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Effect Of Abutment Skew And Horizontally Curved Alignment On Bridge Reaction Forces
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Book Synopsis Effect of Abutment Skew and Horizontally Curved Alignment on Bridge Reaction Forces by : Lucas Richard Miner
Download or read book Effect of Abutment Skew and Horizontally Curved Alignment on Bridge Reaction Forces written by Lucas Richard Miner and published by . This book was released on 2014 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents analysis results from a parametric study investigating the effects of abutment skew and horizontal alignment curvature on bridge reaction forces. Over 800 single-span box girder bridges were modeled using three-dimensional finite element analysis software. The effects of skew angle, curve angle, and a coupled skew-curve effect on abutment reactions in the obtuse corners of single-span box girder bridges were found to be significant. These results are compared with state-of-the-art bridge design practice and LRFD Specification procedures that provide guidance on designing bridges with skew and horizontal curvature. Interestingly, the results demonstrate that the obtuse corner reaction forces are greatly influence by the bridge aspect ratio across a wide variety of skew and curve angles. Furthermore, the horizontal alignment curvature has a large effect, even at very small alignment central angles. Moreover, the effect of skew angle is shown to be partially dependent on bridge curvature; although this coupling of the skew and curve effects is minimal at small skew angles. The bearing stiffness was also varied, which had a large effect on the reactions of skewed and curved bridges. Empirical equations for skew and curve correction are proposed and additional research recommended in the summary chapter.
Book Synopsis Behavior and Analysis of a Horizontally Curved and Skewed I-girder Bridge by : Cagri Ozgur
Download or read book Behavior and Analysis of a Horizontally Curved and Skewed I-girder Bridge written by Cagri Ozgur and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis investigates the strength behavior of a representative highly skewed and horizontally curved bridge as well as analysis and design procedures for these types of structures. The bridge responses at and above a number of limits in the AASHTO (2007) Specifications are considered. The study includes the evaluation of various attributes of the elastic analysis of the subject bridge. These attributes include: (1) the accuracy of 3-D grid versus 3-D FEA models, (2) first-order versus second-order effects during the construction, (3) the ability to predict layover at bearing lines using simplified equations and (4) the benefit of combining the maximum and concurrent major-axis and flange lateral bending values due to live load compared to combining the maximums due to different live loads when checking the section resistances. The study also addresses the ability of different AASHTO 2007 resistance equations to capture the ultimate strength behavior. This is accomplished by comparing the results from full nonlinear 3-D FEA studies to the elastic design and analysis results. Specifically the use of the 2007 AASHTO moment based one-third rule equations is evaluated for composite sections in positive bending.
Book Synopsis Recent Advances in Structural Engineering, Volume 1 by : A. Rama Mohan Rao
Download or read book Recent Advances in Structural Engineering, Volume 1 written by A. Rama Mohan Rao and published by Springer. This book was released on 2018-08-01 with total page 1137 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a collection of select papers presented at the Tenth Structural Engineering Convention 2016 (SEC-2016). It comprises plenary, invited, and contributory papers covering numerous applications from a wide spectrum of areas related to structural engineering. It presents contributions by academics, researchers, and practicing structural engineers addressing analysis and design of concrete and steel structures, computational structural mechanics, new building materials for sustainable construction, mitigation of structures against natural hazards, structural health monitoring, wind and earthquake engineering, vibration control and smart structures, condition assessment and performance evaluation, repair, rehabilitation and retrofit of structures. Also covering advances in construction techniques/ practices, behavior of structures under blast/impact loading, fatigue and fracture, composite materials and structures, and structures for non-conventional energy (wind and solar), it will serve as a valuable resource for researchers, students and practicing engineers alike.
Book Synopsis Sensitivity of Response of Skewed Bridges to Their Span Length, Number of Bents and Abutment Modeling by : Shayan Sheikhakbari
Download or read book Sensitivity of Response of Skewed Bridges to Their Span Length, Number of Bents and Abutment Modeling written by Shayan Sheikhakbari and published by . This book was released on 2016 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sensitivity of the seismic performance of two typical bridges to the modeling variation of their abutment parameters is investigated and compared through a comparison parameter proposed in this study. One of the bridges is a two-span two-column-bent bridge with seat-type skew abutment and the other is a three-span three-column-bent bridge with seat-type skew abutment. A set of 40 pulse-like ground motions is applied to the bridges for nonlinear time-history analysis.In the transverse direction, two force-deformation models, which are based on strut-and-tie and sliding shear friction mechanisms, are used. The analytical models are based on the extensive experimental research previously conducted.A hyperbolic force-deformation model (General Hyperbolic Force Deformation) is used to represent the passive lateral resistance of the abutment backfill. For considering the possible variation in the backfill geotechnical property, three typical abutment backfill is chosen from the exciting data that was collected from multiple highway bridges in California. Two alternative methods are used to account for the effect of the abutment skew angle on the backfill reaction. The methods include an empirical relationship derived from experimental data, and an analytical method developed based on assumed log-spiral soil failure mechanism.A comparison parameter is proposed in this study, which is a representative of ductility demand of a skewed bridge to the same non-skewed bridge. For each case, the parameter is computed using the data derived from the nonlinear time-history analysis to investigate the seismic performance of bridges and compare the ductility demand of the specimen bridges.The outcome of this research reveals the significance of shear keys and abutment backfill on the global response of bridges. The sensitivity of the comparison parameter to the specimen bridges' geometry is also discussed in detail in this study.
