Structural Performance of Ferrocement Hollow Shear Walls Subjected to Lateral and Compressive Axial Loads

IF 3.6 3区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY
Yousry B. Shaheen, Boshra A. Eltaly, Samar Khairy, Sabry Fayed
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Abstract

In this study, ten shear walls were experimentally tested to examine behaviour of ferrocement hollow shear walls subjected to axial and lateral loads. Ferrocement mortar (FM) was used to build eight walls, while normal concrete (NC) was used to build two controls. Walls were lateral reinforced using conventional stirrups, two layers of welded wire mesh (WWM), and expanded steel mesh (ESM). Two specimens lacked lateral reinforcement except for one transverse web in the center of the inner hole. Two symmetric groups of five walls each were created by dividing the walls. While the other group was loaded laterally, one group was loaded axially. In each group, the load–displacement relationship, maximum load and associated displacement, stiffness, ductility, and failure mechanism of FM and NC walls were compared. The results showed that FM walls provided with ESM and WWM had ultimate axial loads that were, respectively, 36% and 19% higher than NC control walls. Ultimate lateral loads and related ultimate drifts of FM walls reinforced with two layers of WWM and ESM were, respectively, 68% and 39%, 96% and 43.5%, larger than control NC wall. For lateral loads greater than those applied to the NC control wall, stiffness increase ratios for FM walls ranged from 2.5% to 89.5%, and for axial loads, they ranged from 20% to 150.5%. The ductility of FM walls increased when compared to NC walls by 58.5% and 158.8% for axial and lateral loading, respectively, when two layers of WWM were utilized to lateral reinforce FM walls. When two layers of ESM were applied to laterally reinforce FM walls in comparison to an NC wall, this increased the walls' ductility under axial and lateral loads by 110.5% and 214.7%, respectively.

Abstract Image

承受侧向和压缩轴向荷载的铁水泥空心剪力墙的结构性能
本研究对十堵剪力墙进行了实验测试,以检验铁水泥空心剪力墙在轴向和侧向荷载作用下的性能。八堵墙采用铁水泥砂浆(FM),两堵对照墙采用普通混凝土(NC)。墙体采用传统箍筋、两层焊接钢丝网(WWM)和膨胀钢网(ESM)进行侧向加固。除了内孔中心的一个横向腹板外,两个试样没有横向加固。通过分割墙体,形成了两组对称的墙体,每组五面。一组承受横向荷载,另一组承受轴向荷载。在每组中,比较了调频墙和数控墙的荷载-位移关系、最大荷载和相关位移、刚度、延展性和破坏机制。结果显示,装有 ESM 和 WWM 的调频墙体的极限轴向荷载分别比 NC 控制墙体高出 36% 和 19%。使用两层 WWM 和 ESM 加固的调频墙体的极限侧向荷载和相关极限漂移分别比 NC 控制墙体大 68% 和 39%,以及 96% 和 43.5%。在横向荷载大于 NC 控制墙体时,调频墙体的刚度增加率为 2.5% 至 89.5%,在轴向荷载时,刚度增加率为 20% 至 150.5%。当使用两层 WWM 对调频墙进行侧向加固时,调频墙在轴向和侧向荷载下的延性比 NC 墙分别增加了 58.5% 和 158.8%。与 NC 墙体相比,当使用两层 ESM 对 FM 墙体进行横向加固时,墙体在轴向和侧向荷载下的延展性分别提高了 110.5% 和 214.7%。
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来源期刊
International Journal of Concrete Structures and Materials
International Journal of Concrete Structures and Materials CONSTRUCTION & BUILDING TECHNOLOGY-ENGINEERING, CIVIL
CiteScore
6.30
自引率
5.90%
发文量
61
审稿时长
13 weeks
期刊介绍: The International Journal of Concrete Structures and Materials (IJCSM) provides a forum targeted for engineers and scientists around the globe to present and discuss various topics related to concrete, concrete structures and other applied materials incorporating cement cementitious binder, and polymer or fiber in conjunction with concrete. These forums give participants an opportunity to contribute their knowledge for the advancement of society. Topics include, but are not limited to, research results on Properties and performance of concrete and concrete structures Advanced and improved experimental techniques Latest modelling methods Possible improvement and enhancement of concrete properties Structural and microstructural characterization Concrete applications Fiber reinforced concrete technology Concrete waste management.
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