Descripción del proyecto
Estructuras híbridas resilientes a los terremotos
La ingeniería sísmica busca minimizar los daños estructurales y evitar el desplome de los edificios. Sin embargo, los movimientos sísmicos fuertes todavía provocan lesiones, muertes y pérdidas debido a daños estructurales y no estructurales, así como interrupciones de los negocios a largo plazo. Además, los terremotos suelen producir grandes derivas residuales que pueden perjudicar la operatividad y la reparabilidad de las estructuras. Por lo tanto, se necesitan urgentemente estructuras innovadoras que promuevan la resiliencia sísmica al mitigar los daños causados por los terremotos, reducir las derivas residuales y permitir una reparación rápida. El proyecto SC-HYBWalls, financiado con fondos europeos, desarrollará una configuración estructural innovadora basada en un nuevo mecanismo autocentrado combinado con sistemas estructurales híbridos de acero y hormigón para permitir la disipación de energía, un daño mínimo y una reducción de derivas residuales, a fin de favorecer la reocupación inmediata después de terremotos de magnitud moderada y la reparación en caso de terremotos de mayor magnitud.
Objetivo
Control of both structural and non-structural damage is of utmost importance in Performance-Based Earthquake Engineering. Alleviation of the structural damage and reducing collapse risk under sever ground motions has been a general research focus in earthquake engineering. However, earthquake reconnaissance reports also foreground the significance of injuries, fatalities and economical losses due to failure of non-structural components. Furthermore, the functionality of some critical buildings carrying acceleration-sensitive equipment such as hospitals can be interrupted due to non-structural damage after a seismic event. Therefore, it is vital to urgently meet an inevitable social demand for truly resilient construction. In target resilient buildings, both structural and non-structural damage should be minimized simultaneously in order to mitigate direct and indirect losses such as repair costs and costly downtime during which the building cannot be used or occupied. Different strategies have been implemented by researchers to mitigate the structural and non-structural damage. As an instance, self-centering frames have been developed with the aim of avoiding residual drifts after a seismic event. Meanwhile, hybrid steel-concrete frames consisting of coupled walls with controlled energy dissipation mechanism have recently grabbed a lot of attentions since they take the advantage of both stiffness of RC walls and the ductility and energy dissipation capacity of steel components. The aim of this project is to develop and investigate a novel resilient structural system in which a self-centering mechanism is coupled with hybrid steel-concrete structural systems. Hence, the new system will be capable of resisting moderate to high intensity ground motions while both structural and non-structural damages are kept minimum simultaneously. Employment of this novel earthquake resilient structural system also leads to sustainable, fast and simple construction.
Ámbito científico
Programa(s)
Régimen de financiación
MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)Coordinador
WC1E 6BT London
Reino Unido