Seismic Performance Of Masonry Walls Strengthened With BFRP Sheet

Masonry structure as a form of ancient structures,are widely used in building construction.Existing masonry structures are facing,natural disasters,the problem which can not meet the requirement of the current seismic guideline,once a strong earthquake,the damage will be very serious.Therefore,it is of great engineering significance to strengthening the masonry structure and improve its seismic performance.In recent years,the research and application of FRP materials has been a hot topic in civil engineering field.Fiber Reinforced Plastics(FRP)is widely used in civil engineering reinforcement because of its advantages of light weight,high strength,corrosion resistance.External bonded strengthening method is to put the FRP sheet or strip with epoxy resin colloid materials such as paste on the outer surface of building components,through FRP work together to improve the bearing capacity of the structures,so as to have the effect of reinforcement.This paper mainly studies the seismic behavior of masonry wall strengthened with Basalt FRP(BFRP)sheet.The simulation results are compared with the experimental results,and control agree well.In this paper,nine test walls are made,including 1 type of strengthening wall and 8 strengthening walls.Considering different degree of damage,paste and the anchorage method on seismic performance of masonry wall,the effect on shear bearing capacity of the masonry wall of such as hysteresis curves,skeleton curves,ductility of various parameters is analyzed,Based on the previous research of FRP external bond masonry wall,reference the domestic and foreign relevant guideline.The shear capacity calculation model of masonry wall strengthened with BFRP is presented.Using ABAQUS finite element analysis software to the simulate the BFRP strengthening masonry wall.The specimens using "X" type is better than "#" type.The reasonable anchoring measures have great influence on the masonry wall.Compared with the external bonding,the bolt has better anchoring effect,its ultimate bearing capacity and ductility increase.For the damaged wall,the damage reduce the seismic performance of the BFRP strengthing masonry wall.