{"title":"考虑焊接热效应和几何缺陷,加固预载工字钢","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":9414,"journal":{"name":"Canadian Journal of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"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\":9414,\"journal\":{\"name\":\"Canadian Journal of Civil Engineering\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2024-04-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Canadian Journal of Civil Engineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1139/cjce-2022-0454\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, CIVIL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Canadian Journal of Civil Engineering","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1139/cjce-2022-0454","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}
引用次数: 0
摘要
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。
Reinforcing preloaded steel I-beams by considering welding heat effects and geometric imperfections
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.
期刊介绍:
The Canadian Journal of Civil Engineering is the official journal of the Canadian Society for Civil Engineering. It contains articles on environmental engineering, hydrotechnical engineering, structural engineering, construction engineering, engineering mechanics, engineering materials, and history of civil engineering. Contributors include recognized researchers and practitioners in industry, government, and academia. New developments in engineering design and construction are also featured.