因高强混凝土和高强钢筋的采用,结构向更高、更柔的方向发展,为控制地震或风振引起的结构振动,结构减振技术的应用日趋广泛。但是,日本“3.11”震后调查发现一栋减振钢结构的油阻尼器发生了严重的损伤和破坏,表明减振器是具有工作极限状态的,而目前减振高层建筑极限破坏的研究尚未系统展开。首先描述了日本“3.11”地震后减振结构的震害案例,总结了对减振系统极限状态和减振高层建筑在极端灾害下的灾变机理的研究现状,针对减振高层建筑的本体结构和减振系统,提出了基于三个极限状态的研究思路,提炼了极限破坏机理、抗灾性能演化规律、设计和再生性能控制理论的三个关键问题,未来需要开展系统、深入的研究,探索考虑极端灾害效应的性能控制设计理论,建立减振系统可修复、可替换的高层建筑一体化初始/再生设计方法。
Due to the utilization of high-strength concrete and steel material in building construction,the high-rise buildings are becoming taller and more flexible.In order to supress the structural vibration induced by the earthquakes or winds,the vibration control techniques are getting more applications currently.Howev-er,oil dampers of a steel building had been damaged by the historic great earthquake of East Japan in 2011. This event proved that the dampers have their own limit states,which hasn’t been investigated fully and thor-oughly.In this paper,several damage events of vibration-controlled buildings are reported after the field inves-tigation of 3.11 Earthquake in Japan,including the oil dampers,steel dampers and lead isolators.And the state-of-the-art of current research in the failure process of vibration-controlled system and buildings is summa-rized.The framework of three limit states of vibration-controlled builidings is originally proposed to explore the failure mechanism of controlled structures,considering the coupling effect of the vibration-controlled system and structural mainframe.The key problems lie in the failure mechanism,the performance evolution and the performance-based design /retrofit pholosophy of vibration-controlled builidings.In the near future,more ef-forts needs to be spent in investigating the performance-based theory of controlled high-rise structures and es-tablishing the integrated design and retrofit methodology which incorporates the idea of recoverable and re-placeable dampers.