In-structure response spectra considering nonlinearity of RCC structures: Experiments and analysis

Kothari, P.; Parulekar, Y. M.; Reddy, G. R.; Gopalakrishnan, N.

doi:10.1016/j.nucengdes.2017.07.009

Cited by 10 publications

(2 citation statements)

References 10 publications

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“…As many contributions demonstrated in literature, see, among others, in (5) - (6), seismic behaviour of support structures in major-hazard industrial/nuclear plants is therefore of paramount importance. Besides, recent studies ( 7) -( 8) - (9), focused on the analysis and design of industrial and nuclear plant substructures equipped with process components such as pipes, tanks, etc. It is noteworthy that whilst several aspects in terms of design and analysis are still unresolved, codecompliant methods demonstrated to result in very poor predictions and often dated and inadequate.…”

Section: Background and Motivationmentioning

confidence: 99%

Seismic performance of an industrial multi-storey frame structure with process equipment subjected to shake table testing

Butenweg

Bursi

Paolacci

et al. 2021

Engineering Structures

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Section: Background and Motivationmentioning

confidence: 99%

Seismic performance of an industrial multi-storey frame structure with process equipment subjected to shake table testing

Butenweg

Bursi

Paolacci

et al. 2021

Engineering Structures

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“…Consequently, existing, non-seismically designed reinforced concrete supporting structures may develop extensive damage due to lack of required capacity against seismic actions and even fail before secondary systems (Kothari et al 2017). Hence, when evaluating the risk of an LNG plant, fragility curves regarding the supporting structures are necessary.…”

Section: Figure 1 Overview Of Refrigerated Liquefied Gas (Rlg) Plantmentioning

confidence: 99%

Seismic fragility analysis of LNG sub-plant accounting for component dynamic interaction

Farhan

Bousias

2020

Bull Earthquake Eng

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Earthquakes can cause significant damage to Liquefied Gas terminals, a critical part of lifeline facilities of energy supply networks, failure of which may lead to loss of hazardous material, explosion, environmental contamination, loss of functionality and disruption of business. To date, seismic risk analysis of such facilities mainly focuses at component level, with the inherent dynamic interaction between the supporting structure and non-structural components not receiving the merited attention.In the present study, the seismic performance of an actual facility comprising of a piping system and a supporting structure is analyzed through a detailed 3D finite element model in the nonlinear regime, both as coupled and decoupled cases. Plastic strains are used as Engineering Demand Parameters (EDP) to define leakage limit state for pipes. Since the reinforced concrete (RC) pipe rack supporting structure is designed for low seismic loads, shear is recognized as the predominant failure mode. The same components are then analyzed in unison, considering coupling due to dynamic interaction. Fragility functions are evaluated for both cases using Multiple Stripe Analysis. A set of 250 strong ground motions artificially generated using the Specific Barrier Model, are employed for developing fragility curves. They are expressed with peak ground acceleration (PGA) as an intensity measure. Statistical estimation of the parameters of fragility functions are based on maximum likelihood method. It is inferred that in the decoupled case, pipelines show higher vulnerability at lower PGA, at higher PGA pipe rack can fail abruptly resulting in total failure of the system. Moreover, in coupled case the fragility of the pipes and RC rack changes substantially because of the piping system boundary conditions. Thus, concluding that the risk estimation could be erroneous if dynamic interaction is neglected.

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Assessment of hysteretic damping in reinforced concrete structures using local hinge characteristics

Shekhar

Parulekar

Nagender

et al. 2020

Bull Earthquake Eng

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In-structure response spectra considering nonlinearity of RCC structures: Experiments and analysis

Cited by 10 publications

References 10 publications

Seismic performance of an industrial multi-storey frame structure with process equipment subjected to shake table testing

Seismic performance of an industrial multi-storey frame structure with process equipment subjected to shake table testing

Seismic fragility analysis of LNG sub-plant accounting for component dynamic interaction

Assessment of hysteretic damping in reinforced concrete structures using local hinge characteristics

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