In earthquake prone regions lifelines can be buried in the proximity of an active fault and backfill material selection as-sumes a key role for the pipeline integrity in hazardous scenarios. Backfill influence on the soilpipe interaction can be evaluated through small scale laboratory tests oriented to reproduce in situ conditions. In the paper some aspects are presented of the numerical modeling of small scale tests on laterally loaded pipes buried in sand. The numerical analyses were carried out accounting for the reduction of the shear strength and stiffness parameters with increasing irreversible strains. This permits following the development of the shear band, and the consequent effects on the pipeline, in the case of lateral loading as well as in the case of a fault propagating from the bedrock

Evaluation of the effects of faulting on buried lifelines

CIVIDINI, ANNAMARIA;
2008-01-01

Abstract

In earthquake prone regions lifelines can be buried in the proximity of an active fault and backfill material selection as-sumes a key role for the pipeline integrity in hazardous scenarios. Backfill influence on the soilpipe interaction can be evaluated through small scale laboratory tests oriented to reproduce in situ conditions. In the paper some aspects are presented of the numerical modeling of small scale tests on laterally loaded pipes buried in sand. The numerical analyses were carried out accounting for the reduction of the shear strength and stiffness parameters with increasing irreversible strains. This permits following the development of the shear band, and the consequent effects on the pipeline, in the case of lateral loading as well as in the case of a fault propagating from the bedrock
2008
Computer Methods and Advances in Geomechanics
9781622761760
pipeline; small scale tests; shear band; finite elements
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/546976
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