A Study On Application And Hybrid Testing Based On OpenSEES And MTS

The seismic test of building structure is always important and difficult point in the research field of structural engineering.Seismic research requires that building structures should be under simulated earthquake load,In order to observe the strength,deformation,nonlinear performance and the actual damage state of the structure,In the end,the test results can be applied to the actual project.However,the structural form of modern architecture is more exotic and complex,The building height also frequently refresh record.Traditional seismic test methods can not meet the requirements of application accuracy and efficiency.Therefore,it is crucial to seek new test methods.The hybrid seismic test method based on the finite element software and MTS test loading system is proposed.At present,the method has been paid attention and application in the field of engineering earthquake resistance,and has made many breakthroughs.As a result of this,In this paper,based on the OpenSEES and MTS hybrid test system,the hybrid seismic test is carried out.Specific content are as follows:(1)The conventional seismic research methods are summarized and analyzed,introduced the principle,software and equipment as well as the domestic and foreign research and development status of the hybrid test method.(2)On the basis of the existing equipment in the laboratory of structural engineering in Xinjiang university,Using OpenFresco seismic hybrid test platform and command program,The finite element software Open SEES and the laboratory MTS loading control system are connected to form a set of finite element numerical calculation and physical tes.(3)By using this system,the pseudo dynamic mixing test is carried out for a single layer steel frame,The results of hybrid test and numerical simulation are compared and analyzed to verify the effectiveness and feasibility of the hybrid test system.(4)On the basis of mixed test system,The influence of the initial stiffness and boundary conditions on the test results is further studied.The results show that:The hybrid test system based on OpenSEES and MTS can complete the Substructure Hybrid Test,Meet the accuracy and feasibility of the test,Substructure test can replace the whole structure test;The accurate simulation of the initial stiffness and boundary conditions of the members will bring about the deviation of the test results...