Seismic soil–structure interaction analysis of a nuclear power plant building founded on soil and in degraded concrete stiffness condition

Farahani, Reza V.; Dessalegn, Tewodros; Vaidya, Nishikant R.; Bazán-Zurita, Enrique

doi:10.1016/j.nucengdes.2015.12.002

Cited by 12 publications

(5 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(2019) incorporated seismic isolation into AP1000 NPPs to alleviate seismic damage that may normally occur in traditional NPPs. Farahani Reza et al . (2016) developed a 3D FE model of a NPP building situated on soil.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear dynamic analysis of soil-pile interactions of nuclear power plants with nonlithological foundation

Sui

Wang²,

2023

View full text Add to dashboard Cite

PurposeThe dynamic response of the nuclear power plants (NPPs) with pile foundation reinforcement have not yet been systemically investigated in detail. Thus, there is an urgent need to improve evaluation methods for nonlithological foundation reinforcements, as this issue is bound to become an unavoidable task.Design/methodology/approachA nonlinear seismic wave input method is adopted to consider both a nonlinear viscoelastic artificial boundary and the nonlinear properties of the overburden layer soil. Subsequently, the effects of certain vital parameters on the structural response are analyzed.FindingsA suitable range for the size of the overburden foundation is suggested. Then, when piles are used to reinforce the overburden foundation, the peak frequencies in the floor response spectra (FRS) in the horizontal direction becomes higher (38%). Finally, the Poisson ratio of the foundation soil has a significant influence on the FRS peak frequency in the vertical direction (reduce 35%–48%).Originality/valueThe quantifiable results are performed to demonstrate the seismic responses with respect to key design parameters, including foundational dimensions, the Poisson Ratio of the soil and the depth of the foundation. The results can help guide the development of seismic safety requirements for NPPs.

show abstract

Section: Introductionmentioning

confidence: 99%

Nonlinear dynamic analysis of soil-pile interactions of nuclear power plants with nonlithological foundation

Sui

Wang²,

2023

View full text Add to dashboard Cite

show abstract

“…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%

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

Chen

Pan

2022

Energies

View full text Add to dashboard Cite

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.

show abstract

“…The finite element analysis method has been considered as one of the most effective approaches for simulating seismic behaviors of civil infrastructures and nuclear structures [8]. The influence of soil structure interaction (SSI) should be considered in the seismic response analysis of nuclear power plant structure [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Seismic Response Sensitivity Analysis of the Raft Foundation NPP Reactor Building under Different Site Conditions

Pan

2022

Energies

View full text Add to dashboard Cite

The seismic sensors used for automatic seismic trip systems (ASTS) of nuclear power plants (NPPs) are mainly arranged on the raft foundation of reactor buildings; however, the arrangement principle of seismic sensors is not clear. In order to analyze the seismic response sensitivity of the raft foundation of reactor building in NPPs, this paper carried out the seismic response sensitivity research at seven positions on the raft foundation of a reactor building under three site conditions, with two sets of time histories as input. The results show that (1) the peak acceleration of the outer ring point of the raft foundation was the largest, and the peak acceleration of the center point was the smallest; (2) the peak value of the floor response spectrum at the outer ring point of the raft foundation was the largest, and the peak value at the center point was the smallest. In an earthquake, the outer ring point of the raft foundation of the reactor building was the most sensitive. It was suggested that the seismic sensors used for ASTS should be arranged at the outer ring of the raft foundation NPP reactor building, and the shutdown threshold shall be calculated according to site conditions and structural characteristics.

show abstract

Seismic soil–structure interaction analysis of a nuclear power plant building founded on soil and in degraded concrete stiffness condition

Cited by 12 publications

References 2 publications

Nonlinear dynamic analysis of soil-pile interactions of nuclear power plants with nonlithological foundation

Nonlinear dynamic analysis of soil-pile interactions of nuclear power plants with nonlithological foundation

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

Seismic Response Sensitivity Analysis of the Raft Foundation NPP Reactor Building under Different Site Conditions

Contact Info

Product

Resources

About