Evaluation of the effect of earthquake frequency content on seismic behavior of cantilever retaining wall including soil–structure interaction

Çakir, Tufan

doi:10.1016/j.soildyn.2012.11.008

Cited by 84 publications

(38 citation statements)

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“…As pointed out by Cakir (2013), 2-D analysis may introduce potential errors since the radiation damping is grossly overestimated in a 2-D model of a 3-D case. Even so, 3-D cases are often reduced to 2-D problems, especially in wave barrier analyses.…”

Section: Problem Defi Nition and Basic Assumptionsmentioning

confidence: 99%

Analysis and design of open trench barriers in screening steady-state surface vibrations

Saikia

Das

2014

Earthq. Eng. Eng. Vib.

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The problem of vibration isolation by rectangular open trenches in a plane strain context is numerically studied using a fi nite element code, PLAXIS. The soil media is assumed to be linear elastic, isotropic, and homogeneous subjected to a vertical harmonic load producing steady-state vibration. The present model is validated by comparing it with previously published works. The key geometrical features of a trench, i.e., its depth, width, and distance from the source of excitation, are normalized with respect to the Rayleigh wavelength. The attenuation of vertical and horizontal components of vibration is studied for various trench dimensions against trench locations varied from an active to a passive case. Results are depicted in non-dimensional forms and conclusions are drawn regarding the effects of geometrical parameters in attenuating vertical and horizontal vibration components. The screening effi ciency is primarily governed by the normalized depth of the barrier. The effect of width has little signifi cance except in some specifi c cases. Simplifi ed regression models are developed to estimate average amplitude reduction factors. The models applicable to vertical vibration cases are found to be in excellent agreement with previously published results.

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Section: Problem Defi Nition and Basic Assumptionsmentioning

confidence: 99%

Analysis and design of open trench barriers in screening steady-state surface vibrations

Saikia

Das

2014

Earthq. Eng. Eng. Vib.

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“…The springs are linear in nature and are dependent on the subgrade modulus (Wolf 1985;Arya and Paul 1977;Bowles 1997). Elastic continuum model is a conceptual approach of physical representation of the infinite soil media (Rajasankar et al 2007;Tabatabaiefar and Massumi 2010;Cakir 2013). For the finite element model, the accuracy is valid to the extent of realistic estimate of the elastic modulus of the soil and Poisson's ratio (Chowdhury and Dasgupta 2009).…”

Section: Soil-structure Interactionmentioning

confidence: 99%

“…For the finite element model, the accuracy is valid to the extent of realistic estimate of the elastic modulus of the soil and Poisson's ratio (Chowdhury and Dasgupta 2009). Real progress in the area of three-dimensional soil-structure interaction has taken place with the advent of digital computers (Jayalekshmi et al 2011;Rajasankar et al 2007;Tabatabaiefar and Massumi 2010;Cakir 2013).…”

Section: Soil-structure Interactionmentioning

confidence: 99%

Wind load analysis of tall chimneys with piled raft foundation considering the flexibility of soil

Jayalekshmi

Jisha

Shivashankar

2015

Int J Adv Struct Eng

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Soil-structure interaction (SSI) analysis was carried out for tall reinforced concrete chimneys with piled raft foundation subjected to wind loads. To understand the significance of SSI, four types of soil were considered based on different material properties. Chimneys of different elevations and different ratios of height to base diameter of chimney were selected for the parametric study. The thickness of raft of piled raft foundation was also varied based on different ratios of outer diameter to thickness of raft. The chimneys were assumed to be located in open terrain and subjected to a maximum wind speed of 50 m/s. The along-wind and across-wind loads were computed according to IS: 4998 (Part 1)-1992 and applied along the height of the chimney. The analysis was carried out using three-dimensional finite element technique based on the direct method of SSI. The linear elastic material behaviour was assumed for the integrated chimney-foundation-soil system. The radial and tangential moments, lateral deflection and base moment of chimney were evaluated through SSI analysis and compared with the response obtained from chimney with fixed base. The base moment of chimney considerably reduces due to the effect of SSI. It is found that the variation of different responses in chimney due to the effect of SSI depends significantly on the geometrical properties of chimney and foundations.The response variation at base for a distance of 1/40th of the height of chimney should be considered for a safe design.

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“…should be included in the model. Many researchers have investigated the e ects of di erent parameters of earthquakes on response of structures [18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Domain reduction method for seismic analysis of Dam-Foundation-Fault system

2018

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Abstract. Numerical simulation of dam-foundation-fault system, considering the earthquake source, propagation path, and local site e ects, was carried out for realistic and reasonable seismic safety analysis of concrete dams. The Domain Reduction Method (DRM) was used for seismic analysis of Dam-Foundation-Fault (DFF) system, in which a modular two-step methodology for reducing the computational costs in large domain analysis was introduced. In this method, seismic excitation is directly applied to the computational domain such that assigning arti cial boundary to the nite element models is more comfortable. In order to verify the implementation of the DRM in Finite Element Method (FEM), a simple 2D half-space under the Ricker wavelet excitation was examined. Then, to investigate the DRM as an appropriate method in seismic analysis of DFF system, the Koyna concrete gravity dam was modeled. Comparing the obtained results by using both the DRM in a small domain and the traditional approach in the large domain containing the source shows the e ciency of the DRM in terms of computational costs, such as running time and number of elements for seismic analysis of concrete gravity dams.

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Evaluation of the effect of earthquake frequency content on seismic behavior of cantilever retaining wall including soil–structure interaction

Cited by 84 publications

References 50 publications

Analysis and design of open trench barriers in screening steady-state surface vibrations

Analysis and design of open trench barriers in screening steady-state surface vibrations

Wind load analysis of tall chimneys with piled raft foundation considering the flexibility of soil

Domain reduction method for seismic analysis of Dam-Foundation-Fault system

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