| The corrosion of reinforcement in concrete is one of main factor which harms the structure using life and safety, the durability problem that caused by rebar corrosion is becoming more and more prominent, Which have been attracted by worldwide academic organizations,scholars and engineers.and they applies theyselves to the research on the durability of the corrosion of reinforcement. I am also very interested on the topic of durability corrosion of reinforcement,and researching on Problems of Corroded reinforced concrete members by using the finite element.The main contents include:I commit myself to theoretical analysis of mechanism and laws of corroded reinforced mechanical properties degradation, and perform Simulation on pull test of corroded steel bar. Effects of corrosion pits on the stress distribution were studied. This paper also analyses the degradation rule of the mechanical properties on conditions of the different depth of rust pit.Based on the existing bond deterioration research, I Calculated and analyzed the mechanical property of corroded reinforced concrete bending members by using the finite element. Paralleling calculating result with the test proves the reliability of this model. Furthermore, it is studied that bending and comprehensive members of mechanical properties for different corrosion rate, and some useful results is obtained.The corrosion of rebar cracks concrete, leading to the decline of rebar and concrete coordination ability and the damage of geometric section, which causes bearing capacity of bending and comprehensive components decline. Based on the current calculation theory.through introduction of coordination coefficient and geometry section damage coefficient to establish a bending and comprehensive capacity model of corroded reinforced concrete component,which can provide scientific basis for assessing the durability of concrete structure.Figure [35] table [3] references [79]... |
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