Maestría en Ingeniería Civil con Mención en Estructuras Metálicas

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    Diseño y análisis del parqueadero central de la ciudad de Ambato de hormigón armado y estructura metálica con el uso de elastómeros en la cimentación
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Maestría en Ingeniería Civil con Mención en Estructuras Metálicas, 2022) Sánchez Tenesaca, Estefanía Jacqueline; Fiallos Condo, Jéssica Tatiana; Chérrez Gavilanes, Diego Sebastián
    In the present research work several factors are taken to determine the seismic safety of buildings, materials such as elastomers have been used for structural protection. The design and analysis of the central parking lot of the city of Ambato of reinforced concrete and metal structure with the use of elastomeric insulators in the foundation helps to improve seismic behavior. A modeling was carried out using software analyzing each of the structural elements, especially the behavior of the foundation. Structural and economic analysis shows that a structure equipped with elastomeric insulators in the foundation reduces its initial investment in the structural system since these are responsible for dissipating much of the energy that enters the system so the sections of the structural elements are reduced which implies savings. Its benefit is given in the long term reflected in the performance that the structure can achieve. In the analysis torsional distortion was visualized, we did not find the use of prequalified connections, factor of importance of the structure equal to one, vibration modes insufficient for a minimum mass participation of 90 percent, so we performed a verification through a linear analysis and a static nonlinear analysis with a factor of importance I = 1.5, , additionally, we must analyze the essential structures by means of a non-linear analysis for a return period of 2500 years as stipulated in the NEC SE DS 15. Therefore, this research determines the level of structural performance, as stipulated in the Ecuadorian Construction Standard in force, in the chapter of seismic design thus deducing that it was necessary to implement a structural reinforcement system, which at least allows the structure to remain at a level of (Life Safety) LS which is what the standard requires us.
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    Diseño por capacidad partiendo de un análisis comparativo entre el método modal espectral y el método tiempo historia con el uso de acelerogramas sintéticos y la Norma Ecuatoriana de la Construcción 2015; de un edificio de 9 pisos en estructura metálica
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Maestría en Ingeniería Civil con Mención en Estructuras Metálicas, 2022-09) Cevallos Cabrera, Jorge Washington; Medina Robalino, Wilson Santiago
    National and international regulations are being updated based on the lessons learned from seismic events; having buildings designed in some cases with regulations that were not very demanding in the dynamic part and in other cases built without any technical procedure; it is necessary to improve the analysis of the behavior of the structure subjected to lateral forces produced by earthquakes in a controlled manner, leading to a theoretical collapse of the structure. This variation is achieved by progressively increasing the amplitudes of the accelerograms used as dynamic excitation. In this work, this numerical procedure for the evaluation of the seismic behavior of structures is applied in order to evaluate the values of the behavior factor postulated in the Ecuadorian Standard for the seismic-resistant design of special steel moment-resisting frames. However, due to the non-linear behavior of the soil, the solution is limited to a set of activities inherent to the correct structural modeling and use of properly filtered seismic records. Regarding the generation of synthetic accelerograms, they must be adjusted to an objective spectrum involving the non-linear behavior of the soil; although it is true that spectral adjustments in the time domain, due to the existence of public domain software, are relatively simple procedures to execute, it is necessary to have a wide knowledge in this type of procedure. In the process of verifying the compatibility of the responses of the vibration period of the structure by placing it as a percentage of the distance and moving the center of masses according to the Ecuadorian standard, it was evidenced that the period of the structures does not affect, due to the fact that the static eccentricity between the center of masses and the center of stiffness can increase more or less; being noticeable the more irregular the structure. By scaling the accelerograms with the response spectrum provided by the NEC; to make synthetic accelerograms, the pseudo-spectral acceleration tends to be similar to the acceleration of the target spectrum, so it could be more productive to work with accelerograms of low magnitude earthquakes, being indispensable to take into consideration the parameters of focal depth, type of fault, soil conditions, etc. For capacity analysis, it is possible to choose only the structural elements that could have some suspicion of failure, concentrating all our effort in solving these elements; it should be clear that the design by capacity does not provide design data, the results obtained serve to analyze the possible complications that could occur in the structure during a seismic movement; it is important to emphasize that they are not totally real data, taking into account that an earthquake has many variables that are not taken into account during the nonlinear analysis.