Dynamic response of three-dimensional rigid and flexible foundations on layered soils with local inhomogeneities

Freisinger, Julian; Radišić, Marko; Taddei, Francesca; Müller, Gerhard

doi:10.1016/j.soildyn.2021.107007

Cited by 4 publications

(2 citation statements)

References 28 publications

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“…(x, y, ω). The computational procedure to determine Fs can be optimized considering symmetry conditions and a shifting point technique as shown in [13].…”

Section: Dynamic Soil Stiffnessmentioning

confidence: 99%

Seismic soil-structure interaction analysis considering a layered half space subjected to geothermal induced seismicity

Taddei,

Yuan,

Freisinger

et al. 2024

J. Phys.: Conf. Ser.

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In the near future, geothermal energy is bound to play a critical role in the transition to sustainable energy sources. Micro-earthquakes may be induced by the underground operations performed at the geothermal power plants. In most cases, these vibrations are considered a general nuisance similar to the vibrations resulting from railway track operations. However, given the heightened public concern regarding induced seismicity, it is crucial to identify and analyze the effects of these micro-seismic events on the built environment. In this contribution, we present a numerical technique for the simulation of buildings subjected to geothermal induced seismicity. We apply a substructure method, where the soil is represented as a continuum using the integral transform method (ITM) and the building as a discrete structure using the finite element method (FEM). For the semi-analytical elastodynamical solution, as in the ITM case, the seismic excitation can be converted to an equivalent load acting at the interaction nodes between soil and structure. To obtain these equivalent loads, one has to compute in advance the free field displacements at these interaction nodes. We apply the presented approach to a plate underlain by a layered half space that is subjected to a geothermal-induced earthquake with characteristics typical for the Greater Munich Area in Germany.

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“…(x, y, ω). The computational procedure to determine Fs can be optimized considering symmetry conditions and a shifting point technique as shown in [13].…”

Section: Dynamic Soil Stiffnessmentioning

confidence: 99%

Seismic soil-structure interaction analysis considering a layered half space subjected to geothermal induced seismicity

Taddei,

Yuan,

Freisinger

et al. 2024

J. Phys.: Conf. Ser.

Self Cite

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“…Numerical difficulties arise for multilayer media also when using infinite elements (IFE), perfectly matched layers (PLM) or absorbing boundary conditions (ABC). To solve this problem, a significant number of studies are devoted to a combination of finite (FEM) and boundary (BEM) element methods [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Multilayer medium behavior simulation in the presence of delamination defects

Lyapin,

Glushko

2023

E3S Web of Conf.

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The article is devoted to the study of the steady harmonic oscillation excitation processes by a surface source in a multilayer linearly elastic layered half-plane with an internal defect. The application of the work results is associated with the design and assessment of the multilayer structures state, such as geological structures, non-rigid pavements, layered composites. The study is based on the use of the boundary element method and the construction of boundary equations with respect to displacements at the defect boundary. Using the integral Fourier transform, fundamental solutions for a multilayer half-plane satisfying the stress-free conditions at the upper boundary of the domain are constructed. A feature of the construction is the good computational ability of the proposed algorithm with a large number of layers. The basic one is the construction of a solution for a homogeneous half-plane. This allows you to implement parallel computing. In the numerical implementation, a spline approximation of the defect boundary is used. Linear boundary elements are applied. As an example, a comparative analysis of the amplitude-frequency characteristics on the surface of the half-plane is given for cases of a limited defect, its absence and contact of layers without friction on the entire boundary. This allows us to draw conclusions about the possibility of identifying internal damage at the boundaries of layers by monitoring the wave field on the surface of a multilayer structure.

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An analytical solution for the dynamic tunnel–soil–shallow foundation interaction under a harmonic point load

Cao

Bai

Yuan

et al. 2023

Soil Dynamics and Earthquake Engineering

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Dynamic response of three-dimensional rigid and flexible foundations on layered soils with local inhomogeneities

Cited by 4 publications

References 28 publications

Seismic soil-structure interaction analysis considering a layered half space subjected to geothermal induced seismicity

Seismic soil-structure interaction analysis considering a layered half space subjected to geothermal induced seismicity

Multilayer medium behavior simulation in the presence of delamination defects

An analytical solution for the dynamic tunnel–soil–shallow foundation interaction under a harmonic point load

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