| Traditional village architecture is an important carrier of traditional Chinese culture,The traditional villages are mostly masonry structures and self-built houses,which has not been strictly designed and constructed,and has been disrepair for a long time.The structure has a great hidden danger of safety,and its seismic performance is poor.However,the preservation of traditional masonry structure is more emphasis on architectural history and features.At the present stage,the reinforcement scheme has great effect on the appearance of masonry structure.the vibration table test needs a lot of money and is limited by test equipment,so it is very difficult to do the vibration table test in an all-round way.With the improvement of the numerical simulation technology,the response of structures under earthquake and the effect of reinforcement schemes can be well simulated by selecting reasonable calculation models and parameters.Based on the above reasons,this paper adopts the horizontal reinforcement technology to reinforce the traditional masonry structure in Taihang Mountain Area ABAQUS finite element software was used to establish a reasonable finite element model of masonry based on the typical masonry house in Taihang mountain,The location,development process and failure degree of cracks in masonry structure under earthquake are analyzed,which provides the basis for later reinforcement.The main work of this paper is as follows:(1)The constitutive relation of masonry,the constitutive relation of steel bar,the damage plastic model of concrete and the setting of parameters are expounded.The comparison between numerical simulation results and test results shows that the software selection and parameter setting are reasonable(2)In view of the embedded steel reinforcement effect on the bearing capacity and displacement ductility of masonry wall,nine masonry wall models are established and analyzed numerically,and the effects of different reinforcement spacing,diameter of reinforcing bar and ratio of volume reinforcement on the strengthening effect of masonry wall are also considered.(3)The ABAQUS finite element model was established by taking the typical residential house in Taihang mountain as an example.From three aspects of structural cycle,tensile damage parameter(DAMAGET)and inter-story displacement angle,the failure of traditional masonry structure under different earthquake intensity and the influence of reinforcement spacing on the strengthening effect of masonry structure are analyzed.The results show that with the increase of the volume reinforcement ratio,the ultimate bearing capacity is also improved.and the displacement ductility coefficient is the maximum when the volume reinforcement ratio is 0.232%,and the ductility of the wall is the best.By comparing the inter-story displacement angle of reinforced masonry structure with each performance leveling line,the horizontal reinforced masonry structure can be strengthened against earthquake by using horizontal reinforcement,which can meet the requirement of structural safety. |
