【摘要】 因高强材料在结构工程中的应用,结构变得更高、更柔,为控制地震或风振引起的结构振动,结构减振技术的应用在我国日趋广泛。但是,日本3.11震后调查发现一些减振结构的减振装置出现损伤,其中一些甚至受到破坏,表明减振器是具有工作极限状态的。而目前世界范围内减振高层建筑极限破坏的研究尚未系统展开,面对我国频发、超预期发生的重(特)大地震灾害缺乏充分的应对策略和技术储备,当前的规范可能会对减振高层建筑的防灾带来重大挑战。本文总结了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,提出了研究减振高层建筑在强震等极端灾害下的极限破坏机理及控制理论和思路。更多还原

【Abstract】 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 suppress the structural vibration induced by the earthquakes or winds,the vibration control techniques are getting more applications currently. However,oil dampers of a steel building were 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 thoroughly. In this paper,several damage events of vibration-controlled buildings are reported after the field investigation 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 summarized. In the near future,more efforts needs to be spent in investigating the performance-based theory of controlled high-rise structures and establishing the integrated design and retrofit methodology which incorporates the idea of recoverable and replaceable dampers.更多还原