Review of Soil-Structure Interaction Based on Continuum Mechanics Theory and Use of High Performance Computing

Riaz, Muhammad Rizwan; Motoyama, Hiroki; Hori, Muneo

doi:10.3390/geosciences11020072

Cited by 8 publications

(9 citation statements)

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“…The soil deformability consequence is assessed employing a "discrete" system of "spring-dashpot-mass" [51] elements, with calculated values specified by Mulliken and Karabalis [51] using the relative calculation formulations providing the required mass, stiffness, and damping coefficients, as shown in Table 2 for reading convenience. In the worldwide literature [25][26][27][28][29], more complicated SSI models can be found, which may need time-consuming and complicated calculations and emphasize soil dynamic behavior. Here, attention is drawn to the nonlinear seismic response of the mixed model perspective with the impact of soil deformability in comparison to the rigid soil assumption.…”

Section: Description Of Case Models and Nlth Analysismentioning

confidence: 99%

“…The dynamic "Soil-Structure Interaction (SSI)" [3] is widely identified to be critical in the response of special structures such as bridges [21,22], silos [23], and base-isolated structures [24] and, correspondingly, necessary to consider in their design [3]. Even more complex SSI models are accessible in research works, e.g., [25][26][27], that focus mainly on soil behavior [28,29]; however, they are not discussed here as they are not relevant to the aim of this work. Moreover, research works on usual structures have highlighted a significant impact of the deformability of the ground on the response of usual r/c constructions, as exemplified by [30][31][32][33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

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The Influence of Soil Deformability on the Seismic Response of 3D Mixed R/C–Steel Buildings

Askouni

2024

Infrastructures

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Following effective seismic codes, common buildings are considered to be made of the same material throughout the story distribution and based on an ideal rigid soil. However, in daily construction practice, there are often cases of buildings formed by a bottom part constructed with reinforced concrete (r/c) and a higher steel part, despite this construction type not being recognized by code assumptions. In addition, soil deformability, commonly referred to as the Soil–Structure Interaction (SSI), is widely found to affect the earthquake response of typical residence structures, apart from special structures, though it is not included in the normative design procedure. This work studies the seismic response of in-height mixed 3D models, considering the effect of sustaining deformable ground compared to the common rigid soil hypothesis, which has not been clarified so far in the literature. Two types of soft soil, as well as the rigid soil assumption, acting as a reference point, are considered, while two limit interconnections between the steel part on the concrete part are included in the group analysis. The possible influence of the seismic orientation angle is explored in the analysis set. Selected numerical results of the dynamic nonlinear analyses under strong near-fault ground excitations were plotted through dimensionless parameters to facilitate an objective comparative discussion. The effect of SSI on the nonlinear performance of three-dimensional mixed models is identified, which serves as the primary contribution of this work, making it unique among the numerous research works available globally and pointing to findings that are useful for the enhancement of the seismic rules regarding the design and analysis of code-neglected mixed buildings.

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Section: Description Of Case Models and Nlth Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Influence of Soil Deformability on the Seismic Response of 3D Mixed R/C–Steel Buildings

Askouni

2024

Infrastructures

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“…In total, 46 models were run for the 11 events. The parameters used for the analysis were: the average absolute error, calculated using Equation (10); the relative error of the maximum acceleration calculated by Equation (11); the relative error of the number of crossover distortions, given by Equation ( 12); the relative error of the number of crossover distortions for the strongest signal of the recording, given by Equation ( 13); the relative error of the duration of the strongest signal, calculated through Equation ( 14); and the relative error of the dominant frequency, given by Equation (15). The definitions of the parameters and the formulas are listed below.…”

