Shaking Table Test for Seismic Response of Nuclear Power Plant on Non-Rock Site

In order to compare and analyze the seismic response characteristics of a safety-related nuclear structure on non-rock site in condition raft pile group foundations under unidirectional multidirectional motion input, large-scale shaking table test soil-nuclear system was carried out this paper. test, soil uniform silted clay, shear wave velocity 213 m/s. Considering similarity superstructure natural frenquency, actual power simplified three-story frame wall model. The annular laminated model box used take boundary effect into consideration; motions = were input only one horizontal direction or three directions at same time for results analyzed. show that acceleration plant is affected by forms foundation. When simultaneously directions, responses vertical rocking are larger than those single-direction input. with foundation smaller values most frequency bands Fourier amplitude spectrum top pile-foundation raft-foundation structure, while displacement basically as structure. This related relation between component system. Therefore, it more reasonable use three-dimensional analysis plants. performance plants can be enhanced using foundations.