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8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering Methods in Structural Dynamics and Earthquake Engineering, 2021
The severe socioeconomic impact of recent earthquakes has further highlighted the existing mismat... more The severe socioeconomic impact of recent earthquakes has further highlighted the existing mismatch between societal expectations and reality of seismic performance of modern buildings. Targeting the traditional Life-Safety level is not enough when dealing with new building design, thus the seismic scientific community is currently aiming to raise the bar in terms of seismic/structural safety. To achieve this goal, different strategies might be adopted, as implementing more advanced design methodologies, increasing the seismic demand (design) level and/or switching from a traditional/monolithic building system to an innovative high performance low-damage structure, capable to withstand high levels of shaking without being (significantly) damaged. Based on this motivation, the paper aims at comparingthrough a parametric studythe cost/performance of Reinforced Concrete case-study buildings designed for increasing level of seismic intensity (low-to-high) according to: a) alternative design approaches (force-based vs displacement-based) and b) different earthquake-resisting technologies (monolithic vs low-damage). Thirty-seven parametric configurations are investigated. Analytical/numerical investigations are carried out to determine the building capacity curves and loss assessment investigations are performed to compute the Expected Annual Losses (EAL). Results highlight the convenience of a displacement-based design approach, allowing for a better control of the building performance in the plastic domain, as well as of the adoption of a low-damage technology, leading to a very high performance and significantly reduced economic losses for a small increase of the initial investment costs.
8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering Methods in Structural Dynamics and Earthquake Engineering, 2021
The severe socioeconomic impact of recent earthquakes has further highlighted the existing mismat... more The severe socioeconomic impact of recent earthquakes has further highlighted the existing mismatch between societal expectations and reality of seismic performance of modern buildings. Targeting the traditional Life-Safety level is not enough when dealing with new building design, thus the seismic scientific community is currently aiming to raise the bar in terms of seismic/structural safety. To achieve this goal, different strategies might be adopted, as implementing more advanced design methodologies, increasing the seismic demand (design) level and/or switching from a traditional/monolithic building system to an innovative high performance low-damage structure, capable to withstand high levels of shaking without being (significantly) damaged. Based on this motivation, the paper aims at comparingthrough a parametric studythe cost/performance of Reinforced Concrete case-study buildings designed for increasing level of seismic intensity (low-to-high) according to: a) alternative design approaches (force-based vs displacement-based) and b) different earthquake-resisting technologies (monolithic vs low-damage). Thirty-seven parametric configurations are investigated. Analytical/numerical investigations are carried out to determine the building capacity curves and loss assessment investigations are performed to compute the Expected Annual Losses (EAL). Results highlight the convenience of a displacement-based design approach, allowing for a better control of the building performance in the plastic domain, as well as of the adoption of a low-damage technology, leading to a very high performance and significantly reduced economic losses for a small increase of the initial investment costs.