Advances in Structural Engineering Research

Full Session with Abstracts

337103-9 - Towards Computationally-Efficient Nonlinear Analysis Models for Performance-Based Earthquake Engineering of Reinforced Concrete Buildings

Friday, April 20
1:30 PM - 3:00 PM
Location: 202CD

How does this session impact and improve the Structural Engineering Profession?
Since the application of performance-based engineering earthquake methods has recently increased in the engineering community, this session will provide hands-on state-of-the-art information on recent developments and applications to improve the ability of the attendees to take on future structural projects in their local, national, or global community.

Abstract:
The presentation will cover the application of different nonlinear numerical models in a performance-based earthquake engineering assessment of the structural risk of a three-story reinforced concrete building. Three finite element models with varying levels of computational complexity were created to study each model’s computational effort and influence on their calculated structural risk to a set of performance levels. A set of 126 dynamic analysis were performed on the developed models. Fragility curves were obtained for the performance limits of immediate occupancy, life safety, and collapse prevention and each model’s obtained results were analyzed based on statistical evidence.
Since performance-based earthquake engineering has been increasingly performed all over the world, the topic of this presentation is of interest in a regional, national and international scope. The presentation targets structural engineering researchers who aim to optimize nonlinear finite element models of reinforced concrete structures for present and future applications of performance-based methods in their respective structural research; as well as structural analysts that plan to use (or are using) nonlinear models for performance-based analyses.

Is this topic of regional, national or international interest?
National and international.

Who is the target audience?
Practitioners and researchers.

What will the audience take away from your presentation?
- Difference in calculated structural capacity and risk of linear-elastic and nonlinear numerical models.
- Overview of the performance-based modeling processes and the critical points for minimizing the computational demand while retaining the calculation accuracy.
- Breakdown of how each step of a numerical modeling tool (i.e., pre-processor, analysis, and post-processor tools) can assist in minimizing the overall structural analysis time required to obtain performance-based results.
- Insight on fragility curve: how to obtain, what it represents, and its practical uses.
- Advances required for an effect usage of performance-based earthquake engineering and nonlinear analysis methods in industry projects.

This presentation will greatly broaden the audience’s knowledge on the steps and challenges of using nonlinear numerical models for performance-based analyses. They will also serve as a guidance on critical and effective nonlinear structural modeling, and statistical analysis of the calculated response. The audience will be able to readily implement the information provided by the take away points on a performance-based structural analysis on their current job or research project.

Rafael A. Salgado

Graduate Student
University of Toledo

Rafael A. Salgado is a Ph.D. student at the University of Toledo. He received his BSCE degree in 2015 from the Universidade Federal do Espírito Santo (Brazil). His research interests have included multi-hazard resiliency analysis adopting finite element analysis, nonlinear analysis, and dynamic analysis of reinforced concrete structures.

Presentation(s):

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337103-9 - Towards Computationally-Efficient Nonlinear Analysis Models for Performance-Based Earthquake Engineering of Reinforced Concrete Buildings



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