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  • Analysis of emergency situations of building structures and technology for their elimination during tunnel construction

    Technical solutions aimed at preventing and eliminating the consequences of emergency situations in tunnel construction practice (in terms of laying utility lines or subways) are defined. Technical solutions are given taking into account their implementation in the conditions of structures under construction and in operation, characterized by a repeatable and predictable nature of occurrence.

    Keywords: building structures, metal structures, energy facilities, stress-strain state, technical expertise

  • Stress-strain state of foundations of power grid facilities located in the Far North

    The article presents a method for determining the stress-strain state of pile foundations for metal supports of power transmission lines during technical examination of power grid facilities in the Far North. An example of calculation using the LIRA automatic software package is given. The most stressed sections of structures are determined. The prospect of using CAD during technical examination of power grid facilities is proved.

    Keywords: building structures, metal structures, energy facilities, stress-strain state, technical expertise

  • Stress-strain state of a triangular membrane panel under the action of various types of lateral loads

    Анализируется методика определения напряженно-деформированного состояния металлических опор линий электропередач при технической экспертизе объектов электросетевого хозяйства. Даётся пример расчета с использованием автоматического программного комплекса ЛИРА. Определяется наиболее напряженные участки конструкций. Расчётным способом подтверждается гипотеза о том, что трехгранное поперечное сечение траверсы портальной промежуточной опоры ВЛ 500 кВ экономичнее (эффективней) чем четырехгранное (классическое) поперечное сечение.

    Keywords: building structures, metal structures, energy facilities, stress-strain state, technical expertise