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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/1386

Title: Analysis and Design of Precast - Cast in Situ Concrete Composite Bridges
Authors: Kitaw, Zewde
Advisors: Dr.Asnake Adamu
Copyright: Nov-2005
Date Added: 11-Oct-2008
Publisher: Addis Ababa University
Abstract: The weather condition and the terrain of Ethiopia need a number of bridges to be constructed for every km length of the roads. In addition to this the bridges constructed during the occupation of Ethiopia by Italian government are aged and deteriorated. These bridges require maintenance or replacement. Considering the nature of this need and construction of new roads, the Ethiopian government investing billions of birr for road sector development out of which more than 30% of the project cost is assigned to the construction of bridges. In spite of the large number of bridge construction in the country, the method of construction of cast in place concrete requires long time of construction and tremendous volume of false work. Further more, un expected non-seasonal rainfall may occur at the up stream of bridge construction site and affect the constructed false work partially or damage it as a whole. Thus, this study has attempted to analyze, design and compare the amount of time and false work saved by constructing composite concrete bridges against fully cast in place concrete bridges. The quantities of construction material like concrete and reinforcing bars were increased in construction of composite bridges. Further equipments like crane and law bed are used in composite construction. As per the analysis, design and cost comparison, the developed system offer a better economic alternative in view of overall cost of construction practiced in the country. The intention of this thesis is therefore to develop analysis and design procedure of a precast-cast in place concrete composite bridge that can be constructed out side of the site or near the site, transported and erected at the site and completed with in less time than the time required for bridge construction practiced in the country. The developed procedure is illustrated using practical example where saving in cost is compared
Description: A Thesis Submitted to School of Graduate Studies, Addis Ababa University In Partial Fulfillment of the Requirements for the Degree of MASTER OF SCIENCE In CIVIL ENGINEERING
URI: http://hdl.handle.net/123456789/1386
Appears in:Thesis - Civil Engineering

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