Study On Shear Resistance Of New Energy-Consumption Prefabricated One-Line Shear Wall Joints

The precast reinforced concrete shear wall studied in this paper is a new type of reinforced concrete shear wall-soft steel damper composite structure system.In order to study the performance of the composite structure of precast reinforced concrete-soft steel damper,this paper takes abaqus finite element analysis software as the platform and establishes the finite element model for analysis.The energy dissipation shear wall model of four groups without edge components and nine sets of models with edge components are established respectively.In the energy-dissipation shear wall model without edge components,the yield angle of the open seam 200 mm model is 0.0021 rad,the yield bending moment is 442.6kNxm,the initial stiffness is 210761kn/rad,and the total energy consumption is obtained by applying the reciprocating angle load.Compared with the open seam 200 mm model,the model yield angle of the open seam 250mm~350mm increases the 4.76%~33.33%,the yield bending moment decreases 3.98%~7.14%,the initial stiffness decreases 8.34%~30.86%,and the total energy consumption decreases 4.22%~11.56%.With the increase of seam width,the yield angle increases,the yield bending moment decreases,the initial stiffness decreases,and the total energy consumption decreases.In the energy-consuming shear wall model with edge members,it is concluded that the yield displacement of eight groups of open seam shear wall increases 31%~50%,the yield load decreases the 4.5%~16.55%,the initial strength decreases 36%~51%,and the ultimate displacement increases 50%~104% by applying the reciprocating horizontal displacement.The ultimate load reduces the 2%~9%,the ductility coefficient increases the 2%~56%,and the energy consumption increases 35%~141%.The slit width is 250 mm,and the shear wall model with the bending unit as 133mmx20mm(the damper number Z1),that is,the model numbered M1,has the best performance,the yield displacement is increased by 31%,the yield load is reduced by 16.55%,;Initial strength reduced by 36%;limit displacement increased by 104%;limit load decreased by 9%;ductility coefficient increased by 56%.Energy consumption increased by 141%.Figure54,Table10,Reference60.