【摘要】 美国地震工程网络模拟系统(NEES)代表了国际地震工程试验技术的最新发展趋势,其中振动离心机的建设占有重要地位,而国内振动离心机的现状与我国辽阔的地域、复杂的工程地质条件、高速发展的经济建设以及严峻的地震形势十分不相称。文中概述了我国振动离心机的现状和客观需求,对NEES系统中振动离心机的发展进行了跟踪研究,通过分析UCDavis和RPI两台振动离心机的发展历程和最新进展,阐述了我国振动离心机发展的必要性及重点。强调应加强离心机振动台技术的研发,根据国内当前土动力学和岩土地震工程科学研究的需要,提出了以振动负载为主要指标的思想,指出了发展重点应放在振动负载、频宽、多向、低频位移、辅助试验功能和网络化功能等方面,对一些重要指标提出了建议。更多还原

【Abstract】 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.更多还原