Masonry Structure Seismic Appraisal And Reinforcement Transformation

In earthquake-prone areas in our country, the8.0-magnitude earthquake ofwenchuan in2008shocked the world, causing a lot of building collapse, in the earthqua-ke, the scho ol build ing damage is ver y seri ous, among them, especially destruction andcollapse of masonry structure, a lot of teachers and students lose life, social impact isdifficult to imagine.In April2009, China officially launched the primary and secondaryschool buildings in safety engineering, the seismic identification of schools across thecountry, to reinforce or does not meet the requirements of the school buildings.Research on the structure of primary and secondary school buildings census foundthat brick structure of our province more than90%, which consider the accounts foronly a few seismic fortification.For without seismic design of brick Hun structurereliability test must first carries on the appraisal, then a limit of seismic strengtheningrenovation.For seismic strengthening design schools.Summarizes the principle of the seismicstrengthening and reinforcement methods, can use enlarged cross section method, paste,paste CFRP steel plates, steel mesh mortar, anchor bar reinforcement methods, such asthe structure of bearing capacity does not meet the requirements for reinforcement.Established by JDJG of PKPM software engineering simulation calculation andanalysis, on the aseismatic appraisal, calculated by comprehensive seismic capacityindex, and calculation of the engineering anti-seismic ability.Compared before and afterthe resistance and load effect ratio of reinforcement, according to the appraisal result tochoose the most appropriate reinforcement method, and verify whether thereinforcement method of the selected eventually improve the seismic performance ofthe building.