Basic numerical modelling issues in dynamic soil-tunnel interaction

Terzi, Vasiliki G.; Manolis, George D.

doi:10.1016/j.soildyn.2023.108060

Cited by 3 publications

(2 citation statements)

References 198 publications

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“…Bariker and Kolathayar [18] have employed the FEA method to analyze a new foundation construction. Other studies have looked at the effects of SSSI on underground structures such as tunnels, finding that soil-structure interaction can cause significant stress and deformation in the tunnel [19,20]. Overall, the state of the art in SSSI analysis is rapidly advancing, with researchers developing new methods and models to better understand the complex interactions between structures and soil.…”

Section: Introductionmentioning

confidence: 99%

A Coupled Finite-Boundary Element Method for Efficient Dynamic Structure-Soil-Structure Interaction Modeling

Azhir,

Asgari Marnani,

Panji

et al. 2024

MCA

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This paper introduces an innovative approach to numerically model Structure–Soil-Structure Interaction (SSSI) by integrating the Boundary Element Method (BEM) and the Finite Element Method (FEM) in a coupled manner. To assess the accuracy of the proposed method, a comparative study is undertaken, comparing its outcomes with those generated by the conventional FEM technique. Alongside accuracy, the computational efficiency aspect is crucial for the analysis of large-scale SSSI problems. Hence, the computational performance of the coupled BEM–FEM method undergoes a thorough examination and is compared with that of the standalone FEM method. The results from these comparisons illustrate the superior capabilities of the proposed method in comparison to the FEM method. The novel approach provides more reliable results compared to traditional FEM methods, serving as a valuable tool for engineers and researchers involved in structural analysis and design.

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Section: Introductionmentioning

confidence: 99%

A Coupled Finite-Boundary Element Method for Efficient Dynamic Structure-Soil-Structure Interaction Modeling

Azhir,

Asgari Marnani,

Panji

et al. 2024

MCA

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“…Accordingly, in recent decades, many researchers in the field of geotechnical engineering have tried to propose and develop suitable and relatively accurate constitutive models to appropriately show the behavior of soils (see, for example, [1][2][3][4]). On the other hand, one of the situations that may result in the failure of structures is related to dynamic and cyclic loading of soils and the related problems, such as liquefaction observed during earthquakes [5][6][7][8][9][10][11][12][13][14]. Therefore, in addition to precise simulation of the soil behavior under monotonic loadings, a suitable constitutive model for the soil behavior under cyclic loadings is essential.…”

Section: Introductionmentioning

confidence: 99%

Modification of the Reloading Plastic Modulus in Generalized Plasticity Models for Soil by Introducing a New Equation for the Memory Parameter in Cyclic Loadings

Oliaei,

Kamgar,

Heidarzadeh

et al. 2024

Applied Sciences

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Nowadays, with the widespread supply of very powerful laboratory and computer equipment, it is expected that the analyses conducted for geotechnical problems are carried out with very high precision. Precise analyses lead to better knowledge of structures’ behavior, which, in turn, reduces the costs related to uncertainty of materials’ behavior. A precise analysis necessitates a precise knowledge and definition of the behavior of the constituent materials, which itself requires applying an appropriate constitutive model to show the behavior of materials. Constitutive models used in the generalized plasticity framework are very powerful constitutive models for the simulation of sand behavior. However, the simulation of a cyclic behavior in these models, especially the simulation of the undrained cyclic behavior, is not well-recognized. In this study, in order to eliminate the weakness of generalized constitutive models under cyclic loading, a new equation is presented to substitute the so-called coefficient of the discrete memory factor to consider the loading history in such a way that the plastic modulus is modified during reloading and, as a result, more appropriate predictions of sand behavior are obtained. The performance accuracy of the proposed coefficient was evaluated in accordance with the experimental data. Finally, the results show that after using the modification of the loading history coefficient, predictions of the constitutive model are significantly improved.

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A Coupled Finite-Boundary Element Method for Efficient Dynamic Structure-Soil-Structure Interaction Modeling

Azhir,

Asgari Marnani,

Panji

et al. 2024

Preprint

View full text Add to dashboard Cite

This paper introduces an innovative approach to numerically model Structure-Soil-Structure Interaction (SSSI) by integrating the Boundary Element Method (BEM) and the Finite Element Method (FEM) in a coupled manner. To assess the accuracy of the proposed method, a comparative study is undertaken, comparing its outcomes with those generated by the conventional FEM technique. Alongside accuracy, the computational efficiency aspect is crucial for the analysis of large-scale SSSI problems. Hence, the computational performance of the coupled BEM-FEM method undergoes a thorough examination and is compared with that of the standalone FEM method. The results from these comparisons illustrate the superior capabilities of the proposed method in comparison to the FEM method. The novel approach provides more reliable results compared to traditional FEM methods, serving as a valuable tool for engineers and researchers involved in structural analysis and design.

show abstract

Basic numerical modelling issues in dynamic soil-tunnel interaction

Cited by 3 publications

References 198 publications

A Coupled Finite-Boundary Element Method for Efficient Dynamic Structure-Soil-Structure Interaction Modeling

A Coupled Finite-Boundary Element Method for Efficient Dynamic Structure-Soil-Structure Interaction Modeling

Modification of the Reloading Plastic Modulus in Generalized Plasticity Models for Soil by Introducing a New Equation for the Memory Parameter in Cyclic Loadings

A Coupled Finite-Boundary Element Method for Efficient Dynamic Structure-Soil-Structure Interaction Modeling

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