王斌, 史庆轩, 蔡文哲, 彭一功, 李涵. RC带翼缘剪力墙变形能力计算方法研究[J]. 工程力学, 2020, 37(3): 167-175,216. DOI: 10.6052/j.issn.1000-4750.2019.04.0219
引用本文: 王斌, 史庆轩, 蔡文哲, 彭一功, 李涵. RC带翼缘剪力墙变形能力计算方法研究[J]. 工程力学, 2020, 37(3): 167-175,216. DOI: 10.6052/j.issn.1000-4750.2019.04.0219
WANG Bin, SHI Qing-xuan, CAI Wen-zhe, PENG Yi-gong, LI Han. RESEARCH ON THE CALCULATION METHOD FOR THE DEFORMATION CAPACITY OF RC SHEAR WALLS WITH A FLANGE[J]. Engineering Mechanics, 2020, 37(3): 167-175,216. DOI: 10.6052/j.issn.1000-4750.2019.04.0219
Citation: WANG Bin, SHI Qing-xuan, CAI Wen-zhe, PENG Yi-gong, LI Han. RESEARCH ON THE CALCULATION METHOD FOR THE DEFORMATION CAPACITY OF RC SHEAR WALLS WITH A FLANGE[J]. Engineering Mechanics, 2020, 37(3): 167-175,216. DOI: 10.6052/j.issn.1000-4750.2019.04.0219

RC带翼缘剪力墙变形能力计算方法研究

RESEARCH ON THE CALCULATION METHOD FOR THE DEFORMATION CAPACITY OF RC SHEAR WALLS WITH A FLANGE

  • 摘要: 通过3个T形截面RC剪力墙的拟静力试验,分析了各变形分量所占比重及其在加载过程中的变化规律。以此为基础,基于截面的弯矩-曲率分析,采用考虑等效塑性铰区高度变化的集中塑性铰模型建立了墙肢弯曲变形计算方法,通过对Lowes滑移模型的修正建立了纵筋滑移引起的变形计算方法,根据剪应变与曲率间的线性关系建立了剪切变形计算方法。据此提出了一种全新的考虑弯曲、纵筋滑移和剪切变形贡献的带翼缘剪力墙荷载-变形分析模型,其计算结果与试验吻合良好。研究表明,该文提出的分析模型不但变形分量计算明确,对层间位移及任意高度处的变形均可做出准确估计,同时对于不同截面形式的剪力墙具有广泛的适用性,为性能设计和性能评估提供了一种有效的分析手段,可供工程设计参考。

     

    Abstract: Through quasi-static tests on three T-shaped reinforced concrete shear walls, the proportion of each deformation component and its variation in the loading process were analyzed. Based on the experimental observation and a moment-curvature analysis, a method for calculating the flexural deformation of the wall panel was established by using the plastic hinge model with the change of the equivalent plastic hinge height taken into consideration. A method for calculating the deformation caused by the slip of longitudinal bars was established by modifying the slip model by Lowes. A method for calculating the shear deformation was established based on the linear relationship between the shear strain and curvature. Accordingly, a new load-deformation analysis model including the contributions of flexural, slip and shear deformations was proposed. The good agreement between the analytical and experimental results confirmed the validity of the proposed model. The research shows that the proposed model not only has a clear determination on each deformation component, but also can accurately estimate the story drift and the deformations at any height. Furthermore, the proposed model is applicable to shear walls with different cross sections, and provides an effective analysis method for the performance design and performance evaluation, which can be used as a reference for engineering design.

     

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