Effects of rainfall on soil–structure system frequency: Examples based on poroelasticity and a comparison with full-scale measurements

Todorovska, Maria I.; Rjoub, Yousef S. Al

doi:10.1016/j.soildyn.2006.01.019

Cited by 56 publications

(24 citation statements)

References 12 publications

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“…These tendencies are consistent with the numerical results published by Todorovska and Al Rjoub (2006b), who present differences of around 2 % for a 2D model. The results are also in line with the experimental data presented by Todorovska and Al Rjoub (2006a) on the observed increase in the apparent frequencies of Millikan library in Pasadena, California, after heavy rainfall.…”

Section: Soil-structure Interaction Problem In Poroelastic Soilssupporting

confidence: 91%

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A BEM–FEM model for the dynamic analysis of building structures founded on viscoelastic or poroelastic soils

Santana

Aznárez

Padrón

et al. 2015

Bull Earthquake Eng

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This paper presents a time-harmonic boundary element-finite element threedimensional model for the dynamic analysis of building structures founded on viscoelastic or poroelastic soils. The building foundation and soil domains are modelled as homogeneous, isotropic, viscoelastic or poroelastic media using boundary elements. The foundation can also be modelled as a perfectly rigid body coupled to soil and structure. The buildings are modelled using Timoshenko beam finite elements that include the torsional eccentricity of non-symmetrical buildings. The excitation model includes far-field plane seismic waves of P, S or Rayleigh type for viscoelastic soils and P1 and S type for poroelastic soils. Modelling foundation and structure as rigid body and Timoshenko beam respectively conveys important benefits such as a significant reduction in the number of degrees of freedom in the problem, which allows to study problems involving several building structures and the interactions between them with acceptable computational effort. Results are presented for validation purposes first, and for studying the influence of modelling the soil as a viscoelastic or poroelastic region afterwards. Results involving structure-soil-structure interaction are also presented for illustration purposes.

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Section: Soil-structure Interaction Problem In Poroelastic Soilssupporting

confidence: 91%

“…These properties correspond to a viscoelastic medium equivalent to the dry soil reported in Todorovska and Al Rjoub (2006a).…”

Section: Soil-structure Interaction Problem In Viscoelastic Soilmentioning

confidence: 68%

A BEM–FEM model for the dynamic analysis of building structures founded on viscoelastic or poroelastic soils

Santana

Aznárez

Padrón

et al. 2015

Bull Earthquake Eng

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show abstract

“…Theoretical calculations based on poromechanics representation of the soil matrix and comparisons of the frequencies of the soil-structure system between dry conditions and conditions of saturation by fluids are in excellent agreement with the observed changes in the system frequencies [91,92].…”

Section: Millikan Library (Ml)supporting

confidence: 65%

Detection thresholds in structural health monitoring

Trifunac¹,

Ebrahimian²

2014

Soil Dynamics and Earthquake Engineering

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“…In their study, the foundation was modeled as an axisymmetric rigid massless body and the dynamic interaction problem was solved by an integral equation method. Todorovska and Rjoub [30,31] used a simple two-dimensional soil-structure interaction model for a building supported by a rigid circular foundation embedded in a poroelastic half space. These studies provided useful insight into the effect of dynamic interaction between the side of the foundation and the surrounding soil on the dynamic response of rigid embedded foundations in poroelastic soil.…”

Section: Introductionmentioning

confidence: 99%

Vertical dynamic response of a rigid foundation embedded in a poroelastic soil layer

Cai

et al. 2008

Num Anal Meth Geomechanics

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SUMMARYA simplified analytical method is presented for the vertical dynamic analysis of a rigid, massive, cylindrical foundation embedded in a poroelastic soil layer. The foundation is subjected to a time-harmonic vertical loading and is perfectly bonded to the surrounding soil in the vertical direction. The soil underlying the foundation base is represented by a single-layered poroelastic soil based on rigid bedrock while the soil at the side of the foundation is modeled as an independent poroelastic layer composed of a series of infinitesimally thin layers. The behavior of the soil is governed by Biot's poroelastodynamic theory and its governing equations are solved by the use of Hankel integral transform. The contact surface between the foundation base and the soil is smooth and fully permeable. The dynamic interaction problem is solved following standard numerical procedures. The accuracy of the present solution is verified by comparisons with the well-known solutions obtained from other approaches for both the elastodynamic interaction problem and poroelastodynamic interaction problem. Numerical results for the vertical dynamic impedance and response factor of the foundation are presented to demonstrate the influence of nondimensional frequency of excitation, soil layer thickness, poroelastic material parameters, depth ratio and mass ratio on the dynamic response of a rigid foundation embedded in a poroelastic soil layer.

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Effects of rainfall on soil–structure system frequency: Examples based on poroelasticity and a comparison with full-scale measurements

Cited by 56 publications

References 12 publications

A BEM–FEM model for the dynamic analysis of building structures founded on viscoelastic or poroelastic soils

A BEM–FEM model for the dynamic analysis of building structures founded on viscoelastic or poroelastic soils

Detection thresholds in structural health monitoring

Vertical dynamic response of a rigid foundation embedded in a poroelastic soil layer

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