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Author : Rula Bakir Abu-Kishk
Release : 1989
Genre :
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Book Synopsis An Alternate Method of Bridge Strengthening by Providing Partial End Restraint by : Rula Bakir Abu-Kishk
Download or read book An Alternate Method of Bridge Strengthening by Providing Partial End Restraint written by Rula Bakir Abu-Kishk. This book was released on 1989. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Release : 1989
Genre : Bridges
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Book Synopsis Alternate Methods of Bridge Strengthening by :
Download or read book Alternate Methods of Bridge Strengthening written by . This book was released on 1989. Available in PDF, EPUB and Kindle. Book excerpt: The need for upgrading a large number of understrength and obsolete bridges in the United States has been well documented in the literature. Through the performance of several Iowa DOT projects, the concept of strengthening bridges (simple and continuous spans) by post-tensioning has been developed. The purpose of this project was to investigate two additional strengthening alternatives that may be more efficient than post-tensioning in certain situations. The research program for each strengthening scheme included a literature review, laboratory testing of the strengthening scheme, and a finite-element analysis of the scheme. For clarity the two strengthening schemes are presented separately. In Part 1 of this report, the strengthening of existing steel stringers in composite steel beam concrete-deck bridges by providing partial end restraint was shown to be feasible. Part 2 of this report summarizes the research that was undertaken to strengthen the negative moment regions of continuous, composite bridges. Two schemes were investigated: post-compression of stringers and superimposed trusses within the stringers.
Author :
Release : 1994
Genre :
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Book Synopsis Utilization of Partial End Restraint in Bridge Strengthening by :
Download or read book Utilization of Partial End Restraint in Bridge Strengthening written by . This book was released on 1994. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this investigation is to determine a technique for increasing the capacity of bridges to accommodate today's increase in loading. Strengthening existing steel stringers in composite, steel-beam, concrete-deck bridges by providing partial end restraint is shown to be feasible. The research program included a review of existing literature, testing of a full-scale bridge beam and a 1/3-scale bridge model, and finite-element analyses of the restraint brackets, the test beam, and the model bridge. Analytical and experimental results of this investigation are presented, as well as results from an analytical investigation of the bridge model when subjected to various degrees of end restraint. Six different degrees of end restraint were examined. The achieved percent reductions ranged from 12% to 26% for midspan strains, 20% to 30% for midspan deflections, and 10% to 32% for beam end rotations. The correlation between the analytical and experimental results verified the basic design assumptions; thus, the analytical models can be used for determining the location and the degree of end restraint required to strengthen an existing bridge.
Author : Wade H. Shafer
Release : 2012-12-06
Genre : Science
Kind : eBook
Book Rating : 747/5 ( reviews)
Book Synopsis Masters Theses in the Pure and Applied Sciences by : Wade H. Shafer
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer. This book was released on 2012-12-06. 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 thought 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 34 (thesis year 1989) a total of 13,377 theses titles from 26 Canadian and 184 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 34 reports theses submitted in 1989, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
Author :
Release : 1992
Genre : Bridges
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Book Synopsis Third NSF Workshop on Bridge Engineering Research in Progress by :
Download or read book Third NSF Workshop on Bridge Engineering Research in Progress written by . This book was released on 1992. Available in PDF, EPUB and Kindle. Book excerpt:
