Seismic Vulnerability of Irregular Reinforced Concrete Buildings Considering the Soil-structure Interaction

El Janous, S.; El Ghoulbzouri, A.

doi:10.5829/ije.2024.37.01a.10

Cited by 2 publications

(3 citation statements)

References 19 publications

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“…Utilizing the mean and standard deviation of IM values, the fragility curve was derived. This fragility curve forms a cumulative distribution function for a lognormal distribution, expressed by Equation (2).…”

Section: Fragility Curvesmentioning

confidence: 99%

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Seismic Damage Probability Assessment of Existing Reinforced Concrete School Buildings in Afghanistan

Sharafi,

Saito

2024

Buildings

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Existing Reinforced Concrete School buildings with low earthquake resistance may suffer structural failure or severe damage in a catastrophic seismic event. Ascertaining earthquake resistance in existing school buildings is vital to confirming the safety of students, teachers, and all school members. Reinforced concrete (RC) has been used significantly for numerous years as the primary material due to its easy access and low cost-effectiveness in construction. The current research focused on analyzing the existing RC school buildings designed and constructed in various regions of Afghanistan over the last three decades. Seismic fragility curves, which are generated from incremental dynamic analysis (IDA), have been used to evaluate the damage probability of RC school buildings against earthquake ground motions. In this investigation, 34 RC school buildings were selected from an extensive database and subsequently classified as either A-type or B-type based on specific criteria, including design details and construction year. Following this classification, an assessment of the seismic damage probability for these buildings was conducted using probabilistic models based on IDA curves. The results indicate that A-type school buildings with newer construction are less prone to damage compared to B-type school buildings, showing improved resilience. Especially the B-type buildings in seismic Zone-I are found to be highly vulnerable under the maximum considered earthquake scenarios.

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Section: Fragility Curvesmentioning

confidence: 99%

“…The seismic vulnerability of existing RC buildings has been widely discussed in the literature [2][3][4][5][6]. In recent years, Carlos Gonzalez et al [7] conducted a research methodology aimed at reducing risk and enhancing the resilience of school buildings.…”

Section: Introductionmentioning

confidence: 99%

Seismic Damage Probability Assessment of Existing Reinforced Concrete School Buildings in Afghanistan

Sharafi,

Saito

2024

Buildings

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“…For ensuring the safety and earthquake resilience of non-regular RC buildings, it is important to conduct a thorough seismic risk evaluation considering both site selection and geometric irregularity. Proper consideration of these issues during design and strengthening stages will result in safer structures and more effective mitigation measures [20]. According to some studies, the flexible base condition affects the building's response differently than the fixed base condition, reducing the structure's stiffness and altering the response spectrum [21].…”

Section: Introductionmentioning

confidence: 99%

Response Reduction Factor for Structures with Significant Irregularities on Different Soil Stratum

Elsadany,

Fayed,

Sorour

et al. 2024

Civ Eng J

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The ability of a structure to dissipate energy through inelastic behavior is reflected in the response reduction factor (R), which is influenced by redundancy, ductility, and overstrength. Accurate determination of R is crucial for seismic design. This study focuses on determining the response factor for reinforced concrete (RC) structures with various irregularities. Non-linear static pushover analysis using SAP2000 was employed for numerical simulations to assess the impact of soil-structure interaction (SSI). The analysis included elevational and in-plan irregularities, revealing that buildings with irregular vertical geometries have lower inelastic seismic capacities compared to regular buildings. Consequently, R should be reduced by 15–40% from the ECP 2020 standard before the design phase for such structures. Irregularity was found to have a significant impact on weak soil conditions (C), leading to a reduction in R of 20.3% and 13.1% for fixed and isolated supports, respectively, on loose soil. Additionally, stiffer base soils were associated with higher R values for the same structure. Doi: 10.28991/CEJ-2024-010-03-07 Full Text: PDF

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Seismic Vulnerability of Irregular Reinforced Concrete Buildings Considering the Soil-structure Interaction

Cited by 2 publications

References 19 publications

Seismic Damage Probability Assessment of Existing Reinforced Concrete School Buildings in Afghanistan

Seismic Damage Probability Assessment of Existing Reinforced Concrete School Buildings in Afghanistan

Response Reduction Factor for Structures with Significant Irregularities on Different Soil Stratum

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