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Computational Analysis and Design of Bridge Structures by Chung C. Fu and Shuqing Wang
Book Details :
LanguageEnglish
Pages616
FormatPDF
Size14.8 MB



Computational Analysis and Design of Bridge Structures by Chung C. Fu and Shuqing Wang



PREFACE:

Bridges consist of super- and substructures. Superstructures, often called bridge deck structures, are traditionally analyzed by the deck itself for load-distribution behavior. With the invention of computers and the creation of bridge-related software, the approximation can be minimized and tedious processes can be streamlined.

It is now possible to change the structural parameters, even structural types, during the design process, because the computer program can now recalculate stresses, deflections, and internal forces in seconds.

Through the advances in computer graphic capabilities, meshing in the preprocess and contour displaying on the fly in the postprocess are the norms of almost all bridge analysis and design computer programs. With today’s power of both hardware and software, more sophisticated three-dimensional (3D) finite element models have been used in the design of many major structures, in part or all.

Based on current availability and future potential, high-performance computer hardware and advanced software technologies can even provide an unprecedented opportunity to develop a new generation of integrated analysis and design systems with roads and bridges to benefit not only new bridge design but also routine load rating and maintenance of existing bridges, which will be discussed more in Chapters 1 and 18.

However, no matter where the computer technology leads, a bridge engineer needs fundamental knowledge of bridge behavior under the combinations of different types of loads during various construction stages. This book serves the role of transferring the fundamental knowledge of bridges to a novel approach of all major bridge types.


Several computer programs were used to analyze the illustrated bridge examples throughout this book. We intend to show the principle rather than the capability of each program, so limited details on the data input and the code specifications are provided.

The distinctive features are the presentation of a wide range of bridge structural types that are yet fairly code-independent. With this intent, this book is aimed toward students, especially at the master of science (MSc) level, and practicing professionals at bridge design offices and bridge design authorities worldwide. This book is divided into three parts:

Part I covers the general aspects of bridges, Part II covers bridge behavior and modeling of all types of bridges, and Part III covers special topics of bridges. In Part I, Chapter 1 provides an introduction and Chapter 2 covers the methods of computational analysis and design suitable for bridge structures. These methods vary from approximate to refined analyses depending on the size, complexity, and importance of the bridge.

With rapidly improving computer technology, the more refined and complex methods of analyses are becoming more and more commonplace. Chapter 3 provides the background and approaches of numerical methods specifically for bridges.

The scope of Part II is to provide information on the methods of analysis and the modeling technique suitable for the design and evaluation of various types of bridges. Chapters include illustrated examples of bridges all over the world, especially in the United States and People’s Republic of China. We started from deck-type, especially beam-type, bridges. Chapters 4 through 6 discuss concrete bridges.


Chapters 7 and 8 examine steel bridges. The remaining four chapters, 9 through 12, discuss arch bridges, truss bridges, cable-stayed bridges, and suspension bridges, respectively, of which, except for truss bridges, which are mostly built in steel, the other three bridge types can be built in either concrete or steel.

In Part III, for the purpose of analysis, several special topics, such as strut-and-tie modeling (Chapter 13), stability analysis (Chapter 14), redundancy analysis (Chapter 15), integral bridges (Chapter 16), dynamic/ earthquake analysis (Chapter 17), and bridge geometry (Chapter 18), are covered to complete the book. In this part, models may include super- and substructures.

Some may even need the 3D finite element method of nonlinear analysis. The major issues of recent developments in bridge technology are also discussed in those chapters. The focus is mainly on highway bridges, although some information is also provided for railway bridges.

Overall, this book demonstrates how bridge structures can be analyzed using relatively simple or more sophisticated mathematical models with the physical meanings behind the modeling, so that engineers can gain confidence with their modeling techniques, even for a complicated bridge structure.


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