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Active control of extremely prestressed simple supported composite bridges

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dc.contributor.advisor Jerome J. Connor. en_US
dc.contributor.author Dagher, Bahjat (Bahjat Nouhad) en_US
dc.contributor.other Massachusetts Institute of Technology. Dept. of Civil and Environmental Engineering. en_US
dc.date.accessioned 2007-09-28T13:15:03Z
dc.date.available 2007-09-28T13:15:03Z
dc.date.copyright 2007 en_US
dc.date.issued 2007 en_US
dc.identifier.uri http://hdl.handle.net/1721.1/38940
dc.description Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2007. en_US
dc.description Includes bibliographical references (leaf 67). en_US
dc.description.abstract More than 600,000 US bridges are considered to be in need of rehabilitation. More than 90 Billion US Dollars is the estimated amount of money required. According to the National Bridge Inventory, 18.5% of those bridges are structurally deficient. Many methods of rehabilitation have been sought out by engineers throughout the years. Perhaps the most interesting of all solutions is utilizing external post tensioning cables to add to the stiffness of the system. External post tensioning can be considered to be a cheap solution that is easy to install, and easy to fix in the future. What has not been discussed among engineers is the possibility of controlling the tendon force. Vertical deflections could be monitored and assessed, and a consequent axial prestressing force could be applied on the cables. This report investigates in detail the issues involved in the design of externally prestressed tendons on a simply supported composite bridge of specific properties, and touches on the reasoning behind active control and the limitations that the current technology has. en_US
dc.description.statementofresponsibility by Bahjat Dagher. en_US
dc.format.extent 67 leaves en_US
dc.language.iso eng en_US
dc.publisher Massachusetts Institute of Technology en_US
dc.rights M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. en_US
dc.rights.uri http://dspace.mit.edu/handle/1721.1/7582
dc.subject Civil and Environmental Engineering. en_US
dc.title Active control of extremely prestressed simple supported composite bridges en_US
dc.type Thesis en_US
dc.description.degree M.Eng. en_US
dc.contributor.department Massachusetts Institute of Technology. Dept. of Civil and Environmental Engineering. en_US
dc.identifier.oclc 166268659 en_US


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