Determination of reliability factor on steel fiber concrete
K. V. Talantova
St. Petersburg State University of Railways of Emperor Alexander 1
Annotation: It is known that in order to ensure the operational reliability of building structures, the coefficients of reliability for loads and materials are taken into account in the calculations. Reliability factors for loads are determined by operating conditions. Coefficients of reliability by materials - by the type of material selected. Proceeding from the fact that the material is not reinforced concrete, and the connection of steel reinforcement and concrete is realized in reinforced concrete structures, where concrete and reinforcement work, as a rule, preserving their characteristics, the reliability coefficients for materials in the design of reinforced concrete structures are taken as for concrete and reinforcement . At the same time, when the concrete is saturated, as a rule, with fine-rained, steel fiberfibers, the construction composite material - steelfiber- concrete is obtained. At the same time, in Russian regulations on steel-fiber-concrete structures and the first and aktualized editions, the reliability coefficients for concrete and steel fibers are similar to those for reinforced concrete structures. However, the composite - steel-fiber-concrete has physical and mechanical properties, which are fundamentally different from the properties of both concrete and fiber. The lack of reliability coefficients for the material and in the norms and in the works of scientists served as the basis for carrying out a complex of experimental and theoretical studies, as a result of which the reliability coefficients for steel-fiber-reinforced concrete were obtained.
Keywords: steel fiber reinforced concrete, steel fiber reinforced concrete structures, reliability coefficients, calculated resistances, experimental and theoretical studies, types of steel fibers, stress-strain state.
Pages: 17-21.
Link for citation: Talantova, K. V. Determination of reliability factor on steel fiber concrete. – Text : direct. – In: The Donbas Constructon. – 2018. – Issue 2-2018. – Р. 17-21.
Issue 2-2018Journal: The Donbas Constructon
Publish house: Donbas National Academy of Civil Engineering and Architecture