Stability analysis of retaining walls in seismic areas is generally performed calculating a safety factor against a possible mechanism of collapse. Nevertheless, considering that limit conditions usually occur in some time intervals during an earthquake, a more rational approach consists in assessing the performance of the structure in terms of accumulated permanent displacements. In this context, a novel method is proposed in the present study for predicting the earthquake-induced permanent displacements of embedded cantilever retaining walls, such as diaphragm or sheet-pile walls. This method requires solving a simple motion equation of the structure subjected to the soil-structure contact stresses evaluated using a closed-form solution. Specifically, it is assumed that the wall undergoes a rigid rotation around a point located in its embedded portion. Comparisons are presented with both experimental and numerical results documented in published studies. In all considered cases, a satisfactory agreement is

Earthquake-Induced Permanent Displacements of Embedded Cantilever Retaining Walls

Conte, Enrico;Pugliese, Luigi;Troncone, Antonello
2022

Abstract

Stability analysis of retaining walls in seismic areas is generally performed calculating a safety factor against a possible mechanism of collapse. Nevertheless, considering that limit conditions usually occur in some time intervals during an earthquake, a more rational approach consists in assessing the performance of the structure in terms of accumulated permanent displacements. In this context, a novel method is proposed in the present study for predicting the earthquake-induced permanent displacements of embedded cantilever retaining walls, such as diaphragm or sheet-pile walls. This method requires solving a simple motion equation of the structure subjected to the soil-structure contact stresses evaluated using a closed-form solution. Specifically, it is assumed that the wall undergoes a rigid rotation around a point located in its embedded portion. Comparisons are presented with both experimental and numerical results documented in published studies. In all considered cases, a satisfactory agreement is
design, diaphragm and in situ walls, earth pressure, earthquakes
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.11770/332459
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