T型剪力墙骨架曲线计算方法及试验验证

发布时间：2018-11-19 20:41

【摘要】：为研究T型剪力墙在腹板受压时的力-位移骨架曲线,提出将截面弯矩-曲率骨架曲线及构件的力-位移骨架曲线均简化为以开裂点、屈服点、峰值点和极限点为特征点的四折线模型;然后基于平截面假定和传统的弯曲理论,考虑边缘约束构件对峰值点、极限点的影响,建立压弯荷载作用下T型剪力墙截面弯矩-曲率关系的四个特征点值的计算公式,并据此推导出T型剪力墙构件的力与位移骨架曲线的四个特征点的计算公式。为验证公式的合理性,结合T型剪力墙拟静力试验,将试验结果与计算结果进行比较。研究结果表明:T型剪力墙构件的力与位移的四折线型骨架曲线与试验得到的骨架曲线基本一致,可为基于性能的T型剪力墙抗震分析与设计提供参考。
[Abstract]:In order to study the force-displacement skeleton curve of T-type shear wall under web compression, it is proposed that the bending moment curvature skeleton curve of section and the force displacement skeleton curve of members be simplified to crack point and yield point. A four-fold line model with peak point and limit point as characteristic points; Then, based on the assumption of plane section and traditional bending theory, considering the influence of edge constrained members on peak point and limit point, the formulas for calculating the relationship between moment and curvature of T-shaped shear wall section under compression and bending load are established. Based on this, the calculation formulas of four characteristic points of the force and displacement skeleton curves of T-type shear wall members are derived. In order to verify the rationality of the formula, combined with the quasi-static test of T-type shear wall, the experimental results are compared with the calculated results. The results show that the 60% discounted linear skeleton curve of T-type shear wall member is basically consistent with the experimental skeleton curve, which can be used as a reference for seismic analysis and design of T-type shear wall based on performance.
【作者单位】：西南交通大学土木工程学院;
【基金】：国家自然科学基金资助项目(51278428) 中央高校基本科研业务费专项资金资助项目(2682014CX066)
【分类号】：TU398.2

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