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Cyclic Performance of RC Shear Wall Embedded with X-Shaped Web Reinforcement
Arabian Journal for Science and Engineering ( IF 2.6 ) Pub Date : 2021-01-15 , DOI: 10.1007/s13369-020-05318-4
Vijay Thiruchengode Jothimani , Srisanthi Vellalapalayam Guruswamy

Over the past few decades, the study on shear walls with various configurations of reinforcement detailing has shown significant growth due to its efficient performance under earthquake forces. The current work experimentally explores the seismic performance of reinforced concrete (RC) shear wall detailed with X-shaped web reinforcement configuration. Four numbers of 1:4 scaled models of RC shear wall specimens are tested under cyclic force combined with constant axial force. The first specimen is detailed with conventional reinforcement, whereas the remaining ones are detailed with X-shaped reinforcement embedded in the web portion. The failure characteristics and hysteresis curves of all the specimens are compared. The shear wall provided with more counts of X-shaped web reinforcement showed a desirable flexural failure mode with stable ductile hysteresis behavior. A theoretical equation is proposed to predict the lateral force capacity. Theoretically predicted lateral force showed a reasonable percentage of deviation compared with experimental lateral force. The experimental lateral capacity of RC shear wall was also verified using the finite element model in ANSYS software. It is observed that the results of FEA show similar patterns to the experimental one and predicted the non-linear behavior response of the specimen up to the peak stage. The structural properties including lateral strength, stiffness, energy dissipation and ductility are calculated at various loading stages. The results revealed that the specimens detailed with more counts of X-shaped web reinforcement showed improved elastic and inelastic response which resulted in superior structural properties compared with other specimens.



中文翻译:

嵌有X形腹板钢筋的RC剪力墙的循环性能

在过去的几十年中,对具有各种加固细节的剪力墙的研究表明,由于其在地震作用下的高效性能,其增长显着。当前的工作通过实验探索了带有X形腹板钢筋配置的钢筋混凝土(RC)剪力墙的抗震性能。在循环力和恒定轴向力的共同作用下,测试了四个数量为1:4的RC剪力墙样本的比例模型。第一个试样用传统的钢筋加固,其余的则用嵌入腹板部分的X形钢筋加固。比较了所有试样的破坏特性和磁滞曲线。设有更多数量的X形腹板钢筋的剪力墙显示出理想的挠曲破坏模式,并具有稳定的延性滞后行为。提出了一个理论方程来预测侧向力能力。理论上预测的横向力与实验横向力相比显示出合理的偏差百分比。还使用ANSYS软件中的有限元模型验证了RC剪力墙的实验侧向承载力。可以观察到,有限元分析的结果显示出与实验结果相似的模式,并预测了样品直至峰期的非线性行为响应。在不同的载荷阶段计算结构性能,包括侧向强度,刚度,能量耗散和延展性。

更新日期:2021-01-15
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