{"title":"Lateral stiffness of partially infilled reinforced concrete (RC) frames","authors":"Birendra Nath Singha, Goutam Mondal","doi":"10.1016/j.istruc.2024.107532","DOIUrl":null,"url":null,"abstract":"<div><div>When infill is provided in a frame up to the full height of a column for a portion it is called a fully infilled frame (FIF). Whereas, when infill is provided up to a certain height of structural frames then it is called a partially infilled frame (PIF). Partial infills are often provided in buildings for ventilation purposes. Due to the devastating collapse of buildings in the presence of partial infill as evident from past earthquakes, researchers found it important to investigate the behavior of partial infill frames in lateral loading. The present study proposes a simplified macro modeling approach for PIFs based on finite element analysis. Different PIFs were considered based on parameters such as aspect ratio, and opening area. The study also proposes a reduction factor for the effective width of the off-diagonal strut in PIFs over that of the solid reinforced concrete (RC) infilled frame to calculate its initial lateral stiffness.</div></div>","PeriodicalId":48642,"journal":{"name":"Structures","volume":"70 ","pages":"Article 107532"},"PeriodicalIF":3.9000,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Structures","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352012424016849","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}
引用次数: 0
Abstract
When infill is provided in a frame up to the full height of a column for a portion it is called a fully infilled frame (FIF). Whereas, when infill is provided up to a certain height of structural frames then it is called a partially infilled frame (PIF). Partial infills are often provided in buildings for ventilation purposes. Due to the devastating collapse of buildings in the presence of partial infill as evident from past earthquakes, researchers found it important to investigate the behavior of partial infill frames in lateral loading. The present study proposes a simplified macro modeling approach for PIFs based on finite element analysis. Different PIFs were considered based on parameters such as aspect ratio, and opening area. The study also proposes a reduction factor for the effective width of the off-diagonal strut in PIFs over that of the solid reinforced concrete (RC) infilled frame to calculate its initial lateral stiffness.
期刊介绍：
Structures aims to publish internationally-leading research across the full breadth of structural engineering. Papers for Structures are particularly welcome in which high-quality research will benefit from wide readership of academics and practitioners such that not only high citation rates but also tangible industrial-related pathways to impact are achieved.
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