Seismic fragility assessment of existing reinforced concrete buildings in Patna, India

Kumar, Pratyush; Samanta, Avik

doi:10.1016/j.istruc.2020.05.036

Cited by 18 publications

(5 citation statements)

References 25 publications

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“…Fu and Liu [30] investigated the effect of displacement amplitude and load sequence on adjusting the Park-Ang model. Other researchers used the drift ratio value [28], [31] or spectral displacement [15], [32] as an indicator to express damage states.…”

Section: Determining Damage State Of Non-engineered Structuresmentioning

confidence: 99%

Damage State of Non-Engineered Residential Buildings Owing to Earthquakes: A Case Study in Pacitan Regency, Indonesia

Kristiawan,

Safarizki,

Purwanto

et al. 2024

Civil and Environmental Engineering

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The Pacitan Regency of Indonesia is located in an area of high seismic activities. Regrettably, field surveys held in Pacitan Regency, Indonesia have revealed the prevalence of low-income housing structures that do not meet the engineering standards and are vulnerable to damage during earthquakes. The seismic evaluation of these buildings is urgently required. This study proposes realistic damage state limit values for the seismic damage evaluation of non-engineered buildings. For this purpose, an incremental dynamic analysis was conducted on a sample of non-engineered buildings in Pacitan to evaluate their probable seismic damage. As a result, curves showing the dynamic pushover responses of buildings to various input earthquakes were plotted. These curves were then summarized as three-linear curves, providing a single value for the average response of the structure. Based on this simplified curve, a more realistic damage-state limit for non-engineered structures are proposed. The damage levels of slight (DS1), moderate (DS2), extensive (DS3), and complete (DS4) were determined using the drift ratio at the linear elastic limit, midway point between the linear elastic and yield limits, yield state, and 80% rupture limit, respectively.

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Section: Determining Damage State Of Non-engineered Structuresmentioning

confidence: 99%

Damage State of Non-Engineered Residential Buildings Owing to Earthquakes: A Case Study in Pacitan Regency, Indonesia

Kristiawan,

Safarizki,

Purwanto

et al. 2024

Civil and Environmental Engineering

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“…The investigation conducted by Liang et al [11] centered on the assessment of seismic fragility in a High Arch Dam-Foundation System. Kumar and Samanta [12] study aimed to ascertain specific geographical susceptibilities by assessing the seismic fragility of preexisting reinforced concrete structures in Patna, India. The significance of intensity measures in ensuring the accuracy of seismic fragilities was underscored by Ciano et al [13].…”

Section: Introductionmentioning

confidence: 99%

Seismic fragility assessment of embankment: A displacement-based approach using dynamic finite element model analysis

Ahmed,

Alel,

Kadir

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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The assessment of seismic fragility of highway embankments is a key component of seismic risk modeling for traffic infrastructure. This study examines the seismic fragility of an embankment using advanced finite element dynamic analysis, contrasting findings with prior research to validate results. Based on established methodologies, an incremental dynamic analysis (IDA) was executed, with the Probabilistic Seismic Demand Analysis (PSDA) for the development of fragility curves. A comparative study was conducted between two modeling methods; one employing finite difference (FD) method and other employing finite element (FE)method. The analysis revealed that, selection of inputs like the nature of earthquake time history and number of records selected along with the analysis method influences the seismic fragility assessment of embankments. The choice between finite difference and finite element methods can yield differing results, with FD, being grid-based, can face challenges with complex geometries and boundary conditions, on the other hand, FE’s mesh-based approach offers flexibility in modeling intricate domains, handles complex boundary conditions more adeptly, and provides a more continuous representation of material behavior. A distinct dynamic stability test based on Newmark sliding block principles showed the embankment slope’s inherent resilience, with no permanent deformation, underscoring the requirement for further research.

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“…Sarno et al [17,18] conducted a seismic fragility analysis considering the influence of reinforcement corrosion on existing RC frame structures. Kumar et al [19,20] considered the uncertainty in aleatory and epistemic sources, and evaluated the seismic fragility of existing low-, medium-, and high-rise RC frame structures. Pitilakis et al [21] proposed a modular approach for a large-scale seismic fragility assessment of existing RC frame structures, including soil-structure interactions and site amplification effects.…”

Section: Introductionmentioning

confidence: 99%

Seismic Fragility Analysis of Existing RC Frame Structures Strengthened with the External Self-Centering Substructure

Liu,

Zhang,

Liu

et al. 2023

Buildings

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Based on a practical engineering case of seismic strengthening, this paper used the enlarging cross-section method and an external self-centering substructure to improve the seismic performance and seismic resilience of existing frame structures. Among them, the external self-centering substructure included setting a self-centering precast beam and diagonal braces. Utilizing the OpenSees finite element platform, a seismic fragility analysis was carried out to compare the improvements in seismic performance and seismic resilience before and after strengthening. The analysis results show that the proposed modelling method could be simulated satisfactorily. The maximum inter-story drift and the residual inter-story drift of the strengthened frame structures decreased significantly under the same peak ground acceleration. The peak ground acceleration of the strengthened frame structures significantly increased under different performance levels. Additionally, the exceedance probability of the strengthened frame structures was obviously reduced, which reflected that the seismic performance and seismic resilience of the strengthened frame structures were significantly improved.

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Seismic fragility assessment of existing reinforced concrete buildings in Patna, India

Cited by 18 publications

References 25 publications

Damage State of Non-Engineered Residential Buildings Owing to Earthquakes: A Case Study in Pacitan Regency, Indonesia

Damage State of Non-Engineered Residential Buildings Owing to Earthquakes: A Case Study in Pacitan Regency, Indonesia

Seismic fragility assessment of embankment: A displacement-based approach using dynamic finite element model analysis

Seismic Fragility Analysis of Existing RC Frame Structures Strengthened with the External Self-Centering Substructure

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