A note on near-field site amplification effects of ground motion from a radially inhomogeneous valley

Zhang, Ning; Gao, Yufeng; Wu, Yongxin; Zhang, Fei

doi:10.1007/s11803-018-0470-9

Cited by 18 publications

(3 citation statements)

References 36 publications

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“…Among the isotropic studies by analytic approaches can name Sabina & Willis (1975) who used the the asymptotic wave function expansion method to provide the initial responses of the hills. Other researchers such as Yuan & Liao (1996), Cao et al (2001), Wang & Liu (2002), Lee et al (2004), Tsaur & Chang (2009), Liang & Fu (2011), Amornwongpaibun & Lee (2013), Zhang et al (2018) and Liu et al (2019) were able to study the hills behavior by analytic methods including the Bessel-Fourier function, the complex variable/function, the wave function expansion, the conformal mapping methods, etc. Moreover, Ohyoshi (1973), Lobanov & Novichkov (1981), Nayfeh & Chimenti (1988), Bao et al (1997), Chen & Liu (2005), Ke (2012), Vinh & Anh (2014), Rajak & Kundu (2019) analytically investigated the waves propagation in an anisotropic as well as orthotropic medium.…”

Section: Literature Surveymentioning

confidence: 99%

A Simple Time-Domain BEM Model for Heterogeneous Orthotropic Hill-Shaped Topographies Under Attenuated Incident SH-Wave

Mojtabazadeh-Hasanlouei

Panji

Kamalian

2023

Preprint

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A simple numeric model named DASBEM was successfully developed to analyze the seismic heterogeneous orthotropic hill-shaped topographies by a time-domain boundary element method based on half-space Green’s functions. The model was elaborated only by discretizing the hill surface and its interface with the underlying half-space in the use of image source theory and substructure approach. To improve the model at the corners, the double node procedure was applied to extreme nodes of the used quadratic elements. An attenuation ratio is implemented in the boundary equations using a decremental exponential function. After presenting the technique, a validation example presented beside the literature to measure the convergence with an isotropic response. Then, a sample Gaussian–shaped hill model is prepared under propagating obliquely incident SH-waves as common sample topography and the surface response is obtained by considering some significant parameters as well as the shape ratio, isotropy factor, frequency content, and angle of the incident wave. The ground surface response is sensitized in two time and frequency realms. The results showed that the amplitude of the response was not only dependent on the impedance ratio but also the isotropy ratio was always effective in orienting the wavefront to amplify the ground movement.

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Section: Literature Surveymentioning

confidence: 99%

A Simple Time-Domain BEM Model for Heterogeneous Orthotropic Hill-Shaped Topographies Under Attenuated Incident SH-Wave

Mojtabazadeh-Hasanlouei

Panji

Kamalian

2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Among the isotropic studies by analytical approaches can name Sabina & Willis (1975) who used the asymptotic wave function expansion method to provide the initial responses of the hills. Other researchers such as Yuan & Liao (1996), Cao et al (2001), Wang & Liu (2002), Lee et al (2004), Tsaur & Chang (2009), Liang & Fu (2011), Amornwongpaibun & Lee (2013), Zhang et al (2018), Liu et al (2019) and were able to study the hills behavior by analytical methods including the Bessel-Fourier function, the complex variable/function, the wave function expansion, the conformal mapping methods, etc. Moreover, Ohyoshi (1973), Lobanov & Novichkov (1981), Nayfeh & Chimenti (1988), Bao et al (1997), Chen & Liu (2005), Ke (2012), Vinh & Anh (2014), Rajak & Kundu (2019) analytically investigated the waves propagation in an anisotropic as well as orthotropic medium.…”

Section: Literature Reviewmentioning

confidence: 99%

A Simple TD-BEM Model for Heterogeneous Orthotropic Hill-Shaped Topographies

Mojtabazadeh-Hasanlouei,

Panji,

Kamalian

2023

Preprint

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A simple numerical model named DASBEM was successfully developed to analyze the seismic heterogeneous orthotropic hill-shaped topographies by a time-domain boundary element method (TD-BEM) based on half-space Green’s functions. The model was elaborated only by discretizing the hill surface and its interface with the underlying half-space in the use of image source theorem and substructure approach. To improve the model at the corners, the double node procedure was applied to extreme nodes of the used quadratic elements. An attenuation ratio is implemented in the boundary equations using a decremental exponential function. After presenting the technique, a validation example presented beside the literature to measure the convergence with an isotropic response. Then, a sample Gaussian–shaped hill model is prepared under propagating obliquely incident SH-waves as common sample topography and the surface response is obtained by considering some significant parameters as well as the shape ratio, isotropy factor, frequency content, and angle of the incident wave. The ground surface response is sensitized in two time and frequency domains. The results showed that the amplitude of the response was not only dependent on the impedance ratio, but also the isotropy ratio was always effective in orienting the wavefront to amplify the ground movement.

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“…Mechanical behaviors of soils under dynamic loads, such as traffic loads, construction operations, machinery vibrations, and earthquakes, are of fundamental importance in pavement engineering, geotechnical, and seismic engineering [1][2][3]. By treating soil materials as single-phase elastic or viscoelastic media, their dynamic responses to external loads have been studied extensively in classical treatments [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Elastodynamic Solutions of a Finite Soil Layer under Interior Distributed Actions

Zhang

Zhan

2021

Shock and Vibration

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Through a method of displacement potentials, Fourier series, and Hankel integral transformation, the generalized solutions of an elastic layer resting on a rigid base under arbitrary, distributed, buried, and time-harmonic loads are developed in this study. With the proposed solution, the specific results for two kinds of uniform distributions as a kind of fundamental solutions in the interaction analysis of media and inclusions by the method of boundary integral equations are included as illustrations. Finally, numerical examples involving surface and buried patch loads are presented to validate the solutions and examine the effects of the thickness of the elastic layer. The results show that the proposed solution can cover the classical half-space solution by taking enough large thickness of the elastic layer (e.g., the ratio of the layer thickness beneath the load to the load radius ≥ 50 ) and the surface load solution by setting the load depth to zero; the underlying rigid base has significant and complex influence on the dynamic response of the thin layer due to wave reflections, which needs to be considered in the design and practice of related engineering.

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A note on near-field site amplification effects of ground motion from a radially inhomogeneous valley

Cited by 18 publications

References 36 publications

A Simple Time-Domain BEM Model for Heterogeneous Orthotropic Hill-Shaped Topographies Under Attenuated Incident SH-Wave

A Simple Time-Domain BEM Model for Heterogeneous Orthotropic Hill-Shaped Topographies Under Attenuated Incident SH-Wave

A Simple TD-BEM Model for Heterogeneous Orthotropic Hill-Shaped Topographies

Elastodynamic Solutions of a Finite Soil Layer under Interior Distributed Actions

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