000018533 001__ 18533
000018533 005__ 20170118182227.0
000018533 04107 $$aeng
000018533 046__ $$k2017-01-09
000018533 100__ $$aAdimoolam, Boominathan
000018533 24500 $$aResponse of Rubber-Soil Mixture Subjected To Cyclic Loading

000018533 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018533 260__ $$b
000018533 506__ $$arestricted
000018533 520__ $$2eng$$aTypically, base isolators are placed within the building structure for passive vibration control in earthquake prone areas. An economical version of base isolation can be achieved by using natural seismic isolators such as sand placed beneath the foundation. However due to the scarcity of sand and its inability to recover from the deformations suffered during an earthquake, natural seismic isolator made of soil- tyre mixture could potentially be a better solution. This will also serve as a sustainable solution for the recycling of scrap tyres. To find the suitability of soil-tyre mixture as an effective seismic isolator, a series of strain-controlled cyclic triaxial tests were performed on sand specimens compacted with different percentage of tyre content (0%, 30%, 50% and100%) at a confining pressure of 100 kPa. The results of cyclic triaxil tests shows decrease in the shear modulus values and increase in the hysteretic damping values of sand with the increase in tyre content. To demonstrate the effective use of sand-tyre mixture as an isolating base layer for buildings, the seismic response of a typical isolated footing embedded in sand-tyre mixture isolator (30% tyre content) was studied using a 3D finite element code ABAQUS. Sand and sand-tyre mixture isolator are modeled as visco-elastic materials. The foundation-isolating layersoil system was subjected to 1978 Miyagiken Oki earthquake time history of acceleration. It is found that the isolating layer with a thickness of two times the width of footing reduces the peak spectral acceleration by about 40% indicating the promising use of sand-tyre mixture as an isolating base layer for earthquake resistant design of low-rise buildings.

000018533 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018533 653__ $$aSeismic base isolation, sand - tyre mixture, cyclic triaxial test, 3D FE Modelling, ABAQUS.

000018533 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018533 720__ $$aAdimoolam, Boominathan$$iBanerjee, Subhadeep$$iJ.S, Dhanya
000018533 8560_ $$ffischerc@itam.cas.cz
000018533 8564_ $$s741428$$uhttps://invenio.itam.cas.cz/record/18533/files/1662.pdf$$yOriginal version of the author's contribution as presented on USB, paper 1662.
000018533 962__ $$r16048
000018533 980__ $$aPAPER