Mechanical Behavior Analysis Of Assembled Frame Shear Wall Structure Based On ABAQUS

The drawbacks of adopting traditional building mode mainly based on site pouring are becoming more and more obvious,with the rapid development of China’s construction industry.Compared with traditional building mode,assembly building can not only achieve the goal of energy saving,emission reduction and resource saving,but also greatly shorten the construction period of the project and reduce the labor cost of construction enterprises.In order to promote the development of prefabricated building industry,the state has put forward policy requirements for the development of prefabricated building many times,and governments at all levels have also issued specific implementation plans.However,due to the late start of the development of China’s assembly building industry,the imperfect process standards and technical system,and the assembly frame-shear wall structure is a widely used structure in the assembly structure,the necessity of its seismic performance research is obvious.In this paper,ABAQUS finite element software is used to study the seismic performance of frame-shear wall structure.The specific contents are as follows:(1)Using ABAQUS finite element software,three kinds of frame-shear wall structures with one story,two stories and three spans are established:assembled frame-shear wall,assembled composite beam frame-shear wall structure and cast-in-place frame-shear wall structure.The structural deformation diagrams,stress nephograms and hysteretic curves of the three models are obtained by software finite element simulation,and then the skeleton curves,ductility coefficients,ductility coefficients and hysteretic curves of the structures are obtained.The seismic performances such as stiffness degradation and energy dissipation capacity are compared and analyzed.It is found that the trend of skeleton curve of three structures is basically the same,the peak value of skeleton curve of cast-in-situ structure is slightly higher than that of two assembly structures;the ductility of cast-in-situ structure is slightly lower than that of two assembly structures;in terms of stiffness degradation,the stiffness of cast-in-situ structure is slightly higher than that of assembly structure in the early stage of structural loading,but with the increase of displacement,the ultimate basic weight of In addition,the stiffness of cast-in-situ structure degrades to the same level as that of assembled structure,and the structure of cast-in-situ structure has the strongest energy dissipation capacity,but the difference between the three is not significant.(2)Modify the axial compression ratio of the assembled frame-shear wall structure,and then analyze the seismic performance of the frame-shear wall structure.It is found that the peak load of frame"frame-shear wall structure can be enhanced to some extent by properly increasing the axial compression ratio,but when the axial compression ratio increases to the peak load,the strength attenuation speed of the structure is faster;the greater the axial compression ratio,the faster the stiffness degradation rate of the structure;and the increase of the axial compression ratio in a certain range can enhance the energy dissipation capacity of the structure.(3)Adjust the number and location of shear walls in assembled frame-shear wall structure,and then analyze the seismic performance of the structure.It is found that when the shear wall of the structure is located on the side of horizontal displacement loading,the asymmetry of structural load is strong.When the structure adopts bilateral shear walls,the peak load of the structure is obviously larger than that of the single-side shear wall structure.The location of the shear wall has little effect on the stiffness degradation curve of the structure,but the number of shear walls can enhance the stiffness of the structure to a certain extent.The energy dissipation capacity of double-sided shear wall structure is obviously higher than that of single-sided shear wall structure.