000019583 001__ 19583
000019583 005__ 20170118182327.0
000019583 04107 $$aeng
000019583 046__ $$k2017-01-09
000019583 100__ $$aShamoto, Yasuhiro
000019583 24500 $$aEvaluation of Seismic Earth Pressure Acting on Footing Embedded in Cohesive Soil Based on Centrifuge Tests

000019583 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019583 260__ $$b
000019583 506__ $$arestricted
000019583 520__ $$2eng$$aThis paper presents centrifuge test results for the seismic earth pressure acting on a footing embedded in cohesive soil. To clarify the effects of clay cohesion on the seismic earth pressure at the active and passive sides, two dynamic centrifuge tests were performed on a footing model supported by 2 × 2 piles embedded in an oil-based clay layer overlying a dense sand deposit. The cohesive soils were oil-based clays with cohesion values of 35 and 60 kN/m2. The study results indicate that the passive earth pressure of a clay can be estimated approximately based on Rankine’s theory. The relative displacement needed for the earth thrust at the passive side to reach a peak value was approximately 4%–6% of the embedment depth. The earth thrust at the active side acted on the footing in the form of a tensile force during strong shakings. However, the active earth pressure of a clay cannot be estimated by Rankine’s theory. The active earth pressure was smaller than the theoretical value probably because the ultimate extension force between the clay and footing was smaller than that caused by the failure of the clay, that is, the Mohr circle of the clay touched the Mohr–Coulomb failure envelope. The relative displacement needed for the earth thrust to reach the active state was approximately 1%–2% of the embedment depth.

000019583 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019583 653__ $$aSeismic earth pressure; Clay; Active earth pressure; Embedment effect; Rankine’s theory

000019583 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019583 720__ $$aShamoto, Yasuhiro$$iMano, Hideyuki$$iOdaka, Daisuke$$iTamura, Shuji
000019583 8560_ $$ffischerc@itam.cas.cz
000019583 8564_ $$s646173$$uhttps://invenio.itam.cas.cz/record/19583/files/3940.pdf$$yOriginal version of the author's contribution as presented on USB, paper 3940.
000019583 962__ $$r16048
000019583 980__ $$aPAPER