Underground main pipeline behaviour under a travelling impulse in the form of a triangle

The article presents an analysis of the dynamic response underground main pipeline under action a longitudinal wave, propagating in soil along pipe. It is assumed that elastic pipe has finite length. A linear viscoelastic model "pipe-soil" system interaction considered. influence pulse form triangle on deformed state investigated. comparative results obtained for some values coefficients and viscous interaction, propagation velocity, duration pulse. In case system, reflection wave boundaries when it coincides with leads to increase maximum deformation pipeline, value can double. viscosity coefficient at pipe-soil contact front attenuation pipeline. For soils higher than 100 kN∙s/m 2 , this complete bursts was also studied.