000009355 001__ 9355
000009355 005__ 20141205150158.0
000009355 04107 $$aeng
000009355 046__ $$k2008-10-12
000009355 100__ $$aAhmadi, Mohammad M.
000009355 24500 $$aDynamic Analysis of Piles in Sand Based on Soil-Pile Interaction

000009355 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000009355 260__ $$b
000009355 506__ $$arestricted
000009355 520__ $$2eng$$aSeismic soil-pile-structure interaction is a complex phenomenon that can affect the response of structures significantly during earthquake. Considering complexities which exist in soil-pile-structure interaction problems and the lack of theoretical bases, it is necessary to use numerical methods for analyzing soil-pile-structure interaction problems. In this research program, a three dimensional modeling procedure is carried out to study the behavior of piles under earthquake loading. Dynamic analyses were carried out on the model containing the pile and its surrounding sand. To verify the model, analyses are performed using harmonic excitation. Dynamic analyses are also carried out with KOBE earthquake record applied at the bedrock level as acceleration time histories. In all analyses it is assumed that bedrock is at the bottom of the model. The soil is modeled as an elastoplastic material using the Mohr-Coulomb failure criteria. Contact elements are used at soil-pile interface to model the gap behind the pile and the compression in front of it. The side boundaries are constrained against horizontal direction and the bottom boundaries are constrained against both horizontal and vertical directions. In addition quiet boundaries are used to eliminate the “box effect” (i.e., the reflection of waves back into the model at the boundaries). The F.E. software ABAQUS, is used for all analyses in this research program. A sensitivity analysis is performed to study the effect of sandy soil parameters on the lateral seismic behavior of pile. Bending moment and shear force diagrams together with predicted deflections along the pile are also presented in this study.

000009355 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009355 653__ $$aSoil-pile interaction, Dynamic lateral loading, Numerical modeling, Sand

000009355 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000009355 720__ $$aAhmadi, Mohammad M.$$iEhsani, Mahdi
000009355 8560_ $$ffischerc@itam.cas.cz
000009355 8564_ $$s248539$$uhttps://invenio.itam.cas.cz/record/9355/files/14-0140.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 14-0140.
000009355 962__ $$r9324
000009355 980__ $$aPAPER