Maestría en Ingeniería Civil con Mención en Estructuras Metálicas

Permanent URI for this collectionhttp://repositorio.uta.edu.ec/handle/123456789/34193

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Subject: search.filters.subject.NEC 2015

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    Diseño sismorresistente de un edificio de 4 plantas en estructura metálica con un subsuelo en hormigón armado ubicado en la ciudad de Quito
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Maestría en Ingeniería Civil con Mención en Estructuras Metálicas, 2024-09) Quintana Vásconez, Roberto Sebastián; Peña Jordán, Francisco Agustín
    The present thesis shows the structural design of a project located in a high seismic activity zone, with particular focus on seismic safety and compliance with applicable regulations such as AISC 341, AISC 360, AISC 358, NEC 2015, and ASCE 7-16. Based on previous geotechnical studies, a detailed analysis of soil conditions and expected loads was conducted to ensure a solid foundation for the structure. This analysis enabled the identification of the necessary seismic parameters to adapt the structural design to the specific characteristics of the terrain and ensure stability against seismic movements. During the project development, specialized software was used to perform structural modeling. Through these programs, seismic loads were precisely simulated, analyzing both the stresses and deformations that the structure could experience. This approach optimized the structural behavior, ensuring an adequate distribution of stresses and minimizing inter-story drifts and lateral displacements at each level. The results demonstrated robust structural performance under the seismic demands of the site, highlighting the implementation of cruciform steel columns. This structural solution maximized the building's efficiency, leveraging its high moment of inertia, which is essential for resisting lateral loads. Finally, the validation of the design parameters confirmed compliance with seismic design codes, ensuring that the building can withstand the expected seismic demands without compromising its safety or functionality. This comprehensive approach has allowed the development of an optimized structure that meets local requirements, providing a viable and safe solution for high seismic risk conditions.
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    Construcción de curvas de fragilidad al colapso del Parqueadero del Mercado Central de Ambato
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Maestría en Ingeniería Civil con Mención en Estructuras Metálicas, 2024-10) Morales Criollo, William Mauricio; Ramírez Cabrera, Wladimir José; Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica
    Ambato is located in a geographical region with a high risk of seismic activity, which represents a danger for its inhabitants; this research focused on the estimation of the probability of damage of the Ambato Central Market parking lot using the time-history analysis method by obtaining collapse fragility curves from the generation of IDA curves, in addition, the structure was subjected to 7 site seismic records, each one with its 2 pairs of records duly scaled and corrected. In this research it was necessary to follow the guidelines of ASCE 41-17, FEMA and NEC 2015. In the model analysis it was visualized: torsional distortion and absence of non-precalibrated connections. The results showed that the analyzed structure reached the immediate occupancy level (IO) and did not reach the life safety level (LS) since the structure collapsed. It was determined that the parking lot is more vulnerable in the Y direction presenting the following damage probabilities: 24.67 percent with no damage to the structure, 38.10 percent at an IO level and 37.23 percent at a Total Collapse in an Occasional seismic event with maximum spectral acceleration of 0. 85 g; for a Rare seismic event the following probabilities were evidenced: 0.78 percent with no damage to the structure, 14.64 percent at an IO level and 84.57 percent for Total Collapse at maximum spectral acceleration of 1.19 g. A total of 271 nonlinear time-history dynamic simulations were performed. The high frequency of earthquakes in Ecuador requires the development of more advanced structural analyses for a more accurate evaluation of the behavior of buildings. This research promotes the application of collapse fragility curves as a more accurate alternative to take preventive measures to reduce human and economic losses.
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    Análisis de vulnerabilidad sísmica y reforzamiento estructural de la unidad nueva del Hospital Básico El Puyo, ubicado en la provincia de Pastaza, Ecuador
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Maestría en Ingeniería Civil con Mención en Estructuras Metálicas, 2023-03) Cáceres Vargas, Andrea Carolina; Caiza Sánchez, Pablo Enrique
    Seismic vulnerability in essential structures has been a subject of little analysis despite the importance that a building of this type entails, therefore, this research covers the constructive reality of the new unit of the Basic Hospital El Puyo, a structure built with regulations In force, however, the lack of technical criteria of the professionals who designed it significantly influenced the construction, generating cracking problems. During the development of this research, it was necessary to assess the vulnerability of this structure through quick visual inspections and the application of forms with the NEC 2015, FEMA P-154 and FUNVISIS methodologies. Then, non-destructive tests of concrete and soil tests were carried out in order to verify that the design plans have been respected. Subsequently, a mathematical model of this structure composed of two blocks was analyzed using structural design software, where, through a linear static analysis, it turned out that it presented torsion in one of its blocks, which is why a reinforcement was proposed. structural by means of steel stiffening diagonals in certain side frames. On the other hand, the current seismic performance of blocks 1 and 2 was considered, through a non-linear static analysis, obtaining as a result, that they do not meet the performance level for the rare design earthquake, since, the point The performance of these blocks is outside the capacity curve, its resistance being insufficient to meet the seismic requirements; Thus, under this criterion, the pushover was executed with the two reinforced structures, verifying that there is a good seismic performance. Finally, the soil-structure interaction analysis was carried out, verifying that the hospital unit presents permitted differential settlements.