Application of 2DMPA method in develpoing fragility curves of plan-asymmetric structures

Birzhandi, Mohammad S.; Halabian, Amir M.

doi:10.1016/j.engstruct.2017.10.038

Cited by 10 publications

(3 citation statements)

References 25 publications

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“…Dolšek and Fajfar (2007) evaluated the IN2 method on a three-story asymmetric reinforced concrete structure and concluded that the method is viable in assessing plan-asymmetric buildings. Based on the 2DMPA method (Lin and Tsai 2007), Birzhandi and Halabian (2017) developed an approximate IDA procedure for plan-asymmetric structures, allowing for the hysteresis characteristics of structures such as pinching, strength loss, and stiffness deterioration. The authors later extended the method to take soil-structure interactions into account Halabian 2018, 2020).…”

Section: Introductionmentioning

confidence: 99%

Bidirectional energy-based pushover procedure as a fast approach to establish approximate IDA curves under biaxial seismic excitations: an evaluation for medium- and high-rise buildings

Soleimani

Moghadam

Aziminejad

2022

Bull Earthquake Eng

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This paper evaluates the accuracy of bidirectional energy-based pushover (BEP) procedure in predicting approximate incremental dynamic analysis (IDA) results for medium- and high-rise structures. BEP provides approximate IDA curves under the simultaneous effect of the two horizontal components of ground motions and is applicable to both symmetric- and asymmetric-plan buildings. The method has already proven useful in low-rise buildings, and this study aims to evaluate its suitability for mid- and high-rise structures. Six steel structures were considered in this evaluation in two groups of 9- and 20-story buildings, with each group consisting of a symmetric, a one-way asymmetric, and a two-way asymmetric-plan building. The assessment was performed for 22 pairs of far-field ground motion records. The results revealed that the accuracy of the method was satisfactory to produce approximate IDA curves for all structural models. The method had similar accuracy in the asymmetric models as it did in the symmetric models, although the accuracy showed a tendency to decrease as the height of the building increased. BEP also provided reasonable estimates of the demands in both 'flexible' and 'stiff sides' of the asymmetric buildings as well as the demands over the height of the buildings.

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Section: Introductionmentioning

confidence: 99%

Bidirectional energy-based pushover procedure as a fast approach to establish approximate IDA curves under biaxial seismic excitations: an evaluation for medium- and high-rise buildings

Soleimani

Moghadam

Aziminejad

2022

Bull Earthquake Eng

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show abstract

“…Dolšek and Fajfar (2007) evaluated the incremental N2 method on a three-story asymmetric reinforced concrete building and concluded that the method is viable in assessing plan-asymmetric buildings. Based on the 2DMPA method (Lin and Tsai 2007), Birzhandi and Halabian (2017) developed an approximate IDA procedure for plan-asymmetric structures, allowing for the hysteresis characteristics of structures such as pinching, strength loss, and stiffness deterioration. The authors later extended the method to take soil-structure interactions into account (2018,2020).…”

Section: Introductionmentioning

confidence: 99%

Bidirectional Energy-based Pushover Procedure as a Fast Approach to Establish Approximate IDA Curves under Biaxial Seismic Excitations: An Evaluation for Medium- and High-rise Buildings

Soleimani

Moghadam

Aziminejad

2021

Preprint

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Bidirectional energy-based pushover (BEP) procedure is expanded in this paper to predict approximate incremental dynamic analysis (IDA) results of medium- and high-rise structures. BEP is a unique approach in the sense that it provides approximate IDA curves under the simultaneous effect of two horizontal components of ground motions and is applicable to both symmetric- and asymmetric-plan buildings. The method has already proved to be useful in low-rise buildings, and this study aims to evaluate its suitability for mid- and high-rise structures. Six structural models were considered in this evaluation in two groups of 9- and 20-story buildings, with each group consisting of a symmetric, a one-way asymmetric, and a two-way asymmetric-plan building. The results revealed that the method was sufficiently accurate to provide approximate IDA curves for all structural models. The method had similar accuracy in the asymmetric models as it did in the symmetric models, although the accuracy slightly decreased as the height of the building increased. BEP also provided good estimates of the demands in both ‘flexible’ and ‘stiff sides’ of the asymmetric buildings as well as the demands over the height of the buildings.

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“…Their results show that an increase in the level of asymmetry in structure leads to an increase in potential of the progressive collapse at both sides of plan in the asymmetric structure. Birzhandi and Halabian (2017) presented an approximate method for the incremental dynamic analysis (IDA) and fragility curves of plan-asymmetric structures. Also Soleimani et al (2018), using a bidirectional energy-based pushover, proposed an approximate two-component IDA.…”

Section: Introductionmentioning

confidence: 99%

Probabilistic assessment of plan-asymmetric structures under the near-fault pulse-like events considering soil–structure interaction

Birzhandi

Halabian

2018

Advances in Structural Engineering

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This study aims to evaluate the torsional effects and soil-structure interaction simultaneously under near-fault pulse-like earthquakes in a probabilistic framework. Incremental dynamic analysis and fragility curves are employed for this goal. An eight-story R/C dual lateral load-resistant building consisting of shear walls and moment resisting frames is used. The median incremental dynamic analysis curves reported the maximum capacity for the symmetric structure in each foundation conditions. In addition, the capacity of structure will be increased when more shear wave velocity is assumed. Therefore, from this view, neglecting the soil-structure interaction will not be in the safe side. Fragility curves (using intensity measure directly) show that for different cases (except for very low shear wave velocity), more value of eccentricity leads to more probability of collapse. Moreover, the fragility curves show that (for each eccentricity), soil-structure interaction effect is significant only for the flexible base structure with the very low shear wave velocity (100 m/s) and more eccentricity value leads to less soil-structure interaction effects. Results show that the significant eccentricity value may lead to reduce the soil-structure interaction effect in the shear-wall structures under the near-fault events.

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Application of 2DMPA method in develpoing fragility curves of plan-asymmetric structures

Cited by 10 publications

References 25 publications

Bidirectional energy-based pushover procedure as a fast approach to establish approximate IDA curves under biaxial seismic excitations: an evaluation for medium- and high-rise buildings

Bidirectional energy-based pushover procedure as a fast approach to establish approximate IDA curves under biaxial seismic excitations: an evaluation for medium- and high-rise buildings

Bidirectional Energy-based Pushover Procedure as a Fast Approach to Establish Approximate IDA Curves under Biaxial Seismic Excitations: An Evaluation for Medium- and High-rise Buildings

Probabilistic assessment of plan-asymmetric structures under the near-fault pulse-like events considering soil–structure interaction

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