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Shear Capacity Of Prestressed Concrete Beams
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Book Synopsis Shear Capacity of Prestressed Concrete Beams by : Brian Richard Runzel
Download or read book Shear Capacity of Prestressed Concrete Beams written by Brian Richard Runzel and published by . This book was released on 2007 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: The shear provisions of the American Association of State Highway and Transportation Officials bridge design code have changed significantly in recent years. The 2004 Load and Resistance Factor Design (LRFD) and 2002 Standard shear provisions for the design of prestressed concrete bridge girders typically require more shear reinforcement than the 1979 Interim shear provisions. The purpose of this research was to determine whether or not bridge girders designed according to the 1979 interim shear provisions were underdesigned for shear and develop a method to identify potentially underdesigned girders. Two shear capacity tests were performed on opposite ends of a bridge girder removed from Mn/DOT Bridge No. 73023. The stirrup spacing in the girder suggested it was designed according to the 1979 Interim shear provisions. The results from the shear tests indicated the girder was capable of holding the required shear demand because the applied shear at failure for both tests was larger than the factored shear strength required by the 2004 LRFD HL-93 and 2002 Standard HS20-44 loading. The results of a parametric study showed that girders designed using the 1979 Interim were most likely to be underdesigned for shear near the support and that the girders most likely to be underdesigned in this region had smaller length to girder spacing ratios.
Book Synopsis Shear Capacity of Prestressed Concrete Beams Reinforced with FRP Reinforcement by : Daniel Mal Bok Dowden
Download or read book Shear Capacity of Prestressed Concrete Beams Reinforced with FRP Reinforcement written by Daniel Mal Bok Dowden and published by . This book was released on 1997 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Shear Capacity of Composite Prestressed Concrete Beams by : Elzbieta Saran
Download or read book Shear Capacity of Composite Prestressed Concrete Beams written by Elzbieta Saran and published by . This book was released on 1989 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Concrete Beams with Openings by : M. A. Mansur
Download or read book Concrete Beams with Openings written by M. A. Mansur and published by CRC Press. This book was released on 1999-01-29 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book compiles state-of-the-art information on the behavior, analysis, and design of concrete beams containing transverse openings. Discussions include the need, effects, and classification of openings as well as the general requirements for fulfilling design pure bending, combined bending, and shear - illustrated with numerical examples torsion alone or in combination with bending and shear large rectangular openings as well as opening size and location on beam behavior methods for analyzing ultimate strength and serviceability requirements effects of torsion in beams large openings in continuous beams and their effects on possible redistribution of internal forces as well as guidelines and procedures for the design of such beams effect of prestressing on the serviceability and strength of beams with web openings design against cracking at openings and ultimate loads Concrete Beams with Openings serves as an invaluable source of information for designers and practicing engineers, especially useful since little or no provision or guidelines are currently available in most building codes.
Author :National Cooperative Highway Research Program Publisher :Transportation Research Board ISBN 13 :0309088445 Total Pages :64 pages Book Rating :4.3/5 (9 download)
Book Synopsis Simplified Shear Design of Structural Concrete Members by : National Cooperative Highway Research Program
Download or read book Simplified Shear Design of Structural Concrete Members written by National Cooperative Highway Research Program and published by Transportation Research Board. This book was released on 2005 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: "TRB's National Cooperative Highway Research Program (NCHRP) Report 549: Simplified Shear Design of Structural Concrete Members examines development of practical equations for design of shear reinforcement in reinforced and prestressed concrete bridge girders. The report also includes recommended specifications, commentary, and examples illustrating application of the specifications. NCHRP Web-Only Document 78 contains extensive supporting information, including a database that can be used to compare the predictions from the recommended procedures to existing design procedures"--Publisher's description
Book Synopsis Shear Capacity of High Strength Prestressed Concrete Girders by : David L. Hartmann
Download or read book Shear Capacity of High Strength Prestressed Concrete Girders written by David L. Hartmann and published by . This book was released on 1988 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Shear Capacity of in Service Prestressed Concrete Bridge Girders by : Paul Barr
Download or read book Shear Capacity of in Service Prestressed Concrete Bridge Girders written by Paul Barr and published by . This book was released on 2010 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design procedure to calculate the shear capacity of bridge girders that was used forty years ago is very different than those procedures that are recommended in the current AASHTO LRFD Specifications. As a result, many bridge girders that were built forty years ago do not meet current design standards, and in some cases warrant replacement due to insufficient calculated shear capacity. However despite this insufficient calculated capacity, these bridge girders have been found to function adequately in service with minimal signs of distress. The objective of this research was to investigate the actual in service capacity of prestressed concrete girders that have been in service over an extended period of time.
Book Synopsis Shear Strength of Concrete Beams Prestressed with CFRP Cables by : Mirpayam Nabipaylashgari
Download or read book Shear Strength of Concrete Beams Prestressed with CFRP Cables written by Mirpayam Nabipaylashgari and published by . This book was released on 2012 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis investigates the shear capacity of concrete T-beams prestressed with CFRP cables (CFCC) and contributes to the scarce research available for shear behavior of FRP prestressed concrete beams. Four beams are tested under distributed load, while twelve beams are tested under four point bending. Three different a/d ratios of 1.5, 2.5 and 3.5 are investigated. The results show that the shear capacity of the beams increases significantly when a/d is reduced below 2.5. The effect of FRP stirrups on the shear capacity of the beams is investigated and it is shown that the minimum required stirrups according to CSA-S6-10 are ineffective in deep beams with a/d = 1.5. The accuracy of current North American shear design formulas for FRP prestressed concrete beams subjected to four-point bending and distributed load is evaluated. The available strut and tie models are studied for determining the shear capacity of FRP prestressed deep beams.
