000018802 001__ 18802
000018802 005__ 20170118182242.0
000018802 04107 $$aeng
000018802 046__ $$k2017-01-09
000018802 100__ $$aMadabhushi, Gopal
000018802 24500 $$aCentrifuge Testing To Study the Effects of Air Injection on the Liquefaction-Induced Shallow Foundation Settlements

000018802 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018802 260__ $$b
000018802 506__ $$arestricted
000018802 520__ $$2eng$$aIn recent years, air injection has been proposed as a cost-effective liquefaction mitigation technique that can be implemented underneath existing structures as well as at new construction sites. The effective application of this particular technique however requires a clear identification of the most critical mechanisms of liquefaction-induced deformations and their mitigation through it. In this study, a series of centrifuge tests were conducted on the shallow foundation. The dominant mechanisms of settlements in the fully and air injected-partially saturated soils were identified, and the performance of air injection in minimizing their respective contributions were evaluated. The test results indicate that artificially injecting air bubbles into the liquefiable soil deposits changes the dominant deformation mechanisms. The foundation settlements are dominated by the deviatoric deformation mechanisms in the fully saturated soils, whereas the volumetric deformation mechanisms are more pronounced in the air-injected partially saturated soils. Injection of air bubbles into the liquefiable soil deposit markedly minimizes the deviatoric soil deformations underneath the shallow foundation and reduces the overall structural settlements. The majority of the settlements in these soils happen due to volumetric deformations mechanisms.

000018802 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018802 653__ $$aGeotechnical centrifuge; Liquefaction mitigation; Shallow foundations; Settlements; Partially saturated soils

000018802 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018802 720__ $$aMadabhushi, Gopal$$iZeybek, Abdulhakim
000018802 8560_ $$ffischerc@itam.cas.cz
000018802 8564_ $$s635213$$uhttps://invenio.itam.cas.cz/record/18802/files/2268.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2268.
000018802 962__ $$r16048
000018802 980__ $$aPAPER