Earthquake Spectra· 2014Q1
Efficient Analytical Fragility Function Fitting Using Dynamic Structural Analysis
- 1,525citations
- Q1SCImago
- 2014year
Short summary
This paper proposes using statistical inference concepts and a 'multiple stripe analysis' approach to more efficiently fit fragility functions for seismic assessment, requiring fewer structural analyses than traditional 'incremental dynamic analysis'.
AI-generated from the title and abstract; the full text is not read.
Key points
- Proposes statistical inference for fitting seismic fragility functions.
- Multiple stripe analysis is more efficient than incremental dynamic analysis for fitting fragility functions.
- Efficiency gains are realized when prior knowledge of building capacity is available.
- Allows for varied ground motions across different seismic intensity levels.
AI-generated from the title and abstract; the full text is not read.
Abstract
Estimation of fragility functions using dynamic structural analysis is an important step in a number of seismic assessment procedures. This paper discusses the applicability of statistical inference concepts for fragility function estimation, describes appropriate fitting approaches for use with various structural analysis strategies, and studies how to fit fragility functions while minimizing the required number of structural analyses. Illustrative results show that multiple stripe analysis produces more efficient fragility estimates than incremental dynamic analysis for a given number of structural analyses, provided that some knowledge of the building's capacity is available prior to analysis so that relevant portions of the fragility curve can be approximately identified. This finding has other benefits, given that the multiple stripe analysis approach allows for different ground motions to be used for analyses at varying intensity levels, to represent the differing characteristics of low‐intensity and high‐intensity shaking. The proposed assessment approach also provides a framework for evaluating alternate analysis procedures that may arise in the future.
The authors' abstract, as published at the source. Earthquake Spectra, 2014 · DOI ↗
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Field: Civil and Structural Engineering
Civil and Structural EngineeringEngineering