Section: Comparisons Using Statistical Parametersmentioning

confidence: 99%

“…Continuum models, based on the employment of brick or shell elements (for 3D and 2D analyses, respectively) to represent the soil behavior and the soil-structure interaction, are commonly referred to as the most exact and accurate for the prediction of the response of the complete soil-foundation-structure system. This kind of modeling technique is timeconsuming due to many degrees of freedom considered to represent the entire system, and therefore, its application has been focused on very large and stiff structures, like nuclear power plants, mostly for academic purposes [8][9][10]. However, the fast increase in the processing capabilities of computers is expected to make this methodology suitable for design purposes in the mid-term.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Study of the Seismic Response of an Instrumented Building with Underground Stories

et al. 2021

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Engineering practitioners do not usually include soil–structure interactions in building design; rather, it is common to model and design foundations as embedded joints with joint–based reactions. In some cases, foundation structures are modeled as rigid bodies, embedding the first story into lower vertical elements. Given that the effects of underground floors on the seismic response are not generally included in current building design provisions, it has been little explored in the literature. This work compares and analyzes models to study the effects of different underground stories modeling approaches using earthquake vibration data recorded for the 16–story Alcazar building office in downtown Viña del Mar (Chile). The modeling expands beyond an embedded first story structure to soil with equivalent springs, representing soil–structure interaction (SSI), with varying rigid soil homogeneity. The building was modeled in a finite element software considering only dead load as a static load case because the structure remained in the framing stage when the monitoring system was operating. The instruments registered 72 aftershocks from the 2010 Maule Earthquake, and this study focused on 11 aftershocks of different hypocenters and magnitudes to collect representative information. The comparisons between empirical records and models in this study showed a better fit between the model and the real vibration data for the models that do consider the SSI using horizontal springs attached to the retaining walls of the underground stories. In addition, it was observed that applying a stiffness reduction factor of 0.7 to all elements in deformation verification models for average–height buildings was suitable to analyze the behavior under small earthquakes; better results are obtained embedding the structure in the foundation level than embedding in the street level; the use of horizontal springs with Kuesel’s model with traction for the analysis of the structure yields appropriate results; it is necessary to carefully select the spring constants to be used, paying special attention to the vertical springs. Even though the results presented herein indicate that the use of vertical springs to simulate the SSI of the base slab can result in major differences concerning the real response, it is necessary to obtain more data from instrumentation across a wider variety of structures to continue to evaluate better design and modeling practices. Similarly, further analyses, including nonlinear time–history and high–intensity events, are needed to best regulate building design.

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Analytical plasticity‐based model for soil–structure interaction of lumped system on heterogeneous soil media

Bahuguna,

Firoj

2023

Earthquake Engineering and Resilience

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In the present study, an analytical approach is developed for the soil–structure interaction for the linear, eq. linear and elastic‐perfectly plastic layered soil strata. The amplification factor is calculated at the top of a lumped structure incorporating layered soil, foundation, and super‐structure deformation. The equation of motion of the system under the normalized earthquake excitation is solved using the direct integration method. MATLAB script is developed to carry out the parametric study, and nonlinear time history analysis is performed. The present methodology is compared with the finite element model (FEM), which shows good agreement. The computational time is much less than the FEM method. A parametric study is carried out in terms of soil heterogeneity, mass ratio, slenderness ratio, excitation frequency, and material model. The results indicate that due to the heterogeneity of the soil, the response of the structure is increased significantly; with the increase in the mass ratio, the amplification factor decreases with excitation frequency up to resonance, and the effect of mass ratio is negligible at the higher frequency range; with the increase in slenderness ratio, the amplification factor increases up to resonance, however, at higher frequency ranges there is no effect of slenderness ratio.

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Review of Soil-Structure Interaction Based on Continuum Mechanics Theory and Use of High Performance Computing

Cited by 8 publications

References 50 publications

The Influence of Soil Deformability on the Seismic Response of 3D Mixed R/C–Steel Buildings

The Influence of Soil Deformability on the Seismic Response of 3D Mixed R/C–Steel Buildings

Numerical Study of the Seismic Response of an Instrumented Building with Underground Stories

Analytical plasticity‐based model for soil–structure interaction of lumped system on heterogeneous soil media

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