New Empirical Relationship Between Probabilistic and Deterministic Procedures Using a Genetic Algorithm

Naghizadehrokni, Mehran; Janalizadechoobbasti, Asskar

doi:10.1007/978-981-10-8016-6_13

Cited by 2 publications

(4 citation statements)

References 20 publications

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“…The can be calculated by similar to [23] method published in [25]. The result will be very close to those obtained by (4).…”

Section: Evaluation Of the Probability Of Liquefaction For Designsupporting

confidence: 81%

“…The correlation developed by Cetin et al [22] has been applied for calculation of the probability of liquefaction due to design basis earthquake. As an alternative to this correlation, correlation given in [25] has also be applied. Based on the calculations, a factor of safety to liquefaction ≳ 2.2 is proposed for the criterion of screening out the liquefaction from the design basis.…”

Section: Discussionmentioning

confidence: 99%

“…The cyclic resistance ratio given by (3) can be crosschecked by the method of [26,27] It should be mentioned that several correlations have been published for calculation of . For example, according to [25] the probability of liquefaction can also be calculated and the required condition ≤ 0.001 can be checked as follows:…”

Section: Evaluation Of the Probability Of Liquefaction For Designmentioning

confidence: 99%

“…The condition expressed by (6) is valid, if factor of safety is already ≈ 2.2. According to [25], the probability of liquefaction is less than 15%, and the liquefaction incidence is improbable, if the safety factor is over 1.15.…”

Section: Evaluation Of the Probability Of Liquefaction For Designmentioning

confidence: 99%

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Assessment of Adequate Margin to Liquefaction for Nuclear Power Plants

Katona

2018

Science and Technology of Nuclear Installations

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Design of nuclear power plant shall provide an adequate margin to protect items ultimately necessary to prevent an early large radioactive release in the case of earthquakes exceeding those considered in the design. An essential question is how large the margin should be to be accepted as adequate. In the practice, depending on the country regulation, a plant margin of at least 1.4 or 1.67 times the design basis peak ground acceleration is required to be demonstrated. The catastrophe at the Fukushima Daiichi Nuclear Power Plant revealed the fundamental experience that the plants designed in compliance with nuclear standards can survive the effects of the vibratory ground motion due to disastrous earthquake but may fail due to effects of phenomena accompanying or generated by the earthquakes. Liquefaction is one of those secondary effects of beyond-design basis earthquakes that should be investigated for NPPs at soil sites. However, the question has not been investigated up to now, whether a “margin earthquake”, vibratory effects of which the plant can withstand thanks to design margin, will not induce liquefaction at soil sites and will not result in loss of safety functions. In the paper, a procedure is proposed for calculation of the probability and margin to liquefaction. Use of the procedure is demonstrated on a case study with realistic site-plant parameters. Criteria for probability for screening and acceptable probabilistic margin to liquefaction are proposed. The possible building settlement due to margin earthquake is also assessed.

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“…The can be calculated by similar to [23] method published in [25]. The result will be very close to those obtained by (4).…”

Section: Evaluation Of the Probability Of Liquefaction For Designsupporting

confidence: 81%

Section: Discussionmentioning

confidence: 99%