Download or read book Design of Reinforced Concrete Bridge Decks Under Moving Loads written by PC. Perdikaris and published by . This book was released on 1998 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents design recommendations of non-composite reinforced concrete bridge decks subjected to fatigue due to moving loads. These recommendations are based on test results of 1/3- and 1/6.6- scale physical models of a full-scale 21.6-cm (8.5 in.) thick and 15.24-m (50-ft) long simply supported non-composite reinforced concrete deck. Concrete bridge decks should be designed to transfer the load in a two-way action. Experimental results show that the two-way slab action in the decks changes to a one-way action (transverse direction) as fatigue damage due to a moving wheel-load accumulates. It is recommended to adopt an isotropic steel reinforcing pattern. An isotropic reinforcing pattern with a steel ratio of 0.3 % (each top and bottom layer) in each direction appears to be adequate. A similar reinforcing amount and pattern is required by the Ontario bridge design Code. The required steel content is therefore reduced resulting in substantial savings in the bridge deck construction costs and improving the corrosion resistance in decks, especially in the presence of deicing chemicals. It appears that flexural cracking in the deck and bond failure at the steel-concrete interface are necessary and sufficient conditions for deck failure under traffic loads. It is, thus, highly desirable to preclude or at least limit cracking and maximize the bond strength of the steel rebars.

Download or read book Effects of Product Quality and Design Criteria on Structural Integrity written by Richard C. Rice and published by ASTM International. This book was released on 1998 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains papers from a May 1997 symposium held in St. Louis, addressing different aspects of product quality as it relates to structural integrity, and the influence of design criteria on structural integrity. Topics include low-cycle fatigue testing of tubular material using non-standard specimens,

Download or read book Fatigue Strength and Stiffness of Reinforced Concrete Bridge Decks written by P. C. Perdikaris and published by . This book was released on 1993 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Small Scale Model Tests written by and published by . This book was released on 1990 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the major tasks of an on-going research project is to improve the current AASHTO design approach of reinforced concrete bridge deck slabs. Tests are conducted on non-composite reinforced concrete bridge deck models supported on steel girders to study the failure mechanisms under static, fixed pulsating and moving wheel-loads. This paper presents the test results of two 1/6.6 (B-series) bridge deck models of an 8.5 in. thick and 50 ft. long prototype concrete bridge deck supported on four simply supported steel girders spaced at 10 ft. and subjected to a static concentrated wheel-load. The effect of lateral restraint and amount of reinforcement (Ontario vs. AASHTO design) on the arching action mechanism and the load-deflection response of the bridge model decks is determined and discussed. Tests are also reported on 1/6.6 (B-series) and 1/3 scale (P-series) deck panels simply supported between two adjacent steel girders to evaluate any size effects on the static ultimate strength of the B-series deck models. In addition to the load-deflection curves, cracking pattern, failure mode and a comparison between the observed ultimate strength values and those predicted by the yield-line theory and ACI code are presented. Strains are measured in the reinforcing bars and on the concrete surface; membrane compressive forces in the decks have been estimated but are not included in this paper. For the covering abstract of the Conference see IRRD Abstract No. 807839.

Download or read book Evaluation of the Empirical Deck Design for Vehicular Bridges written by Georges El-Gharib and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This research evaluated the feasibility of the empirical design method for reinforced concrete bridge decks for the Florida Department of Transportation [FDOT]. There are currently three methods used for deck design: empirical method, traditional method and finite element method. This research investigated and compared the steel reinforcement ratios and the stress developed in the reinforcing steel for the three different methods of deck design. This study included analysis of 15 bridge models that met the FDOT standards. The main beams were designed and load rated using commercial software to obtain live load deflections. The bridges were checked to verify that they met the empirical method conditions based on the FDOT Structures Design Guidelines-- January 2009. The reinforced concrete decks were designed using the traditional design method. Then the bridges were analyzed using three-dimensional linear finite element models with moving live loads. The reinforced concrete decks were designed using dead load moment, live load moment, and future wearing surface moment obtained from the finite element models. The required reinforcing steel ratio obtained from the finite element method was compared to the required reinforcing steel ratio obtained from traditional design method and the empirical design method. Based on the type of beams, deck thicknesses, method of analysis, and other assumptions used in this study, in most cases the required reinforcing steel obtained from the finite element design is closer to that obtained from the empirical design method than that obtained from the traditional design method. It is recommended that the reinforcing steel ratio obtained from the empirical design method be used with increased deck thicknesses to control cracking in the bridge decks interior bays.

