Simplified LRFD Bridge Design

2013-04-08 Technology & Engineering

Author : Jai B. Kim
Release : 2013-04-08
Genre : Technology & Engineering
Kind : eBook
Book Rating : 515/5 ( reviews)

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Book Synopsis Simplified LRFD Bridge Design by : Jai B. Kim

Download or read book Simplified LRFD Bridge Design written by Jai B. Kim. This book was released on 2013-04-08. Available in PDF, EPUB and Kindle. Book excerpt: Developed to comply with the fifth edition of the AASHTO LFRD Bridge Design Specifications [2010]––Simplified LRFD Bridge Design is "How To" use the Specifications book. Most engineering books utilize traditional deductive practices, beginning with in-depth theories and progressing to the application of theories. The inductive method in the book uses alternative approaches, literally teaching backwards. The book introduces topics by presenting specific design examples. Theories can be understood by students because they appear in the text only after specific design examples are presented, establishing the need to know theories. The emphasis of the book is on step-by-step design procedures of highway bridges by the LRFD method, and "How to Use" the AASHTO Specifications to solve design problems. Some of the design examples and practice problems covered include: Load combinations and load factors Strength limit states for superstructure design Design Live Load HL- 93 Un-factored and Factored Design Loads Fatigue Limit State and fatigue life; Service Limit State Number of design lanes Multiple presence factor of live load Dynamic load allowance Distribution of Live Loads per Lane Wind Loads, Earthquake Loads Plastic moment capacity of composite steel-concrete beam LRFR Load Rating Simplified LRFD Bridge Design is a study guide for engineers preparing for the PE examination as well as a classroom text for civil engineering students and a reference for practicing engineers. Eight design examples and three practice problems describe and introduce the use of articles, tables, and figures from the AASHTO LFRD Bridge Design Specifications. Whenever articles, tables, and figures in examples appear throughout the text, AASHTO LRFD specification numbers are also cited, so that users can cross-reference the material.

Design of Highway Bridges

2006-11-28 Technology & Engineering

Author : Richard M. Barker
Release : 2006-11-28
Genre : Technology & Engineering
Kind : eBook
Book Rating : 589/5 ( reviews)

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Book Synopsis Design of Highway Bridges by : Richard M. Barker

Download or read book Design of Highway Bridges written by Richard M. Barker. This book was released on 2006-11-28. Available in PDF, EPUB and Kindle. Book excerpt: The up-to-date guide to applying theory and specifications to real-world highway bridge design Design of Highway Bridges, Second Edition offers detailed coverage of engineering basics for the design of short- and medium-span bridges. Based on the American Association of State Highway and Transportation Officials (AASHTO) LRFD Bridge Design Specifications, it is an excellent engineering resource. This updated edition features: * Expanded coverage of structural analysis, including axle and lane loads, along with new numerical analytic methods and approaches * Dozens of worked problems, primarily in Customary U.S. units, that allow techniques to be applied to real-world problems and design specifications * Revised AASHTO steel bridge design guidelines that reflect the simplified approach for plate girder bridges * The latest information on concrete bridges, including new minimum reinforcement requirements, and unbonded tendon stress at ultimate and losses for prestressed concrete girders * Information on key bridge types, selection principles, and aesthetic issues * Problems and selected references for further study * And more From gaining quick familiarity with the AASHTO LRFD specifications to seeking broader guidance on highway bridge design--this is the one-stop, ready reference that puts information at your fingertips.

Simplified Method to Develop Load and Resistance Factor Design Preliminary Design Charts for Prestressed Concrete Bridges

2015 Load factor design

Author : Jorge Márquez Balderrama
Release : 2015
Genre : Load factor design
Kind : eBook
Book Rating : /5 ( reviews)

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Book Synopsis Simplified Method to Develop Load and Resistance Factor Design Preliminary Design Charts for Prestressed Concrete Bridges by : Jorge Márquez Balderrama

