空腔剪力墙受力机理的理论与数值分析

发布时间：2018-04-13 23:20

本文选题：空腔剪力墙 + 装配式结构　；参考：《东南大学学报(自然科学版)》2017年05期

【摘要】：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.
[Abstract]:In order to improve the seismic performance of low shear wall, a hollow shear wall is designed.In this paper, the differences of stress characteristics of reinforced shear wall, open slit shear wall and cavity shear wall under lateral load are analyzed, and the theoretical calculation model of cavity shear wall is established.The formulas for calculating the equivalent lateral stiffness and internal force of cavity shear wall under lateral load are derived. The parameters affecting the stiffness of cavity shear wall are discussed and the influence law of each parameter is studied.The results show that the stiffness, bearing capacity and ductility of the shear wall are reduced and the ductility is improved. By changing the parameters of the cavity, the reasonable matching of stiffness, bearing capacity and ductility of the wall can be realized.The results of model verification 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 length and thickness of the cavity, not only the weight of the wall can be reduced, but also the stiffness of the wall can be significantly reduced, thus the earthquake action can be reduced.
【作者单位】：东南大学土木工程学院;北京建筑大学土木与交通工程学院;
【基金】：国家自然科学基金重点资助项目(51438002)
【分类号】：TU398.2

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