Publication:
Load-deflection analysis of pretensioned inverted T-beam with web openings

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dc.citedby1
dc.contributor.authorCheng H.T.en_US
dc.contributor.authorBashar S.M.en_US
dc.contributor.authorKamal N.M.en_US
dc.contributor.authorid54973908300en_US
dc.contributor.authorid57203590522en_US
dc.contributor.authorid26032672000en_US
dc.date.accessioned2023-12-29T07:54:51Z
dc.date.available2023-12-29T07:54:51Z
dc.date.issued2009
dc.description.abstractA precast, prestressed concrete girder with circular web openings allows building service systems (mechanical, electrical, communications, and plumbing) to cross the girder line within the member's depth, reducing a building's floor-to-floor height and the overall height of the structure. These height reductions have the potential to improve the competitiveness of total precast concrete structures versus other types of building systems. The experimental program reported in this paper tested five full-scale inverted-tee girders with circular web openings to failure, to evaluate the openings' effect on girder behavior. The girders failed in a ductile manner due to diagonal cracking above the openings. The tested girders were designed using available recommendations in the existing literatures. It was observed that concrete fractured from tension zones around an opening, with cracks developing vetically towards the beam flanges. A beam would collapse when the cracks reached the flanges. In the present work, an analytical solution is developed for the load-deflection calculation of prestressed beam with web openings at any load stage. The solution assumes a trilinear deflection response characterized by the flexural cracking initiation, steel yielding, and ultimate capacity. Closed form expressions are presented for the case of simple beams subjected to four-points loading. These expressions are modified from present ACI code equations by incorporating appropriate laboratory determined coefficients in order to predict more precisely with some degree of conservativeness on flexural load-point deflection with any extent of uncracked, postcracked, and postyielded region along their spans. Accordingly, a simplified analysis procedure is developed by adopting a trilinear load-deflection response. The effectiveness of the simplified procedure is demonstrated by comparing its results to those of the analytical solution and the experimental values.en_US
dc.description.natureFinalen_US
dc.identifier.epage872
dc.identifier.scopus2-s2.0-58849084139
dc.identifier.spage865
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-58849084139&partnerID=40&md5=a11175385a49a66b02493105407a6570
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/30861
dc.identifier.volume400-402
dc.pagecount7
dc.publisherTrans Tech Publications Ltden_US
dc.sourceScopus
dc.sourcetitleKey Engineering Materials
dc.subjectInverted T beam
dc.subjectPrestressed concrete
dc.subjectWeb opening
dc.subjectCracks
dc.subjectDeflection (structures)
dc.subjectFasteners
dc.subjectFlanges
dc.subjectFloors
dc.subjectPrecast concrete
dc.subjectPrestressed concrete
dc.subjectSoftware testing
dc.subjectCircular web openings
dc.subjectClosed-form expression
dc.subjectExperimental program
dc.subjectInverted T beam
dc.subjectLoad-deflection response
dc.subjectSimplified procedure
dc.subjectTotal-precast concrete
dc.subjectWeb openings
dc.subjectConcrete beams and girders
dc.titleLoad-deflection analysis of pretensioned inverted T-beam with web openingsen_US
dc.typeArticleen_US
dspace.entity.typePublication
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