Download or read book Simplified Method to Develop Load and Resistance Factor Design Preliminary Design Charts for Prestressed Concrete Bridges written by Jorge Márquez Balderrama. This book was released on 2015. Available in PDF, EPUB and Kindle. Book excerpt: The 2011 PCI Bridge Design Manual provides preliminary design charts for selecting the girder size and number of prestressing strands for a given span length and beam spacing but only for [small leter f with hook]ʹ[subscript c] = 8,000 psi (55.2 MPa). This single strength limits the use of the charts, particularly for states considering ultra-high performance concrete (UHPC). Accordingly this dissertation presents a simplified procedure to develop preliminary design charts for prestressed concrete bulb-tee girders considering service load stress limits, flexural strength and stresses at release. The results for a BT-72 beam are first compared with the 2003 PCI design charts originally developed based on the AASHTO Standard Specifications. The procedure is then adapted to the AASHTO LRFD Bridge Design Specifications and verified with the prevailing 2011 PCI design charts. Finally, new LRFD charts are generated for NSC, HPC, and UHPC with 0.5, 0.6, and 0.7-in. (13, 15 and 18 mm) strands for simple and two-span continuous bridges to illustrate the simplified procedure and potential impact of UHPC, larger strand size, and continuity on bridge girders. The new LRFD charts are shown to be accurate for the design assumptions made since an excellent agreement (within 2% and 4%) resulted between the preliminary design charts developed in this study and those given in the 2003 and 2011-PCI Bridge Design Manuals. The "transition point" is identified which provides the information needed for a designer to distinguish the zones between fully prestressed (uncracked), partially prestressed, and non-prestressed (cracked) members. The preliminary design charts demonstrate the effect of using UHPC and/or larger strand size and/or two-span continuous layouts. The effect of implementing continuity with the combination of UHPC and a larger strand diameter was shown to be much more significant than just increasing the concrete compressive strength or the strand diameter or using two-span continuous layouts. However, the use of longer full-span girders poses significant challenges for fabrication, transportation, erection, span-to-depth ratios, and live and dead load deflections of prestressed concrete bridges and, consequently, should be considered carefully for the final design of the bridge.

Highway Bridge Superstructure Engineering

2014-11-21 Technology & Engineering

Author : Narendra Taly
Release : 2014-11-21
Genre : Technology & Engineering
Kind : eBook
Book Rating : 182/5 ( reviews)

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Book Synopsis Highway Bridge Superstructure Engineering by : Narendra Taly

Download or read book Highway Bridge Superstructure Engineering written by Narendra Taly. This book was released on 2014-11-21. Available in PDF, EPUB and Kindle. Book excerpt: A How-To Guide for Bridge Engineers and Designers Highway Bridge Superstructure Engineering: LRFD Approaches to Design and Analysis provides a detailed discussion of traditional structural design perspectives, and serves as a state-of-the-art resource on the latest design and analysis of highway bridge superstructures. This book is applicable to highway bridges of all construction and material types, and is based on the load and resistance factor design (LRFD) philosophy. It discusses the theory of probability (with an explanation leading to the calibration process and reliability), and includes fully solved design examples of steel, reinforced and prestressed concrete bridge superstructures. It also contains step-by-step calculations for determining the distribution factors for several different types of bridge superstructures (which form the basis of load and resistance design specifications) and can be found in the AASHTO LRFD Bridge Design Specifications. Fully Realize the Basis and Significance of LRFD Specifications Divided into six chapters, this instructive text: Introduces bridge engineering as a discipline of structural design Describes numerous types of highway bridge superstructures systems Presents a detailed discussion of various types of loads that act on bridge superstructures and substructures Discusses the methods of analyses of highway bridge superstructures Includes a detailed discussion of reinforced and prestressed concrete bridges, and slab-steel girder bridges Highway Bridge Superstructure Engineering: LRFD Approaches to Design and Analysis can be used for teaching highway bridge design courses to undergraduate- and graduate-level classes, and as an excellent resource for practicing engineers.

LRFD Bridge Design

2022-02-23 Technology & Engineering

Author : Tim Huff
Release : 2022-02-23
Genre : Technology & Engineering
Kind : eBook
Book Rating : 374/5 ( reviews)

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Book Synopsis LRFD Bridge Design by : Tim Huff

Download or read book LRFD Bridge Design written by Tim Huff. This book was released on 2022-02-23. Available in PDF, EPUB and Kindle. Book excerpt: This book examines and explains material from the 9th edition of the AASHTO LRFD Bridge Design Specifications, including deck and parapet design, load calculations, limit states and load combinations, concrete and steel I-girder design, bearing design, and more. With increased focus on earthquake resiliency, two separate chapters– one on conventional seismic design and the other on seismic isolation applied to bridges– will fully address this vital topic. The primary focus is on steel and concrete I-girder bridges, with regard to both superstructure and substructure design. Features: Includes several worked examples for a project bridge as well as actual bridges designed by the author Examines seismic design concepts and design details for bridges Presents the latest material based on the 9th edition of the LRFD Bridge Design Specifications Covers fatigue, strength, service, and extreme event limit states Includes numerous solved problems and exercises at the end of each chapter to illustrate the concepts presented LRFD Bridge Design: Fundamentals and Applications will serve as a useful text for graduate and upper-level undergraduate civil engineering students as well as practicing structural engineers.

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