Performance Analysis And Reinforcement Scheme Study Of Openings In Bearing Wall Of Masonry Structure

Masonry structure,as an important product of construction in the early stage of reform and development,is widely used in residential,industrial production and other fields.In the early stage of construction,due to the imperfection of masonry structure specifications and seismic codes,a large number of masonry structures have defects in the design of opening and strengthening.With the continuous improvement of the code,it is found that a large number of masonry structures such as schools,hospitals,residential areas and other important buildings in use are not satisfied with the earthquake resistance,poor bearing capacity and other issues,and in 2008 Wenchuan earthquake,2010 Yushu earthquake brought huge disasters to the people.Therefore,the domestic engineering construction authorities attach great importance to it,and have invested a lot of material and financial resources in the theoretical research and practice of opening and strengthening of existing masonry structures.This paper is based on the general situation of masonry structure development,research progress and application of finite element analysis,and combined with the classical theoretical research on the constitutive relationship of masonry structure,summarizes the basic theory of opening simulation and seismic checking calculation of masonry structure using finite element analysis software.Subsequently,this paper focuses on the construction and non-linear analysis of 10 ANSYS finite element masonry wall models.Through the study of hysteretic curves,skeleton curves,stiffness degradation curves and energy dissipation curves of each component,it summarizes the law of the influence of opening rate and reinforcement measures on the seismic performance of the wall,and summarizes the measures of masonry wall reinforcement in design and construction.Finally,through the actual project case of Xinji Primary School Teaching Building,this paper uses PKPM to calculate the whole structure,and uses ANSYS to carry out the non-linear analysis,and realizes the checking calculation before and after the reinforcement of the project.Opening and reinforcement of masonry structure is an important part of current engineering construction.This paper focuses on the influence of opening and structural reinforcement measures on bearing capacity and seismic performance of masonry wall.With the help of finite element analysis software and domestic structural calculation software,specific suggestions are put forward for structural reinforcement and design of opening of masonry wall,hoping to reduce them.Less disasters caused by openings in masonry structures can help.