Performance-based probabilistic framework for seismic risk, resilience, and sustainability assessment of reinforced concrete structures

Anwar, Ghazanfar Ali; Dong, You; Zhai, Changhai

doi:10.1177/1369433219895363

Cited by 39 publications

(25 citation statements)

References 45 publications

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“…After a delay time d , the functionality of the damaged bridge can be recovered through post-event restoration activities in recovery time r . In this case, seismic resilience is associated with four attributes: robustness, rapidity, redundancy and resourcefulness (Anwar et al 2020). Considering these attributes together, the seismic resilience of the bridge system can be defined as:…”

Section: Seismic Resilience Methodsmentioning

confidence: 99%

Resilience-based seismic design optimization of highway RC bridges by response surface method and improved non-dominated sorting genetic algorithm

Chen

Song

et al. 2021

Bull Earthquake Eng

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In this study, a resilience-based multi-objective optimal seismic design method is proposed to maximize the seismic performance and minimize the material cost of highway reinforced concrete (RC) bridges. The size of the elastomeric bearings and cross-sectional arrangement of the RC pier are selected as the design parameters. To improve the accuracy and efficiency, the nonlinear time history analysis based on cloud analysis approach and response surface method are applied to obtain the seismic resilience during the seismic optimization process. The optimization problem is solved through an improved non-dominated sorting genetic algorithm (NSGA-II). Following, the proposed method is applied to a highway RC bridge, and the optimal design schemes are determined from the Pareto optimal solutions. The numerical results show that the resilience response surface model can be used to predict the seismic resilience of bridges. Moreover, the proposed method can minimize the material cost and maximize the seismic resilience by adjusting the damage grades of various bridge components.

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Section: Seismic Resilience Methodsmentioning

confidence: 99%

Resilience-based seismic design optimization of highway RC bridges by response surface method and improved non-dominated sorting genetic algorithm

Chen

Song

et al. 2021

Bull Earthquake Eng

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show abstract

“…After experienced a delay time , the functionality of the damaged bridge can be recovered through the post-event restoration activities in the recovery time . In this case, the seismic resilience is associated with four attributes: robustness, rapidity, redundancy and resourcefulness (Anwar 2020). Considering all attributes together, the seismic resilience of an individual bridge can be defined as:…”

Section: Seismic Resilience Methodsmentioning

confidence: 99%

Resilience-based Seismic Design Optimization of typical Highway RC Bridges by Response Surface Method and NSGA-II Algorithm

Chen

Song

et al. 2021

Preprint

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To maximize the seismic performance and minimize the material cost of the typical highway reinforced concrete (RC) bridges, a resilience-based multi-objective optimal seismic design method is proposed in this study. The size of elastomeric bearings and the cross-section arrangement of RC piers are chosen as the design parameters. To improve the accuracy and efficiency, the nonlinear time history analysis (NTHA) based cloud analysis approach is associated with the response surface method (RSM) to obtain the seismic resilience during the seismic optimization process. Moreover, the optimization problem is solved through an improved version of non-dominated sorting genetic algorithm (NSGA-II) algorithm. Following, the proposed method is applied to a typical highway RC bridge, and the optimal design schemes are determined from the Pareto optimal solutions. The results show that the resilience response surface model can be used to accurately predict the seismic resilience of bridges. The proposed method can adjust the damage grades of various components by considering the contribution of various components, entailing the minimization of material cost and the maximization of seismic resilience.

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“…Seismic evaluation and fragility analysis of various RC structures have been the main objective of many studies, yet the inclusion of vertical ground shaking has not been usually considered (Anwar et al, 2020; Boushehri et al, 2020b; Dong et al, 2020; Fang et al, 2018; Farsangi et al, 2014; Hashmi and Madan, 2020; Sfahani et al, 2015; Tafti et al, 2020). Besides, studies have been done on the site response analysis and soil-structure interactions, yet mostly the horizontal excitations have been taken into account (Boushehri et al, 2020a; Zogh et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

The effect of vertical near-field ground motions on the collapse risk of high-rise reinforced concrete frame-core wall structures

Taslimi

Tehranizadeh

2021

Advances in Structural Engineering

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According to the observations of past earthquakes, the vertical ground motions have had a striking influence on the engineering structures, especially reinforced concrete ones. Nevertheless, the number of studies on their aftermath is insufficient, and despite some endeavors done by researchers, there is still a shortage of knowledge about the inclusion of vertical excitation on the seismic performance and the collapse probability of RC buildings. Hence, the variation in the collapse risk of three high-rise RC frame-core wall structures when they undergo bi-directional ground motions is discussed. In this paper, incremental dynamic analyses are carried out under two circumstances, including the horizontal (H) and the combined horizontal and vertical (H+V) earthquakes, and the seismic fragility curves are derived. The inter-story drift ratio corresponding to the onset of collapse has also been defined. The buildings collapse risk under the two circumstances is obtained from the risk integral. Results indicate that in the H+V state, structures meet the collapse criteria for lower intensity measures. Thus, the collapse risk increases as the structures are subjected to bi-directional seismic loads, and the consideration of this effect leads to a more accurate evaluation of buildings seismic performance.

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Performance-based probabilistic framework for seismic risk, resilience, and sustainability assessment of reinforced concrete structures

Cited by 39 publications

References 45 publications

Resilience-based seismic design optimization of highway RC bridges by response surface method and improved non-dominated sorting genetic algorithm

Resilience-based seismic design optimization of highway RC bridges by response surface method and improved non-dominated sorting genetic algorithm

Resilience-based Seismic Design Optimization of typical Highway RC Bridges by Response Surface Method and NSGA-II Algorithm

The effect of vertical near-field ground motions on the collapse risk of high-rise reinforced concrete frame-core wall structures

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