Download or read book Load Distribution in Concrete Bridge Decks written by Anthony Ralph Cusens and published by . This book was released on 1974 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Bridge Deck Utilizing Ontario Bridge Deck Design Method Instrumentation and testing of two reinforced concrete bridge decks written by J. A. Puckett and published by . This book was released on 1988 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design of Reinforcement free Bridge Decks with Wide Flange Prestressed Precast Girders written by Han Ug Bae and published by . This book was released on 2008 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Design of Prestressed Concrete Bridges written by Robert Benaim and published by CRC Press. This book was released on 2007-12-06 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examining the fundamental differences between design and analysis, Robert Benaim explores the close relationship between aesthetic and technical creativity and the importance of the intuitive, more imaginative qualities of design that every designer should employ when designing a structure. Aiding designers of concrete bridges in developing an intu

Download or read book ASTM Special Technical Publication written by and published by . This book was released on 1998 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Bridge Deck Utilizing Ontario Bridge Deck Design Method Review of experimental and analytical research in lightly reinforced bridge decks written by J. A. Puckett and published by . This book was released on 1988 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Concrete Bridge Design written by Roy Edward Rowe and published by Elsevier Science & Technology. This book was released on 1962 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Innovative Bridge Design Handbook written by Alessio Pipinato and published by Elsevier. This book was released on 2021-09-08 with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt: Innovative Bridge Design Handbook: Construction, Rehabilitation, and Maintenance, Second Edition, brings together the essentials of bridge engineering across design, assessment, research and construction. Written by an international group of experts, each chapter is divided into two parts: the first covers design issues, while the second presents current research into the innovative design approaches used across the world. This new edition includes new topics such as foot bridges, new materials in bridge engineering and soil-foundation structure interaction. All chapters have been updated to include the latest concepts in design, construction, and maintenance to reduce project cost, increase structural safety, and maximize durability. Code and standard references have been updated. Completely revised and updated with the latest in bridge engineering and design Provides detailed design procedures for specific bridges with solved examples Presents structural analysis including numerical methods (FEM), dynamics, risk and reliability, and innovative structural typologies

Download or read book Structural Modeling and Experimental Techniques Second Edition written by Harry G. Harris and published by CRC Press. This book was released on 1999-03-30 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural Modeling and Experimental Techniques presents a current treatment of structural modeling for applications in design, research, education, and product development. Providing numerous case studies throughout, the book emphasizes modeling the behavior of reinforced and prestressed concrete and masonry structures. Structural Modeling and Experimental Techniques: Concentrates on the modeling of the true inelastic behavior of structures Provides case histories detailing applications of the modeling techniques to real structures Discusses the historical background of model analysis and similitude principles governing the design, testing, and interpretation of models Evaluates the limitations and benefits of elastic models Analyzes materials for reinforced concrete masonry and steel models Assesses the critical nature of scale effects of model testing Describes selected laboratory techniques and loading methods Contains material on errors as well as the accuracy and reliability of physical modeling Examines dynamic similitude and modeling techniques for studying dynamic loading of structures Covers actual applications of structural modeling This book serves students in model analysis and experimental methods, professionals manufacturing and testing structural models, as well as professionals testing large or full-scale structures - since the instrumentation techniques and overall approaches for testing large structures are very similar to those used in small-scale modeling work.

Download or read book Reinforced Concrete Bridges written by William Leslie Scott and published by . This book was released on 1928 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Behavior of Concrete Bridge Decks Under Combined Shrinkage Thermal and Live Loading written by Anuoluwa Adediji and published by . This book was released on 2016 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Designers have consistently been concerned with long term deformation of bridges to mitigate unfavorable effects such as excessive movement and cracking. Furthermore, any developed tool of use to a designer must make use of parameters known at the time of design as well as be simplistic in nature as defined in the code. As such, many prediction models for the free shrinkage of a concrete specimen have been developed toward this end. However, structures designed and placed in the field experience shrinkage under restraint. Also, the differences in environmental conditions affect the shrinkage of structures. It is important to understand the restrained shrinkage of structures under field conditions and use this understanding to make improved guidelines on shrinkage from a design standpoint. In this study, the prediction and modelling of the free shrinkage of small samples under constant conditions were expanded to the prediction and modelling of restrained shrinkage under field conditions of large samples using finite element analysis. A parametric analysis was then performed to derive useful information from a design perspective such as the impact of various design parameters on the performance of a bridge deck. The findings indicated that the use of reinforcement is the preferable method of addressing shrinkage in bridge decks. Furthermore, the efficacy of the amount of reinforcement specified in the AASHTO guidelines to mitigate excessive cracking in bridge decks was discussed. The traditional and empirical methods of bridge deck design were investigated for shrinkage reinforcement. Finally, recommendations were suggested to the reinforcement requirements based on the findings of this study.

Download or read book Concrete Bridge Designer s Manual written by E. Pennells and published by CRC Press. This book was released on 2003-09-02 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives bridge engineers clear guidance on design and includes 88 data sheets of design information, charts and check lists.