Gentile, R; (2023) Direct loss-based seismic design: state of the art and current challenges. In: Proceedings of COMPDYN 2023: 9th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering. European Community on Computational Methods in Applied Sciences (ECCOMAS): Athens, Greece.

Preview

Text COMPDYN2023 DLBD.pdf - Accepted Version Download (1MB) | Preview

Abstract

Seismic design codes typically aim to prevent collapses or ensure safety during major, infrequent earthquakes, while minimizing damage during minor, frequent ones. However, advancements in theoretical knowledge, modeling capabilities, and observed damage have increased awareness of the impact of these codes on earthquake risk. The 1994 Northridge earthquake in the US caused significant economic consequences, prompting a paradigm shift towards performance-based earthquake engineering for risk and loss assessment. Several research efforts suggest replacing traditional force-based design with methods targeting displacements, seismic fragility, mean annual frequency of exceeding a damage state, losses, and resilience metrics. This paper focuses on direct loss-based design (DLBD), a newly developed method that enables designing structures to achieve a desired loss-related metric under site-specific seismic hazard virtually without design iterations. The paper explores the effectiveness of DLBD for designing new reinforced concrete buildings -monolithic or base-isolated- or retrofitting existing ones, the validation studies required to expand its scope, improvements needed for more accurate loss-estimation methods, and operational advances to make DLBD appealing in the practice.

Download activity - last month

Export as CSVJSONXML

Download activity - last 12 months

Export as XMLJSONCSV

Downloads by country - last 12 months

Export as XMLJSONCSV

Archive Staff Only

View Item