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为改善低矮剪力墙的抗震性能,设计了一种空腔剪力墙.分析了配筋的普通剪力墙、开暗缝剪力墙和空腔剪力墙在侧向荷载下受力特点的差异,建立了空腔剪力墙的理论计算模型,推导了空腔剪力墙在侧向荷载作用下的等效抗侧刚度和内力的计算公式,并对影响空腔剪力墙刚度的各参数进行了探讨,研究了各参数的影响规律.结果表明,空腔剪力墙降低了构件刚度和承载力,提高了延性,通过改变空腔的参数,可实现剪力墙刚度、承载力和延性的合理匹配.不同参数的模型验证结果表明,理论计算公式误差在15%以内,可满足工程估测需要.对于低矮剪力墙,通过合理改变空腔的长度和厚度,不仅可以降低自重,还可以较为显著地降低剪力墙刚度,从而达到减小地震作用的目的.
In order to improve the seismic performance of low shear walls, a cavity shear wall is designed. The reinforced common shear walls, open shear wall and cavity shear walls are analyzed under lateral load The theoretical calculation model of cavity shear wall is established and the equivalent formula of lateral stiffness and internal force of cavity shear wall is deduced. And the influence of the stiffness of cavity shear wall The results show that the cavity shear wall can reduce the stiffness and the bearing capacity of the member and improve the ductility. By changing the parameters of the cavity, the stiffness of the shear wall can be achieved and the bearing capacity Force and ductility.The results of model validation with different parameters show that the error of theoretical calculation formula is less than 15%, which can meet the needs of engineering estimation.For the low shear wall, by reasonably changing the cavity length and thickness, not only can Reduce self-weight, but also can significantly reduce the shear wall stiffness, so as to achieve the purpose of reducing the earthquake.