000019998 001__ 19998
000019998 005__ 20170118182350.0
000019998 04107 $$aeng
000019998 046__ $$k2017-01-09
000019998 100__ $$aTemis, Mikhail
000019998 24500 $$aInfulence of Backfill Compaction in Time on Buried Trunk Pipeline Behaviour Under Active Fault Displacement

000019998 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019998 260__ $$b
000019998 506__ $$arestricted
000019998 520__ $$2eng$$aThe usual design solution for buried trunk pipeline while crossing active fault zone is to make a trapezoid-like trench with flat slopes and using a backfill with special properties. The aim of this trapezoid-like trench is to reduce strains in pipeline under the action of active fault displacement by enhancing the pipeline capability for relatively free lateral and upward movement. Due to soft backfill these movements not limited to trench borders and gives pipeline a capability of free aboveground deformation. In most cases sand with special properties is used as backfill for the trapezoid-like trench in active fault zones. However, over the years backfill sand is compacting and its mechanical properties become closer to undisturbed soil. In current paper the investigation of pipe-soil interaction under active fault displacement for a number of pipeline lifetime periods were carried out. The influence of backfill properties changing on pipeline stress-strain state under the fault displacement action is shown. For simulation the special finite-element model of pipe-soil interaction is used. Pipeline was simulated by plastic finite elements. Pipe-soil interaction in trench was simulated by nonlinear spring finite elements.

000019998 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019998 653__ $$aactive fault, buried pipeline soil interaction, pipeline stress-strain state

000019998 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019998 720__ $$aTemis, Mikhail
000019998 8560_ $$ffischerc@itam.cas.cz
000019998 8564_ $$s630210$$uhttps://invenio.itam.cas.cz/record/19998/files/4909.pdf$$yOriginal version of the author's contribution as presented on USB, paper 4909.
000019998 962__ $$r16048
000019998 980__ $$aPAPER