Finite Element Analysis And The Flexural Bearing Capacity Calculation Of Corroded Reinforced Concrete Beam

The bearing capacity of corroded reinforced concrete calculation is the key to assess thedurability of concrete structure. In many projects, reinforced concrete structure not only needto withstand repeated load effect, but also take the static load. And the key reason ofinfluencing the reinforced concrete durability is the reinforcement corrosion. Because of thevarious factors of the reinforcement corrosion, it causes to reduce steel reinforcement andconcrete bond strength, and degenerate the mechanical properties, what is worse, it canchange the concrete damage form, reducing the bearing capacity of the reinforced concretemembers, affecting the normal use and safety of the structure.Therefore, an accurate grasp ofcorroded reinforced concrete structure and components for the bearing capacity of thedurability evaluation and appraisal reinforcement has the very strong engineering applicationvalue.This paper firstly summarized the rusty steel analysis of the mechanical properties ofcorroded reinforced concrete and the bond-slip behavior, on the basis of the existing testresults, it brings up flexural bearing capacity calculation formula of reinforced concrete beamundering the concentrated loading, showing that the bearing capacity of normal sectionbending theory calculation results match the experimental results, this paper proves that thecalculating formula of reliable and effective, and can be used in the calculation analysis of thesimilar members.Then,by using the ANSYS finite element software,doing the static simulation analysisaccording to the model building and the rebar corrosion caused by the bond failure of concretebeams,In the modeling process, utilizing the life and death element method simulation rustysteel and concrete bonding between the failure. Killing corroded reinforced concrete aroundunit and using the formula come with up the third chapter of this paper, to calculate theflexural bearing capacity of numerical simulations and normal section of the specimen,compared with the simulated results and the theoretical results, it on further verified theapplicability and reliability formula theoretically.At the last,getting the result of corroded reinforced concrete deflection changerule,analyzing the effect of corroded reinforced concrete beam influence factors.