Browsing by Author "Tagle Lizana, Santiago José"
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- ItemPerformance of a RC wall building subjected to earthquake and tsunami loads in sequence(2019) Tagle Lizana, Santiago José; Jünemann Ureta, Rosita; Pontificia Universidad Católica de Chile. Escuela de IngenieríaEl presente estudio investiga el comportamiento de un edificio típico chileno de hormigón armado, bajo la acción secuencial de un sismo y tsunami utilizando un doble análisis de pushover. Un edificio real dañado luego del terremoto del Maule en 2010 (MW = 8:8) es considerado como edificio de estudio. Un modelo simplificado del edificio es propuesto y validado con un modelo 3D no lineal del edificio. Los resultados muestran que el modelo simplificado replica satisfactoriamente el comportamiento para sismo y tsunami. El modelo validado es sujeto a una carga en cascada de sismo y tsunami. Diferentes casos de tsunami son aplicados a diferentes estados de daño en la estructura producto de un sismo. El análisis de la carga de tsunami mostró que la capacidad y comportamiento de la estructura depende del número de Froude en el flujo. Además, la respuesta del edificio ante un tsunami no se ve afectado por el sismo previo, excepto si el sismo es severo. En este último caso, la capacidad del edificio frente a un tsunami se reduce considerablemente si este actúa en la misma dirección del sismo.
- ItemPerformance of a reinforced concrete wall building subjected to sequential earthquake and tsunami loading(2021) Tagle Lizana, Santiago José; Jünemann Ureta, Rosita; Vásquez González, Jorge Andrés; Llera Martin, Juan Carlos de la; Baiguera, MarcoThis paper investigates the behavior of a typical Chilean reinforced concrete wall building under sequential earthquake and tsunami actions using a double pushover analysis approach. A real concrete wall structure that was damaged after the Mw = 8.8 2010 Maule earthquake is considered as a case study building and a simplified nonlinear finite element model of a fictitious slice of the building is subjected to earthquake and tsunami loading in sequence. The analysis of the building under these loadings consists of three stages: the structure is first subjected to seismic loading by means of a pushover analysis until a specific damage state is reached; then a pushover with the same load pattern but in the opposite direction is applied until the shear at the base is zero; and finally, the building is subjected to tsunami loading by means of a variable depth pushover analysis until the maximum capacity is reached. Different tsunami load cases are considered in this study, varying the Froude number and the direction of the tsunami loading. The results show that the tsunami response of the building is mainly dependent on the Froude number of the tsunami flow; however, when the seismic damage is severe, the tsunami capacity of the building is found to be reduced. This is more likely to occur when the effect of the tsunami increases the damage previously induced by the earthquake in the same direction.