Numerical Research On Reinforced Concrete Columns Strengthened By Wet Bonded External Steel

Reinforced concrete structure because of its good tensile and compression capacity and economic benefit has been widely used in the practical engineering, but due to the impact of external natural disaster and human factors that often lead to many defects and injuries, the impact of change of using function, therefore, reinforced concrete structure need to be reinforced and repaired.First, analyze mechanical behavior of reinforced concrete columns strengthened by wet bonded external steel, on the basis of this, discuss bearing capacity calculation method of wet bonded external steel. Second, describe basic theory and analysis procedure of finite element method, emphatically discuss constitutive relation, strength criterion of concrete material, treatment of crack and crushed zone, solution method of nonlinear problem, and so on. And then based on the ANSYS software, the finite element model of reinforced concrete and the type of concrete and steel units, the constitutive relation of concrete and steel, as well as cracks in concrete was introduced to deal with, in view of wet concrete reinforcement steel column force characteristics, establish a rational analysis of finite element numerical model.Then, analyze the model of reinforced concrete columns strengthened by wet bonded external steel. By compared with ANSYS result and test result, indicating that the selected finite element model of wet bonded external steel columns can simulate effectively mechanical behavior of concrete columns, can be better reproduced by the internal force and deformation development under load Further to shows that we can analyze mechanical properties and damage mechanism of any type reinforced concrete columns strengthened by wet bonded external steel.Finally, on the basis of analysis of calculation results, get some useful conclusions about mechanical properties reinforced concrete columns strengthened by wet bonded external steel.Therefore, we can work to reduce the test scale, under the condition of less components test, to obtain a series of effective data, and realize research on reinforced concrete columns strengthened by wet bonded external steel. It has extremely important significance.