Browsing by Author "Merino Mora, Verónica Jackeline"

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    Análisis comparativo de conexiones precalificadas con tipología soldadas y empernadas para un sistema SMF en un edificio de estructura metálica
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Maestría en Ingeniería Civil con Mención en Estructuras Metálicas, 2022-09) Merino Mora, Verónica Jackeline; Chávez Rubio, Luis Enrique
    Ecuador is located in areas where constant and significant earthquakes occur, currently it has been possible to denote the vulnerability of structural steel buildings to a severe earthquake. The scope of this work was to carry out a comparative analysis of prequalified connections with welded and bolted typology for an SMF system in a metal structure building. The ANSI/AISC 360-16 standard is the standard that establishes the specifications for designing steel structures, the ANSI/AISC 341-16 standard indicates the seismic provisions for structural steel buildings and the ANSI/AISC 358-16, which analyzes the prequalified connections for use in special moments and intermediate frames, the standards present a guide for the design of prequalified metallic connections that were used as an instrument for the different mathematical calculations, in addition, applying this methodology, a model of a steel structure was made . National and international standards were used for the study and the Etabs 2019 and Ram Connection software, both with student licenses, were used for the structural analysis. This research performs the comparative analysis of RBS, BFP, BUEEP and WUF-W prequalified connections, with welded and bolted typology for an SMF system in a metal structure building. A structural and economic analysis of the metal frame building is obtained, concluding that the elements that make up the connection in a metal frame building have an elastic behavior. In addition, it was observed that the RBS connection provides the best reliability so that the transfer in the beams (plastic hinge) prevails before that in the columns, as an energy dissipation mechanism and complying with the design philosophy. Regarding the analysis of the cost of steel in beams and columns, it was known that steel in welded beams and columns is cheaper than steel in bolted beams and columns, due to the materials, equipment, machinery and labor used. in the construction process of metal structures.
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    Análisis de la grava como filtro en el tratamiento de aguas residuales provenientes de la procesadora de lácteos “La Clementina” de la provincia de Cotopaxi, cantón Latacunga
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Civil, 2018) Merino Mora, Verónica Jackeline; Maldonado Narvaez, Lenin Rafael
    The present experimental work allows to evaluate the efficiency of gravel as filtering material in the pre-treatment of wastewater from Industrias Lácteas. For the development, analysis and design of the work, the infrastructure and the functioning of the industry were taken into account, as well as the measurement of the incoming flows for the elaboration of food products and the flow that is evacuated to the sewage system after the activities. The operation of the filter was for 90 days, with a constant flow rate of 0.105 liters / sec that must pass through the gravel and this allowed to monitor and take samples every 10 days of the effluent to analyze if there is removal or reduction of contaminants. During the first 60 days, Fats and Oils, COD and BOD5 were analyzed, obtaining satisfactory efficiency results for Fats and Oils, starting with a value of 1971.00 mg / l of unfiltered water and after 60 days of effluent treatment it reached 970.00 mg / l of filtered water, so the efficiency was 50.79%. The COD presented a behavior similar to that of Oils and Fats, but only during the first 30 days. Finally, the concentration of the BOD5 of the unfiltered water presented a total dispersion in its results, so it was carried out in the last 30 days, analysis of the unfiltered effluent and filtering only of the BOD5, obtaining an average efficiency of 36.27%. In addition, a morphological analysis of the gravel was performed on the TESCAN VEGA 3 scanning microscope to observe whether or not there are changes in the material. Despite the fact that the results of leaked sewage from the La Clementina Dairy Industry did not comply with the maximum permissible limit that governs TULSMA for the discharge of effluents in the public sewer system, the use of gravel as a material filter if the concentration of contaminants decreases, concluding that the gravel filter is efficient for the removal of contaminants, especially oils and fats.