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Earthquake Response Spectra of a Soft Soil Layer over a Half-Space

  • Earthquake response spectra as defined by Eurocode 8 (German NAD) are restricted to soils with shear wave velocities greater than 150 m/s. For soft soil layers e.g. of clay underlain by bedrock special investigations are required because resonance effects of the layer significantly influence the shape of the spectrum. Numerical investigations are normally based on a one-dimensional theory of horizontally polarized shear waves propagating in vertical direction. The paper describes a parametric study to define acceleration response spectra for a soft soil over a half-space for a wide range of soil layer heights and material parameters. Based on this study a simplified method to describe response spectra for the model of a soft soil layer underlain by a viscoelastic halfspace is given.

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  • Earthquake Response Spectra of a soft Soil Layer over a Half- Space Erdbebenantwortspektren einer weichen Bodenschicht ├╝ber einem Halbraum

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Author:Horst WerkleORCiDGND, Ioan Movila
Document Type:Report
Year of Publication:2015
Publishing Institution:HTWG Konstanz
Release Date:2015/11/23
Tag:Earthquake resonse spectra; Soft Soil Layer; Site effect; Geotechnical Earthquake Engineering
Edition:Revised Version November 2015
Page Number:211
Open Access?:Ja
Licence (German):License LogoCreative Commons - Namensnennung-Keine Bearbeitung