The history of development and efficiency of application of pipe-concrete structures during the erection of buildings and structures of various technical purposes is considered. The application of pipe-concrete columns for the purpose of restoring the operational reliability and load-carrying capacity of prefabricated reinforced concrete structures of the production building during its reconstruction is considered. Calculation of the bearing capacity taking into account additional loads and checking the strength of sections of the pipe-concrete column according to the deformation model have been made.
Keywords: concrete, pipe-concrete, load-bearing capacity, reinforced concrete, building structures, reinforcement, constant load, strength, operational reliability, deformation