Hybrid Test Method Based On Model Updating For Prefabricated Shear Wall Structure

For a long time,in many large earthquakes,the terrible natural disaster of earthquake has brought a painful lesson to people all over the world.Countless families have lost their relatives and suffered economic losses.The May 12 earthquake in China and the January 12 earthquake in Haiti in Chile caused many deaths and injuries.The collapse of buildings and structures is the main reason.In order to study the earthquake disaster response,the seismic test method is widely used.On the basis of hybrid test,aiming at the disadvantage of "size effect" of large-scale structural test model for structural dynamic response research,scholars put forward the method of Substructure Hybrid test.And in today’s construction and civil engineering development field,prefabricated concrete structure has a good prospect.Therefore,the main research contents and conclusions of this paper are as follows:(1)Aiming at the sleeve connection prefabricated shear wall structure,the hybrid test method based on UKF identification updating is studied,the sleeve connection prefabricated shear wall structure model is determined,and the accuracy of the model is proved.(2)The nonlinear beam column element is used to establish the model of sleeve connection prefabricated shear wall structure.Based on the new model updating hybrid test method considering the nonholonomic boundary conditions,the numerical simulation analysis is carried out to verify the feasibility of the method.The simulation results show that the method is feasible.(3)The layered shell element is used to establish the model of sleeve connection prefabricated shear wall structure,and the simulation analysis is carried out.Based on the hybrid test system,the model updating hybrid test considering nonholonomic boundary conditions is carried out to verify the feasibility of the method.The results of numerical simulation and mixed test show the reliability of the method.