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Author: National Cooperative Highway Research Program Publisher: Transportation Research Board ISBN: 0309088445 Category : Concrete beams Languages : en Pages : 64
Book Description
"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
Author: National Cooperative Highway Research Program Publisher: Transportation Research Board ISBN: 0309088445 Category : Concrete beams Languages : en Pages : 64
Book Description
"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
Author: FIB – International Federation for Structural Concrete Publisher: FIB - International Federation for Structural Concrete ISBN: Category : Technology & Engineering Languages : en Pages : 157
Author: James R. Libby Publisher: Springer Science & Business Media ISBN: 1461539188 Category : Technology & Engineering Languages : en Pages : 880
Book Description
This book was written with a dual purpose, as a reference book for practicing engineers and as a textbook for students of prestressed concrete. It represents the fifth generation of books on this subject written by its author. Significant additions and revisions have been made in this edition. Chapters 2 and 3 contain new material intended to assist the engineer in understanding factors affecting the time-dependent properties of the reinforcement and concrete used in prestressing concrete, as well as to facilitate the evaluation of their effects on prestress loss and deflection. Flexural strength, shear strength, and bond of prestressed concrete members were treated in a single chapter in the of flexural strength has third edition. Now, in the fourth edition, the treatment been expanded, with more emphasis on strain compatibility, and placed in Chapter 5 which is devoted to this subject alone. Chapter 6 of this edition, on flexural-shear strength, torsional strength, and bond of prestressed reinforce ment, was expanded to include discussions of Compression Field Theory and torsion that were not treated in the earlier editions. In similar fashion, expanded discussions of loss of prestress, deflection, and partial prestressing now are presented separately, in Chapter 7. Minor additions and revisions have been made to the material contained in the remaining chapters with the exception of xv xvi I PREFACE Chapter 17. This chapter, which is devoted to construction considerations, has important new material on constructibility and tolerances as related to prestressed concrete.
Author: Eisuke Nakamura Publisher: ISBN: Category : Languages : en Pages : 416
Book Description
Development of shear databases attracted a great deal of attention in the shear research community within the last decade. Although a few shear databases have already been developed by several research groups, there is no comprehensive shear database that is focused on prestressed concrete members. This thesis aims to develop a shear database for prestressed concrete members with an intensive literature review. This literature review resulted in a database that contained a total of 1,696 tests reported in North America, Japan, and Europe from 1954 to 2010. The database was used to evaluate shear design provisions available in North America, Japan, and Europe. The variations in measured versus calculated shear strength using twelve shear design equations were analyzed. The analysis results indicated that design expressions based on the Modified Compression Filed Theory (MCFT) produced the best performance to estimate the shear strength of prestressed concrete members with sufficient shear reinforcement. The MCFT-based design expressions, however, provided unconservative strength estimations for members that failed in shear but exhibited signs of horizontal shear damage and/or anchorage zone distress. The ACI 318-08 detailed method was found to be less conservative than the MCFT-based design expressions. Additionally, on the basis of a careful examination of test results included in the database, a new limit for the minimum shear reinforcement was proposed. The database was also used to investigate the shear behavior of prestressed concrete members. This investigation revealed that there was no evidence of size effect in the shear strength of prestressed concrete members with sufficient shear reinforcement. Additionally, it was found that prestress force and shear reinforcement increased the shear strength although there was an upper limit on the effectiveness of shear reinforcement.
Author: Raymond Ian Gilbert Publisher: CRC Press ISBN: 1315389517 Category : Technology & Engineering Languages : en Pages : 700
Book Description
The design of structures in general, and prestressed concrete structures in particular, requires considerably more information than is contained in building codes. A sound understanding of structural behaviour at all stages of loading is essential. This textbook presents a detailed description and explanation of the behaviour of prestressed concrete members and structures both at service loads and at ultimate loads and, in doing so, provide a comprehensive and up-to-date guide to structural design. Much of the text is based on first principles and relies only on the principles of mechanics and the properties of concrete and steel, with numerous worked examples. However, where the design requirements are code specific, this book refers to the provisions of Eurocode 2: Design of Concrete Structures and, where possible, the notation is the same as in Eurocode 2. A parallel volume is written to the Australian Standard for Concrete Structures AS3600-2009. The text runs from an introduction to the fundamentals to in-depth treatments of more advanced topics in modern prestressed concrete structures. It suits senior undergraduate and graduate students and also practising engineers who want comprehensive introduction to the design of prestressed concrete structures. It retains the clear and concise explanations and the easy-to-read style of the first edition, but the content has been extensively re-organised and considerably expanded and updated. New chapters cover design procedures, actions and loads; prestressing systems and construction requirements; connections and detailing; and design concepts for prestressed concrete bridges. The topic of serviceability is developed extensively throughout. All the authors have been researching and teaching the behaviour and design of prestressed concrete structures for over thirty-five years and the proposed new edition of the book reflects this wealth of experience. The work has also gained much from Professor Gilbert active and long-time involvement in the development of standards for concrete buildings and concrete bridges.
Author: Edward G. Nawy Publisher: ISBN: Category : Technology & Engineering Languages : en Pages : 968
Book Description
Of Step-by-Step Trial-and-Adjustment Procedure for the Service-Load Design of Prestressed Members -- Design of Composite Post-Tensioned Prestressed Simply Supported Section -- Ultimate-Strength Flexural Design -- Load and Strength Factors -- ACI Load Factors and Safety Margins -- Limit State in Flexure at Ultimate Load in Bonded Members: Decompression to Ultimate Load -- Preliminary Ultimate-Load Design -- Summary Step-by-Step Procedure for Limit at Failure Design of the Prestressed Members -- Ultimate Strength Design of Prestressed Simply Supported Beam by Strain Compatibility -- Strength Design of Bonded Prestressed Simply Supported Beam Using Approximate Procedures -- SI Flexural Design Expression -- Shear and Torsional Strength Design -- Behavior of Homogeneous Beams in Shear -- Behavior of Concrete Beams as Nonhomogeneous Sections -- Concrete Beams without Diagonal Tension Reinforcement -- Shear and Principal Stresses in Prestressed Beams -- Web-Shear Reinforcement -- Horizontal Shear Strength in Composite Construction -- Web Reinforcement Design Procedure for Shear -- Principal Tensile Stresses in Flanged Sections and Design of Dowel-Action Vertical Steel in Composite Sections -- Dowel Steel Design for Composite Action -- Dowel Reinforcement Design for Composite Action in an Inverted T-Beam -- Shear Strength and Web-Shear Steel Design in a Prestressed Beam -- Web-Shear Steel Design by Detailed Procedures -- Design of Web Reinforcement for a PCI Standard Double Composite T-Beam -- Brackets and Corbels.
Author: M. A. Mansur Publisher: CRC Press ISBN: 9780849374357 Category : Technology & Engineering Languages : en Pages : 240
Book Description
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
Author: National Cooperative Highway Research Program
Author: FIB – International Federation for Structural Concrete
Author: M.K. Hurst
Author: J. C. Walraven
Author: James R. Libby
Author: Eisuke Nakamura
Author: Raymond Ian Gilbert
Author: Arghadeep Laskar
Author: Edward G. Nawy
Author: M. A. Mansur