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Reliability of Normal Cross Sections of Bending Reinforced Concrete Elements
https://orcid.org/http://orcid.org/0000-0003-0380-068X
https://orcid.org/http://orcid.org/0000-0002-9864-0713
The dependence of the reliability of the reinforced concrete bending section on the statistical characteristics of the strength of its constituent materials—concrete and reinforcement—is considered. It is shown that the reason for the high reliability of the calculated values of the strength of the reinforcement (at least 1 − 1.39·10−9 when the coefficient of variation of strength 4%), it is advisable to limit the reliability requirements of section levels of reliability strength of concrete. To quantify the reliability of the cross-section, the safety factor for concrete is used, showing the amount by which it is possible to increase the estimated time to the reliability section remained at the level of concrete strength. It is found that B30 class concrete and reinforcement steel grade A400 may increase the estimated bending moment by 10% in the range of rebar from 0.5 to 2.5%, when they are used in a reinforced concrete element, in addition, at the number of rebar from 1 to 2% the estimated bending moment may increase by 15%. The use of low-strength concrete in combination with high-strength reinforcement significantly reduces the permissible increase in the design bending moment.
Reliability of Normal Cross Sections of Bending Reinforced Concrete Elements
https://orcid.org/http://orcid.org/0000-0003-0380-068X
https://orcid.org/http://orcid.org/0000-0002-9864-0713
The dependence of the reliability of the reinforced concrete bending section on the statistical characteristics of the strength of its constituent materials—concrete and reinforcement—is considered. It is shown that the reason for the high reliability of the calculated values of the strength of the reinforcement (at least 1 − 1.39·10−9 when the coefficient of variation of strength 4%), it is advisable to limit the reliability requirements of section levels of reliability strength of concrete. To quantify the reliability of the cross-section, the safety factor for concrete is used, showing the amount by which it is possible to increase the estimated time to the reliability section remained at the level of concrete strength. It is found that B30 class concrete and reinforcement steel grade A400 may increase the estimated bending moment by 10% in the range of rebar from 0.5 to 2.5%, when they are used in a reinforced concrete element, in addition, at the number of rebar from 1 to 2% the estimated bending moment may increase by 15%. The use of low-strength concrete in combination with high-strength reinforcement significantly reduces the permissible increase in the design bending moment.
Reliability of Normal Cross Sections of Bending Reinforced Concrete Elements
https://orcid.org/http://orcid.org/0000-0003-0380-068X
https://orcid.org/http://orcid.org/0000-0002-9864-0713
The dependence of the reliability of the reinforced concrete bending section on the statistical characteristics of the strength of its constituent materials—concrete and reinforcement—is considered. It is shown that the reason for the high reliability of the calculated values of the strength of the reinforcement (at least 1 − 1.39·10−9 when the coefficient of variation of strength 4%), it is advisable to limit the reliability requirements of section levels of reliability strength of concrete. To quantify the reliability of the cross-section, the safety factor for concrete is used, showing the amount by which it is possible to increase the estimated time to the reliability section remained at the level of concrete strength. It is found that B30 class concrete and reinforcement steel grade A400 may increase the estimated bending moment by 10% in the range of rebar from 0.5 to 2.5%, when they are used in a reinforced concrete element, in addition, at the number of rebar from 1 to 2% the estimated bending moment may increase by 15%. The use of low-strength concrete in combination with high-strength reinforcement significantly reduces the permissible increase in the design bending moment.
Reliability of Normal Cross Sections of Bending Reinforced Concrete Elements
Lecture Notes in Civil Engineering
Klyuev, Sergey Vasil'yevich (Herausgeber:in) / Klyuev, Alexander Vasil'yevich (Herausgeber:in) / Yakubovich, A. N. (Autor:in) / Yakubovich, I. A. (Autor:in)
Environmental and Construction Engineering: Reality and the Future ; Kapitel: 27 ; 199-206
07.06.2021
8 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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