Seismic isolation using granulated tire–soil mixtures for less‐developed regions: experimental validation

Xiong, Wei; Li, Yaozhuang

doi:10.1002/eqe.2315

Cited by 70 publications

(21 citation statements)

References 13 publications

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“…Rubber‐soil mixtures (RSM) have firstly been proposed as a suitable foundation material for forming a low‐stiffness isolation layer with controllable properties, 3 which have been proven by numerous studies, 4–7 whilst other materials such as expanded polystyrene geofoam are currently being explored for similar purpose 8 . Waste tyre rubber has been considered as a desirable candidate for making RSM, 9 rendering GSI system an environmentally sound and low‐cost technology that is affordable for the impoverished parts of the world, where earthquake disasters often exacerbate poverty 10–12 . All these contribute to various United Nations Sustainable Development Goals in relation to resilient infrastructure and cities, sustainable resource consumption and waste management, as well as reduction of poverty and inequality.…”

Section: Introductionmentioning

confidence: 99%

Performance of geotechnical seismic isolation system using rubber‐soil mixtures in centrifuge testing

Tsang

Tran

Hung

et al. 2020

Earthq Engng Struct Dyn

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Geotechnical seismic isolation (GSI) system involves the dynamic interaction between structure and low‐modulus foundation material, such as rubber‐soil mixtures (RSM). Whilst numerical studies have been carried out to demonstrate the potential benefits of GSI‐RSM system, experimental research is indispensable for confirming its isolation mechanism and effectiveness in reducing structural demand. In this regard, centrifuge modelling with an earthquake shaker under an acceleration field of 50 g adopted in this study can mimic the actual nonlinear dynamic response characteristics of RSM and subsoil in a coupled soil‐foundation‐structure system. This is the first time the performance of GSI‐RSM system was examined in a geotechnical centrifuge. It was found that an average of 40‐50% reduction of structural demand can be achieved. The increase in both the horizontal and rotation responses of the foundation was also evidenced. The unique augmented rocking mechanism with reversible foundation rotation was highlighted.

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Section: Introductionmentioning

confidence: 99%

Performance of geotechnical seismic isolation system using rubber‐soil mixtures in centrifuge testing

Tsang

Tran

Hung

et al. 2020

Earthq Engng Struct Dyn

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“…Tsang presented the geotechnical seismic isolation (GSI) system as an efficient, cost‐effective and eco‐friendly seismic isolation for earthquake‐prone developing countries. By using granulated or stripped tire‐soil mixtures as an isolation layer, this GSI system exhibited good seismic isolation in both the horizontal and vertical directions, as demonstrated in subsequent numerical studies and experimental surveys . Another system with circular cone‐type surface, called the ball‐in‐cone isolator, was introduced by Kasalanti et al and subsequently studied by Chang and Spencer and Harvey et al .…”

Section: Introductionmentioning

confidence: 84%

Introduction of the convex friction system (CFS) for seismic isolation

Xiong

Zhang

Jiang³

et al. 2016

Struct. Control Health Monit.

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SUMMARYThis work introduces an innovative seismic isolation system named the convex friction system (CFS). This newly introduced isolation system has a sliding concavity with a circular cone-type surface, and exhibits some distinct features compared to conventional isolation techniques, such as increased uplift stability, improved self-centring capacity, and resonance dodge when subjected to near-fault earthquakes. A series of comprehensive analytical and numerical investigations are performed to verify these features of the CFS. First, the force-displacement relation of the CFS is established to describe the underlying philosophy of the system. The analytical model is then incorporated into numerical simulations to evaluate the seismic isolation performance of the CFS. Various ground accelerations, such as near-fault shakings, are included in these numerical calculations. Furthermore, the numerical results are rigorously investigated to illustrate the feasibility of the CFS. Finally, the limitations of the CFS study are discussed, and conclusions are drawn. The analytical and numerical results show that the CFS performs well in seismic isolation applications. The structural response can be reduced by approximately 30% with the CFS when compared to that with the Curved Surface Slider (CSS) with a spherical-surface concavity for some near-fault earthquakes, which verifies the aforementioned advantages of the CFS.

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“…Prema dostupnim informacijama, do sada je objavljeno vrlo malo radova u kojima se istraživala "jeftina" seizmička izolacija osnove građevine pomoću prirodnih materijala. Rezultati nekih dosadašnjih istraživanja mogu se naći u [1][2][3][4]. U ovom su radu prikazani rezultati eksperimentalne studije o efikasnosti primjene sloja od prirodnih kamenih oblutaka ispod temelja na smanjenje potresnih sila na konstrukcije.…”

Section: Uvodunclassified

Seismic base isolation using a layer of natural stone pebbles

Banović¹,

Radnić²,

Grgić³

2018

Common Foundations 2018 - uniSTem: 6th Congress of Young Researchers in the Field of Civil Engineering and Related Sciences

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Prikazani su rezultati eksperimentalne studije efikasnosti seizmičke izolacije pomoću sloja od prirodnih kamenih oblutaka. Ispitivani su modeli krute i srednje krute zgrade. Razmatrani su slučajevi oslanjanja modela na krutu podlogu te na četiri različite podloge od oblutaka (tanka i debela podloga sa sitnom i krupnom frakcijom oblutaka). Aplicirana su četiri različita horizontalna akcelerograma i mjereni karakteristični pomaci, ubrzanja i deformacije na testiranim modelima. Sve deformacije/naprezanja modela ostala su u elastičnom području. Zaključeno je da efikasnost sloja od kamenih oblutaka ispod temelja, u odnosu na klasično rješenje s krutom podlogom, značajno ovisi o tipu apliciranog akcelerograma i relativno malo o razmatranim debljinama sloja i frakcijama oblutaka. Rješenje se pokazalo vrlo efikasnim, uz smanjenje potresnih sila čak do oko 70 %. Ključne riječi: potresna platforma, seizmička izolacija, prirodni kameni oblutci

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Seismic isolation using granulated tire–soil mixtures for less‐developed regions: experimental validation

Cited by 70 publications

References 13 publications

Performance of geotechnical seismic isolation system using rubber‐soil mixtures in centrifuge testing

Performance of geotechnical seismic isolation system using rubber‐soil mixtures in centrifuge testing

Introduction of the convex friction system (CFS) for seismic isolation

Seismic base isolation using a layer of natural stone pebbles

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