Analytic Study On The Foundation Of Three To Six Degree Seismic Shaking Table

The most effective method is to simula te the seism ic response of earthquake shaking table test. The foundation of shak ing table is the vital com ponent of earthquake simulation shaking table. The design of the f oundation directly influences the performance of shaking table and the accuracy of shaking tab le test. In th e research field of earthquake simulation shaking table, there are so many studies abut test method and control system of shaking table until now but le ss in theoretical research. Suzhou university of Science and Technology is ready for building a earthquake simulation shaking table, which ow ns three directions and six degrees of freedom. The size of it can be described as 8m times 6m. The table-board m aximum load of the shaking table is 150 t and the load is the lar gest one at home. So the study for the foundation of shaking table is especially important.According to the analysis and compar ison about existing foundation cases of shaking table, this paper designed and cal culated earthquake simulation shaking table foundation of Suzhou university of Sc ience and T echnology based on existing geological conditions. W e carried out finite elem ent simulation for shaking table foundation of Suzhou university of Scien ce and Technology by abaqus software and attained the dynam ic response of foundation. For verifying the accuracy of finite simulation, the shaking table(6m times 6m) of NPIC wa s simulated before this simulation. After comparing value of sim ulation and measured value, we found that this analysis method can be used in sim ulating the shaking table foundation of this university.Foundations based on natu ral subsoil and pile f oundation were sim ulated respectively. After comparing the simulated results in the two conditions, we can find that the acceleration response of pile foundation is smaller than that of natural subsoil. So the foundation in the form of pile foundation is feasib le. And this paper provides guidance for the design and construction of shaking table foundation.