Energy Dissipation Efficiency of Geotechnical Seismic Isolation with Gravel-Rubber Mixtures: Insights from FE Non-Linear Numerical Analysis

Davide Forcellini; Gabriele Chiaro; Alessandro Palermo; Laura Banasiak; Hing-Ho Tsang

doi:10.1080/13632469.2024.2312915

Energy Dissipation Efficiency of Geotechnical Seismic Isolation with Gravel-Rubber Mixtures: Insights from FE Non-Linear Numerical Analysis

Davide Forcellini, Gabriele Chiaro (Lead / Corresponding author), Alessandro Palermo, Laura Banasiak, Hing-Ho Tsang

Civil Engineering

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Abstract

This paper provides new and useful insights into the performance and efficiency of geotechnical seismic isolation (GSI) systems with gravel-rubber mixtures containing 10%, 25% and 40% volumetric rubber content (VRC). Finite element numerical models were developed in OpenSees and subjected to sinusoidal ground motions with varying input base acceleration and frequency. The best seismic performance was attained for VRC = 40% at a frequency of 8 Hz. Using a newly developed GSI efficiency index, the energy dissipation efficiency of VRC = 40% was found to vary between good to excellent, while that of VRC = 10% and 25% is poor.

Original language	English
Pages (from-to)	2422-2439
Number of pages	18
Journal	Journal of Earthquake Engineering
Volume	28
Issue number	9
Early online date	12 Feb 2024
DOIs	https://doi.org/10.1080/13632469.2024.2312915
Publication status	Published - 2024

Keywords

Energy dissipation
OpenSees
geotechnical seismic isolation (GSI)
gravel-rubber mixtures
non-linear numerical modelling

ASJC Scopus subject areas

Safety, Risk, Reliability and Quality

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10.1080/13632469.2024.2312915Licence: CC BY-NC

Final published versionFinal published version, 13.7 MBLicence: CC BY-NC

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title = "Energy Dissipation Efficiency of Geotechnical Seismic Isolation with Gravel-Rubber Mixtures: Insights from FE Non-Linear Numerical Analysis",

abstract = "This paper provides new and useful insights into the performance and efficiency of geotechnical seismic isolation (GSI) systems with gravel-rubber mixtures containing 10%, 25% and 40% volumetric rubber content (VRC). Finite element numerical models were developed in OpenSees and subjected to sinusoidal ground motions with varying input base acceleration and frequency. The best seismic performance was attained for VRC = 40% at a frequency of 8 Hz. Using a newly developed GSI efficiency index, the energy dissipation efficiency of VRC = 40% was found to vary between good to excellent, while that of VRC = 10% and 25% is poor.",

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Energy Dissipation Efficiency of Geotechnical Seismic Isolation with Gravel-Rubber Mixtures: Insights from FE Non-Linear Numerical Analysis. / Forcellini, Davide; Chiaro, Gabriele (Lead / Corresponding author); Palermo, Alessandro et al.
In: Journal of Earthquake Engineering, Vol. 28, No. 9, 2024, p. 2422-2439.

Research output: Contribution to journal › Article › peer-review

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T2 - Insights from FE Non-Linear Numerical Analysis

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AU - Banasiak, Laura

AU - Tsang, Hing-Ho

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AB - This paper provides new and useful insights into the performance and efficiency of geotechnical seismic isolation (GSI) systems with gravel-rubber mixtures containing 10%, 25% and 40% volumetric rubber content (VRC). Finite element numerical models were developed in OpenSees and subjected to sinusoidal ground motions with varying input base acceleration and frequency. The best seismic performance was attained for VRC = 40% at a frequency of 8 Hz. Using a newly developed GSI efficiency index, the energy dissipation efficiency of VRC = 40% was found to vary between good to excellent, while that of VRC = 10% and 25% is poor.

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Energy Dissipation Efficiency of Geotechnical Seismic Isolation with Gravel-Rubber Mixtures: Insights from FE Non-Linear Numerical Analysis

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Keywords

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