Probabilistic and deterministic soil structure interaction analysis including ground motion incoherency effects

Elkhoraibi, Tarek; Hashemi, Alidad; Ostadan, Farhang

doi:10.1016/j.nucengdes.2013.08.036

Cited by 8 publications

(6 citation statements)

References 3 publications

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“…where f max is the highest frequency of seismic vibration; V s is the shear wave velocity; and β is a coefficient between 1 5 − 1 12 .…”

Section: Site Conditionsmentioning

confidence: 99%

“…The influence of soil-structure interaction (SSI) should be considered in the seismic response analysis of a nuclear power plant structure [1][2][3]. The effect on the overall structural response motions, in the case of two structures in close proximity, is also found to be secondary in studies reported in Lucoand Contesse, Wong and Luco, and Ostadan et al [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the Influence of Structure–Soil–Structure Interaction on the Seismic Response for Nuclear Power Plant ASTS

Chen

Pan

2022

Energies

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After the Fukushima nuclear accident in Japan, whether the structural safety of the nuclear power plant (NPP) can be guaranteed under an earthquake has been of wide concern. Automatic seismic trip systems (ASTS) have been deployed in NPPs. There are generally two units or more double units on the one NPP site, and the vibration energy of the structure can certainly affect its adjacent structures through the soil, and there is energy transfer and conversion between adjacent structures. At present, the distance between two reactors of NPPs of different reactor types is generally 100–200 m (this distance is referring to the distance between the centers of two reactors, which is slightly different for different reactor types). In the past, seismic instruments were used in the ASTS and the setting of shutdown threshold, so the impact of only one unit was considered in the structural analysis of NPPs, and the interaction of two reactors through site conditions was not considered. In addition, as the site conditions of NPPs become more and more complex, it is necessary to consider the impact of one reactor structure on another reactor structure through the soil on the same site under an earthquake. In order to analyze the influence of structure–soil–structure interaction (SSSI), a three-dimensional refined finite element model of NPPs is established in this paper. The soil–structure interaction (SSI) is considered by using viscoelastic boundary. The seismic responses of different positions of the raft foundation and NPP structure, under the conditions of considering SSI effect (one reactor) and SSSI effect (two reactors), are compared. The influence of SSSI effect on the seismic responses of the raft foundation and NPP structure is revealed. It is proposed that SSSI effect should be reasonably considered according to the site conditions for the structural analysis of NPPs for the NPP ASTS.

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“…where f max is the highest frequency of seismic vibration; V s is the shear wave velocity; and β is a coefficient between 1 5 − 1 12 .…”

Section: Site Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of the Influence of Structure–Soil–Structure Interaction on the Seismic Response for Nuclear Power Plant ASTS

Chen

Pan

2022

Energies

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“…Fill soils are usually placed on the turbine island side because the land is either reclaimed, or to make space for tunnels and balance of plant. Nuclear and turbine islands are not generally founded on sites with considerable soil deposits, although some engineers and scientists use soil sites for their studies [19][20][21][22][23].…”

Section: Typical Nuclear Power Plantsmentioning

confidence: 99%

Simplified Groundwater Flow at Nuclear Power Plants

Yee

Kim

2021

Curr. Appl. Sci. Technol.

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As a result of the Fukushima Daiichi nuclear power plant disaster, significant amounts of radioactive materials have been introduced into the environment. Local and international organizations continue to monitor the situation and its effect on aquatic ecosystems as well as on human health. One of the many concerns after such an accident is the civil and construction work required to address such issues; however, multiple studies tend to consider nuclear power plant sites as being founded on soil when in reality such installations are founded on rock. Using real nuclear power plant structural geometries and field data, 2-D numerical simulations were conducted to estimate the amount of groundwater flow that could be expected. The results show the amount of groundwater flux to range from 0.07 to 46 m2/day, which from an engineering perspective is not that large. Because of this, maintenance and environmental safety workers could expect some groundwater intrusion when their excavations reach the rock boundary.

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“…This method consists of modifying the seismic motion at the foundation base to account for the ground motion incoherency via a simplified approach. Moreover, this latter can be easily implemented in some commercial software without performing the exhaustive soilstructure interaction procedure available in the SASSI (System for Analysis of Soil Structure Interactions) computer program (EPRI, 2007;El Khoraibi et al, 2014). EPRI (2006) develops an equivalent method (ITF) to the integrated approach in SASSI to consider the seismic wave incoherency.…”

Section: Frs For the Seismic Design Workmentioning

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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Probabilistic and deterministic soil structure interaction analysis including ground motion incoherency effects

Cited by 8 publications

References 3 publications

Analysis of the Influence of Structure–Soil–Structure Interaction on the Seismic Response for Nuclear Power Plant ASTS

Analysis of the Influence of Structure–Soil–Structure Interaction on the Seismic Response for Nuclear Power Plant ASTS

Simplified Groundwater Flow at Nuclear Power Plants

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

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