Seismic response analysis of soil–structure interactive system using a coupled three-dimensional FE–IE method

Ryu, Jeong-Soo; Seo, Choon-Gyo; Kim, Jae-Min; Yun, Chung Bang

doi:10.1016/j.nucengdes.2010.03.028

Cited by 17 publications

(3 citation statements)

References 30 publications

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“…The modeling strategy for an unbounded three-dimensional domain makes use of a technique to improve another methodology defined by the study [3] with the geometric restriction of the truncated interface between the near-field and the far-field zones. Fig.…”

Section: Three-dimensional Finite Element-infinite Element Methodsmentioning

confidence: 99%

Auto-Mesh Generation Technique of Near Field Zone for Soil-Structure Interaction Analysis Using Coupled FE-IE Methodology

Nam

Seo

Lee

et al. 2013

AMM

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This paper presents an auto-mesh generation technique using KIESSI (KAIST Infinite Elements for Soil-Structure Interaction) of near field zone for soil-structure interaction analysis (SSI). The working principle of KIESSI is based on coupled three dimensional finite element-infinite element methodology. Also, KIESSI is based on finite element method (FEM) for structure and near-field soil medium and infinite element method for layered half-space far-field. This study utilizes the auto mesh generation technique of near field zone on KIESSI package. The verification example for the effectiveness of automatically meshing technique may be shown through a compliance analysis of layered surface footing. For application example, seismic response analysis at a typical nuclear power plant is carried out in consideration of SSI. The obtained floor response spectrum results in good agreement as compared with the measured response data and the results from SSI analysis package such as SASSI (A System for Analysis of Soil-Structure Interaction).

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Section: Three-dimensional Finite Element-infinite Element Methodsmentioning

confidence: 99%

Auto-Mesh Generation Technique of Near Field Zone for Soil-Structure Interaction Analysis Using Coupled FE-IE Methodology

Nam

Seo

Lee

et al. 2013

AMM

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“…is model is essentially composed of a containment shell of prestressed concrete and an internal structure of reinforced concrete. For more complete information about the model, a previous study can be referred [52]. In contrast to the previous work, in this study, the stick (beam) element is de ned as a nonlinear inelastic element in terms of the Takeda-type trilinear model to describe the shear behavior of the containment building as it experiences the nonlinearity under strong-intensity ground motion.…”

Section: Structure Model and Soil Pro Lementioning

confidence: 99%

Beneficial and Detrimental Effects of Soil-Structure Interaction on Probabilistic Seismic Hazard and Risk of Nuclear Power Plant

Kwag

Jung

2018

Advances in Civil Engineering

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The purpose of this study is to investigate the soil-structure interaction (SSI) effect on the overall risk of a PWR containment building structure with respect to two failure modes: strength and displacement. The precise quantification of the risk within the seismic probabilistic risk assessment framework depends considerably on an accurate treatment of the seismic response analysis. The SSI effect is one of the critical factors to consider when accurately predicting structural responses in the event of an earthquake. Previous studies have been conducted by focusing more on the positive side of the SSI effects and the effects mainly on the seismic fragility result. Therefore, this paper presents the results of a study of the SSI effect on the overall risk. Also, the study relies on an emphasis on revealing a beneficial and a detrimental effect of the SSI by utilizing an example of the containment structure in three soil conditions and two main failure modes. As a result, the consideration of SSI shows a complete conflicting effect on the seismic fragility and risk results depending on two failure modes considered in this study. This has a positive effect regarding the strength failure mode, but this brings a negative effect regarding the displacement failure mode. The risk fluctuation width is particularly noticeable in the site having a considerable change in seismic hazard information such as Los Angeles on the western site of the US. Such results can be expected to be utilized in a future study for investigating the pros and cons of the SSI effect associated with various failure modes in diverse conditions.

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“…A viscous-spring artificial boundary element (VSABE) is introduced in [11], which is more applicable and simple by applying equivalent solid elements to replace scattered spring-damper elements. Furthermore, infinite element method (IEM) is an attractive technique since its concept and mathematical formulations are similar to those of FEM except for infinite extent of element region and shape functions [12][13]. For SSI problem of massive spatial grid structure, the precision of VSABE requires further proof, so this paper firstly makes a comparison between the two artificial boundary techniques.…”

Section: Integral Numerical Modelsmentioning

confidence: 99%

Application of 3d Time Domain Method for Seismic Soil-Structure Interaction Analysis of Spatial Grid Structure

Ding

2011

AMR

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This paper proposes a direct three-dimensional (3D) numerical method in time domain for seismic soil-structure interaction (SSI) analysis of spatial grid structure. First, a finite element model including soil, foundation and typical spatial grid structure is developed. Then, the precisions of equivalent viscous-spring artificial boundary element (VSABE) and size effect of site soil region are discussed. Finally, under different site types, time history analyses for models with or without considering SSI effect are implemented respectively under horizontal seismic excitation. The results show that VSABE has the same precision as infinite element boundary and plane size of truncated soil region can be five times of structure plane size for SSI analysis of spatial grid structure. Moreover, except for hard site, it is shown that horizontal acceleration and displacement of spatial grid roof increases substantially when SSI effect is considered. Therefore, it is suggested that SSI influence should be taken into account in engineering design of spatial grid structure.

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Seismic response analysis of soil–structure interactive system using a coupled three-dimensional FE–IE method

Cited by 17 publications

References 30 publications

Auto-Mesh Generation Technique of Near Field Zone for Soil-Structure Interaction Analysis Using Coupled FE-IE Methodology

Auto-Mesh Generation Technique of Near Field Zone for Soil-Structure Interaction Analysis Using Coupled FE-IE Methodology

Beneficial and Detrimental Effects of Soil-Structure Interaction on Probabilistic Seismic Hazard and Risk of Nuclear Power Plant

Application of 3d Time Domain Method for Seismic Soil-Structure Interaction Analysis of Spatial Grid Structure

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