结构工程师
結構工程師
결구공정사
STRUCTURAL ENGINEERS
2014年
3期
205-212
,共8页
减振高层建筑%减振器%三个极限状态%性能再生%日本“3.11”地震
減振高層建築%減振器%三箇極限狀態%性能再生%日本“3.11”地震
감진고층건축%감진기%삼개겁한상태%성능재생%일본“3.11”지진
vibration-controlled structure%energy dissipation device%three limit states%rehabilitation%3.11 earthquake
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。
因高彊混凝土和高彊鋼觔的採用，結構嚮更高、更柔的方嚮髮展，為控製地震或風振引起的結構振動，結構減振技術的應用日趨廣汎。但是，日本“3．11”震後調查髮現一棟減振鋼結構的油阻尼器髮生瞭嚴重的損傷和破壞，錶明減振器是具有工作極限狀態的，而目前減振高層建築極限破壞的研究尚未繫統展開。首先描述瞭日本“3．11”地震後減振結構的震害案例，總結瞭對減振繫統極限狀態和減振高層建築在極耑災害下的災變機理的研究現狀，針對減振高層建築的本體結構和減振繫統，提齣瞭基于三箇極限狀態的研究思路，提煉瞭極限破壞機理、抗災性能縯化規律、設計和再生性能控製理論的三箇關鍵問題，未來需要開展繫統、深入的研究，探索攷慮極耑災害效應的性能控製設計理論，建立減振繫統可脩複、可替換的高層建築一體化初始/再生設計方法。
인고강혼응토화고강강근적채용，결구향경고、경유적방향발전，위공제지진혹풍진인기적결구진동，결구감진기술적응용일추엄범。단시，일본“3．11”진후조사발현일동감진강결구적유조니기발생료엄중적손상화파배，표명감진기시구유공작겁한상태적，이목전감진고층건축겁한파배적연구상미계통전개。수선묘술료일본“3．11”지진후감진결구적진해안례，총결료대감진계통겁한상태화감진고층건축재겁단재해하적재변궤리적연구현상，침대감진고층건축적본체결구화감진계통，제출료기우삼개겁한상태적연구사로，제련료겁한파배궤리、항재성능연화규률、설계화재생성능공제이론적삼개관건문제，미래수요개전계통、심입적연구，탐색고필겁단재해효응적성능공제설계이론，건립감진계통가수복、가체환적고층건축일체화초시/재생설계방법。
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.
