Abstract
Seismic permanent displacement of the soil walls plays an important role in design of these structures. Due to the increase in growth of urban areas and the limitations in use of flat grounds, many structures are built near slopes and retaining walls. During earthquakes, these structures can apply an additional surcharge on the wall. The intensity and location of the surcharge is of considerable importance on the seismic displacements of the soil wall. In this study, by using the limit analysis and upper bound theorem, seismic permanent displacement of the soil wall under surcharge has been analyzed. Thus, a formulation is presented for calculating the yield acceleration and seismic displacement for different surcharge conditions. The effect of seismic acceleration, surcharge intensity, its location and soil properties is investigated. A parameter called the “displacement coefficient” is proposed, and is a potential modification for Newmark’s sliding-block method.
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Aminpour, M.M., Maleki, M. & Ghanbari, A. Predicting seismic permanent displacement of soil walls under surcharge based on limit analysis approach. Earthq. Eng. Eng. Vib. 17, 747–759 (2018). https://doi.org/10.1007/s11803-018-0473-6
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DOI: https://doi.org/10.1007/s11803-018-0473-6