The Effect of Input Motion Selection Strategies on Nonlinear Ground Response Predictions

Guzel, Yusuf; Elia, Gaetano; Rouainia, Mohamed

doi:10.7712/120117.5679.17209

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM 2017

DOI: 10.7712/120117.5679.17209

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The Effect of Input Motion Selection Strategies on Nonlinear Ground Response Predictions

Yusuf Guzel¹,

Gaetano Elia²,

Mohamed Rouainia³

Abstract: Abstract. Ground response prediction is a key tool in the seismic

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Cited by 3 publications

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Advanced dynamic nonlinear schemes for geotechnical earthquake engineering applications: a review of critical aspects

Elia

Rouainia

2022

Geotech Geol Eng

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Nonlinear time domain numerical approaches together with elasto-plastic effective stress soil constitutive models are nowadays available to geotechnical researchers and practitioners interested in geotechnical earthquake engineering. The use of such advanced two- and three-dimensional schemes allows the analysis and design of complex geotechnical structures within a performance-based framework, considering the build-up of excess pore water pressure during the earthquake, dynamic interaction between the soil deposit and the above surface buildings and infrastructures and effects of multi-directional seismic loading. Within this context, the paper focuses on the dynamic finite element (FE) method and presents a review of the key ingredients governing its predictive capabilities. These include i) the description of the fully coupled solid–fluid interaction formulation and time integration, ii) the calibration of Rayleigh damping and the soil constitutive model parameters, iii) prescription of the boundary conditions for the generated mesh and iv) input motion selection/scaling strategies. For each of the above points, the paper summarises the current knowledge and best practice, with the aim of providing protocols for a confident application of nonlinear FE schemes to evaluate the performance of critical geotechnical infrastructures. Useful hints to promote familiarity of advanced nonlinear soil dynamic analysis among geotechnical practitioners and to indicate areas for further improvement are also highlighted.

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Advanced dynamic nonlinear schemes for geotechnical earthquake engineering applications: a review of critical aspects

Elia

Rouainia

2022

Geotech Geol Eng

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Site Response Analyses with Different Stiffness Profiles and Input Motion Variability

Guzel

2023

Geotech Geol Eng

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Influence of Input Motion Scaling Methods on Decoupled Ssi Dynamic Analysis

Guzel

GÜZEL

2022

Eskişehir Osmangazi Üniversitesi Mühendislik Ve Mimarlık Fakültesi Dergisi

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Propagation of seismic waves through soil deposits may considerably alter theircharacteristics at surface. This ultimately influences the seismic performance of structures.The influences of soil deposits are included in seismic codes (e.g. Eurocode 8, EC8) by meansof proposed design response spectra for different soil classes used in design or retrofittingof structures. Nevertheless, a smooth design response spectrum cannot always representspectral response of an actual input motion over an engineering period of interest due toits irregular spectral shape. Subsequently, the seismic performance of a structure may beinsufficient when a design response spectrum is used. The interaction between soil andstructure may also affect the structural behaviour. This study aims to demonstrate theimpact of adoption of input motions and soil deposits with soil classes B, C and D on theseismic behaviour of one-bay, 1-storey structure modelled in OpenSEES For this purpose,two different approaches are chosen; (i) seven input motions recorded on ground surfaceare modified and applied to the model, (ii) seven outcrop motions are scaled according toEC8 and processed through the ideal soil deposits by conducting nonlinear site responseanalysis, then applied to the model. The results indicate that the model is exposed to moredrift responses when it is on softer soil deposit. In addition, imposing input motionsobtained at surface from nonlinear site response analysis cause higher drift responses thandirectly applying input motions.

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The Effect of Input Motion Selection Strategies on Nonlinear Ground Response Predictions

Abstract: Abstract. Ground response prediction is a key tool in the seismic

Cited by 3 publications

References 16 publications

Advanced dynamic nonlinear schemes for geotechnical earthquake engineering applications: a review of critical aspects

Advanced dynamic nonlinear schemes for geotechnical earthquake engineering applications: a review of critical aspects

Site Response Analyses with Different Stiffness Profiles and Input Motion Variability

Influence of Input Motion Scaling Methods on Decoupled Ssi Dynamic Analysis

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