Nonlinear Finite Element Analysis of Reinforced Concrete Bridge Elements Retrofitted by Advanced Composites PDF Download

Author: Hayder A. Rasheed
Publisher:
ISBN:
Category : Concrete beams
Languages : en
Pages : 131

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Author: Xiaoshan Lin
Publisher: Woodhead Publishing
ISBN: 0128169001
Category : Architecture
Languages : en
Pages : 256

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Book Description
Nonlinear Finite Element Analysis of Composite and Reinforced Concrete Beams presents advanced methods and techniques for the analysis of composite and FRP reinforced concrete beams. The title introduces detailed numerical modeling methods and the modeling of the structural behavior of composite beams, including critical interfacial bond-slip behavior. It covers a new family of composite beam elements developed by the authors. Other sections cover nonlinear finite element analysis procedures and the numerical modeling techniques used in commercial finite element software that will be of particular interest to engineers and researchers executing numerical simulations. Gives advanced methods and techniques for the analysis of composite and fiber Reinforced Plastic (FRP) and reinforced concrete beams Presents new composite beam elements developed by the authors Introduces numerical techniques for the development of effective finite element models using commercial software Discusses the critical issues encountered in structural analysis Maintains a clear focus on advanced numerical modeling

Author: Kasidit Chansawat
Publisher:
ISBN:
Category : Concrete bridges
Languages : en
Pages : 504

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Book Description
The Horsetail Creek (HC) bridge is an example of an Oregon bridge that was classified as structurally deficient and was not designed to withstand earthquake (EQ) excitations. A fiber-reinforced polymer (FRP) rehabilitation was performed on the HC bridge to increase flexural and shear capacities for traffic loads. However, a seismic retrofit has not yet been accomplished for this bridge. Fully three-dimensional finite element (FE) models are developed to simulate and examine the structural behavior of both full-size reinforced concrete (RC) beams and the HC bridge using ANSYS. FE analyses are compared with tests of full-scale beams replicating the transverse beams of the HC bridge before and after FRP strengthening from linear and nonlinear ranges up to failure. The FE models can effectively predict the behavior of the beams, and analytical and experimental results correlate very well. For the FE analyses of the HC bridge, soil-structure interface modeling is incorporated to replicate the actual bridge boundary conditions. Truck loadings are applied to the FE model at different locations, as in the actual bridge test. A sensitivity study is performed by varying uncertain bridge parameters to develop an FE bridge model best representing the actual bridge conditions. The optimal FE model obtained from the sensitivity study can accurately predict the magnitudes and trends in the strains. After an optimal FE bridge model is established, a performance evaluation on the FRP strengthening of the HC bridge is conducted. Both unstrengthened and FRP-strengthened bridge models are subjected to two different types of loading; i.e., scaled gravity and scaled truck loads to failure. Comparisons of results show the improvement in structural performance due to FRP strengthening. A seismic risk-related investigation of the HC bridge is also carried out. Nonlinear time-history analyses are performed using EQ acceleration-time histories applied to the HC bridge model. The ground motions are appropriate to the Pacific Northwest site and scaled so that the response spectrum, within natural periods of interest, matches the 1996 AASHTO design response spectrum. Based on the analytical results, colunm confinement is recommended to increase ductility and reduce potential for substructure collapse in future seismic events.

Author: Ehab Ellobody
Publisher: Elsevier
ISBN: 044318996X
Category : Technology & Engineering
Languages : en
Pages : 722

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Book Description
This second edition of Finite Element Analysis and Design of Steel and Steel-Concrete Composite Bridges is brought fully up-to-date and provides structural engineers, academics, practitioners, and researchers with a detailed, robust, and comprehensive combined finite modeling and design approach. The book’s eight chapters begin with an overview of the various forms of modern steel and steel-concrete composite bridges, current design codes (American, British, and Eurocodes), nonlinear material behavior of the bridge components, and applied loads and stability of steel and steel-concrete composite bridges. This is followed by self-contained chapters concerning design examples of steel and steel-concrete composite bridge components as well as finite element modeling of the bridges and their components. The final chapter focuses on finite element analysis and the design of composite highway bridges with profiled steel sheeting. This volume will serve as a valuable reference source addressing the issues, problems, challenges, and questions on how to enhance the design of steel and steel-concrete composite bridges, including highway bridges with profiled steel sheeting, using finite element modeling techniques. Provides all necessary information to understand relevant terminologies and finite element modeling for steel and composite bridges Discusses new designs and materials used in highway and railway bridge Illustrates how to relate the design guidelines and finite element modeling based on internal forces and nominal stresses Explains what should be the consistent approach when developing nonlinear finite element analysis for steel and composite bridges Contains extensive case studies on combining finite element analysis with design for steel and steel-concrete composite bridges, including highway bridges with profiled steel sheeting

Author: Ermakova A.V.
Publisher: Издательство АСВ
ISBN: 5930938792
Category : Technology & Engineering
Languages : en
Pages : 114

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Book Description
The work presents the theoretical basis of Additional Finite Element Method (AFEM), which is a variant of the Finite Element Method (FEM) for analysis of reinforced concrete structures at limit state. AFEM adds to the traditional sequence of problem by FEM the units of the two well-known methods of the structural design: method of additional loads and limit state method. The problem is solved by introduction of ideal failure models and additional design diagrams formed from additional finite elements, where each AFE describes the limit state reached by the main element. The main relations defining the properties of AFEs as well as the examples of the use of Additional Finite Element Method for analysis of reinforced concrete structures at limit state are given in the work too.

