Seismic fragility analysis of a typical Indian PHWR containment: Comparison of fragility models

Mandal, Tushar Kanti; Ghosh, Siddhartha; Pujari, Nikil N.

doi:10.1016/j.strusafe.2015.08.003

Cited by 65 publications

(15 citation statements)

References 16 publications

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“…The horizontal axis of an IDA curve is the damage measure (DM) or engineering demand parameter (EDP), which is used to reflect the response of a structure under scaling process, and the vertical axis of the curve is the intensity measure (IM) reflecting the intensity level of ground motion. The peak ground acceleration (PGA), spectral acceleration in the first mode with 5% damping ratio Sa(T 1 , 5%) and peak ground velocity (PGV) are usually selected as IM in many researches. The damage measure is required to be able to accurately reflect the structural nonlinear behavior and the displacement; strain energy and damage dissipation energy are good choices for this purpose.…”

Section: Dynamic Analysis Of An Intact Containment Structure Under Mamentioning

confidence: 99%

“…As for the IM, both PGA and Sa can produce a lower dispersion within the range of intensity variation. Although the Sa is widely used in seismic safety assessment of individual buildings, the Sa cannot be a good choice for IM in the seismic assessment of a nuclear power plant system with multiple components having their fundamental periods of vibration in a wide range . So the PGA, which is independent of structural properties, is selected as IM for containment structures in this study.…”

Section: Dynamic Analysis Of An Intact Containment Structure Under Mamentioning

confidence: 99%

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Seismic capacity assessment of postmainshock damaged containment structures using nonlinear incremental dynamic analysis

Bao

Zhai

Zhang

et al. 2020

Structural Design Tall Build

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This paper investigates the structural performance and seismic capacity of the postmainshock damaged containment structure through the incremental dynamic analysis (IDA). To evaluate the seismic capacity with minimum uncertainty, the damage measure (DM) and intensity measure (IM) for IDA curves are selected in term of the coefficient of variation. The IDA using mainshock records is implemented to examine the seismic damage process of a containment structure and determine key damage states. The static cyclic loading analysis and aftershock IDA are also conducted on mainshock-damaged containment structures to investigate the effect of initial damage states on the dynamic characteristics of structures. Finally, based on IDA results, limit states of a containment structure are defined using a generalized multidimensional limit-state function that allows considering the dependence between the mainshock-damaged level and residual seismic capacity. These proposed bidimensional limit-state functions can be used in the fragility analysis and risk assessment of containment structures under mainshock-aftershock, which can improve the accuracy of seismic assessment. K E Y W O R D Scontainment structure, incremental dynamic analysis, limit state, postmainshock damage state, seismic capacity

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Section: Dynamic Analysis Of An Intact Containment Structure Under Mamentioning

confidence: 99%

Section: Dynamic Analysis Of An Intact Containment Structure Under Mamentioning

confidence: 99%

Seismic capacity assessment of postmainshock damaged containment structures using nonlinear incremental dynamic analysis

Bao

Zhai

Zhang

et al. 2020

Structural Design Tall Build

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“…A single value is convenient for decision-making and preferable to an interval or information expressed by a density function. Further recipes for dealing with epistemic uncertainties related to fragility functions were proposed by other authors (Celik, Ellingwood 2010;Mandal et al 2015). However, a unified and commonly recognised approach to handling epistemic uncertainties in structural fragilities has not been developed to date.…”

Section: Vulnerability Of Roadside Object To Thermal Damagementioning

confidence: 99%

The Risk to Structures Built Near Roads and Rails Used for Moving Hazardous Materials

Vaidogas

Kisežauskienė

Girnienė

2016

Journal of Civil Engineering and Management

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An assessment of parts of transportation infrastructure in terms of hazards to roadside territory is considered. It is suggested to assess individual segments of road and railway network by estimating risks posed by potential fires and explosions on road and rail. Boiling liquid expanding vapour explosion of tanker trucks and tank cars is identified as the most hazardous and likely high consequence accident in the land transport. It is proposed to express the risk to built roadside objects by means of an annual damage frequency. This frequency is considered to be a specific physical characteristic of the road or railway segment under analysis. It is shown that estimating the damage frequency requires assessing effects of a potential explosion on road or rail and developing a fragility function for the roadside object analysed as a potential target. An example case study is presented. It considers a potential thermal damage to a reservoir (stationary tank) built in the vicinity of a highway. The damage can be caused by an explosion of a propane tanker truck. Results of the risk assessment are expressed in terms of probabilities of specific damage events.

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“…Following the 2011 Fukushima Daiichi nuclear accident in Japan, there is a worldwide interest in reducing uncertainties in seismic safety assessment of existing NPP. The current research emphasis is on developing robust methodology to re-evaluate the flood and seismic hazard and risk within the context of PSA (Ake et al, 2015;Mandal et al, 2016;Muta et al, 2016). Mandal et al (2016) report post Fukushima Daiichi research on seismic fragility analysis of Indian PHWR in operation since 1973.…”

Section: Introductionmentioning

confidence: 99%

“…The current research emphasis is on developing robust methodology to re-evaluate the flood and seismic hazard and risk within the context of PSA (Ake et al, 2015;Mandal et al, 2016;Muta et al, 2016). Mandal et al (2016) report post Fukushima Daiichi research on seismic fragility analysis of Indian PHWR in operation since 1973. Different approaches are compared to compute the seismic fragility curves including incremental dynamic analysis (IDA) with detailed nonlinear FE model using displacement based failure limit states.…”

Section: Introductionmentioning

confidence: 99%

Probabilistic seismic safety assessment of a CANDU 6 nuclear power plant including ambient vibration tests: Case study

Nour

Cherfaoui

Gocevski

et al. 2016

Nuclear Engineering and Design

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Seismic fragility analysis of a typical Indian PHWR containment: Comparison of fragility models

Cited by 65 publications

References 16 publications

Seismic capacity assessment of postmainshock damaged containment structures using nonlinear incremental dynamic analysis

Seismic capacity assessment of postmainshock damaged containment structures using nonlinear incremental dynamic analysis

The Risk to Structures Built Near Roads and Rails Used for Moving Hazardous Materials

Probabilistic seismic safety assessment of a CANDU 6 nuclear power plant including ambient vibration tests: Case study

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