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Comparison of 1-D Seismic Site Response Analysis Tools for Layered Liquefiable Deposits
Site response analysis is an important part of earthquake engineering to evaluate effects of local soil conditions on ground motions for appropriate characterization of the seismic hazard. A reliable prediction of site response for soil deposits is crucial for seismic evaluation of existing geotechnical structures and for design of new structures. This paper presents results of 1-D site response analyses based on work performed for a proposed offshore development in the seismically active Taiwan straits. The deposits in the project area included layered liquefiable deposits which required careful consideration in the site response analyses. The site response analyses were performed using two different open-source tools, DEEPSOIL and Cyclic 1D. The input parameter values for the analyses were modelled after results of a geotechnical investigation and the building code uniform hazard spectrum for the site. Both equivalent linear and non-linear approaches were adopted for the analyses and the suitability and limitations of each approach for liquefiable layers are discussed. The seismic site response results obtained from the two different tools are systematically compared from the standpoint of the peak ground acceleration, acceleration time histories, response spectra, and pore pressure generation. The effect of soil liquefaction on ground motions are also discussed.
Comparison of 1-D Seismic Site Response Analysis Tools for Layered Liquefiable Deposits
Site response analysis is an important part of earthquake engineering to evaluate effects of local soil conditions on ground motions for appropriate characterization of the seismic hazard. A reliable prediction of site response for soil deposits is crucial for seismic evaluation of existing geotechnical structures and for design of new structures. This paper presents results of 1-D site response analyses based on work performed for a proposed offshore development in the seismically active Taiwan straits. The deposits in the project area included layered liquefiable deposits which required careful consideration in the site response analyses. The site response analyses were performed using two different open-source tools, DEEPSOIL and Cyclic 1D. The input parameter values for the analyses were modelled after results of a geotechnical investigation and the building code uniform hazard spectrum for the site. Both equivalent linear and non-linear approaches were adopted for the analyses and the suitability and limitations of each approach for liquefiable layers are discussed. The seismic site response results obtained from the two different tools are systematically compared from the standpoint of the peak ground acceleration, acceleration time histories, response spectra, and pore pressure generation. The effect of soil liquefaction on ground motions are also discussed.
Comparison of 1-D Seismic Site Response Analysis Tools for Layered Liquefiable Deposits
Yu, Hao (author) / Ntambakwa, Eric (author) / Mendes, Bruno (author) / Rogers, Matthew (author)
Geo-Congress 2020 ; 2020 ; Minneapolis, Minnesota
Geo-Congress 2020 ; 215-224
2020-02-21
Conference paper
Electronic Resource
English
Comparison of 1-D Seismic Site Response Analysis Tools for Layered Liquefiable Deposits
| British Library Conference Proceedings | 2020
Effects of layered liquefiable deposits on the seismic response of an underground structure
| British Library Online Contents | 2018
Effects of layered liquefiable deposits on the seismic response of an underground structure
| British Library Online Contents | 2018