Shaking table study on rubber-sand mixture cored composite block as low-cost isolation bearing for rural houses

Journal of Building Engineering, Journal Year: 2023, Volume and Issue: 76, P. 107413 - 107413

Published: July 22, 2023

Language: Английский

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Rubber-sand infilled soilbags as seismic isolation cushions: experimental validation

Geosynthetics International, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 14

Published: March 23, 2024

This study proposes soil bags filled with a rubber sand mixture (SFRSM) to enhance the stability of layers for effective seismic isolation. To evaluate dynamic characteristics SFRSM, large-scale cyclic simple shear tests were conducted investigate effects content, vertical pressure, displacement amplitude, fill percentage, and laying scheme. Furthermore, shaking table carried out impact vibration intensity frequency on isolation SFRSM layers. The results indicate that (1) exhibits lower modulus higher damping than traditional rubber-sand layers, suggesting superior energy dissipation capabilities. (2) influenced by percentage scheme, indicating potential creating resilient isolators suited various conditions. (3) isolating efficacy is due its high-frequency vibrations, threshold reducing as more are implemented. In summary, these experimental provide evidence proposed innovative strategy enhances strength stiffness original layer, making it well-suited design applications in low-rise buildings less-developed regions.

Language: Английский

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Seismic response of low-rise buildings with eco-rubber geotechnical seismic isolation (ERGSI) foundation system: numerical investigation

Bulletin of Earthquake Engineering, Journal Year: 2022, Volume and Issue: 21(8), P. 3797 - 3821

Published: Dec. 9, 2022

Language: Английский

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Field testing of gravel-rubber mixtures as geotechnical seismic isolation

Bulletin of Earthquake Engineering, Journal Year: 2022, Volume and Issue: 21(8), P. 3905 - 3922

Published: Oct. 26, 2022

Abstract We present the results of forced-vibration experiments performed at large-scale prototype structure EuroProteas founded on gravel-rubber mixture (GRM) layers acting as a means Geotechnical Seismic Isolation (GSI). Three GRM with different rubber content per weight (0%, 10%, and 30%) but same mean grain size ratio were used foundation soil. Each GRM-structure system was subjected to harmonic forces in wide range excitation frequencies force amplitude. It found that 0.5 m thick soil layer 30% can effectively isolate structure. The strong effect fraction expressed detected period elongation dominating rocking component which leads more “rigid-body” response Moreover, developed base shear moment are significantly reduced regardless frequency, while increased damping important energy dissipation demonstrate effectiveness layer. Overall, experimental demonstrated use GSI be considered low-cost alternative seismic isolation technique.

Language: Английский

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Configuration of a gravel-rubber geotechnical seismic isolation system from laboratory and field tests

Soil Dynamics and Earthquake Engineering, Journal Year: 2024, Volume and Issue: 178, P. 108463 - 108463

Published: Jan. 14, 2024

Language: Английский

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

Journal of Earthquake Engineering, Journal Year: 2024, Volume and Issue: 28(9), P. 2422 - 2439

Published: Feb. 12, 2024

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

Language: Английский

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Dynamic leaching assessment of recycled polyurethane-coated tire rubber for sustainable engineering applications

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 495, P. 153351 - 153351

Published: June 21, 2024

Assessing the material ramifications of waste tire rubber stands as a pivotal endeavor for its practical utility. Dynamic leaching analysis emerges indispensable in delineating potentialities within sustainable engineering domains. Waste materials stemming from recycling industries, notably polyurethane-coated (PUcR), may exhibit promising viability owing to attenuated leaching, thus fostering circular economy paradigm. Towards this end, up-flow column percolation tests were conducted on recycled rubber-soil mixture (RSM) alongside PU-coated (PUcRSM). Analysis through Inductively Coupled Plasma-Atomic Emission Spectroscopy (ICP-AES) unveiled dynamics assorted metals RSM and PUcRSM, showcasing markedly diminished cumulative zinc content (by 99.4 %) coupled with mitigated electrical conductivity, redox potential, eluate pH. Leveraging HYDRUS-1D analytical modeling predicated advection–dispersion equation further underscored these insights. These findings suggest that PUcR presents itself viable option, distinguished by leachability, suitable wide array applications. applications include vibration damping infrastructure, tunnel linings, asphalt roads, rubberized concrete, lightweight backfill bridges retaining walls, among others. This initiative will contribute substantial quantity over 1 billion used tires produced annually, ultimately supporting ethos assured adaptable repurposing industries.

Language: Английский

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Seismic fragility assessment of non-invasive geotechnical seismic isolation for existing bridges

Soil Dynamics and Earthquake Engineering, Journal Year: 2025, Volume and Issue: 192, P. 109266 - 109266

Published: Feb. 8, 2025

Language: Английский

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Research on earthquake mitigation of quasi-phononic crystal metaconcrete foundation based on shaking table test

Mechanics of Advanced Materials and Structures, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 12

Published: March 2, 2025

Language: Английский

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Analyses of a Gravel-Rubber Mixture for Isolating a RC Building

Geotechnical, geological and earthquake engineering, Journal Year: 2025, Volume and Issue: unknown, P. 349 - 360

Published: Jan. 1, 2025

Language: Английский

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