{"title":"Reinforcing preloaded steel I-beams by considering welding heat effects and geometric imperfections","authors":"Masoud Mohammadzadeh, A. Bhowmick","doi":"10.1139/cjce-2022-0454","DOIUrl":null,"url":null,"abstract":"This paper presents a finite element (FE) analysis based study on the behavior of preloaded steel I-beams reinforced with cover plates welded to the bottom flanges of I-beams considering welding procedure simulation. FE analysis is conducted to study the effects of welding heat, welding sequence and weld length on the behavior of steel I-beams reinforced while under load. It is observed that an appropriate welding sequence and weld length can reduce the residual lateral deformations induced from welding. Based on the analyses, a welding segment of L/9, where L is the length of the beam, is recommended for practical applications. Also, initial geometrical imperfection is found to affect the value and direction of the residual deformation resulting from welding. Furthermore, preloading does not have any significant effect on the behavior of the I-beam reinforced at a preload level up to 50% of the strength of the unreinforced beam.","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":"20 4","pages":""},"PeriodicalIF":17.7000,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1139/cjce-2022-0454","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
This paper presents a finite element (FE) analysis based study on the behavior of preloaded steel I-beams reinforced with cover plates welded to the bottom flanges of I-beams considering welding procedure simulation. FE analysis is conducted to study the effects of welding heat, welding sequence and weld length on the behavior of steel I-beams reinforced while under load. It is observed that an appropriate welding sequence and weld length can reduce the residual lateral deformations induced from welding. Based on the analyses, a welding segment of L/9, where L is the length of the beam, is recommended for practical applications. Also, initial geometrical imperfection is found to affect the value and direction of the residual deformation resulting from welding. Furthermore, preloading does not have any significant effect on the behavior of the I-beam reinforced at a preload level up to 50% of the strength of the unreinforced beam.
本文基于有限元（FE）分析，研究了在工字钢底部翼缘上焊接盖板的预载钢工字钢的行为，并考虑了焊接程序模拟。通过 FE 分析，研究了焊接热量、焊接顺序和焊接长度对加固钢工字钢在受载时的行为的影响。结果表明，适当的焊接顺序和焊接长度可以减少焊接引起的残余横向变形。根据分析结果，建议在实际应用中采用 L/9 的焊接段，其中 L 为梁的长度。同时还发现，初始几何缺陷会影响焊接产生的残余变形的值和方向。此外，在预载水平达到未加固梁强度的 50%时，预载对加固工字钢的行为没有明显影响。
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
