Calculation of impedances for axial symmetric foundation embedded in half-space medium using solutions for one layer stratum

Chung, I.L.; Liou, Gin Show

doi:10.1590/s1679-78252013000600008

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…Dynamic impedances are considered a primary tool in calculating the response of foundations under harmonic excitations in their different directions. Many researchers are interested in calculating these dynamic impedances using different methods; numerical, analytical, and experimental [16][17][18][19][20].…”

Section: Dynamic Impedance Calculation Methodsmentioning

confidence: 99%

Calculating the Dynamic Impedances of Foundations and their Effect on the Seismic Response of Structures: Analytical and Numerical Study

Boulkhiout¹,

Messast²

2021

Civil and Environmental Engineering Reports

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This study evaluates the movement of a frame built on soft soil under seismic excitation taking into account soil-structure interaction. First, the study was evaluated using the finite element method, then, by using a substructure method which modelled the soil using springs and dampers in a linear and nonlinear study. Rheological models were determined using impedance functions, calculated using a numerical program CONAN. These dynamic impedances are shown in the displacement vector of a three-degrees-of-freedom frame, which was calculated on the basis of lateral forces distributed over the structure height using the equivalent static method. In this regard, two different calculation norms were chosen; RPA2003 and UBC97. Finally, a parametric study was carried out, based on the effects of soil densification and the foundation geometry on the response of the RC frame.

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Section: Dynamic Impedance Calculation Methodsmentioning

confidence: 99%

Calculating the Dynamic Impedances of Foundations and their Effect on the Seismic Response of Structures: Analytical and Numerical Study

Boulkhiout¹,

Messast²

2021

Civil and Environmental Engineering Reports

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“…In those figures, we can find the Rayleigh wave numbers have the same a pair of roots as Love modes. Consequently, all of the homogeneous solutions are applied to solve the impedance functions both in layered medium [12] and in half-space medium [16].…”

Section: From Thementioning

confidence: 99%

Solving of the Transcendental Equations in Layered Media

Lei¹,

Chung²

2015

Proceedings of the 4th International Conference on Information Technology and Management Innovation

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In this paper, we use an efficient method to solve the wave numbers of transient wave propagation in layered media. To solve those problems, the analytic solution for the interior domain is combined both a homogeneous solution and a particular solution, the exterior domain is described by a homogeneous solution only. To obtain the homogeneous solution, one has challenge to solve the complex root of the transcendental equations will be discussed. For the soil-structure interaction problem, the wave number of transient wave propagation in layered media will be used for the impedance matrix of embedded axial symmetric foundation.

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Effect of Soil on the Seismic Response of Structures Taking Into Consideration Soil-Structure Interaction

Boulkhiout

Messast

2020

International Journal of Geotechnical Earthquake Engineering

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The present study covers the influence of soil-structure interaction on the response of structures and civil engineering constructions under seismic excitation. The response of the structures being studied was evaluated, first, using a perfectly embedded structure at the base. Then, using two different models to model soil-structure contact, the finite element model and a rheological model (springs and dampers) in order to illustrate the impact of soil type behavior on structure response was considered based on periods, displacements, and stresses. On the other hand, the effect of superstructure type and its stiffness on the seismic response will be determined, first, using a reinforced concrete frame with shear walls and, second, using a girder bridge. Finally, in each model mentioned above, a parametric study was conducted to better understand the dynamic behavior of the analyzed structure. As for modelling by finite element method, the study was achieved using SAP2000 code.

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Calculation of impedances for axial symmetric foundation embedded in half-space medium using solutions for one layer stratum

Cited by 3 publications

References 13 publications

Calculating the Dynamic Impedances of Foundations and their Effect on the Seismic Response of Structures: Analytical and Numerical Study

Calculating the Dynamic Impedances of Foundations and their Effect on the Seismic Response of Structures: Analytical and Numerical Study

Solving of the Transcendental Equations in Layered Media

Effect of Soil on the Seismic Response of Structures Taking Into Consideration Soil-Structure Interaction

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