Cyclic behavior of the reinforced concrete shear walls with opening retrofitted with steel plate

IF 3 3区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

Structural Concrete Pub Date : 2024-05-29 DOI:10.1002/suco.202300285

Fatemeh Abdoos, Majid Gholhaki, Ali Kheyroddin

{"title":"Cyclic behavior of the reinforced concrete shear walls with opening retrofitted with steel plate","authors":"Fatemeh Abdoos, Majid Gholhaki, Ali Kheyroddin","doi":"10.1002/suco.202300285","DOIUrl":null,"url":null,"abstract":"The reinforced concrete (RC) shear walls are widely used as the lateral load‐resisting system due to their adequate ductility and great energy dissipation capacity. On the other hand, use of these walls can reduce the size of the beams and columns and also, decreases the lateral displacements. However, presence of the openings in the shear walls alters the behavior of the wall and therefore, the dimensions and position of the opening play a key role in the performance of this structural system. In this study, an RC shear wall with eccentric opening was verified using ABAQUS software. This model, which is called the reference model, a wall and a pier have been created according to aspect ratios given by ACI318‐14. This model was retrofitted with the steel plates arranged in various patterns and effect of each pattern on the system's performance was investigated and the best one was selected. The best steel plate arrangement increased the ultimate strength, maximum strength, cracking strength, and energy dissipation capacity by 127.3%, 13.42%, 22.53%, and 16.8%, respectively. To practically use this retrofit technique, three low, mid, and high‐rise buildings designed based on the old and new versions of the Iranian Code of Practice for Seismic Resistant Design of Buildings (Standard 2800) were upgraded with this technique and their performance was evaluated and performance of the substandard and standard buildings were compared with each other. The research results showed the ST52 steel plates do not considerably increase the maximum and cracking strength and could enhance the ultimate strength insignificantly. By retrofitting the edges of the openings by the diagonal steel plates and preventing spread of the cracks at the edges and corners, satisfactory results could be attained. Simultaneous use of the vertical and horizontal plates is an effective solution to increase the flexural and shear capacity of the structure.","PeriodicalId":21988,"journal":{"name":"Structural Concrete","volume":"24 1","pages":""},"PeriodicalIF":3.0000,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Structural Concrete","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1002/suco.202300285","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

The reinforced concrete (RC) shear walls are widely used as the lateral load‐resisting system due to their adequate ductility and great energy dissipation capacity. On the other hand, use of these walls can reduce the size of the beams and columns and also, decreases the lateral displacements. However, presence of the openings in the shear walls alters the behavior of the wall and therefore, the dimensions and position of the opening play a key role in the performance of this structural system. In this study, an RC shear wall with eccentric opening was verified using ABAQUS software. This model, which is called the reference model, a wall and a pier have been created according to aspect ratios given by ACI318‐14. This model was retrofitted with the steel plates arranged in various patterns and effect of each pattern on the system's performance was investigated and the best one was selected. The best steel plate arrangement increased the ultimate strength, maximum strength, cracking strength, and energy dissipation capacity by 127.3%, 13.42%, 22.53%, and 16.8%, respectively. To practically use this retrofit technique, three low, mid, and high‐rise buildings designed based on the old and new versions of the Iranian Code of Practice for Seismic Resistant Design of Buildings (Standard 2800) were upgraded with this technique and their performance was evaluated and performance of the substandard and standard buildings were compared with each other. The research results showed the ST52 steel plates do not considerably increase the maximum and cracking strength and could enhance the ultimate strength insignificantly. By retrofitting the edges of the openings by the diagonal steel plates and preventing spread of the cracks at the edges and corners, satisfactory results could be attained. Simultaneous use of the vertical and horizontal plates is an effective solution to increase the flexural and shear capacity of the structure.

查看原文本刊更多论文

加装钢板的带开口钢筋混凝土剪力墙的循环行为

钢筋混凝土（RC）剪力墙具有足够的延展性和强大的消能能力，因此被广泛用作抗侧荷载系统。另一方面，使用这些剪力墙可以减小梁和柱的尺寸，还能减少侧向位移。然而，剪力墙中开口的存在会改变墙体的行为，因此，开口的尺寸和位置对这种结构系统的性能起着关键作用。在本研究中，使用 ABAQUS 软件对带有偏心开口的 RC 剪力墙进行了验证。该模型被称为参考模型，根据 ACI318-14 规定的长宽比创建了墙和墩。在该模型上加装了各种排列方式的钢板，并研究了每种排列方式对系统性能的影响，最终选出了最佳排列方式。最佳钢板排列方式使极限强度、最大强度、开裂强度和耗能能力分别提高了 127.3%、13.42%、22.53% 和 16.8%。为了实际应用这种改造技术，根据新旧版本的《伊朗建筑抗震设计规范》（标准 2800）设计的三栋低、中、高层建筑都采用了这种技术进行了改造，并对它们的性能进行了评估，同时还对不达标建筑和达标建筑的性能进行了比较。研究结果表明，ST52 钢板对最大强度和开裂强度的提高不大，对极限强度的提高也不明显。通过在开口边缘加装对角钢板，防止裂缝在边缘和拐角处蔓延，可以达到令人满意的效果。同时使用垂直和水平钢板是提高结构抗弯和抗剪能力的有效解决方案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Structural Concrete CONSTRUCTION & BUILDING TECHNOLOGY-ENGINEERING, CIVIL

CiteScore

5.60

自引率

15.60%

发文量

284

审稿时长

3 months

期刊介绍： Structural Concrete, the official journal of the fib, provides conceptual and procedural guidance in the field of concrete construction, and features peer-reviewed papers, keynote research and industry news covering all aspects of the design, construction, performance in service and demolition of concrete structures. Main topics: design, construction, performance in service, conservation (assessment, maintenance, strengthening) and demolition of concrete structures research about the behaviour of concrete structures development of design methods fib Model Code sustainability of concrete structures.