Nezamay B. The trunk pipeline’s stress and strained state control method and device taking to account the section shape

The dissertation is devoled to the solution of the stress and strained state estimations problem for the trunk pipeline’s linear portion above-ground segments. As results of these external influences action the defect’s appearence and accumulation takes place in pipeline, in particullary – the defects of section shape, which make the influence on the general stress and strained state of the construction. The mathematical model of the deformation process in pipeline is designed taking to account the possible deformation of the one’s sections. If allows to describe the processes, which take place in the trunk pipeline linear portion during the long term exploitation, with the increasing level of accuracy. The sensor and microprocessor device for the pipeline section shape configuration control are designed, the method of above-ground pipeline’s segments space configuration reconstruction is given based on the information about the one’s section shape using the local variations method.