Book Synopsis Influence of Bracing Systems on the Behavior of Curved and Skewed Steel I-girder Bridges During Construction by : Telmo Andres Sanchez
Download or read book Influence of Bracing Systems on the Behavior of Curved and Skewed Steel I-girder Bridges During Construction written by Telmo Andres Sanchez and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The construction of horizontally curved bridges with skewed supports requires careful consideration. These types of bridges exhibit three-dimensional response characteristics that are not commonly seen in straight bridges with normal supports. As a result, engineers may face difficulties during the construction, when the components of the bridge do not fit together or the final geometry of the structure does not correspond to that intended by the designer. These complications can lead to problems that compromise the serviceability aspects of the bridge and in some cases, its structural integrity. : The three dimensional response that curved and skewed bridges exhibit is directly influenced by the bracing system used to configure the structure. In I-girder bridges, cross-frames are provided to integrate the structure, transforming the individual girders into a structural system that can support larger loads than when the girders work separately. In general, they facilitate the construction of the structure. However, they can also induce undesired collateral effects that can be a detriment to the performance of the system. These effects must be considered in the design of a curved and skewed bridge because, in some cases, they can modify substantially its response.
Book Synopsis Steel Bridge Group by : Steel Construction Institute
Download or read book Steel Bridge Group written by Steel Construction Institute and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transportation Research Record written by and published by . This book was released on 1998 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Engineering for Structural Stability in Bridge Construction by : Federal Highway Federal Highway Administration
Download or read book Engineering for Structural Stability in Bridge Construction written by Federal Highway Federal Highway Administration and published by . This book was released on 2020-07-19 with total page 669 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual is intended to serve as a reference. It will provide technical information which will enable Manual users to perform the following activities:Describe typical erection practices for girder bridge superstructures and recognize critical construction stagesDiscuss typical practices for evaluating structural stability of girder bridge superstructures during early stages of erection and throughout bridge constructionExplain the basic concepts of stability and why it is important in bridge erection* Explain common techniques for performing advanced stability analysis along with their advantages and limitationsDescribe how differing construction sequences effect superstructure stabilityBe able to select appropriate loads, load combinations, and load factors for use in analyzing superstructure components during constructionBe able to analyze bridge members at various stages of erection* Develop erection plans that are safe and economical, and know what information is required and should be a part of those plansDescribe the differences between local, member and global (system) stability
Download or read book Bridge Engineering written by Weiwei Lin and published by Butterworth-Heinemann. This book was released on 2017-05-11 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridge Engineering: Classifications, Design Loading, and Analysis Methods begins with a clear and concise exposition of theory and practice of bridge engineering, design and planning, materials and construction, loads and load distribution, and deck systems. This is followed by chapters concerning applications for bridges, such as: Reinforced and Prestressed Concrete Bridges, Steel Bridges, Truss Bridges, Arch Bridges, Cable Stayed Bridges, Suspension Bridges, Bridge Piers, and Bridge Substructures. In addition, the book addresses issues commonly found in inspection, monitoring, repair, strengthening, and replacement of bridge structures. - Includes easy to understand explanations for bridge classifications, design loading, analysis methods, and construction - Provides an overview of international codes and standards - Covers structural features of different types of bridges, including beam bridges, arch bridges, truss bridges, suspension bridges, and cable-stayed bridges - Features step-by-step explanations of commonly used structural calculations along with worked out examples
Author :American Association of State Highway and Transportation Officials Publisher :AASHTO ISBN 13 :1560514698 Total Pages :38 pages Book Rating :4.5/5 (65 download)
Book Synopsis LRFD Guide Specifications for the Design of Pedestrian Bridges by : American Association of State Highway and Transportation Officials
Download or read book LRFD Guide Specifications for the Design of Pedestrian Bridges written by American Association of State Highway and Transportation Officials and published by AASHTO. This book was released on 2009 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Standard Specifications for Highway and Structure Construction by : Wisconsin. Department of Transportation
Download or read book Standard Specifications for Highway and Structure Construction written by Wisconsin. Department of Transportation and published by . This book was released on 1997 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Concrete Box-girder Bridges by : Jörg Schlaich
Download or read book Concrete Box-girder Bridges written by Jörg Schlaich and published by IABSE. This book was released on 1982 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bridge Launching by : Marco Rosignoli
Download or read book Bridge Launching written by Marco Rosignoli and published by Thomas Telford. This book was released on 2002 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: &Quot;This book is an essential purchase for all those involved in bridge construction and innovative building techniques, such as bridge owners, design offices, bridge consultants, and construction equipment suppliers."--BOOK JACKET.
