Influence of Wall Flexibility on Seismic Earth Pressures in Vertically Homogeneous Soil

Scott J. Brandenberg, Jonathan P. Stewart, George E. Mylonakis

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

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Abstract

Solutions are formulated for seismic earth pressures acting on vertical flexible walls with the top h and bottom constrained by discrete elastic stiffness elements (top constraint representing a structural constraint, bottom constraint representing foundation stiffness). Solutions are formulated using the Winkler assumption and correspond to shear waves propagating vertically through homogeneous soil. Earth pressures decrease as wall flexibility increases. Rotational and translation constraints at the top and bottom of the wall also contribute to mobilization of seismic earth pressures. Current standard-of-practice procedures are based on limit analysis methods that do not consider the influence of frequency, wall flexibility, structural constraints, or soil-structure interaction (SSI) in general. The proposed approach is more robust because wave propagation effects are considered and seismic earth pressures result from the product of relative wall-soil displacements and stiffness at the wall-soil interface.

Original languageEnglish
Title of host publicationGeo-Risk 2017
Subtitle of host publicationGeotechnical Risk Assessment and Management
PublisherAmerican Society of Civil Engineers (ASCE)
Pages412-423
Number of pages12
ISBN (Print)9780784480724
DOIs
Publication statusPublished - 1 Jun 2017

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