In the quest to fortify buildings against earthquakes, researchers have long relied on two-dimensional models to simulate structural behavior. However, a new study published in the journal Frontiers in Built Environment, translates to “Frontiers in the Built Environment,” challenges this convention by employing a low-dimensional, three-dimensional (3D) mechanical model. This approach, led by Angelo Di Egidio from the Department of Civil, Construction-Architectural and Environmental Engineering at the University of L’Aquila in Italy, promises to revolutionize how we understand and enhance the seismic performance of structures.
Di Egidio and his team focused on improving the seismic response of both new and existing structures, a critical concern in civil engineering. Their innovative method involves using inerter devices, mechanical elements that resist acceleration, to dampen the effects of earthquakes. The study compares two approaches: directly connecting inerter devices to the structure and linking the structure to external auxiliary structures equipped with inerters.
The research highlights the importance of considering torsional effects, which are often overlooked in two-dimensional models. “By incorporating torsional modes into our 3D model, we can capture a more comprehensive picture of the structure’s seismic response,” Di Egidio explains. This nuanced understanding allows for more effective seismic mitigation strategies.
The study’s findings are compelling. Performance curves and maps reveal that both methods significantly improve the structure’s seismic response across a wide range of parameters. However, the approach using external structures equipped with inerter devices showed particularly favorable results. This method could be a game-changer for the energy sector, where the integrity of structures is paramount. For instance, it could enhance the seismic resilience of power plants, refineries, and other critical energy infrastructure, reducing downtime and repair costs in the event of an earthquake.
The implications of this research are far-reaching. As cities continue to grow and densify, the need for robust, earthquake-resistant structures becomes ever more pressing. This study provides a roadmap for engineers and architects to design buildings that can withstand seismic events more effectively. Moreover, it opens up new avenues for retrofitting existing structures, a crucial consideration in regions prone to earthquakes.
Looking ahead, this research could shape future developments in the field by encouraging a shift towards more comprehensive, 3D modeling of structural behavior. It also underscores the potential of inerter devices in seismic mitigation, a technology that has seen limited application in the built environment thus far. As Di Egidio notes, “The use of inerters in structural engineering is still in its infancy. This study is a step towards unlocking their full potential.”
In an era of increasing urbanization and climate change, the need for resilient, sustainable infrastructure has never been greater. This study, published in the journal Frontiers in Built Environment, offers a glimpse into the future of seismic engineering, one where buildings are not just structures, but lifelines that withstand the test of time and nature.