Method to Improve Seismic Performance of RC Moment-Resisting Frames Using Geometric Optimization

Arroyo, Orlando; Prieto, Víctor A Holguín; Gutiérrez, Sergio

doi:10.1061/(asce)cp.1943-5487.0000529

Cited by 4 publications

(2 citation statements)

References 13 publications

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“…Several problems involving dynamic loads in structural engineering have been solved using eigenfrequency optimization, such as maximizing the strength of RC column joints [28] and vibration reduction in trusses [29]. Additionally, this approach was used to optimize column dimensions using a surrogate membrane model of reinforced concrete moment frames, increasing the structure overstrength and ductility [30]. e performance of a building during an earthquake seems to be greatly affected by the smallest natural frequencies of the structure.…”

Section: Eigenfrequency Optimization Methods For the Design Of Steel Mmentioning

confidence: 99%

A Method to Improve the Seismic Performance of Steel Moment Resisting Frames Based on Eigenfrequency Optimization

Arroyo

Osorio

Vargas

2019

Advances in Civil Engineering

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Steel moment resisting frames are a structural system used throughout the world, mainly for their ductility and the speed and ease of their construction. These buildings are usually designed per procedures based on seismic design codes, seeking to minimize the total cost of the building. To aid in better building designs, researchers have proposed different methodologies, which have been proven to be effective. However, their practical use has been limited by their low computational efficiency and their difficulty to implement by practicing engineers. This article proposes a method to improve the seismic performance of steel moment resisting frame buildings based on eigenfrequency optimization. The main advantage of the proposed method is its computational efficiency and that it is simple to implement. The method is demonstrated for a four-story and an eight-story building, whose seismic performance is compared to traditional building designs using nonlinear analyses and seismic fragility functions. The results show that the seismic performance improves significantly with the proposed method with respect to that of traditionally designed buildings, reducing their seismic fragility and increasing their overstrength. These findings and the computational efficiency of the method suggest that it is a viable alternative for use within engineering practice.

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Section: Eigenfrequency Optimization Methods For the Design Of Steel Mmentioning

confidence: 99%

A Method to Improve the Seismic Performance of Steel Moment Resisting Frames Based on Eigenfrequency Optimization

Arroyo

Osorio

Vargas

2019

Advances in Civil Engineering

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“…Due to the prevalence of RCF, researchers have used different approaches to propose design procedures to achieve cost-competitive seismic designs that exceed code minimum performance. One approach is structural optimization (Arroyo and Gutie´rrez, 2017;Arroyo et al, 2016;Bai et al, 2016;Khatibinia et al, 2013;Li et al, 2010aLi et al, , 2010b, in which the optimal configuration of structural members is determined subjected to different constraints. Another approach is performance-based design (PBD; Fragiadakis and Papadrakakis, 2008;Hajirasouliha et al, 2012;Sinkovic´et al, 2016;Zameeruddin and Sangle, 2016;Zou et al, 2007), which finds a framework for its application in FEMA P-58 (Haselton et al, 2018); in PBD, buildings are designed to meet certain measurable seismic performance goals.…”

Section: Introductionmentioning

confidence: 99%

Practitioner-friendly design method to improve the seismic performance of RC frame buildings

2021

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Reinforced concrete (RC) frame buildings are a widely used structural system around the world. These buildings are customarily designed through standard code-based procedures, which are well-suited to the workflow of design offices. However, these procedures typically do not aim for or achieve seismic performance higher than code minimum objectives. This article proposes a practical design method that improves the seismic performance of bare RC frame buildings, using only information available from elastic structural analysis conducted in standard code-based design. Four buildings were designed using the proposed method and the prescriptive approach of design codes, and their seismic performance is evaluated using three-dimensional nonlinear (fiber) models. The findings show that the seismic performance is improved with the proposed method, with reductions in the collapse fragility, higher deformation capacity, and greater overstrength. Furthermore, an economic analysis for a six-story building shows that these improvements come with only a 2% increase in the material bill, suggesting that the proposed method is compatible with current project budgets as well as design workflow. The authors also provide mathematical justification of the method.

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A seismic optimization procedure for reinforced concrete framed buildings based on eigenfrequency optimization

Arroyo

Gutiérrez

2016

Engineering Optimization

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Method to Improve Seismic Performance of RC Moment-Resisting Frames Using Geometric Optimization

Cited by 4 publications

References 13 publications

A Method to Improve the Seismic Performance of Steel Moment Resisting Frames Based on Eigenfrequency Optimization

A Method to Improve the Seismic Performance of Steel Moment Resisting Frames Based on Eigenfrequency Optimization

Practitioner-friendly design method to improve the seismic performance of RC frame buildings

A seismic optimization procedure for reinforced concrete framed buildings based on eigenfrequency optimization

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