{"title":"Effect of confinement on bond strength between self-compacting concrete and reinforcement","authors":"M. Sabau, T. Oneţ, A. Petean","doi":"10.6084/M9.FIGSHARE.3482981.V1","DOIUrl":"https://doi.org/10.6084/M9.FIGSHARE.3482981.V1","url":null,"abstract":"Slippage of the beam reinforcement at beam–column connections is an important cause of damage of reinforced frames under static and dynamic loads. This paper presents the effects of confinement in self-compacting concrete (SCC), on the local bond stress vs. slip characteristics of deformed bars in reinforced concrete joints. Prismatic specimens with deformed steel bars embedded for a fixed length equal to three and five equivalent diameters were tested under monotonic loading. The specimens represented the confined region of a beam–column connection. The obtained results indicated that as far as the bond splitting cracks are restrained by reinforcing bars crossing these cracks, confinement of concrete by transverse reinforcement has insignificant effect on the local bond behavior. The specimens having no confining reinforcement failed by splitting of the concrete in the plane of the longitudinal axis of the bar at small bond stress. The failure of specimens with confined concrete was caused by pulling out of the bars at steel stresses below yield strength.","PeriodicalId":30094,"journal":{"name":"Bulletin of the Polytechnic Institute of Jassy Constructions Architechture Section","volume":"64 9 1","pages":"203-210"},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88864754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Numerical Analysis of Composite Steel Concrete Structural Shear Walls with Steel Encased Profiles","authors":"D. Dan, V. Stoian, A. Fabian","doi":"10.1201/9780203861592.ch49","DOIUrl":"https://doi.org/10.1201/9780203861592.ch49","url":null,"abstract":"The use of common reinforced concrete shear walls in high rise buildings is sometimes limited because of the large amount of reinforcement localized at the end of the element. A good alternative in avoiding this disadvantage is to use composite steel concrete structural shear walls with steel encased profiles. This solution used for high rise buildings, offers to designers lateral stiffness, shear capacity and high bending resisting moment of structural walls. The encasement of the steel shapes in concrete is applied also for the following purposes: flexural stiffening and strengthening of compression elements; fire protection; potentially easier repairs after moderate damage; economy with respect both to material and construction. Until now in the national and international literature poor information about nonlinear behaviour of composite steel concrete structural shear walls with steel encased profiles is available. A theoretical and experimental program related to the behaviour of steel concrete structural shear walls with steel encased profiles is developed at “Politehnica” University of Timisoara. The program refers to six different elements, which differ by the shape of the steel encased profile and also by the arrangement of steel shapes on the cross section of the element. In order to calibrate the elements for experimental study some numerical analysis were made. The paper presents the results of numerical analysis with details of stress distribution, crack distribution, structural stiffness at various loads, and load bearing capacity of the elements.","PeriodicalId":30094,"journal":{"name":"Bulletin of the Polytechnic Institute of Jassy Constructions Architechture Section","volume":"12 1","pages":"21-32"},"PeriodicalIF":0.0,"publicationDate":"2009-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87628801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}