Research On The Seismic Performance Of The Masonry Structure Wall Strengthened By The Inclined Reinforced Mesh Cement Mortar Surface

Masonry structure has been widely used in China’s construction industry since ancient times,so it also appears in every social field of people’s life.Masonry structures,such as walls and columns,formed by mixing mortar and block masonry,are used as load-bearing components of buildings,which have the advantages of easy materials,fire resistance,good heat insulation and heat preservation,cost advantage and low difficulty in construction.Current from the current situation of architecture development,our country has already entered period of transformation and new construction and parallel,at the same time many buildings affected by time,has presented a certain security hidden danger,and cracks,material and material properties such as tensile is abate,in view of this,and the current industry standard request does not adapt,combining with the natural disasters in recent years,Masonry structure is easy to cause damage,so there are many safety risks,so it is of great practical significance to study the structural reinforcement methods and construction techniques of existing buildings.The main contents of this paper are as follows:(1)This paper summarizes the experimental research on the seismic performance of masonry walls by experts and scholars at home and abroad,and elaborates all kinds of common reinforcement methods at present,and introduces in detail the construction method and advantages of reinforcement method of steel mesh cement mortar surface layer.(2)The finite element method is used to establish the numerical simulation of the wall with unreinforced brick masonry structure,and the mechanical performance of the structure under displacement and load is analyzed through the loading test,and the damaged structure of the wall before and after loading is analyzed.(3)The inclined and orthogonal reinforced mesh cement mortar surface layer reinforced wall model was established for numerical simulation.The reinforcing bar spacing,the stress and strain law of the inclined Angle and the destructive state analysis of the reinforced mesh cement mortar surface layer were calculated to determine the influence of different factors on the mechanical performance of the structure.(4)Summing up the rules and analyzing the working mechanism of the reinforcement method of inclined steel mesh cement mortar surface layer,reflecting on the shortcomings of the work done in this paper,and putting forward the prospect of future research in this field.In this paper,on the basis of the research scholars at home and abroad,using ABAQUS finite element simulation software delve into the diagonal,the seismic performance of steel mesh cement mortar strengthening brick wall,with traditional orthogonal reinforcement method were compared with unreinforced wall,from the hysteresis curve,skeleton curve,stiffness and energy dissipation,such as Angle analysis,It is found that the seismic performance of the wall reinforced by the inclined steel mesh cement mortar surface layer is improved obviously.Under the same conditions,the reinforcement effect of this method will increase with the decrease of the reinforcement mesh spacing,and the reinforcement effect of the oblique Angle of the reinforcement mesh will increase first and then decrease,and the reinforcement effect is the best when the oblique Angle is 90°.