Latest progress of centrifugal shakers in NEES and developmental conception of domestic centrifugal shakers
Zhenzhong Cao · World Earthquake Engineering · 2010
The Network for Earthquake Engineering Simulation(NEES)in the United States represents the latest experimental techniques in earthquake engineering,in which the centrifugal shaker construction plays an important role.Nevertheless,the present domestic centrifugal shaker situation is remarkably not adaptable to the wide territory,complicated engineering geotechnical conditions,rapid economy growth and serious seismic risks in China.The state-of art for the domestic centrifugal shaker techniques and the objective demands is outlined,and it closely follows the progress of NEES centrifugal shakers.By analyzing the developmental histories and latest information of the centrifugal shakers at UC Davis and RPI,it proposes the necessities and developing keys to build the centrifugal shakers in China.Also it emphasizes significance of technology platform research and development of the centrifugal shaker,and according to the requirements of researching soil dynamics and geotechnical earthquake engineering in China,are proposed developing keys as shaking loading,frequency bandwidth,directional multitudes,low-frequency displacements,auxiliary experimental functions and network etc.Finally,suggestions for some important technique specifications of the centrifugal shaker to be developed are provided.