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Estimation of probabilistic seismic sliding displacement and pseudo-static coefficients (k15) for seismic stability assessment of slopes in the southern Lower Mainland, British Columbia
https://orcid.org/0000-0003-4847-9279
https://orcid.org/0000-0002-7391-9806
https://orcid.org/0000-0001-9366-0267
https://orcid.org/0000-0003-0609-3976
Abstract Seismic stability of slopes across the Lower Mainland, British Columbia, is investigated based on a probabilistic solution of the Newmark sliding block analogy. The various seismicity sources in the region and the latest updates in sliding displacement prediction models are utilized to determine the probabilistic values for the sliding displacement of slopes at 10 sites across the southern Lower Mainland. The probabilistic displacement (Dprob) values of the considered 10 sites are used to assess the spatial variation of Dprob and the pseudo-static seismic coefficient for Dprob = 15 cm (k15) across the Lower Mainland. Based on spatial variation patterns observed at 7 training sites, regression analysis is employed to develop regional interpolation models to estimate Dprob and k15 values. The accuracy of the regression models to regionally interpolate Dprob and k15 values is confirmed considering model residuals. Calculated probabilistic values at 3 additional test sites confirm that the proposed models estimate Dprob and k15 values with minimal error in Dprob (< 5 cm). The application of the developed Dprob and k15 regional interpolation models is presented with an illustrative example from Coquitlam in the northeastern Lower Mainland.
Highlights Probabilistic seismic slope analysis is performed for sites in the Southern Lower Mainland. Ten different sites are considered, and the probabilistic seismic displacement of slopes are calculated for them. Spatial variations are assessed and regional predictive models are developed for estimation of probabilistic seismic displacements and pseudo-static coefficients. The developed regional models for probabilistic solution enhances the current pseudo-probabilistic approach.
Estimation of probabilistic seismic sliding displacement and pseudo-static coefficients (k15) for seismic stability assessment of slopes in the southern Lower Mainland, British Columbia
https://orcid.org/0000-0003-4847-9279
https://orcid.org/0000-0002-7391-9806
https://orcid.org/0000-0001-9366-0267
https://orcid.org/0000-0003-0609-3976
Abstract Seismic stability of slopes across the Lower Mainland, British Columbia, is investigated based on a probabilistic solution of the Newmark sliding block analogy. The various seismicity sources in the region and the latest updates in sliding displacement prediction models are utilized to determine the probabilistic values for the sliding displacement of slopes at 10 sites across the southern Lower Mainland. The probabilistic displacement (Dprob) values of the considered 10 sites are used to assess the spatial variation of Dprob and the pseudo-static seismic coefficient for Dprob = 15 cm (k15) across the Lower Mainland. Based on spatial variation patterns observed at 7 training sites, regression analysis is employed to develop regional interpolation models to estimate Dprob and k15 values. The accuracy of the regression models to regionally interpolate Dprob and k15 values is confirmed considering model residuals. Calculated probabilistic values at 3 additional test sites confirm that the proposed models estimate Dprob and k15 values with minimal error in Dprob (< 5 cm). The application of the developed Dprob and k15 regional interpolation models is presented with an illustrative example from Coquitlam in the northeastern Lower Mainland.
Highlights Probabilistic seismic slope analysis is performed for sites in the Southern Lower Mainland. Ten different sites are considered, and the probabilistic seismic displacement of slopes are calculated for them. Spatial variations are assessed and regional predictive models are developed for estimation of probabilistic seismic displacements and pseudo-static coefficients. The developed regional models for probabilistic solution enhances the current pseudo-probabilistic approach.
Estimation of probabilistic seismic sliding displacement and pseudo-static coefficients (k15) for seismic stability assessment of slopes in the southern Lower Mainland, British Columbia
https://orcid.org/0000-0003-4847-9279
https://orcid.org/0000-0002-7391-9806
https://orcid.org/0000-0001-9366-0267
https://orcid.org/0000-0003-0609-3976
Abstract Seismic stability of slopes across the Lower Mainland, British Columbia, is investigated based on a probabilistic solution of the Newmark sliding block analogy. The various seismicity sources in the region and the latest updates in sliding displacement prediction models are utilized to determine the probabilistic values for the sliding displacement of slopes at 10 sites across the southern Lower Mainland. The probabilistic displacement (Dprob) values of the considered 10 sites are used to assess the spatial variation of Dprob and the pseudo-static seismic coefficient for Dprob = 15 cm (k15) across the Lower Mainland. Based on spatial variation patterns observed at 7 training sites, regression analysis is employed to develop regional interpolation models to estimate Dprob and k15 values. The accuracy of the regression models to regionally interpolate Dprob and k15 values is confirmed considering model residuals. Calculated probabilistic values at 3 additional test sites confirm that the proposed models estimate Dprob and k15 values with minimal error in Dprob (< 5 cm). The application of the developed Dprob and k15 regional interpolation models is presented with an illustrative example from Coquitlam in the northeastern Lower Mainland.
Highlights Probabilistic seismic slope analysis is performed for sites in the Southern Lower Mainland. Ten different sites are considered, and the probabilistic seismic displacement of slopes are calculated for them. Spatial variations are assessed and regional predictive models are developed for estimation of probabilistic seismic displacements and pseudo-static coefficients. The developed regional models for probabilistic solution enhances the current pseudo-probabilistic approach.
Estimation of probabilistic seismic sliding displacement and pseudo-static coefficients (k15) for seismic stability assessment of slopes in the southern Lower Mainland, British Columbia
Yeznabad, Ali Fallah (Autor:in) / Molnar, Sheri (Autor:in) / El Naggar, M. Hesham (Autor:in) / Ghofrani, H. (Autor:in)
23.05.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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