000011040 001__ 11040
000011040 005__ 20141205155829.0
000011040 04107 $$aeng
000011040 046__ $$k2008-10-12
000011040 100__ $$aMondal, Goutam
000011040 24500 $$aEffect of Nonlinearity in Pier and Well Foundation on Seismic Response of Bridges

000011040 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011040 260__ $$b
000011040 506__ $$arestricted
000011040 520__ $$2eng$$aNonlinear seismic analysis of soil-well-pier system of a typical bridge supported on well foundation is carried out considering nonlinearity in piers and well. Bi-linear kinematic element is used to model nonlinearity in piers and well. Separation at the interface of soil and well is considered using compression-only gap elements. Analyses have been performed in two steps. In the first step, for a given acceleration time-history onedimensional free-field analysis of the site is performed using SHAKE2000 to obtain the motion at the base of the soil profile. In the next step, this motion is applied at the base of finite element model of soil-well-pier system in SAP2000. The analysis has been carried out for different values of depth of scour and for two different earthquake motions in longitudinal direction. It is found that bending moment demand exceed the capacity by 20% to 70% in piers and 30% to 75% in well when piers and well are assumed to behave linearly. Subsequently, nonlinearity in piers is introduced when well is considered as linear. The analysis results show that nonlinearity in piers does not considerably reduce the force response of well. Therefore, nonlinearities in both piers and well are introduced in the next step. In this case, 15% to 50% reduction in rotational ductility demand in piers is observed but now the well must have adequate rotational ductility.

000011040 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011040 653__ $$aBridge, well foundation, caisson foundation, seismic analysis, nonlinear analysis

000011040 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011040 720__ $$aMondal, Goutam$$iJain, Sudhir K.
000011040 8560_ $$ffischerc@itam.cas.cz
000011040 8564_ $$s756827$$uhttps://invenio.itam.cas.cz/record/11040/files/05-02-0101.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-02-0101.
000011040 962__ $$r9324
000011040 980__ $$aPAPER