顶的位移得知墙骨上每一点的变形。墙骨上的变形,主要由钉节点的变形引起,通过钉节点变形性能公式,可以得到墙骨变形与力的关系,叠加可得整片墙体的受力与变形关系。通过以上对力学模型和实际变形相关关系的分析,以及力学关系的推导,提出无填充块剪力墙的受力变形计算公式。将计算公式与实验结果相比较,二者吻合情况较好,表明提出的无填充块剪力墙的受力变形计算公式具有一定的实用价值。

Mechanical model of unblocked shear walls was analyzed, it＇ s characteristic of deformation from unblocking was obtained, the studs contribute most of the deformation. By describing the deformation with curve, the deformation of the studs from the displacement of the top of wall can be cbtaineal. And the nail slip makes the main deformation of the stud, so from the formula of nail slip, the load-deform relation of studs and the whole wall can be estimated. Through study on the relationship between mechanical model and actual deformation, an equation of unblocked shear wall deformation was provided. The result of the equation matches with that of the experiment, which indicates that the mechanical model is correct.