title: ÐÐ°Ð¿ÑÑÐ¶ÐµÐ½Ð½Ð¾Ðµ ÑÐ¾ÑÑÐ¾ÑÐ½Ð¸Ðµ Ð¶ÐµÐ»ÐµÐ·Ð¾Ð±ÐµÑÐ¾Ð½Ð½ÑÑ ÐºÐ¾Ð»Ð¾Ð½Ð½ Ð¸ Ð±Ð°Ð»Ð¾Ðº Ñ ÑÑÐµÑÐ¾Ð¼ Ð½ÐµÐ»Ð¸Ð½ÐµÐ¹Ð½Ð¾Ð¹ Ð¿Ð¾Ð»Ð·ÑÑÐµÑÑÐ¸
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Stress state of reinforced concrete columns and beams taking into account nonlinear creep
Creators: name: ÐÐ¾ÑÐ¾Ð±ÑÐµÐ²Ð°, ÐÐ½Ð°ÑÑÐ°ÑÐ¸Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2021
Subjects: ÐÐ¾Ð»Ð¾Ð½Ð½Ñ Ð¶ÐµÐ»ÐµÐ·Ð¾Ð±ÐµÑÐ¾Ð½Ð½ÑÐµ
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description: This work is devoted to the study of the influence of nonlinear creep on the VAT of reinforced concrete structures working with cracks in the stretched zone. The aim of the work is to develop and improve the methodology for calculating reinforced concrete elements by the step method, taking into account nonlinear creep and geometric nonlinearity under different loading modes. Tasks that were solved in the course of the study: 1. Development of a methodology for calculating the VAT of reinforced concrete structures by the step method with constant and changing bending moments; 2. Writing a program in the "Fortran" programming languageÂ»; 3. Comparison of the obtained results with the known solutions of other authors and the results of experiments. Object of research: reinforced concrete columns and beams. Subject of research: the effect of nonlinear creep on the VAT of reinforced concrete structures. In the course of the study, the existing creep theories were reviewed, their main shortcomings were identified, and the assumption of P. I. Vasiliev, based on the use of the Lebesgue integral for the calculation of reinforced concrete elements, was chosen. Based on the study of the theoretical foundations, a calculation program was written in the Fortran programming language. This program was used in the calculations of reinforced concrete columns and beams. Based on the results of the calculation, graphs of the dependence of the height of the compressed zone, deflections, stresses in the reinforcement and concrete on time were constructed. The reliability of the calculations was confirmed by comparison with the known experimental data of other researchers. The results obtained allowed us to conclude that the considered method of calculation has a number of advantages and, when divided into a significant number of time intervals, contributes to increasing the accuracy of calculations.