Fragility Assessment of Pre-Northridge Steel Moment Frames Using Finite-Length Plastic Hinge Elements and Concentrated Plasticity Fracture Elements

Ribeiro, Filipe L. A.; Barbosa, André R.; Neves, Luís

doi:10.32604/cmes.2019.06296

Cited by 2 publications

(3 citation statements)

References 19 publications

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“…In performance-based design, the trustworthiness of the structural design relies on the fidelity of the numerical model. [15][16][17][18][19][20] Many performance assessment methodologies, such as FEMA P-695 21 and FEMA P-58, 22 consider modeling uncertainty by categorizing the fidelity of the numerical model and adjusting the fragility function accordingly. However, the seismic demands estimated for the structural and nonstructural components can be affected by the use of a unique numerical model that does not directly account for modeling uncertainty.…”

Section: Introductionmentioning

confidence: 99%

“…If not codified, new lateral‐force resisting systems are subject to designs using alternative methods, 14 which are often based on performance‐based design philosophies. In performance‐based design, the trustworthiness of the structural design relies on the fidelity of the numerical model 15–20 . Many performance assessment methodologies, such as FEMA P‐695 21 and FEMA P‐58, 22 consider modeling uncertainty by categorizing the fidelity of the numerical model and adjusting the fragility function accordingly.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modeling uncertainty of specimens employing spines and force‐limiting connections tested at E‐defense shake table

Astudillo

Rivera

Duke

et al. 2023

Earthq Engng Struct Dyn

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In light of the significant damage observed after earthquakes in Japan and New Zealand, enhanced performing seismic force‐resisting systems and energy dissipation devices are increasingly being utilized in buildings. Numerical models are needed to estimate the seismic response of these systems for seismic design or assessment. While there have been studies on modeling uncertainty, selecting the model features most important to response can remain ambiguous, especially if the structure employs less well‐established lateral force‐resisting systems and components. Herein, a global sensitivity analysis was used to address modeling uncertainty in specimens with elastic spines and force‐limiting connections (FLCs) physically tested at full‐scale at the E‐Defense shake table in Japan. Modeling uncertainty was addressed for both model class and model parameter uncertainty by varying primary models to develop several secondary models according to pre‐established uncertainty groups. Numerical estimates of peak story drift ratio and floor acceleration were compared to the results from the experimental testing program using confidence intervals and root‐mean‐square error. Metrics such as the coefficient of variation, variance, linear Pearson correlation coefficient, and Sobol index were used to gain intuition about each model feature's contribution to the dispersion in estimates of the engineering demands. Peak floor acceleration was found to be more sensitive to modeling uncertainty compared to story drift ratio. Assumptions for the spine‐to‐frame connection significantly impacted estimates of peak floor accelerations, which could influence future design methods for spines and FLC in enhanced lateral‐force resisting systems.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modeling uncertainty of specimens employing spines and force‐limiting connections tested at E‐defense shake table

Astudillo

Rivera

Duke

et al. 2023

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

show abstract

“…This extended PBEE framework could be used to develop, calibrate and validate simplified probabilistic performance-based design procedures. Ribeiro et al [Ribeiro, Barbosa and Neves (2019)] studied the probabilistic performance of the 3-and 9-story pre-Northridge SAC buildings in Los Angeles considering ductile and brittle beam-column connection failures. This study investigated, using OpenSees, the influence of the uncertainty associated with connections brittle fracture on building interstory deformation capacity, as well as its impact on the bias and variability of fragility functions and loss assessment.…”

mentioning

confidence: 99%

Preface: Advances in OpenSees Applications to Civil Engineering

Conte¹,

McKenna²,

Gu³

2019

Computer Modeling in Engineering &Amp; Sciences

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, for his educational efforts and visionary research contributions that spanned theory, numerical modeling, computer simulation, laboratory experiments, field testing, and design code development. His decades of prolific, enthusiastic, and selfless service to the academia, profession and industry as well as his friendship will be remembered forever. In his capacity as the Director of the Pacific Earthquake Engineering Research (PEER) Center (2009-2015), Professor Mahin was steadfast in supporting the development and application of OpenSees (i.e., Open System for Earthquake Engineering Simulation). To recognize his great efforts, this special issue is about the applications of OpenSees in civil engineering, and Computer Modeling in Engineering & Sciences (CMES) is a suitable journal for this special issue. OpenSees is an open source object-oriented finite element (FE) software framework for modeling structural and geotechnical systems subject to static or dynamic loads, with a particular emphasis on earthquake engineering. This computational software framework has been developed since 1997 under the umbrella of the PEER Center mainly funded by the National Science Foundation (NSF). OpenSees supports a wide range of simulation purposes, solution procedures, distributed computing capabilities, and high-end computing services. For example, it allows the integration of advanced models of structures and soils to investigate challenging soil-foundation-structure interaction problems. Specifically, it has very attractive capabilities for model parameterization, response sensitivity analysis, probabilistic modeling, and reliability analysis. As an open-source FE software framework, OpenSees has continuously integrated the latest research outcomes (e.g., finite element and material models, numerical solution strategies, computing technologies) from researchers and engineers across the world. As such, OpenSees has become one of the most powerful open-source research and development tools, through which users can implement and test new ideas and concepts more easily and faster than before. With this background in mind, this special issue mainly focuses on, but not limited to, the sustained developments and widespread applications of OpenSees in the civil engineering. The work collected in this

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Fragility Assessment of Pre-Northridge Steel Moment Frames Using Finite-Length Plastic Hinge Elements and Concentrated Plasticity Fracture Elements

Cited by 2 publications

References 19 publications

Modeling uncertainty of specimens employing spines and force‐limiting connections tested at E‐defense shake table

Modeling uncertainty of specimens employing spines and force‐limiting connections tested at E‐defense shake table

Preface: Advances in OpenSees Applications to Civil Engineering

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