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dc.contributor.advisorCharbeneau, Randall J.en
dc.creatorEck, Bradley Josephen
dc.date.accessioned2010-10-06T21:07:51Zen
dc.date.accessioned2010-10-06T21:08:07Zen
dc.date.available2010-10-06T21:07:51Zen
dc.date.available2010-10-06T21:08:07Zen
dc.date.issued2010-05en
dc.date.submittedMay 2010en
dc.identifier.urihttp://hdl.handle.net/2152/ETD-UT-2010-05-1080en
dc.descriptiontexten
dc.description.abstractPermeable friction course (PFC) is a porous asphalt pavement placed on top of a regular impermeable roadway. Under small rainfall intensities, drainage is contained within the PFC layer; but, under higher rainfall intensities drainage occurs both within and on top of the porous pavement. This dissertation develops a computer model—the permeable friction course drainage code (PERFCODE)—to study this two-dimensional unsteady drainage process. Given a hyetograph, geometric information, and hydraulic properties, the model predicts the variation of water depth within and on top of the PFC layer through time. The porous layer is treated as an unconfined aquifer of variable saturated thickness using Darcy’s law and the Dupuit-Forchheimer assumptions. Surface flow is modeled using the diffusion wave approximation to the Saint-Venant equations. A mass balance approach is used to couple the surface and subsurface phases. Straight and curved roadway geometries are accommodated via a curvilinear grid. The model is validated using steady state solutions that were obtained independently. PERFCODE was applied to a field monitoring site near Austin, Texas and hydrographs predicted by the model were consistent with field measurements. For a sample storm studied in detail, PFC reduced the duration of sheet flow conditions by 80%. The model may be used to improve the drainage design of PFC roadways.en
dc.format.mimetypeapplication/pdfen
dc.language.isoengen
dc.subjectPorous pavementen
dc.subjectPermeable friction courseen
dc.subjectDupuit-Forchheimeren
dc.subjectSheet flowen
dc.subjectDiffusion waveen
dc.subjectHydraulic modelingen
dc.subjectHighway drainageen
dc.titleDrainage hydraulics of porous pavement : coupling surface and subsurface flowen
dc.date.updated2010-10-06T21:08:08Zen
dc.contributor.committeeMemberBarrett, Michael E.en
dc.contributor.committeeMemberHodges, Ben R.en
dc.contributor.committeeMemberMaidment, David R.en
dc.contributor.committeeMemberSepehrnoori, Kamyen
dc.description.departmentCivil, Architectural, and Environmental Engineering
dc.type.genrethesisen
thesis.degree.departmentCivil, Architectural, and Environmental Engineeringen
thesis.degree.disciplineCivil Engineeringen
thesis.degree.grantorUniversity of Texas at Austinen
thesis.degree.levelDoctoralen
thesis.degree.nameDoctor of Philosophyen


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