Ingeniería Civil y Mecánica

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Subject: search.filters.subject.AISLADORES DE BASE

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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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    Análisis y diseño de un edificio con aisladores sísmicos utilizando el programa ETABS
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Civil, 2022-07) Chimbo Chacha, Washington Joel; Ramírez Cabrera, Wladimir José
    For the development of this project, the difference in the dynamic behavior of fixed and isolated structures was identified. the difference in dynamic behavior of structures with: fixed base and with isolation, for this purpose, the objective was to analyze and compare the seismic behavior between them. This research was evaluated on the design of base isolators, observing the behavior of the following parameters: drifts, mass participation, vibration period, accelerations and shear. Through the pre-design, we proceeded with the modeling of the two buildings by using appropriate software for the analysis, performing the linear modal spectral analysis for the fixed base building by using the NEC - 15 design spectrum; for the system with isolation, the nonlinear time-history analysis was performed, considering the maximum probable earthquake, for which appropriate accelerograms were used and adjusted according to the area and type of soil. It is concluded that the implementation of seismic isolators to a fixed base structure, provides a better structural behavior during an earthquake due to the damping provided by these devices, obtaining much smaller relative displacements of floors, therefore, the structure with base isolators can remain operative and with minimum or null damages in comparison to a structure with a structural system of fixed base frames.