Rinforcement Experiment And Finite Element Analysis Of Anti-Seismic Performance Based On Brick Masonry Of Historical Buildings

The brick, mortar, wood, etc. of existing historic character buildings in Tianjin have along history, and their strength and elastic-plastic performance have been significantlyreduced.The reduction of material function severely affected the safety and use of historiccharacter buildings. And in addition, these historical architectures in Tianjin had undergoneTangshan Earthquake in 1976, although reinforcement had been carried out after theearthquake, various degrees of defects in terms of appearance or structural securityremained in these buildings because of the technical and the economic conditions then.In this paper, the seismic performance of brick masonry specimen with originalmaterials and reinforced brick masonry specimen was studied, in view of low-strengthmortar in the extant historical character buildings in Tianjin. 2 test pieces of brick masonrywall with original material and 4 reinforced pieces with steel-meshed cement mortar layerswere manufactured to carry on low fequency cyclic loading test．The representative volumeelement(RVE) method was applied to brick masonry,and secondary-RVE method wasproposed to simulate the reinforced brick masonry, obtaining its equivalent parameters.The low frequency cyclic loading test of reinforced brick masonry was simulated with thefinite element method, and comparative analysis has been carried on with the experiment.At last, the finite element analysis was used to analyze the seismic performance of one ofthe historical character buildings before and after being reinforced, demonstrating thefeasibility of secondary-RVE method in reinforced brick masonry.