Vol. 336 No. 4 (2025)

DOI https://doi.org/10.18799/24131830/2025/4/4937

Substantiation of design of the aboveground main pipeline support reducing frost heaving effect on piles

Relevance. The need to understand the mechanisms of interaction between pipeline transport of oil and gas in conditions of frost heaving in the regions of the Far North in order to solve a number of scientific and engineering problems both now and in the future. The reason leading to emergency situations and the destruction of main pipelines is soil frosty heaving. During the operation of aboveground main pipelines laid in frozen soils, frost heaving causes movement of the supporting part, which leads to dangerous loads on the pipeline and, as a result, to the appearance of defects. The main method of eliminating such defects is the use of various supports that protect the pipeline from geological processes. In this regard, it is necessary to develop a new type of support part for the main pipelines that can reduce the negative impact of frost heaving, as well as develop an algorithm for calculating this design. Aim. To determine the effectiveness of using a support wedge to protect against the effects of frost heaving and to develop an algorithm for calculating this design. Methods. Statistical methods that calculate the parameters of individual support elements that determine the dangerous loads of linear sections of an aboveground main pipeline; assessment of vertical pile pulling forces under the impact of frost heaving forces; assessment of the load on the pipeline under the effect of frost heaving forces. Results and conclusions. The authors have proposed the wedge in the support structure of an aboveground main pipeline, potentially reducing the effects of frost heaving forces, the calculation sequence that ensures the selection of proposed support structures, calculated the loads on a linear section of an aboveground main pipeline under the condition of frost heaving with a support wedge and without a wedge.

Keywords:

above-ground main pipeline, frost heaving forces, pipeline loads, vertical pile pulling force, support wedge

Authors:

Artur M. Batyrov

Maxim I. Korolev

Anton A. Krasnikov