Linear and nonlinear soil-structure interaction analysis of buildings and safety-related nuclear structures

Bolisetti, Chandrakanth; Whittaker, Andrew S.; Coleman, Justin

doi:10.1016/j.soildyn.2018.01.026

Cited by 86 publications

(26 citation statements)

References 14 publications

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“…The dimensions of the elements inside the mesh followed the previous contributions [19,20] and the performance of the lateral boundaries was verified by comparing the accelerations at the top of the mesh with those obtained under Free Field (FF) conditions to reproduce wave mechanisms. Mesh discretization was derived from and considering 120 m/s as the lowest shear wave velocity, and 10 Hz as maximum frequency, following suggestions from [39]. The backbone curves of the infill and foundation soil are shown in Figures 3 and 4, while the material parameters in Tables 1 and 2, by considering the values adopted in [40,41].…”

Section: Soil Modelmentioning

confidence: 99%

Seismic Fragility for a Masonry-Infilled RC (MIRC) Building Subjected to Liquefaction

Forcellini

2021

Applied Sciences

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Historical earthquakes have documented that lateral spread and settlements are the most significant damages induced by soil liquefaction. Therefore, assessing its effects on structural performance has become a fundamental issue in seismic engineering. In this regard, the paper proposes to develop analytical fragility curves of a Masonry-Infilled RC (MIRC) structure subjected to liquefaction-induced damages. In order to reproduce the nonlinear cyclic behavior (dilation tendency and the increase in cyclic shear strength) due to liquefaction, nonlinear hysteretic materials and advanced plasticity models were applied. The findings herein obtained in terms of seismic fragility of the MIRC building subjected to liquefaction may be implemented as guidelines or code provisions.

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Section: Soil Modelmentioning

confidence: 99%

Seismic Fragility for a Masonry-Infilled RC (MIRC) Building Subjected to Liquefaction

Forcellini

2021

Applied Sciences

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“…The mesh size was assumed up to T.M.S.L. −90.0 m (H 102.3 m) as ranging from 1.0 to 7.125 m depending on the shear wave velocity, V s , in the vertical direction so that the maximum frequency of the surface layer was approximately 15 Hz, referring to Bolisetti et al (2018). Here the free-field ground surface of the actual soil is at T.M.S.L.…”

Section: Soil Modelingmentioning

confidence: 99%

3D FEM Soil-Structure Interaction Analysis for Kashiwazaki–Kariwa Nuclear Power Plant Considering Soil Separation and Sliding

Yoshitaka

Nakamura

Moritani³

et al. 2021

Front. Built Environ.

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In the 2007 Niigataken Chuetsu-oki earthquake, soil settlement, considered to be a result of the relative displacement between the soil and the structure, occurred alongside buildings at Kashiwazaki–Kariwa nuclear power plant. The objective of this study is to evaluate accurately the influence of the nonlinear behavior of the soil-structure interface on the response of the reactor building using a three-dimensional finite element model. To achieve this, we modeled the separation and sliding from sidewalls during a severe earthquake using joint elements, and evaluated the effect on the horizontal response of the structure. Through the soil-structure interaction analyses based on the recorded seismic data on the foundation for unit 7 reactor building using the three-dimensional finite element model, it was confirmed that the simulated horizontal responses of the building corresponded to the recorded seismic data. In addition, the comparison of the cases with and without separation and sliding revealed that the separation and sliding of soil from sidewalls reduces the embedment effects of the structure and that the reduction causes an occurrence of the foundation uplift. Moreover, in this study, it was clarified that the increase of the foundation uplift affected both the soil pressure characteristics beneath the foundation and along the sidewalls, and the maximum acceleration response of structures. In this study, the separation and sliding of soil from sidewalls had only a limited influence on the structural responses; however, under severe seismic excitation, it is expected that the embedment effects will be significantly reduced due to the separation and sliding of soil. Therefore, a precise response evaluation of the building including the nonlinear behavior due to separation and sliding should be considered in the seismic response analyses under severe seismic excitation.

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“…The effect of SSI on change of damping ratio of a structure subjected to earthquake was studied by Cruz and Miranda (2017). Bolisetti et al (2018) evaluated the effect of linear and nonlinear SSI analysis on safety of nuclear structures. Karabork et al (2014) studied the effect of SSI on responses of base-isolated and fixed-base structures.…”

Section: Introductionmentioning

confidence: 99%

Seismic performance of outrigger–belt truss system considering soil–structure interaction

Tavakoli

Kamgar

Rahgozar

2019

Int J Adv Struct Eng

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The focus of this study is to investigate the seismic behavior of outrigger-braced building considering the soil-structure interaction based on finding the best location of outrigger and belt truss system. For this purpose, a central outrigger-braced frame of a steel tall building is considered. A layered soil deposit underlied this frame and the resulting soil-structure system is subjected to seismic excitation. To analyze this system, direct method is employed in OpenSees. Also, elastic and in-elastic analyses are both considered and a comparison is made between current results and the results related to the system with fixed base. The best location of outrigger-belt truss system is determined by considering the maximum roof displacement, base moment and base shear with and without soil-structure interaction. It is shown that considering SSI affects the location of outrigger-belt truss system. Elastic analysis of both systems, namely with fixed base and with soil-structure interaction, showed that locating the belt truss at higher stories caused lower amounts of roof displacement.

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Linear and nonlinear soil-structure interaction analysis of buildings and safety-related nuclear structures

Cited by 86 publications

References 14 publications

Seismic Fragility for a Masonry-Infilled RC (MIRC) Building Subjected to Liquefaction

Seismic Fragility for a Masonry-Infilled RC (MIRC) Building Subjected to Liquefaction

3D FEM Soil-Structure Interaction Analysis for Kashiwazaki–Kariwa Nuclear Power Plant Considering Soil Separation and Sliding

Seismic performance of outrigger–belt truss system considering soil–structure interaction

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