dc.contributor.advisor | Gopalaratnam, Vellore S. (Vellore Shroff), 1955- | eng |
dc.contributor.author | Ma, Shuang | eng |
dc.date.issued | 2011 | eng |
dc.date.submitted | 2011 Fall | eng |
dc.description | Title from PDF of title page (University of Missouri--Columbia, viewed on June 7, 2012). | eng |
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. | eng |
dc.description | Thesis advisor: Dr. Vellore S. Gopalaratnam | eng |
dc.description | Includes bibliographical references. | eng |
dc.description | M.S. University of Missouri--Columbia 2011. | eng |
dc.description | "December 2011" | eng |
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. | eng |
dc.format.extent | xi, 131 pages | eng |
dc.identifier.uri | http://hdl.handle.net/10355/14555 | |
dc.language | English | eng |
dc.publisher | University of Missouri--Columbia | eng |
dc.relation.ispartofcommunity | University of Missouri-Columbia. Graduate School. Theses and Dissertations. Theses. 2011 Theses | eng |
dc.rights | OpenAccess. | eng |
dc.rights.license | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License. | |
dc.subject | soil washout | eng |
dc.subject | biaxial bending | eng |
dc.subject | differential settlement | eng |
dc.subject | bridge approach slab | eng |
dc.title | Bridge approach slab analysis and design incorporating elastic soil support | eng |
dc.type | Thesis | eng |
thesis.degree.discipline | Civil and Environmental Engineering (MU) | eng |
thesis.degree.grantor | University of Missouri--Columbia | eng |
thesis.degree.level | Masters | eng |
thesis.degree.name | M.S. | eng |