首例油阻尼器破坏对结构设计的经验教训———日本3·11地震的启示.PDF

第31卷第2期 结　 构　 工　 程　 师 Vol.31,No.2 2015年4月 Structural Engineers Apr. 2015 首例油阻尼器破坏对结构设计的经验教训 ———日本3 ·11地震的启示 1 1 1,2,∗ 谢丽宇　 唐和生　 薛松涛 (1.同济大学结构工程与防灾研究所,上海200092;2.东北工业大学建筑系,日本,仙台982-8577) 摘　 要　 日本3 ·11震后调查发现一栋消能减震钢结构上的油阻尼器发生了严重的损伤和破坏,表明 消能构件在极端荷载作用下是可能受损、甚至完全失效的。 明确提出了在设计概念上,消能构件是提高 结构抗震能力的附属设备,是可消耗的、可替换的,应重视消能减震结构的抗震概念设计。 总结了消能 减震结构基于性能的设计方法还有许多问题需进一步解决和完善。 关键词　 消能减震结构,消能构件,油阻尼器,极限状态, 日本3 ·11地震 Lessons Learned for Design of Passively-controlled Structures from the Great East Japan Earthquake 1 1 1,2,∗ XIE Liyu 　 TANG Hesheng 　 XUE Songtao (1.Institute of Structural Engineering and Disaster Reduction,Tongji University,Shanghai200092,China; 2.Department of Architecture,Tohoku Institute of Technology,Sendai982-8577,Japan) Abstract　 Oil dampers of a steel building in Sendai City were seriously damaged by the Great East Japan Earthquake in 2011. This event showed the dampers have their own limit states under extreme loading condition,which hasn’t been investigatedfully andthoroughly.Thispaper indicatesthat the energy dissipation devices are additional componentsfor improving the seismic capacity of the main frame,and these devices are disposable and replaceable when degraded or damaged. The seismic design concept of passively-controlled structures should be studiedandvaluedduringtheinitial design stage.Inthenearfuture,moreeffortsneedsto be spent in investagating the performance-based theory of passively-controlled structures. Keywords　 passively-controlled structure,energy dissipation device,oil damper,limit state,the Great East Japan Earthquake 的附加阻