Numerical Modelling of Seismic Site Effects Incorporating Non-linearity and Groundwater Level Changes

Journal article


Publication Details

Author(s): Ehret D, Rohn J, Hannich D, Grandas C, Huber G
Journal: Journal of Earth Science
Publisher: Springer Verlag (Germany)
Publication year: 2010
Volume: 21
Journal issue: 6
Pages range: 931-940
ISSN: 1674-487X


Abstract


In the past decades, the necessity for detailed earthquake microzonation studies was recognized worldwide. Therefore, different approaches were established and applied. Unfortunately, the majority of these approaches are not based on pre-existing field data but require extensive seismic measurements and investigations. Furthermore, these approaches incorporate non-linearity inadequately and cannot take groundwater level changes into account. For this purpose, notably numerical models are most suitable. These models require a good knowledge of the local geological conditions (especially of the uppermost unconsolidated units), information about the geotechnical parameters of these units, and a hydrogeological model of the investigated area. Most of this information can be obtained from geotechnical investigations and surveys that have already been carried out in most densely populated areas. In a case study for Bucharest City, non-linear analyses were performed using software that is based on the visco-hypoplastic constitutive law. The results indicate that groundwater level changes have an important influence on duration and amplitude of ground response and thus should be considered for seismic microzonation studies. This approach can be used to display site effects and to identify different microzones taking different earthquake magnitudes and groundwater levels into account. © 2010 China University of Geosciences and Springer-Verlag Berlin Heidelberg.



FAU Authors / FAU Editors

Rohn, Joachim Prof. Dr.
Professur für Angewandte Geologie


External institutions
Karlsruhe Institute of Technology (KIT)


How to cite

APA:
Ehret, D., Rohn, J., Hannich, D., Grandas, C., & Huber, G. (2010). Numerical Modelling of Seismic Site Effects Incorporating Non-linearity and Groundwater Level Changes. Journal of Earth Science, 21(6), 931-940. https://dx.doi.org/10.1007/s12583-010-0146-5

MLA:
Ehret, Dominik, et al. "Numerical Modelling of Seismic Site Effects Incorporating Non-linearity and Groundwater Level Changes." Journal of Earth Science 21.6 (2010): 931-940.

BibTeX: 

Last updated on 2018-07-08 at 03:30