Study On Seismic Behavior Of Masonry Walls Strengthened With Carbon Fiber Sheets

Masonry structure is a structure often applied to structural engineering,in particular,occupy a large application market in China's construction industry.Recent decades,the rapid development of the domestic civil engineering industry,a large number of building materials for masonry structures are found in human and applied in practical engineering.However,in the design,not a lot of masonry construction incorporated into seismic considerations.Further,since the masonry structure belonging to a brittle material,so the material is not too brittle tensile,shear and not bending without features.Earthquakes tend to be unpredictable,but also because it produces a short time,load a big role,and let humans do not have enough time to deal with him.Thus,when an earthquake occurs,houses usually masonry structures subjected to a large degree of damage,In this case,in order to prevent the destruction of homes,we need to be reinforced masonry structure housing,so can the masonry structure housing not destroyed earthquake.At present,the reinforcement of masonry construction method can be used to be more,the fiber reinforced sheet is one of them,and aramid fibers,glass fibers and carbon fibers are the three most commonly used fibers.Although the aramid fiber and glass fiber has obvious advantages,but there are also carbon fiber aramid fibers and glass fibers do not have the advantage that their mechanical properties and long-term performance is significantly better than the other two fibers.Therefore,the carbon fiber sheet has a very high utility value in Civil Engineering Construction.Carbon fiber material is only beginning to be more widely used in reinforced masonry structure in recent years,it is also one of the new structural reinforcement technology.Compared to other reinforcement materials,carbon fiber sheet is a kind of nature are more excellent fiber material,it expanded to two opposite directions in the heat,and thus for its performance given help,so the carbon fiber material is structural engineers widely used in building structures.Firstly,to understand the world today suffer from earthquake damage,followed by carbon fiber sheet seismic behavior of reinforced masonry wall were studied.This article:(1)First summarize the characteristics and features after the earthquake damage masonry structures,summarized some types of masonry structures require reinforcement.(2)Reinforced with carbon fiber sheet mode,and easily damaged parts of the wall,ultimate bearing capacity,ultimate displacement ductility,structural rigidity,seismic characteristics of a comprehensive analysis.(3)By using six different carbon fiber sheet strengthening scheme reinforced wall finite element calculation of the carbon fiber sheet reinforced masonry walls in seismic performance to do the relevant research,analysis of carbon fiber sheet reinforced masonry wall bearing capacity,deformation and seismic performance ductility,and the results were compared with the test.(4)The test results with ANSYS finite element method analysis comparing the results of the carbon fiber reinforced sheet stress analysis and stress analysis,and proposed to simplify the calculation of the theoretical Masonry Shear Capacity of Reinforced formula.