Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Direct loss-based seismic design: state of the art and current challenges
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.
Direct loss-based seismic design: state of the art and current challenges
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.
Direct loss-based seismic design: state of the art and current challenges
Gentile, R (Autor:in)
14.06.2023
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. (2023)
Paper
Elektronische Ressource
Englisch
DDC:
690
Seismic retrofit of reinforced concrete frames by direct loss-based design
| BASE | 2023