000013296 001__ 13296
000013296 005__ 20161114160335.0
000013296 04107 $$aeng
000013296 046__ $$k2009-06-22
000013296 100__ $$aVazouras, P.
000013296 24500 $$aFinite element analysis of buried pipelines under seismic-fault displacement

000013296 24630 $$n2.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013296 260__ $$bNational Technical University of Athens, 2009
000013296 506__ $$arestricted
000013296 520__ $$2eng$$aThe present paper investigates the mechanical behaviour of buried steel pipelines, crossing an active tectonic fault. The fault is considered normal to the pipeline direction and moves in the horizontal direction, causing stress and deformation in the pipeline. The soilpipeline system is modelled rigorously through finite elements, which account for large strains and displacements, nonlinear material behaviour and special conditions of contact and friction on the soil-pipe interface. Considering steel pipelines of various diameter-tothickness ratios, and typical steel material for pipeline applications, the paper focuses on the effects of various soil and pipeline parameters on the structural response of the pipe, with particular emphasis on pipe wall failure due to wrinkling (local buckling) or rupture. The effects of shear soil strength, soil stiffness, horizontal fault displacement, width of the fault slip zone, are investigated. The results are aimed at determining the fault displacement that would cause pipeline failure. The numerical results from the present investigation are also presented in diagram form, which depicts the critical fault displacement and the corresponding critical strain versus the pipe diameter-to-thickness ratio, and can be used for pipeline design purposes.

000013296 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013296 653__ $$aPipeline, buckling, seismic fault, finite elements, soil-structure interaction. Abstract. The present paper investigates the mechanical behaviour of buried steel pipelines, crossing an active tectonic fault. The fault is considered normal to the pipeline direction and moves in the horizontal direction, causing stress and deformation in the pipeline. The soilpipeline system is modelled rigorously through finite elements, which account for large strains and displacements, nonlinear material behaviour and special conditions of contact and friction on the soil-pipe interface. Considering steel pipelines of various diameter-tothickness ratios, and typical steel material for pipeline applications, the paper focuses on the effects of various soil and pipeline parameters on the structural response of the pipe, with particular emphasis on pipe wall failure due to wrinkling (local buckling) or rupture. The effects of shear soil strength, soil stiffness, horizontal fault displacement, width of the fault slip zone, are investigated. The results are aimed at determining the fault displacement that would cause pipeline failure. The numerical results from the present investigation are also presented in diagram form, which depicts the critical fault displacement and the corresponding critical strain versus the pipe diameter-to-thickness ratio, and can be used for pipeline design purposes.

000013296 7112_ $$aCOMPDYN 2009 - 2nd International Thematic Conference$$cIsland of Rhodes (GR)$$d2009-06-22 / 2009-06-24$$gCOMPDYN2009
000013296 720__ $$aVazouras, P.$$iDakoulas, P.$$iKaramanos S., A.
000013296 8560_ $$ffischerc@itam.cas.cz
000013296 8564_ $$s515919$$uhttps://invenio.itam.cas.cz/record/13296/files/CD441.pdf$$yOriginal version of the author's contribution as presented on CD, section: Seismic analysis of special structures.
000013296 962__ $$r13074
000013296 980__ $$aPAPER