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Footings under seismic loading: Analysis and design issues with emphasis on bridge foundations

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dc.contributor.author Mylonakis, G en
dc.contributor.author Nikolaou, S en
dc.contributor.author Gazetas, G en
dc.date.accessioned 2014-03-01T01:24:25Z
dc.date.available 2014-03-01T01:24:25Z
dc.date.issued 2006 en
dc.identifier.issn 0267-7261 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/17255
dc.subject Dynamics en
dc.subject Footings en
dc.subject Impedance en
dc.subject Kinematic response en
dc.subject Numerical methods en
dc.subject Soil-structure interaction en
dc.subject.classification Engineering, Geological en
dc.subject.classification Geosciences, Multidisciplinary en
dc.subject.other Bridge piers en
dc.subject.other Damping en
dc.subject.other Dynamic response en
dc.subject.other Foundations en
dc.subject.other Graphic methods en
dc.subject.other Numerical methods en
dc.subject.other Seismology en
dc.subject.other Stiffness en
dc.subject.other Structural analysis en
dc.subject.other Kinematic response en
dc.subject.other Spread footings en
dc.subject.other Soil structure interactions en
dc.subject.other bridge en
dc.subject.other footing en
dc.subject.other kinematics en
dc.subject.other soil-structure interaction en
dc.subject.other Agrostis en
dc.title Footings under seismic loading: Analysis and design issues with emphasis on bridge foundations en
heal.type journalArticle en
heal.identifier.primary 10.1016/j.soildyn.2005.12.005 en
heal.identifier.secondary http://dx.doi.org/10.1016/j.soildyn.2005.12.005 en
heal.language English en
heal.publicationDate 2006 en
heal.abstract The paper provides state-of-the-art information on the following aspects of seismic analysis and design of spread footings supporting bridge piers: (1) obtaining the dynamic stiffness (""springs"" and ""dashpots"") of the foundation; (2) computing the kinematic response; (3) determining the conditions under which foundation-soil compliance must be incorporated in dynamic structural analysis; (4) assessing the importance of properly modeling the effect of embedment; (5) elucidating the conditions under which the effect of radiation damping is significant; (6) comparing the relative importance between kinematic and inertial response. The paper compiles an extensive set of graphs and tables for stiffness and damping in all modes of vibration (swaying, rocking, torsion), for a variety of soil conditions and foundation geometries. Simplified expressions for computing kinematic response (both in translation and rotation) are provided. Special issues such as presence of rock at shallow depths, the contribution of foundation sidewalls, soil inhomogeneity and inelasticity, are also discussed. The paper concludes with parametric studies on the seismic response of bridge bents on embedded footings in layered soil. Results are presented (in frequency and time domains) for accelerations and displacements of bridge and footing, while potential errors from some frequently employed simplifications are illustrated. © 2006 Elsevier Ltd. All rights reserved. en
heal.publisher ELSEVIER SCI LTD en
heal.journalName Soil Dynamics and Earthquake Engineering en
dc.identifier.doi 10.1016/j.soildyn.2005.12.005 en
dc.identifier.isi ISI:000240672500002 en
dc.identifier.volume 26 en
dc.identifier.issue 9 en
dc.identifier.spage 824 en
dc.identifier.epage 853 en


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