Dynamic soil-structure interaction studies on 275m tall industrial chimney with openings

Jayalekshmi, B. R.; Thomas, Ansu; Shivashankar, R.

doi:10.12989/eas.2014.7.2.233

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…Recent studies 3–15 have incorporated the SSI effect in the dynamic analysis of structures. For instance, Hokmabadi et al 16 discussed the SSI effect on deep foundations through shaking table tests on 5, 10, and 15‐storey buildings.…”

Section: Introductionmentioning

confidence: 99%

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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Section: Introductionmentioning

confidence: 99%

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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“…[13][14][15][16][17][18] Next, most of the FE model updating methods are not compatible with commercial FE software such as LS-DYNA. LS-DYNA, a commercial FE program, has secured the reliability of the SSI analysis; [19][20][21][22][23][24] however, it cannot perform efficient FE model updating. On the other hand, it is difficult and time consuming to generate very detailed FE model using programming language such as Java, C, or MATLAB.…”

Section: Introductionmentioning

confidence: 99%

Structural Finite Element Model Updating Considering Soil- Structure Interaction Using Ls-dyna in Loop

Park

Jung

Yoon

2022

Preprint

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In this study, a finite element model updating method which can consider soil-structure interaction was developed to analyze the effect of soil properties on the structural response while considering interaction between the soil and the structure. Additionally, LS-DYNA, a commercial finite element program, was included in the loop of the proposed technique using MATLAB to conveniently utilize the complex structures updated by the model. To validate the performance of the proposed method, a large-scale shake table test was conducted. The objective of the validation test was to seek how accurately the proposed model updating method can detect the change in the stiffness. To compare the result of the proposed method with the conventional method, the model updating procedure was conducted with and without considering soil-structure interaction. The proposed finite element model updating method which considers the soil-structure interaction estimated the stiffness of the structure with maximum accuracy of 91%, while the conventional finite element model updating without considering the soil-structure interaction showed maximum accuracy of 88%. By comparing the proposed method with the conventional method without considering the soil-structure interaction, it was confirmed that the proposed method had an 3% higher accuracy on average.

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Smoothed response spectra including soil-structure interaction effects

Behnamfar

Babaei²,

Ghandil

2020

Earthq. Eng. Eng. Vib.

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Dynamic soil-structure interaction studies on 275m tall industrial chimney with openings

Cited by 4 publications

References 6 publications

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

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

Structural Finite Element Model Updating Considering Soil- Structure Interaction Using Ls-dyna in Loop

Smoothed response spectra including soil-structure interaction effects

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