Seismic retrofit of a reinforced concrete flat-slab structure: Part II — seismic fragility analysis

Hueste, Mary Beth D.; Bai, Jong-Wha

doi:10.1016/j.engstruct.2006.07.022

Cited by 39 publications

(26 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…, or (ii) by deriving the interstorey drift limits from the member‐level limits suggested in seismic codes (i.e. plastic rotation capacity of members) through a simplified analysis, such as pushover analysis . Obviously, in both the cases, the capacity limits must be updated properly to account for the retrofit, as done in Huste and Bai and Ramamoorthy et al .…”

Section: Introductionmentioning

confidence: 99%

“…These tools provide the probability of exceeding a specified limit state or failure condition, conditional to the strong-motion shaking severity, quantified by means of an appropriately selected intensity measure (IM). In this context, fragility curves are employed by Hueste and Bai [3] to investigate the effectiveness of retrofit techniques, such as addition of shear walls, column jacketing, and confinement of column plastic hinge regions by using externally bonded steel plates. In Ramamoorthy et al [4], the authors also assess the effect of column strengthening on the seismic vulnerability of RC frames designed for gravity loads only by comparing the fragility curves of a benchmark building before and after retrofit.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Probabilistic performance assessment of low‐ductility reinforced concrete frames retrofitted with dissipative braces

Freddi

Tubaldi

Ragni

et al. 2012

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

SUMMARY The paper illustrates a probabilistic methodology for assessing the vulnerability of existing reinforced concrete (RC) buildings with limited ductility capacity retrofitted by means of dissipative braces. The aim is to highlight the most important parameters controlling the capacity of these coupled systems and specific aspects concerning the response uncertainties. The proposed methodology is based on the use of local engineering demand parameters for monitoring the seismic response and on the development of component and system fragility curves before and after the retrofit. In the first part of the paper, the methodology is illustrated by highlighting its advantages with respect to the existing approaches. Then, its capability and effectiveness are tested by considering a benchmark two‐dimensional RC frame designed for gravity‐loads only. The frame is retrofitted by introducing elasto‐plastic dissipative braces designed for different levels of base shear capacity. The obtained results show the effectiveness of the methodology in describing the changes in the response and in the failure modalities before and after the retrofit, for different retrofit levels. Moreover, the retrofit effectiveness is evaluated by introducing proper synthetic parameters describing the fragility curves and by stressing the importance of employing local engineering demand parameters (EDPs) rather than global EDPs in the seismic risk evaluation of coupled systems consisting in low‐ductility RC frames and dissipative braces. Copyright © 2012 John Wiley & Sons, Ltd.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Probabilistic performance assessment of low‐ductility reinforced concrete frames retrofitted with dissipative braces

Freddi

Tubaldi

Ragni

et al. 2012

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

show abstract

“…Subsequently, the posterior likelihood P½ h i jO is evaluated using Eq. (9). In this evaluation, each simulation is assigned equal probability (i.e.…”

Section: Example Applicationmentioning

confidence: 99%

“…A large variety of fragility and vulnerability models have been proposed in the literature (e.g. [1][2][3][4][5][6][7][8][9][10][11]). In these models, the intensity of the ground motion is typically represented in terms of instrumental measures (e.g.…”

Section: Introductionmentioning

confidence: 99%

Empirical seismic fragility assessment with explicit modeling of spatial ground motion variability

Yazgan

2015

Engineering Structures

View full text Add to dashboard Cite

“…The horizontal story-drift-angle limit is determined by the following method (Erberik and Elnashai, 2004;Hueste and Bai, 2007): draw the relation curve between story-drift-angles and story shear for each story based on the pushover analysis, and mark the damage state of members on the curve; then determine the limit value of horizontal story-drift-angles for different performance level according to the damage state of each story and choose the minimum value as horizontal story-drift-angle limit of global structural performance. From the results, it can be found that the bottom story-drift-angle is the minimum.…”

Section: Limit Values Of Quantitative Indexesmentioning

confidence: 99%

Seismic fragility analysis of composite frame structure based on performance

Liu

2010

Earthq Sci

View full text Add to dashboard Cite

Steel-concrete composite structures that share the advantages of both steel structure and concrete structure have been developed rapidly and used widely. It has been a popular structure in high-rise buildings in recent years. Although more and more composite structures have been used in earthquake area, only a few literatures about fragility analysis of this type of structure are available. In this paper, a fragility analysis method based on performance is proposed, in which both the uncertainty due to variability in structures and ground motion are considered. Seismic fragility analysis is performed for a 15-story composite beam-concrete-filled square steel tube column frame by the proposed method. The top-drift-angle and the story-drift-angle are used as quantitative indexes to define the four different performance levels. Then seismic demand probability analysis is carried out and fragility curves are derived to assess the seismic performance of this type of structure.

show abstract

Seismic retrofit of a reinforced concrete flat-slab structure: Part II — seismic fragility analysis

Cited by 39 publications

References 9 publications

Probabilistic performance assessment of low‐ductility reinforced concrete frames retrofitted with dissipative braces

Probabilistic performance assessment of low‐ductility reinforced concrete frames retrofitted with dissipative braces

Empirical seismic fragility assessment with explicit modeling of spatial ground motion variability

Seismic fragility analysis of composite frame structure based on performance

Contact Info

Product

Resources

About