Effect Analysis of Reinforced Concrete Beam with Opening Strengthened with Steel Sleeve

摘要

Based on finite element modeling of normal beam, beam with opening and beam with opening strengthened with steel sleeve, the author compares the changes of crack of the three kinds of beams in the loading process and its bearing capacity and deflection and combines with theories to analyze the mechanism of appearing of cracks, so as to find that commonly used reinforcement method of reinforcing concrete beam with steel casing has obvious deficiencies, in this sense, this paper provides ideas for improvement.