Analytical Model of Interaction of an Oil Pipeline with a Support of an Overpass Built in a Mountainous Area

Today, pipelines are the safest and most economical way to transport petroleum products one of key components modern energy infrastructure. Nevertheless, pipeline systems associated with certain risks that can lead environmental disasters. The idea carrying out this study was initiated by results survey overpasses long-used oil laid in mountainous area Carpathian region. Defects such as a change shape pipe local bulges support nodes were detected. explanation described problem is separate from typical algorithms design calculations, which offered manufacturers current directive documents. desire provide an quantitative assessment detected defects became main motivation for writing article. An analytical model interaction rigid has been developed. Additional internal loads cross-section displacement its middle surface, arise result interaction, determined. method determining reaction intermediate overpass developed, considering properties soil base underground sections mounting gap node. dependence obtained determine additional hoop stresses due contact support. unambiguous relationship between maximum stress node established. on geometric characteristics pipes analyzed. research tested real structure Druzhba pipeline, built Carpathians. In general, simple engineering technique developed allows analyzing behavior provides numerical correction traditional strength formulas, equivalent pipeline.