Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Impact of site condition on Arias intensity and Cumulative absolute velocity: application for low seismicity areas
The local site conditions amplify the seismic waves in superficial geological layers and often aggravate the buildings seismic damage. The purpose of this paper is to analysis the site effects impact on some parameters that measures the intensity of an earthquake, such as: Arias intensity and Cumulative absolute velocity. The increase of seismic characteristics chosen due to site effect, from bedrock to free surface layer has been quantified through two aggravation factors: the impact on Arias intensity and Cumulative absolute velocity. To respect the practical use in engineering in terms of: amplitude, frequency contents and seismic duration. Modified signals recorded near-source on outcropping rock are used. Therefore, The 1D linear viscoelastic site responses to incident S waves are computed in the goal to obtain the soil response at free surface based on pointing work of ‘Thomson_ Haskell’. Moreover, the seismic input considered consists of 14 real waveforms and a peak ground acceleration at the bedrock varied from 0.05 to 0.2 g respecting the use of the 1D linear viscoelastic limited to low seismicity areas. At this effect, various site condition are chosen, with a series of 280 soil columns reserved with average shear wave velocity over the upper 30 m, varying from 100 to 1070 m/s and also bedrocks with a shear wave velocity varying from 750 to 1200 m/s. This study examines the site effect influence, on Arias intensity and Cumulative absolute velocity, by developing a predictive models taking into account the site proxies parameters and respecting each shape of seismic loading, The results obtained show a great impact of the site conditions on Arias intensity and Cumulative absolute velocity, which increase considerably with the increase of velocity contrast and resonance frequency. The obtained ratio values of the impact on Arias intensity can reach a value of 4 and 2 for the impact on Cumulative absolute velocity, for value of velocity contrast equal to 3.5 and simultaneously for resonance frequency around 5 Hz.
Impact of site condition on Arias intensity and Cumulative absolute velocity: application for low seismicity areas
The local site conditions amplify the seismic waves in superficial geological layers and often aggravate the buildings seismic damage. The purpose of this paper is to analysis the site effects impact on some parameters that measures the intensity of an earthquake, such as: Arias intensity and Cumulative absolute velocity. The increase of seismic characteristics chosen due to site effect, from bedrock to free surface layer has been quantified through two aggravation factors: the impact on Arias intensity and Cumulative absolute velocity. To respect the practical use in engineering in terms of: amplitude, frequency contents and seismic duration. Modified signals recorded near-source on outcropping rock are used. Therefore, The 1D linear viscoelastic site responses to incident S waves are computed in the goal to obtain the soil response at free surface based on pointing work of ‘Thomson_ Haskell’. Moreover, the seismic input considered consists of 14 real waveforms and a peak ground acceleration at the bedrock varied from 0.05 to 0.2 g respecting the use of the 1D linear viscoelastic limited to low seismicity areas. At this effect, various site condition are chosen, with a series of 280 soil columns reserved with average shear wave velocity over the upper 30 m, varying from 100 to 1070 m/s and also bedrocks with a shear wave velocity varying from 750 to 1200 m/s. This study examines the site effect influence, on Arias intensity and Cumulative absolute velocity, by developing a predictive models taking into account the site proxies parameters and respecting each shape of seismic loading, The results obtained show a great impact of the site conditions on Arias intensity and Cumulative absolute velocity, which increase considerably with the increase of velocity contrast and resonance frequency. The obtained ratio values of the impact on Arias intensity can reach a value of 4 and 2 for the impact on Cumulative absolute velocity, for value of velocity contrast equal to 3.5 and simultaneously for resonance frequency around 5 Hz.
Impact of site condition on Arias intensity and Cumulative absolute velocity: application for low seismicity areas
Asian J Civ Eng
DIF, Hamza (Autor:in) / Stambouli, Ahmed Boudghene (Autor:in)
Asian Journal of Civil Engineering ; 24 ; 1411-1424
01.07.2023
14 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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