Book Synopsis Shear Strength of Some 30-year-old Prestressed Beams Without Links by : D. W. Cullington
Download or read book Shear Strength of Some 30-year-old Prestressed Beams Without Links written by D. W. Cullington and published by . This book was released on 1991 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ultimate Shear Capacity and Residual Prestress Force of Full-scale, Forty-one-year-old Prestressed-concrete Girders by : Parry Osborn
Download or read book Ultimate Shear Capacity and Residual Prestress Force of Full-scale, Forty-one-year-old Prestressed-concrete Girders written by Parry Osborn and published by . This book was released on 2010 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ultimate shear capacity of prestressed concrete beams is difficult to predict accurately, especially after being in service for an extended period of time. The Utah Department of Transportation asked researchers at Utah State University to experimentally determine the existing shear capacity of 41-year-old prestressed, decommissioned concrete bridge girders and then provide recommendations on how to increase that ultimate shear capacity. This thesis presents the research findings that relate to the existing shear capacity of the prestressed concrete girders. Eight AASHTO Type II bridge girders were tested up to failure by applying external loads near the supports to determine their ultimate shear capacities. The measured results were then compared to calculated values obtained using the AASHTO LRFD bridge design code, and the ACI 318-08 design code. Prestress losses were also measured by means of a cracking test and then compared to values calculated according to the AASHTO prestress loss equations. Both the ultimate shear capacities and the residual prestress forces were used to evaluate the girders after being in service for more than 40 years.
Book Synopsis The Ultimate Load Design of Continuous Concrete Beams by : Derrick Beckett
Download or read book The Ultimate Load Design of Continuous Concrete Beams written by Derrick Beckett and published by Springer. This book was released on 2013-12-01 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Shear Strength Models for Reinforced and Prestressed Concrete Members by : Martin Herbrand
Download or read book Shear Strength Models for Reinforced and Prestressed Concrete Members written by Martin Herbrand and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Increasing the Allowable Compressive Stress at Release on the Shear Strength of Prestressed Concrete Girders by : Christopher Heckmann
Download or read book Effects of Increasing the Allowable Compressive Stress at Release on the Shear Strength of Prestressed Concrete Girders written by Christopher Heckmann and published by . This book was released on 2008 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Predicting the Shear Capacities of Prestressed Concrete Beams by : Richard K. Kwan
Download or read book Predicting the Shear Capacities of Prestressed Concrete Beams written by Richard K. Kwan and published by . This book was released on 1984 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rotational Model for the Determination of the Shear Capacity of Reinforced and Prestressed Concrete Structures by : Asko Sarja
Download or read book Rotational Model for the Determination of the Shear Capacity of Reinforced and Prestressed Concrete Structures written by Asko Sarja and published by . This book was released on 1982 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Shear Strength Models for Reinforced and Prestressed Concrete Members by : Dr.-Ing. Martin Herbrand
Download or read book Shear Strength Models for Reinforced and Prestressed Concrete Members written by Dr.-Ing. Martin Herbrand and published by Beuth Verlag GmbH. This book was released on 2018-08-13 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis, a mechanical flexural shear model for beams without shear reinforcement is derived that accountsfor the shear transfer actions from direct strut action, compression zone, crack processing zone, aggregateinterlock and dowel action. Based on the mechanical model, a simplified closed form Critical CrackWidth Model is derived. By linking the flexural shear capacity with flexural crack widths, the influence of axialforces can be accounted for consistently within this model. The comparison of the model with shear tests onRC beams, PC beams and RC beams in tension shows a very good agreement and it can be concluded thatall relevant influence parameters are considered correctly.AbsatzMoreover, the shear capacity of beams with shear reinforcement was investigated. The behavior of beamswith very little shear reinforcement can be considered similar to the behavior of beams without shear reinforcement,but with an additional stirrup contribution. For higher shear reinforcement ratios, the beams behavein agreement with an equilibrium based truss model with a variable strut inclination. To distinguish thesefailure modes in a consistent manner, a criterion based on the mechanical shear reinforcement ratio ofthe beam was derived. On this basis, shear design procedures for the design of new structures as well as forthe economic assessment of existing structures are presented. The partial safety factors for the proposedmodels are determined by probabilistic evaluations according to EN 1990. This thesis thus presents a comprehensiveprocedure for design and assessment of structures under shear loading. Judging from test evaluationsit can be expected that the presented approaches will be especially beneficiary for the assessment ofexisting structures like bridges.
Author :Institution of Structural Engineers (Great Britain). Shear Study Group Publisher : ISBN 13 : Total Pages :192 pages Book Rating :4.:/5 (89 download)
Book Synopsis The Shear Strength of Reinforced Concrete Beams by : Institution of Structural Engineers (Great Britain). Shear Study Group
Download or read book The Shear Strength of Reinforced Concrete Beams written by Institution of Structural Engineers (Great Britain). Shear Study Group and published by . This book was released on 1969 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
