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Linear one-dimensional site response analysis in the presence of stiffness-less free surface for certain power-law heterogeneities

Garcia-Suarez, Joaquin and Seylabi, Elnaz and Asimaki, Domniki (2021) Linear one-dimensional site response analysis in the presence of stiffness-less free surface for certain power-law heterogeneities. Soil Dynamics and Earthquake Engineering, 141 . Art. No. 106530. ISSN 0267-7261. https://resolver.caltech.edu/CaltechAUTHORS:20200624-131552385

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Abstract

We revisit previous results in small-strain One-dimensional Site Response Analysis of heterogeneous soil deposits. Specifically, we focus on sites whose shear modulus distribution is described by means of a power law that yields zero stiffness at the free surface. First, we show that in some cases (which we characterize in detail) considerations of energy finitude should prevail over considerations of vanishing tractions at the free-surface, as these may pose acuter constrains. We re-evaluate previous contributions in light of this result. Second, we analyze the previously-reported occurrence of “energy accumulation in upper layers”, providing a physical explanation for it. In passing, we supply estimates of the natural frequencies, and compare these with our previous results.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/j.soildyn.2020.106530DOIArticle
https://doi.org/10.31224/osf.io/8fqatDOIDiscussion Paper
https://github.com/jgarciasuarez/1DSR_stiffnessless_surfaceRelated ItemData
ORCID:
AuthorORCID
Garcia-Suarez, Joaquin0000-0001-8830-4348
Seylabi, Elnaz0000-0003-0718-372X
Asimaki, Domniki0000-0002-3008-8088
Additional Information:© 2020 Elsevier Ltd. Received 20 August 2020, Revised 8 October 2020, Accepted 29 November 2020, Available online 22 December 2020. CRediT authorship contribution statement: Joaquin Garcia-Suarez: Conceptualization, Formal analysis, Writing - original draft, Validation. Elnaz Seylabi: Supervision, Writing - review & editing. Domniki Asimaki: Supervision, Writing - review & editing. The authors declare no conflict of interests.
Subject Keywords:Geotechnical engineering; Site response analysis; Vanishing stiffness
Record Number:CaltechAUTHORS:20200624-131552385
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20200624-131552385
Official Citation:Joaquin Garcia-Suarez, Elnaz Seylabi, Domniki Asimaki, Linear one-dimensional site response analysis in the presence of stiffness-less free surface for certain power-law heterogeneities, Soil Dynamics and Earthquake Engineering, Volume 141, 2021, 106530, ISSN 0267-7261, https://doi.org/10.1016/j.soildyn.2020.106530. (http://www.sciencedirect.com/science/article/pii/S0267726120311568)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:104013
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:24 Jun 2020 20:27
Last Modified:13 Jan 2021 20:00

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