Open Access proceedings Journal of Physics: Conference series

Conclusions

The results obtained when studying dynamic processes in pipeline systems using the developed software product allow us to recommend them for specific calculations and design of underground life support systems under seismic conditions. A number of numerical results were obtained depending on the incidence angle of seismic wave. So, we can conclude that the presence of compensators leads to a decrease in axial stresses near these compensators at a distance of 20-30 m around them.

The developed computational algorithms and software make it possible to study oscillations of a pipeline with different forms of clamping at the ends and in a wide range of soil parameters. The results of the solution of the study problem are presented in the form of plots, analysis of which shows that the most intense changes of the longitudinal and transverse displacements, normal and tangential stresses, and longitudinal and transverse forces occur near the clamped end of the underground pipeline. The same is true for the torsional and bending moments.

The established regularities provide the basis for concluding that the most dangerous zone under seismic loading of an underground pipeline is a clamped edge.

The results presented provide a comprehensive analysis of underground pipelines strength during seismic impacts and implement a systematic approach to determining the effect of an earthquake aftermath on the SSS of a pipeline and to planning engineering measures to ensure the safe and reliable operation of an underground pipeline in earthquake-prone areas.