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Civil and Environmental Engineering

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2015

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Probabilistic Performance-Based Hurricane Engineering (Pbhe) Framework, Vipin Unnithan Unnikrishnan Jan 2015

Probabilistic Performance-Based Hurricane Engineering (Pbhe) Framework, Vipin Unnithan Unnikrishnan

LSU Doctoral Dissertations

In modern times, hurricanes have caused enormous losses to the communities worldwide both in terms of property damage and loss of life. In light of these losses, a comprehensive methodology is required to improve the quantification of risk and the design of structures subject to hurricane hazard. This research develops a probabilistic Performance-Based Hurricane Engineering (PBHE) framework for hurricane risk assessment. The proposed PBHE is based on the total probability theorem, similar to the Performance-Based Earthquake Engineering (PBEE) framework developed by the Pacific Earthquake Engineering Research (PEER) Center, and to the Performance-Based Wind Engineering (PBWE) framework. The methodology presented in …

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Sustainable Materials For Pavement Infrastructure: Design And Performance Of Asphalt Mixtures Containing Recycled Asphalt Shingles, Samuel B. Cooper, Jr Jan 2015

Sustainable Materials For Pavement Infrastructure: Design And Performance Of Asphalt Mixtures Containing Recycled Asphalt Shingles, Samuel B. Cooper, Jr

LSU Doctoral Dissertations

As the price of liquid asphalt continuously climb, methods are being sought to decrease material costs which will have less impact on ecological systems without compromising material or pavement performance. The use of recycled materials is one method that can replace a percentage of their virgin counterparts, thus reducing the negative impacts on the environment. Asphalt mixture performance is affected by the level of blending that occurs between aged and virgin asphalt binders. The interaction and compatibility of recycling agents (RAs) with recycled asphalt shingles (RAS) and reclaimed asphalt pavements (RAP) have not been thoroughly evaluated since the 1970s. To …

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Applications Of Large Eddy Simulation To Study Flow And Sediment Transport In Open Channel Flows, Getnet Baynesagne Agegnehu Jan 2015

Applications Of Large Eddy Simulation To Study Flow And Sediment Transport In Open Channel Flows, Getnet Baynesagne Agegnehu

LSU Doctoral Dissertations

The motivation of this study is to extend applications of Large Eddy Simulation (LES) for typical open channel flows to elucidate the time dependent three dimensional flow and sediment transport features which are usually difficult to measure in experiments. Detailed investigations are performed on the unsteady features and, in particular, turbulent structures of the flow to demonstrate the great potential of eddy resolving methods. The instantaneous flow and sediment transport fields are investigated together with the existence of coherent structures. These structures together with ejection events (u' < 0, w' > 0), are responsible for the vertical and lateral transport of suspended sediment from …

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Evaluación Del Impacto En Calidad Del Aire, Asociado A Resuspensión De Material Particulado Por La Pavimentación De La Vía Principal De Caracolí - Ciudad Bolívar, Bogotá D.C, Laura Catalina Pinto Herrera, Juan Felipe Méndez Espinosa Jan 2015

Evaluación Del Impacto En Calidad Del Aire, Asociado A Resuspensión De Material Particulado Por La Pavimentación De La Vía Principal De Caracolí - Ciudad Bolívar, Bogotá D.C, Laura Catalina Pinto Herrera, Juan Felipe Méndez Espinosa

Ingeniería Ambiental y Sanitaria

En Bogotá D.C., la Unidad de Planeación Zonal Ismael Perdomo (UPZ- N°69), en la que se encuentra el Barrio Caracoli (zona estrato uno), es catalogada según Decreto 623 de 2011, como área-fuente de contaminación Clase I por PM10 (SDA, 2012), por lo que se hace imperativo según Resolucion 601/2006 (Art 9.), la ejecución de programas que contribuyan a la reducción y control de la resuspensión de material particulado, acciones encaminadas a pavimentación de calles, asi como la implementación de criterios ambientales por parte de entidades públicas como la Unidad Administrativa Especial de Rehabilitación y Mantenimiento Vial (UAERMV), el Instituto de …

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Aproximación De Un Estudio Comparativo De Los Parámetros Utilizados Para La Determinación De La Tasa Retributiva Y Los Valores Reales En El Estudio De Caso (Estrato Cuatro De La Ciudad De Bogotá), Luisa Fernanda Lozano Garzón, Ginneth Marcela Peña Casallas Jan 2015

Aproximación De Un Estudio Comparativo De Los Parámetros Utilizados Para La Determinación De La Tasa Retributiva Y Los Valores Reales En El Estudio De Caso (Estrato Cuatro De La Ciudad De Bogotá), Luisa Fernanda Lozano Garzón, Ginneth Marcela Peña Casallas

Ingeniería Ambiental y Sanitaria

Como respuesta a la problemática ambiental frente al aumento de vertimientos en Colombia, se llevó a la implementación de un instrumento económico llamado tasa retributiva donde su objetivo es incentivar a los agentes contaminadores a reducir el impacto de dichos vertimientos, a raíz de esto y a la importancia del recurso hídrico en cuanto a la influencia que tiene en el desarrollo económico, social y ambiental del país. Este proyecto tiene el propósito de establecer el grado de aproximación del cobro de la tasa retributiva por parte de la autoridad competente y el valor obtenido utilizando la carga real y …

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