The technical condition assessment of the water intake hydraulic structures complex using numerical modeling methods

In order to analyze the operation of the complex of hydraulic structures (HS) of the water intake from the point of view of safety and reliability, the technical condition is assessed using numerical modeling methods. The assessment of the technical condition of the HS, its composition, and the methods used are regulated by the requirements of FZ-117 “On the Safety of Hydraulic Structures” and regulatory documents in the field of HS safety. The task is to provide an integrated approach to the inspection of the HS, including the collection of initial information, including engineering surveys, consistent visual and instrumental inspections and observations, and verification calculations using modern engineering software systems. In order to solve one of the tasks set, the experience of using the GTS NX program, a Midas product, which uses the finite element method, was obtained and analyzed. The GTS NX program implements modeling of interactions between structures and their foundations based on the finite element method. To control and determine the convergence of the obtained calculation results, calculations are additionally performed in accordance with the recommendations of the regulatory literature. The difference between the calculation results does not exceed 9%. Finally, the results of the comprehensive examination are compared with the safety criteria previously developed and approved by the Rostechnadzor of Russia, and compliance with regulatory documents in the field of HS safety is assessed. The use of an integrated approach to the survey in combination with numerical modeling methods allows not only to assess the current state of the HS, but also to develop effective measures to ensure their durability and safety. This is especially important for structures that play a key role in the water supply system, which have a service life of more than 50 years, as their reliability directly affects the smooth operation of the entire infrastructure.