Author: Ehab Ellobody
Publisher: Butterworth-Heinemann
ISBN: 0124173039
Category : Technology & Engineering
Languages : en
Pages : 683

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Book Description
In recent years, bridge engineers and researchers are increasingly turning to the finite element method for the design of Steel and Steel-Concrete Composite Bridges. However, the complexity of the method has made the transition slow. Based on twenty years of experience, Finite Element Analysis and Design of Steel and Steel-Concrete Composite Bridges provides structural engineers and researchers with detailed modeling techniques for creating robust design models. The book’s seven chapters begin with an overview of the various forms of modern steel and steel–concrete composite bridges as well as current design codes. This is followed by self-contained chapters concerning: nonlinear material behavior of the bridge components, applied loads and stability of steel and steel–concrete composite bridges, and design of steel and steel–concrete composite bridge components. Constitutive models for construction materials including material non-linearity and geometric non-linearity The mechanical approach including problem setup, strain energy, external energy and potential energy), mathematics behind the method Commonly available finite elements codes for the design of steel bridges Explains how the design information from Finite Element Analysis is incorporated into Building information models to obtain quantity information, cost analysis

Author: Vikas Huria
Publisher:
ISBN:
Category :
Languages : en
Pages : 312

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Author: fib Fédération internationale du béton
Publisher: fib Fédération internationale du béton
ISBN: 2883940851
Category : Technology & Engineering
Languages : en
Pages : 3

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Book Description
Non-linear computer analysis methods have seen remarkable advancement in the last half-century. The state-of-the-art in non-linear finite element analysis of reinforced concrete has progressed to the point where such procedures are close to being practical, every-day tools for design office engineers. Non-linear computer analysis procedures can be used to provide reliable assessments of the strength and integrity of damaged or deteriorated structures, or of structures built to previous codes, standards or practices deemed to be deficient today. They can serve as valuable tools in assessing the expected behaviour from retrofitted structures, or in investigating and rationally selecting amongst various repair alternatives. fib Bulletin 45 provides an overview of current concepts and techniques relating to computer-based finite element modelling of structural concrete. It summarises the basic knowledge required for use of nonlinear analysis methods as applied to practical design, construction and maintenance of concrete structures, and attempts to provide a diverse and balanced portrayal of the current technical knowledge, recognizing that there are often competing and conflicting viewpoints. This report does not give advice on picking one model over another but, rather, provides guidance to designers on how to use existing and future models as tools in design practice, in benchmarking of their models against established and reliable test data and in selecting an appropriate safety factor as well as recognising various pitfalls. fib Bulletin 45 is intended for practicing engineers, and therefore focuses more on practical application and less on the subtleties of constitutive modelling.

Author: Sujata Roy
Publisher:
ISBN:
Category :
Languages : en
Pages : 188

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Book Description
A bridge approach slab serves as a structural slab to bridge any void that is created by any differential settlement between the bridge structure and the approach embankment. It provides a gradual transition from the pavement into the bridge. The primary causes of approach slab failures are undermining, settlement and cracking. Undermining and settlement of the slab can be treated by either mud jacking or by pumping grout material to fill the voids beneath the slab. Transverse and longitudinal cracking leads to distress of the slab and reduces its life expectancy. Repair and rehabilitation of the system is a heavy financial burden on the state department of transportation. This dissertation aims in mitigating the causes of cracking and also location of cracks by doing a finite element analysis of the slab. The factors affecting the cracks has also been studied. This study helps prove the utility of finite element analysis for reinforced concrete structures.

Author: Brahim Benmokrane
Publisher: Springer Nature
ISBN: 3031096320
Category : Technology & Engineering
Languages : en
Pages : 485

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Book Description
This book comprises the proceedings of the 8th International Conference on Advanced Composite Materials in Bridges and Structures (ACMBS) 2021. The contents of this volume focus on recent technological advances in the field of material behavior, seismic performance, fire resistance, structural health monitoring, sustainability, rehabilitation of structures, etc. The contents cover latest advances especially in applications in reinforced concrete, wood, masonry and steel structures, field application, bond development and splice length of FRB bars, structural shapes and fully composite bars, etc. This volume will prove a valuable resource for those in academia and industry.