Download or read book Analytical Modeling of Longitudinal Glued Laminated Timber Deck Bridges written by Aida Talal Bisat and published by . This book was released on 1996 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Live Load Distribution on Longitudinal Glued laminated Timber Deck Bridges written by and published by . This book was released on 2010 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past few years the United States Department of Agriculture (USDA), Forest Products Laboratory (FPL), and the Federal Highway Administration (FHWA) have supported several research programs. This paper is a result of a study sponsored by FPL, with the objective of determining how truckloads are distributed to the deck panels of a longitudinal glued-laminated timber deck bridge. Currently, the American Association of State Highway and Transportation Officials (AASHTO) LRFD (load and resistance factor design) Bridge Design Specification provides live load distribution provisions for longitudinal glued-laminated timber deck-panel bridges. The AASHTO LRFD live load distribution provisions for longitudinal glued-laminated timber deck bridges were based on the assumption that the bridge deck behaves as one slab and ignores the discontinuity of the bridge deck panels. This study investigated this assumption by using analytical models that validated field test data from several in-service bridges and data from a full-scale laboratory test bridge. The analytical models accounted for the effects of the interface between the deck panels as well as the effects of the transverse stiffener beams on the distribution of the live- load. The analytical live load distribution results above were compared with both the AASHTO LRFD and AASHTO Standard Specifications.
Download or read book Load Distribution in Glued Laminated Longitudinal Timber Deck Highway Bridges written by Wallace Wolfred Sanders and published by . This book was released on 1985 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Finite Element Analysis of Longitudinal Glulam Timber Deck and Glulam Timber Girder Bridges written by Anil Varughese Kurian and published by . This book was released on 2001 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents finite element models of longitudinal glulam timber deck and glulam timber girder bridges. Programs were developed using the ANSYS Parametric Design Language (APDL) that is available in ANSYS finite element commercial software, to be used as analytical tools in the assessment of these timber bridges. Six case studies were undertaken to validate the models developed and corroborate the results, obtained using the programs, with experimental observations.
Download or read book Analytical Modeling and Preprocessor Development of Stress laminated Timber Deck Bridges written by Satish Hansmukhlal Jain and published by . This book was released on 2000 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents modeling technique and computer programs for analysis of stress-laminated timber deck bridges, both right-angled and skewed bridges, using finite element modeling. The programs were developed to be used as an analytical tool for the assessment of stress-laminated timber deck bridges. A sensitivity analysis was also carried out to determine a reasonable element size and aspect ratio to model the deck elements. These programs were written in ANSYS Parametric Design Language that is available in ANSYS finite element analysis commercial software. The programs require limited input like bridge dimensions, material properties, load, and load positions for analyzing the bridge. The output file contains deflection and stress results at desired cross-sections of the bridge. This output can be imported into the Excel software to represent the results in a graphical manner. Four bridges with available experimental data were and analyzed to calibrate finite element results.
Download or read book Analysis of Thermal Change in Stress laminated Timber Bridge Decks written by James A. Kainz and published by . This book was released on 2001 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Behavior of Stress laminated Parallel chord Timber Bridge Decks written by A. G. Dimakis and published by . This book was released on 1992 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental and Analytical Load Distribution Behavior of Glued Laminated Timber Deck Bridges written by Terry J. Wipf and published by . This book was released on 1986 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Live Load Distribution on Longitudinal Glued laminated Timber Girder Bridges written by and published by . This book was released on 2011 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increased use of timber bridges in the U.S. transportation system has required additional research to improve the current design methodology of these bridges. For this reason, the U.S. Forest Service, Forest Products Laboratory (FPL), and the Federal Highway Administration have supported several research programs to attain the objective listed above. This report is a result of a study sponsored by the FPL, with the objective of determining how highway truckloads are distributed to girders of a glued-laminated timber bridge. The American Association of State Highway and Transportation Official (AASHTO) load and resistance factor design (LRFD) Bridge Design Specification provides live-load distribution provisions for glued-laminated girder timber bridges that were used in previous AASHTO Specifications. The AASHTO live-load distribution provisions were reviewed in this report. Field-test results were used to review the current AASHTO LRFD glued-laminated timber girder bridge-design specifications and to validate analytical results obtained by finite-element analyses. With the validated analytical models, parametric studies were performed to determine the worst-case live-load distribution factors that can be used to calculate the design moment and shear for glued-laminated timber girders. Simplified live-load distribution equations that can be used to determine these distribution factors were developed and are provided in this report. These equations take into account how load is distributed to the bridge girders, considering the effects of span length, girder spacing, and clear width of the bridge.
Download or read book Experimental and Analytical Load Distribution Behavior of Glued Laminated Timber Deck Bridges written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Finite Analysis of Glued laminated Timber Girder Bridges written by Hanil Cha and published by . This book was released on 2004 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: A user friendly preprocessor to the ANSYS software was developed and used to model glulam girder bridges for finite element analysis. The program requires input data such as bridge dimensions, material properties, load, and load positions for analyzing the bridge. Five modeling options to idealize the connection between the bridge deck and the bridge girder are available in the developed program. The program also allows the user to model the bridge support conditions to account for end restraints. Shell elements were used to model the bridge deck while beam or shell elements can be utilized to model the bridge girders. Several output files that contain deflection, stress, and strain contours in the deck or girders are also generated during the analysis process. The file containing the deflection results can also be imported into the Excel software and be used to represent the results in a graphical format. Eight bridges with available experimental data were analyzed to calibrate finite elements results. A study was first conducted to investigate the sensitivity of the finite element results to the modeling technique, a slight change in the material properties, and the end conditions. The analytical results were generally in agreement with the experimental results. In addition, the analysis showed that the idealization of the support condition has a significant effect on the results.
Download or read book Timber Bridges written by National Research Council (U.S.). Transportation Research Board and published by Transportation Research Board National Research. This book was released on 1986 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transverse Post tensioning of Longitudinally Laminated Timber Bridge Decks written by Raymond J. Taylor and published by . This book was released on 1979 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thougtit that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 31 (thesis year 1986) a total of 11 ,480 theses titles trom 24 Canadian and 182 United States universities. We are sure that this broader base tor these titles reported will greatly enhance the value ot this important annual reterence work. While Volume 31 reports theses submitted in 1986, on occasion, certain univer sities do re port theses submitted in previousyears but not reported at the time.
Download or read book Stress laminated Wood Bridge Decks written by Michael G. Oliva and published by . This book was released on 1990 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Analytical Model for Relaxation Behaviour in Prestressed Laminated Wood Bridge Decks written by and published by . This book was released on 1983 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Field Performance of Timber Bridges written by Lola E. Hislop and published by . This book was released on 1996 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
