Author: Sujata Roy Publisher: ISBN: Category : Languages : en Pages : 188
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: Publisher: ISBN: Category : Concrete bridges Languages : en Pages : 23
Book Description
Despite its long history, the finite element method continues to be the predominant strategy employed by engineers to conduct structural analysis. A reliable method is needed for analyzing structures made of reinforced concrete, a complex but common ingredient in many bridges in Virginia. As an effective alternative to extensive experimentation, this study was implemented to evaluate the plausibility of finite element analysis of reinforced-concrete bridge decks. Analytical evaluations were performed with the commercial, general-purpose finite element code ABAQUS, which can effectively depict the nonlinear behavior of concrete. It also has the unique capability of describing the behavior of reinforcing bars independently of the concrete material. Three-dimensional finite element models were developed to determine the overall structural response of several reinforced-concrete systems. Biaxial strain distribution through the element thickness, longitudinal normal girder strains, and displacements were predicted with reasonable accuracy. The accuracy of the model was verified with hand calculations or response data acquired from laboratory testing.
Author: Ehab Ellobody Publisher: Elsevier ISBN: 044318996X Category : Technology & Engineering Languages : en Pages : 722
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: Ehab Ellobody Publisher: Butterworth-Heinemann ISBN: 0124173039 Category : Technology & Engineering Languages : en Pages : 683
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: Farzad Hejazi Publisher: CRC Press ISBN: 1000479005 Category : Science Languages : en Pages : 323
Book Description
This book aims to present specific complicated and puzzling challenges encountered for application of the Finite Element Method (FEM) in solving Structural Engineering problems by using ABAQUS software, which can fully utilize this method in complex simulation and analysis. Therefore, an attempt has been to demonstrate the all process for modeling and analysis of impenetrable problems through simplified step by step illustrations with presenting screenshots from software in each part and also showing graphs. Farzad Hejazi is the Associate Professor in the Department of Civil Engineering, Faculty of Engineering, University Putra Malaysia (UPM), and a Senior Visiting Academic at the University of Sheffield, UK. Hojjat Mohammadi Esfahani,an expert on Finite Element Simulation,has more than 10 years of experience in the teaching and training of Finite Element packages, such as ABAQUS.
Author: Publisher: ISBN: 9780921303145 Category : Languages : en Pages : 13
Book Description
An experimental and theoretical study was conducted to define and explain the general inelastic deformational behaviour of reinforced concrete voided slabs under symmetrical and unsymmetrical cases of loading up to failure. In the experimental phase of this work, six voided reinforced concrete slabs were tested. The varying parameters for these tested slabs were the void-depth ratio and the percentage of the longitudinal and the transverse reinforcement. In the theoretical phase of the study, a nonlinear finite element analysis was conducted for reinforced concrete voided slabs. In this analysis, a layered rectangular element was developed in order to account for the varied material properties within an element. Each layer may have different properties, corresponding to its state of stress or strain, its material, or its geometry. The theoretical phase of this study, was also undertaken to test the validity of orthotropic plate theory in analyzing voided reinforced concrete slabs, especially after cracking of concrete. The results of this experimental-theoretical study were combined with other available information to formulate some recommendations concerning the design, construction, analysis and economy of this type of bridge. For the covering abstract of the Conference see IRRD Abstract No. 807839.
Author: Sujata Roy
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Author: Ehab Ellobody
Author: Hayder A. Rasheed
Author: Ehab Ellobody
Author: Christopher Thomas Latham
Author: Vikas Huria
Author: Farzad Hejazi
Author: Hani H. Nassif
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