Bridge approach slab analysis and design incorporating elastic soil support

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Bridge approach slab analysis and design incorporating elastic soil support

Please use this identifier to cite or link to this item: http://hdl.handle.net/10355/14555

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dc.contributor.advisor Gopalaratnam, Vellore S. (Vellore Shroff), 1955- en_US
dc.contributor.author Ma, Shuang
dc.date.accessioned 2012-06-07T14:49:02Z
dc.date.available 2012-06-07T14:49:02Z
dc.date.issued 2011
dc.date.submitted 2011 Fall en_US
dc.identifier.other MaS-121211-T831
dc.identifier.uri http://hdl.handle.net/10355/14555
dc.description Title from PDF of title page (University of Missouri--Columbia, viewed on June 7, 2012). en_US
dc.description The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. en_US
dc.description Thesis advisor: Dr. Vellore S. Gopalaratnam en_US
dc.description Includes bibliographical references. en_US
dc.description M.S. University of Missouri--Columbia 2011. en_US
dc.description Dissertations, Academic -- University of Missouri--Columbia -- Civil engineering. en_US
dc.description "December 2011" en_US
dc.description.abstract The development of equations necessary for the analysis of finite bridge approach slabs (BAS) on elastic soil support is reported in this thesis. Results are compared for moments and shear forces governing the design for a wide range of values of soil elastic modulus ranging from dense sand to very loose sand. Results from systematic studies assuming wash out of soil support are also presented using a customized uniaxial finite-difference model. The influences of wash-out length and location have been discussed. Moreover, the functions of sleeper slab at the pavement end of the conventional design are studied. It is replaced by a modified end-section reinforcement detailing to provide enhanced local two-way action, providing increased flexural rigidity in the direction transverse to the traffic direction. An Excel-based VBA program is developed for application of designing bridge approach slab incorporating partial elastic soil support. Additionally, a biaxial finite-difference model is developed using MATLAB for better understanding the performance of BAS in both longitudinal and transverse directions. Results from uniaxial and biaxial solutions are compared and discussed. Initial construction cost of this new design alternative is computed and presented to demonstrate that the BAS designed with consideration of elastic soil support results in a cost-effective design. Life cycle costs too are competitive if only agency costs are included, for rural traffic demands, this design is the most cost-effective alternatives among those considered. en_US
dc.format.extent xi, 131 pages en_US
dc.language.iso en_US en_US
dc.publisher University of Missouri--Columbia en_US
dc.relation.ispartof 2011 Freely available theses (MU) en_US
dc.subject soil washout en_US
dc.subject biaxial bending en_US
dc.subject differential settlement en_US
dc.subject bridge approach slab en_US
dc.title Bridge approach slab analysis and design incorporating elastic soil support en_US
dc.type Thesis en_US
thesis.degree.discipline Civil engineering en_US
thesis.degree.grantor University of Missouri--Columbia en_US
thesis.degree.name M.S. en_US
thesis.degree.level Masters en_US
dc.relation.ispartofcommunity University of Missouri-Columbia. Graduate School. Theses and Dissertations. Theses. 2011 Theses


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