J. Cox, L. Herrmann
{"title":"Validation of a plasticity bond model for steel reinforcement","authors":"J. Cox, L. Herrmann","doi":"10.1002/(SICI)1099-1484(199907)4:4<361::AID-CFM66>3.0.CO;2-F","DOIUrl":null,"url":null,"abstract":"The validation of a plasticity model for bond between ribbed, steel bars and concrete is discussed. The model relates local slip and radial dilation to bond stress and radial confinement stress, i.e. it provides an interface characterization of the behaviour of a finite-thickness region around the bar—the bond zone. The validation study considers experimental results from six independent investigations. The specimens are all pull-out specimens but differ significantly in size and configuration. Models for each specimen, based on a single bond model calibration, reproduce the experimental results with acceptable accuracy. The response over the full range of slip and the mode of failure are examined. Some of the model's strengths, weaknesses, and potential improvements are discussed. For the most part, the models predicts the experimental bond strength within 20 per cent and exhibits the potential to predict both pull-out and splitting failures. Copyright © 1999 John Wiley & Sons, Ltd.","PeriodicalId":100899,"journal":{"name":"Mechanics of Cohesive-frictional Materials","volume":"1 1","pages":"361-389"},"PeriodicalIF":0.0000,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"29","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Mechanics of Cohesive-frictional Materials","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1002/(SICI)1099-1484(199907)4:4<361::AID-CFM66>3.0.CO;2-F","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 29
钢筋塑性粘结模型的验证
讨论了钢筋钢筋混凝土粘结塑性模型的验证问题。该模型将局部滑移和径向膨胀与粘结应力和径向约束应力联系起来,即它提供了棒材粘结区周围有限厚度区域行为的界面表征。验证研究考虑了来自六个独立调查的实验结果。试样均为拉出试样,但尺寸和形态有较大差异。每个样品的模型,基于单一键模型校准,以可接受的精度再现实验结果。研究了全滑移范围内的响应和破坏模式。讨论了该模型的一些优点、缺点和潜在的改进。在大多数情况下,该模型预测的实验粘结强度在20%以内,并显示出预测拔出和分裂破坏的潜力。版权所有©1999 John Wiley & Sons, Ltd
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