Abstract
Ensuring the safety of hydraulic structures should be carried out, including calculations of the stress-strain state of the system “structure–base” by the method of limit States. A summary system of reliability coefficients, a combination of loads and operating conditions for different design cases is presented. Considered the stability condition of the concrete dam on the shift on the substrate. A comparison of the values of the generalized dam stability coefficients (reserve) according to Russian norms and American standards is performed. It is shown that when comparing the numerical values of the strength and stability coefficients regulated in the Russian norms and American standards, it is necessary to take into account the methods of determining the strength characteristics of materials, the practice of taking into account loads and effects, as well as the methods of computational studies of the stress-strain state of structures and their bases.
Highlights
A variety of hydraulic structures for functional purposes and industry affiliation creates some difficulties in solving the problems of their own safety
In the calculations of hydraulic constructions, structures and grounds to comply with a condition to ensure that occurrence of the limit state, i.e. the assessment of onset of first limiting condition produced by the condition: γn γlc F ≤ γc R
Normative values of loads Fnorm should be determined by the normative documents for the design of certain types of hydraulic structures, their structures and bases
Summary
A variety of hydraulic structures for functional purposes and industry affiliation creates some difficulties in solving the problems of their own safety. Given the importance of hydraulic structures for various sectors of the economy, which are part of power plants, water transport systems, water supply systems and irrigation, special attention should be paid to own the security of such facilities, most of which were built 50-60 years ago. Ensuring the safety of hydraulic structures should be carried out, including calculations of hydraulic, filtration and temperature regimes, as well as the stress-strain state of the system "structure – base", based on the results of calculations by the method of limit States
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