Study On The Mechanical Properties And Seismic Behavior Of Reticulated Reinforced Adobe Masonry

Adobe masonry structure is widely used in residential buildings for its local materials,simple construction and green characteristics.Although the traditional adobe masonry building materials are gradually replaced by modern building materials such as concrete and steel,many domestic scholars still pay attention to the seismic safety of adobe buildings and constantly explore the research on seismic performance.In recent years,more and more scholars use test methods to analyze various mechanical properties of adobe.In this paper,ABAQUS finite element software and elastic-plastic finite element simulation method are used to analyze the network reinforced adobe masonry and adobe wall.Firstly,the constitutive model,failure criterion and other elastic and plastic parameters used in this paper are selected to verify the rationality of the model and the feasibility of relevant parameters by simulating the axial compression of plain adobe masonry.Furthermore,the numerical simulation analysis is carried out in the eccentric compression test of adobe masonry with mesh reinforcement carried out by our research group in the early stage.The output displacement curve,failure mode and other stress nephogram analysis and test results are obtained.Based on the test and numerical simulation results,the eccentric bearing capacity of adobe masonry before and after reinforcement is analyzed theoretically.Based on the existing bearing capacity formula of masonry structure,the formula for calculating eccentric compression of adobe masonry is obtained.The error between the calculated value of eccentric compressive strength and the results of test and numerical model calculation is within the acceptable range.Secondly,five wall models are designed,one of which is unreinforced,four of which are wall models with different reinforcement ratio and different configuration.The simulation results show that the seismic performance of adobe wall is improved obviously after reinforcement.Through the comparison of the ultimate load,ultimate displacement and other seismic performance indexes of each group of network reinforcement,it can be seen that the reinforcement effect of each layer is the best.Finally,considering the composite action of vertical compressive stress and the ratio of height to width of the wall,different models in 9 are designed for pushover calculation.Orthogonal analysis method is used to analyze the contribution of various factors to the seismic performance of reinforced adobe walls.The vertical compressive stress is one of the two factors that play a leading role in the seismic performance of the reticulated reinforced wall.Suggestions on the reasonable design floor load of the reticulated reinforced adobe building are put forward。...