Book Synopsis Seismic Design and Retrofit of Bridges by : M. J. N. Priestley
Download or read book Seismic Design and Retrofit of Bridges written by M. J. N. Priestley and published by John Wiley & Sons. This book was released on 1996-04-12 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of their structural simplicity, bridges tend to beparticularly vulnerable to damage and even collapse when subjectedto earthquakes or other forms of seismic activity. Recentearthquakes, such as the ones in Kobe, Japan, and Oakland,California, have led to a heightened awareness of seismic risk andhave revolutionized bridge design and retrofit philosophies. In Seismic Design and Retrofit of Bridges, three of the world's topauthorities on the subject have collaborated to produce the mostexhaustive reference on seismic bridge design currently available.Following a detailed examination of the seismic effects of actualearthquakes on local area bridges, the authors demonstrate designstrategies that will make these and similar structures optimallyresistant to the damaging effects of future seismicdisturbances. Relying heavily on worldwide research associated with recentquakes, Seismic Design and Retrofit of Bridges begins with anin-depth treatment of seismic design philosophy as it applies tobridges. The authors then describe the various geotechnicalconsiderations specific to bridge design, such as soil-structureinteraction and traveling wave effects. Subsequent chapters coverconceptual and actual design of various bridge superstructures, andmodeling and analysis of these structures. As the basis for their design strategies, the authors' focus is onthe widely accepted capacity design approach, in which particularlyvulnerable locations of potentially inelastic flexural deformationare identified and strengthened to accommodate a greater degree ofstress. The text illustrates how accurate application of thecapacity design philosophy to the design of new bridges results instructures that can be expected to survive most earthquakes withonly minor, repairable damage. Because the majority of today's bridges were built before thecapacity design approach was understood, the authors also devoteseveral chapters to the seismic assessment of existing bridges,with the aim of designing and implementing retrofit measures toprotect them against the damaging effects of future earthquakes.These retrofitting techniques, though not considered appropriate inthe design of new bridges, are given considerable emphasis, sincethey currently offer the best solution for the preservation ofthese vital and often historically valued thoroughfares. Practical and applications-oriented, Seismic Design and Retrofit ofBridges is enhanced with over 300 photos and line drawings toillustrate key concepts and detailed design procedures. As the onlytext currently available on the vital topic of seismic bridgedesign, it provides an indispensable reference for civil,structural, and geotechnical engineers, as well as students inrelated engineering courses. A state-of-the-art text on earthquake-proof design and retrofit ofbridges Seismic Design and Retrofit of Bridges fills the urgent need for acomprehensive and up-to-date text on seismic-ally resistant bridgedesign. The authors, all recognized leaders in the field,systematically cover all aspects of bridge design related toseismic resistance for both new and existing bridges. * A complete overview of current design philosophy for bridges,with related seismic and geotechnical considerations * Coverage of conceptual design constraints and their relationshipto current design alternatives * Modeling and analysis of bridge structures * An exhaustive look at common building materials and theirresponse to seismic activity * A hands-on approach to the capacity design process * Use of isolation and dissipation devices in bridge design * Important coverage of seismic assessment and retrofit design ofexisting bridges
Book Synopsis Design and Construction of Bridge Approaches by : Harvey E. Wahls
Download or read book Design and Construction of Bridge Approaches written by Harvey E. Wahls and published by Transportation Research Board. This book was released on 1990 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes case histories of the Dumbarton Bridge (San Francisco Bay, Calif.), the Rainier Avenue Embankment (Seattle, Wash.) and the Gallows Road Grade Separation (Fairfax, Va.)
Book Synopsis High-load Multi-rotational Bridge Bearings by : John F. Stanton
Download or read book High-load Multi-rotational Bridge Bearings written by John F. Stanton and published by Transportation Research Board. This book was released on 1999 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bridge Deck Analysis by : Eugene J. Obrien
Download or read book Bridge Deck Analysis written by Eugene J. Obrien and published by CRC Press. This book was released on 2014-10-06 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Captures Current Developments in Bridge Design and MaintenanceRecent research in bridge design and maintenance has focused on the serviceability problems of older bridges with aging joints. The favored solution of integral construction and design has produced bridges with fewer joints and bearings that require less maintenance and deliver increased
