Seismic performance of thinner rubber-sand mixture cushion reinforced by geosynthetics

Geosynthetics International, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 21

Published: April 18, 2025

Rubber-sand mixture (RSM) has proven to be a cost-effective fill material, serving as seismic isolation cushion between natural site soil and structure foundations. Although the effect improves with increased thickness, stability of superstructure tends decrease while costs rise greater thickness. Hence, it is crucial minimize thickness attaining optimal objective. This study experimentally assesses performance thinner RSM cushions reinforced by geosynthetics, specifically geocells, geotextiles, geogrids. The effects mass, excitation mode on coefficient geosynthetic-reinforced rubber-sand (GRRSMC) are thoroughly evaluated. results indicate that exceeds unreinforced ones same Among different reinforcements, geotextile provides highest efficiency, followed geocell geogrid. GRRSMC primarily attributed low shear modulus. Additionally, geosynthetic reinforcement enhances vertical modulus, which helps attenuate waves. These findings validate viable low-cost approach, ensuring stability, reducing

Language: Английский

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Preface for the special issue on geotechnical seismic isolation (GSI)

Bulletin of Earthquake Engineering, Journal Year: 2023, Volume and Issue: 21(8), P. 3745 - 3748

Published: May 4, 2023

Language: Английский

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An eco-sustainable innovative geotechnical technology for the structures seismic isolation, investigated by FEM parametric analyses

Bulletin of Earthquake Engineering, Journal Year: 2023, Volume and Issue: 21(10), P. 4851 - 4875

Published: June 14, 2023

Abstract Geotechnical Seismic Isolation (GSI) is an innovative technique for protecting structures in earthquake-prone areas. The main idea to improve the foundation soil so that seismic energy partially dissipated within GSI before being transmitted structure. Among other materials proposed improvement, gravel-rubber mixtures (GRMs), with rubber grains manufactured from end-of-life tires, have attracted significant research interest thanks their good mechanical properties. GRMs also represent a modern recycling system reduce stockpile of scrap tires worldwide. present study investigated numerically effect GRM layer located underneath shallow foundations real structure typical reinforced concrete building southern Italy. A Finite Element Modelling (FEM) was carried out evaluate overall static and dynamic behaviour soil-GRMs-structure system. Three FEM models were performed without layer, varying thickness inputs. comparisons among allow us assess performance as new eco-sustainable solution isolation structures.

Language: Английский

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Geotechnical seismic isolation based on high-damping polyurethane: centrifuge modelling

Bulletin of Earthquake Engineering, Journal Year: 2024, Volume and Issue: 22(4), P. 2001 - 2023

Published: Jan. 9, 2024

Abstract Geotechnical seismic isolation (GSI) is a new category of low-damage resilient design methods that are in direct contact with geomaterials and which the mechanism primarily involves geotechnics. Various materials have been explored for placing around foundation system layer form to facilitate beneficial effects dynamic soil-foundation-structure interaction, as one GSI mechanisms. To reduce thickness ensure uniformity its material properties, use thin homogeneous high-damping polyurethane (HDPU) was investigated this study via centrifuge modelling. HDPU sheets were installed three different configurations at interface between structural surrounding soils realising GSI. It found using can provide excellent all configurations. The average rates demand reduction amongst eight earthquake events ranged from 35 80%. A clear correlation period-lengthening ratio percentage be observed One periphery only particularly suitable retrofitting existing structures does not require making changes systems or architectural features.

Language: Английский

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Shaking table test of a high-speed railway bridge with combined seismic isolation systems in a nine-degree seismic region

Structures, Journal Year: 2024, Volume and Issue: 63, P. 106270 - 106270

Published: April 11, 2024

Language: Английский

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A comparative life cycle assessment of recycled tire rubber applications in sustainable earthquake-resistant construction

Resources Conservation and Recycling, Journal Year: 2024, Volume and Issue: 211, P. 107860 - 107860

Published: Aug. 23, 2024

Language: Английский

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Earthquake Consideration in Architectural Design: Guidelines for Architects

Sustainability, Journal Year: 2023, Volume and Issue: 15(18), P. 13760 - 13760

Published: Sept. 15, 2023

Architectural planners must give due consideration to seismic events as they present substantial hazards both critical infrastructure and human well-being. This research investigates the fundamental concepts methodologies employed by architects enhance resilience in buildings ensure safety of occupants. It emphasizes importance hazard assessment, design standards, structural systems, cutting-edge technology reducing earthquake-related dangers. A mixed method has been adopted: surveying literature, applying inductive reasoning, conducting a case study. highlights value interdisciplinary cooperation between engineers, geotechnical experts, resilient built environments that can survive pressures unleashed occurrences. The findings demonstrated architectural solutions approaches might significantly impact earthquake risk reduction techniques non-seismic locations. In cases taken, different techniques—in some multiple techniques—had applied based on buildings’ geographical locations, sizes, shapes. Finally, we prepared checklist for these strategies, including mass distribution, openings, rooftop structures, other considerations be make easier.

Language: Английский

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An advanced assessment framework for seismic resilience of railway continuous girder bridge with multiple spans considering 72h golden rescue requirements

Soil Dynamics and Earthquake Engineering, Journal Year: 2023, Volume and Issue: 177, P. 108370 - 108370

Published: Dec. 3, 2023

Language: Английский

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The Role of Redundancy of Infrastructures on the Seismic Resilience (SR) of Sustainable Communities

Sustainability, Journal Year: 2023, Volume and Issue: 15(15), P. 11849 - 11849

Published: Aug. 1, 2023

Infrastructures are fundamental links in sustainable communities, and they need to remain at a level of functionality during after natural events. In particular, assessing the seismic resilience infrastructures has become an interesting topic earthquake engineering. The estimation indirect losses due events is still under discussion, especially for infrastructures. this regard, paper focused on including redundancy inside analytical formulation (SR). main idea explore possibility alternative that allow circulation services people when flow original infrastructure interrupted or reduced. This goal preserving communities. Therefore, proposed consists considering reduction redundant by introducing concept redundancy. costs were herein defined with new includes calculation SR. presented case study implements aim demonstrate efficiency methodology. Several levels infrastructural have been applied SR subjected ensemble 100 motions order scope role improving system.

Language: Английский

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Probabilistic formulation for the q-factor of piles with damping pre-hole

Bulletin of Earthquake Engineering, Journal Year: 2022, Volume and Issue: 21(8), P. 3749 - 3775

Published: Aug. 23, 2022

Language: Английский

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