Numerical investigation of the seismic response of RC buildings on soil replaced with rubber–sand mixtures

Pitilakis, Kyriazis; Karapetrou, S.; Tsagdi, K.

doi:10.1016/j.soildyn.2015.09.018

Cited by 73 publications

(20 citation statements)

References 24 publications

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“…Geotechnical seismic isolation (GSI) system named in Tsang 1 is an emerging technology, which has attracted significant interest globally in the past decade, as briefly reviewed in Tsang and Pitilakis 2 . 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 .…”

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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“…Thus, rubber-soil mixtures for foundations are expected to offer ground motion 45 attenuation, to promote a new dynamic isolation scheme for structures and consequently, to mitigate 46 efficiently the earthquake risk (Tsang et al 2012; Pitilakis et al 2015). The dynamic properties and strength 47 nonlinear response of the wall is beyond the scope of this research study.…”

Section: Manuscriptmentioning

confidence: 99%

Use of rubberised backfills for improving the seismic response of integral abutment bridges

Argyroudis

Palaiochorinou

Mitoulis

et al. 2016

Bull Earthquake Eng

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Abstract:Reuse of the 1.5 billion waste tyres that are produced annually is a one of the major worldwide challenges, as waste tyres are toxic and cause pollution to the environment. In recognition of this problem, this paper introduces the reuse of tyres, in the form of derived aggregates in mixtures with granulated soil materials, as previous studies indicated the potential benefits of these materials in the seismic performance of structures. The objective of the present research study is to investigate whether use of rubberised backfills benefits the seismic response of Integral Abutment Bridges (IABs) by enhancing soil-structure interaction (SSI) effects. Numerical models including typical integral abutments on surface foundation with nonlinear conventional backfill material and its alternative form as soil-rubber mixtures are analysed and their response parameters are compared. The research is conducted on the basis of parametric analysis, which aims to evaluate the influence of different rubber-soil mixtures on the dynamic response of the abutment-backfill system under various seismic excitations, accounting for dynamic soil-abutment interaction. The results provide evidence that the use of rubberised backfill leads to reductions in the backfill settlements, the horizontal displacements of the bridge deck, the residual horizontal displacements of the top of the abutment and the pressures acting on the abutment, up to 55%, 18%, 43% and 47% respectively, with respect to a conventional backfill comprising of clean sand. Considerable amount of decrease in bending moments and shear forces on the abutment wall is also observed. Therefore, rubberised backfills offer promising solution to mitigate the earthquake risk, towards economic design with minimal damage objectives for the resilience of transportation networks. Abstract 10Reuse of the 1.5 billion waste tyres that are produced annually is a one of the major worldwide challenges, as 11 waste tyres are toxic and cause pollution to the environment. In recognition of this problem, this paper 12 introduces the reuse of tyres, in the form of derived aggregates in mixtures with granulated soil materials, as 13 previous studies indicated the potential benefits of these materials in the seismic performance of structures. 14 The objective of the present research study is to investigate whether use of rubberised backfills benefits the 15 seismic response of Integral Abutment Bridges (IABs) by enhancing soil-structure interaction (SSI) effects. 16Numerical models including typical integral abutments on surface foundation with nonlinear conventional 17 backfill material and its alternative form as soil-rubber mixtures are analysed and their response parameters 18 are compared. The research is conducted on the basis of parametric analysis, which aims to evaluate the 19 influence of different rubber-soil mixtures on the dynamic response of the abutment-backfill system under 20 various seismic excitations, accounting for dynamic soil-abutment interaction. The results provid...

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“…Tsang et al [15] proposed RSM around the foundation of structures for absorbing seismic energy and exerting a function similar to that of a cushion. Further work dealing with RSM can be found in [16][17][18][19]. Experimental studies based on shake-table tests by providing geotextiles and a smooth marble frictional base isolation system at the plinth level of a brick masonry building were performed by Nanda et al [20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Geotechnical Seismic Isolation System Based on Sliding Mechanism Using Stone Pebble Layer: Shake‐Table Experiments

Banović

Radnić

Grgić

2019

Shock and Vibration

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Using a shake-table, the effects of several stone pebble layer parameters (the layer thickness, the fraction of pebbles, the pebble compaction, the pebble moisture, the vertical contact stress below the foundation, and the effect of repeated excitations) on layer aseismic efficiency were investigated. For each considered parameter, a model of a rigid building on an aseismic layer was exposed to four different accelerograms, with three levels of peak ground acceleration (PGA), while all other layer parameters were kept constant. For each test, the characteristic displacements and accelerations were measured. Based on the test results, the main conclusions regarding the effect of the considered parameters on the effectiveness of the adopted aseismic layer are given.

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Numerical investigation of the seismic response of RC buildings on soil replaced with rubber–sand mixtures

Cited by 73 publications

References 24 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

Use of rubberised backfills for improving the seismic response of integral abutment bridges

Geotechnical Seismic Isolation System Based on Sliding Mechanism Using Stone Pebble Layer: Shake‐Table Experiments

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