{"title":"Reliability of load-Deformation Estimate for High-Strength Reinforced Concrete Beams","authors":"S. Otani, S. Nagai","doi":"10.14359/5899","DOIUrl":null,"url":null,"abstract":"The applicability of methods, routinely used in Japan in evaluating the force-deformation relationship of normal reinforced concrete (RC) members, was examined for high-strength RC beams. The member end moment-rotation relationship was idealized into a trilinear relation with stiffness change at \"cracking\" and \"yielding.\" The routine methods overestimate significantly the observed initial stiffness and underestimate yield deformation. A wide scatter is reported in the observed cracking moment. Yield and ultimate resistance can be conservatively estimated by the routine procedure.","PeriodicalId":208613,"journal":{"name":"SP-176: High-Strength Concrete in Seismic Regions","volume":"28 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"SP-176: High-Strength Concrete in Seismic Regions","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.14359/5899","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
The applicability of methods, routinely used in Japan in evaluating the force-deformation relationship of normal reinforced concrete (RC) members, was examined for high-strength RC beams. The member end moment-rotation relationship was idealized into a trilinear relation with stiffness change at "cracking" and "yielding." The routine methods overestimate significantly the observed initial stiffness and underestimate yield deformation. A wide scatter is reported in the observed cracking moment. Yield and ultimate resistance can be conservatively estimated by the routine procedure.
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