The article presentes the methodology for automating the design process of pile foundations of overhead power transmission towers using the digital model of overhead power lines (DMOL) software. The design technology proposed by Rosneft Oil Company has a number of advantages: automated data collecting of loads and geotechnical conditions, calculation of pile foundations using the certified software package Svaya-SAPR Pro, high speed of calculations and tracking individual loads and geological conditions for each support, selection of optimal solutions for pile foundations, the formation of text and graphic parts of the working documentation of architectural and construction solutions (AC brand) using typified drawings of foundations, formation of a bill of quantities for the preparation of estimate documentation. The use of DMOL provides a reduction in the labor intensity and timing of foundation design by 30 % of the typical approach and reduces the cost of building foundations of facilities by 10–15 %.The optimal decision is made based on the results of calculations during enumeration of different construction options for foundations: the number of piles in the grillage, the length and cross-section of piles, the presence of thermal stabilizers of soil. The following types of pile foundations are involved in the enumeration: steel from round pipes, square reinforced concrete or screw. At the same time, the cost of the installing of possible variants of foundations is calculated and their technical and economic comparison is performed.
The DMOL technology was developed in NK Rosneft-NTC LLC, a subsidiary of Rosneft Oil Company. As part of its implementation, the software products DMOL -6 Pro and DMOL-35 Pro have been developed. DMVL-6 Pro allows designing single-column foundations with a voltage of 6-10 kV and has the corresponding typed drawings of foundations. DMOL -35 Pro allows designing foundations for lattice overhead line supports with a voltage of more than 35 kV. These software products unify the schemes for fastening overhead line supports in the ground based on standard drawings stored in libraries. The programs interact with the Svaya-SAPR Pro software package, which performs calculations of foundations and pile foundations in full compliance with the requirements and methods given in the relevant construction norms and specifications.
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