Krylov Sergey B.
Dr. Sci. (Engineering), Head of the Laboratory of Reinforced Concrete Mechanics №8 of NIIZhB named after A.A. Gvozdev of JSC RCC. Moscow, Russian Federation
Publications
Assessment of earthquake resistance of reinforced concrete buildings at the design stage
Issue: #5-2022
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During individual construction in seismic areas, the designer often has to solve problems that violate certain requirements of regulatory documentation on the configuration and number of storeys of the building, architectural and planning solutions of its internal and underground space. In this case, it is necessary to develop special technical conditions (STC) with compensating measures for these deviations, ensuring high seismic resistance of construction objects. The article considers the possibility of using the technology of plastic deformation of the bearing structural elements of the building to ensure the seismic resistance of the object, and also offers a method for assessing the degree of plastic work of the structure.
Critical Force for Design the Pipe-Concrete Structural Strength
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The current state of nonlinear calculations of reinforced concrete structures
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At present, the calculation of buildings and structures, as well as difficult working units of structures is performed using computer programs. The results of numerical studies published in scientific publications and in the reports of scientific conferences show that, unlike metals, it is still extremely difficult to obtain calculated results for the stress-strain state of reinforced concrete structures strictly corresponding to the experimental data.
Calculation of the central and eccentrically compressed pipe-concrete structures strength
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Numerical and experimental studies of the strength of compressed steel-reinforced concrete elements made using high-strength concrete and square steel pipes of class C345
Issue: #6-2023
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In this article, numerical and experimental studies of the strength of compressed steel-reinforced concrete elements made using high-strength concrete and square steel pipes of class C345 are considered in order to determine the bearing capacity. The main issue in the calculation of pipe-concrete structures is the question of the design strengths of materials working as part of a pipe-concrete section. These strengths differ from the strengths of materials in a uniaxial stressed state and depend on a number of parameters. Concrete with small eccentricities of longitudinal force is in a state of triaxial compression, and its strength increases compared to uniaxial compression. The steel of the pipe is in a flat stressed state. When the eccentricity of the longitudinal force application increases, the strengths of materials approach to the strength under uniaxial compression. The issue of changing the strength of materials with a change in the eccentricity of the longitudinal force has been studied quite well. Therefore, the main issue is the strength of materials in the central compression of the pipe-concrete structure. The work of materials in the composition of a square tube-concrete section is fundamentally different from the work of materials in the composition of a round tube-concrete section. The main difference lies in the uneven lateral compression of concrete in a square pipe.