摘要
隔震技术已成为结构抗震的有效控制手段之一,并在国内外很多工程中得到成功应用,被认为是保护结构免受地震损伤最具工程价值的技术之一。本文总结了滑冲脉冲效应、方向性效应、上下盘效应、竖向地震动等近断层地震动特性对隔震结构抗震性能的影响,讨论了近断层地震动作用下隔震结构参数优化研究。通过对近断层区域隔震结构研究进展分析,从近断层区域内地震动的研究、隔震结构设计规范、隔震结构参数优化研究、隔震结构二阶效应、隔震的应用前景等方面,指出了近断层地震动作用下隔震结构研究与应用尚待进一步完善的若干问题,并提出了下一步研究的建议。
Seismic isolation technology has been an effective and reliable structural vibration method and achieved successfully both at home and abroad in engineering structures,which is considered as one of the most promising technology to protect building from strong earthquakes. Influences of seismic performance of base-isolated structures induced by near-fault earthquake characteristics,such as slippery blunt effect,directional effect,and upper and lower sides effect,are investigated in detail in this study. The developed horizontal three-dimensional isolation devices and also corresponding displacement-limit technologies for buildings in near-fault earthquake excitations are comprehensive summarized. The seismic performance and optimization analysis methods of buildings with the horizontal and three-dimensional isolation devices are reviewed and discussed. According to the above systematic reviews,some suggestions for base-isolated structures in near-fault earthquake excitations are proposed,and some key technical issues are listed,such as near-fault ground motion,base-isolated structure design code,base-isolated structure parameter optimization,base-isolated structure second-order effect and base-isolated application prospect.
出处
《工程抗震与加固改造》
北大核心
2015年第4期74-82,共9页
Earthquake Resistant Engineering and Retrofitting
基金
国家自然科学基金(51378135
51408140)
教育部博士点基金(20134410120003)
广东省优秀青年教师基金(Yq201402)
关键词
近断层地震
地震动特性
隔震结构
参数优化
near-fault earthquake
seismic characteristics
base-isolated structure
parameter optimization
