Analysis, Design, Rating, and Drafting of Wood Bridge Superstructures
Short summary:
In the design mode, minimal user input, such as span length, roadway width, bridge type, and materials are entered and the program reviews designs and issues details associated with standard plan sets ...
Long summary:
Analysis, Design, Rating, and Drafting of Wood Bridge Superstructures Analysis, Design, Rating, and Drafting of Wood Bridge Superstructures W. Randall Thomas and J. A. Puckett, P.E., Ph.D., Department of Civil and Architectural Engineering, University of Wyoming Abstract A program for engineering wood bridges is described. The program performs the analysis, design, and/or rating of wood bridge superstructures in accordance with the 15th Edition of the AASHTO Specification or the AASHTO-LRFD Specification. Bridges may be analyzed for design review and/or rating. In review/rating mode, the superstructure is analyzed and checked against all applicable specifications. In the design mode, minimal user input, such as span length, roadway width, bridge type, and materials are entered and the program reviews designs and issues details associated with standard plan sets. The appropriate design-specific information is included in a DXF format for inclusion into the final drawings. A Microsoft Windows-based user interface is used for the data definition. The data is passed to another module for engineering computations. The associated documentation is contained in both on-line and hard copy formats. The most commonly used bridge and deck systems are accommodated in either U.S. customary or SI units. Keywords: bridge design, wood bridge, bridge design software Introduction Computer programs have been used as an aid for bridge design for many years. Since the introduction of inexpensive personal computers, access to design programs has expanded greatly within all levels of the design community. In addition to general structural analysis programs, many design programs have been developed to assist with specific design applications involving both bridge superstructures and substructures. With few exceptions, these programs have been targeted at bridges constructed of steel and concrete. Very few computer design programs have included wood as a design material option. In order to facilitate the design of wood bridges, computerized design programs for wood bridge superstructures must be developed that are comparable to those currently available for steel and concrete bridges. Otherwise, designers may unjustifiably select steel or concrete on the basis of the design tools available. These programs are needed not only in the traditional allowable stress design format, but also in the newly-introduced load and resistance factor design format. This paper presents the development of Madero (Spanish for timber beam), a complete computer package for timber bridge superstructures. Program functionality and design are discussed, along 361 with graphical user interface features, analysis methods, and implementation examples. Project Objectives The main objective of the project is to develop a comprehensive computer program for the analysis, design, drafting, and rating of wood bridge superstructures. In developing this program, several intermediate objectives must be ...
Source: www.fs.fed.us
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