Calculation of reinforced concrete beam reliability on operation stage by crack length criterion

Vestnik MGSU

Utkin Vladimir Sergeevich¹  Solov’ev Sergey Aleksandrovich¹ 

[1] Vologda State University (VStU);

关键词: reliability;    reinforced concrete beam;    probability of no failure;    crack length;    the theory of possibilities;    the theory of evidence;   

DOI  :  

来源: DOAJ

【 摘 要 】

The mechanical (structural) reliability of a building, safety of people and continuity of the technological processes in buildings and structures depend on the reliability of the bearing structures on operation stage, including reinforced concrete beams. One of the measures to provide safety and reliability is the probability of no-failure operation of structural elements or systems of elements. For reliability calculation the Russian State Standard recommends to apply probability and statistical methods when possessing enough data on variability of the controlled parameters in the mathematical model of the limit state, in particular, when the amount of data allows conducting its statistical analysis. In the current time there appear the works pointing, that the future advancing of calculation methods for building structures requires the wide use of reliability theory. The article describes the methods for calculating the reliability of a reinforced concrete beam according to the criterion of crack length with the limited statistical information about controlled parameters. The authors illustrate the application of the theory of evidence to determine the statistical mathematical expectation of reliability in the presence of a subset of reliability intervals. Each design case is followed by numerical examples. The article underlines the importance of applying fracture mechanics for the further development of the methods of calculation of reinforced concrete structures.

【 授权许可】

Unknown