Research On Substructure Pseudo-dynamic Test Methods With Finite Element Software

Structural experiment plays a very important role on structural engineering and earthquake engineering, especially on the research of earthquake-resistant performance. The complexity of earthquake mechanism, structural earthquake resistant performance, and the development of structural engineering technology makes structural experiment face great challenge, including complication, large scale. In order to complete an experiment, substructure testing was adopted. By exchanging data between the finite element software and electro hydraulic servo system MTS, the research of structural earthquake resistant performance can be done successfully. Substructure testing with finite element software emerges as the times required. It is the forward research field of international civil engineering academia.At present, the system of collaborative structure experiment based on OpenFresco has been developed by the University of California at Berkeley in America, which builds up a network protocol platform to integrate numerical simulation and experimental control system. Finite element software ABAQUS and OpenSees were used to carry out numerical simulation. From the application level, material, experimental element and flexibility method were expatiated in this paper. The data between the finite element software and electro hydraulic servo system MTS can be exchanged successfully. Some example analysis and research have been done to show the method is approximate and reliable, as follows:Pseudo-static substructure testing was adopted to research the seismic response of steel frame of one bay one story with finite element software ABAQUS for the first time in China. By comparing the results between pseudo-static substructure testing and finite element software simulation, the results accorded approximately. It is turned out that pseudo-static substructure testing with OpenFresco can research sub-component of structures experimentally, and this method can simulate the numerical substructure in nonlinear. The function of pseudo-static substructure testing is widely expended.Pseudo-dynamic substructure testing was adopted to research the seismic response of steel frame of one bay one story with finite element software ABAQUS for the first time. By comparing the results between pseudo-dynamic substructure testing and finite element software simulation, the results accorded approximately. It is turned out that pseudo-dynamic substructure testing with OpenFresco can research sub-component of structures experimentally, and this method can simulate the numerical substructure in nonlinear. The function of pseudo-dynamic substructure testing is widely expended.Pseudo-dynamic substructure testing was adopted to research the seismic response of concrete bridge of two span with finite element software OpenSees. By comparing the results between pseudo-dynamic substructure testing and finite element software simulation, the results accorded approximately. It is turned out that pseudo-dynamic substructure testing with OpenFresco can research substructures experimentally. The function of pseudo-dynamic substructure testing is widely expended.