土木建筑与环境工程
土木建築與環境工程
토목건축여배경공정
JOURNAL OF CIVIL, ARCHITECTURAL & ENVIRONMENTAL ENGINEERING
2009年
6期
22-26,80
,共6页
隔震结构%等效准则%等效模型%计算方法%地震反应
隔震結構%等效準則%等效模型%計算方法%地震反應
격진결구%등효준칙%등효모형%계산방법%지진반응
isolated structure%equivalent rule%equivalent model%calculations%seismic response
隔震技术不仅广泛应用在中低层建筑中,近来又被用于高层建筑结构的减震设计.对于高层隔震结构,隔震上部结构需考虑多阶振型影响,且因结构高宽比较大,总变形中存在的弯曲变形部分也应同时考虑.现有的两质点剪切型模型不能很好地反映实际结构的变形特点,一些学者提出的三质点模型,尚缺乏实际的操作性.为此,在已进行研究基础上,根据等效准则,通过对模型结构的计算分析,给出了针对弯剪变形类型规则型隔震结构等效模型的计算方法,利用该等效模型可较为方便对原隔震结构最大反应进行手工计算,从而提高了隔震设计的效率.计算实例表明,文中提出的计算方法是可行和可信的,等效模型与原结构地震反应具有很好等效性,且计算过程也较为简便.
隔震技術不僅廣汎應用在中低層建築中,近來又被用于高層建築結構的減震設計.對于高層隔震結構,隔震上部結構需攷慮多階振型影響,且因結構高寬比較大,總變形中存在的彎麯變形部分也應同時攷慮.現有的兩質點剪切型模型不能很好地反映實際結構的變形特點,一些學者提齣的三質點模型,尚缺乏實際的操作性.為此,在已進行研究基礎上,根據等效準則,通過對模型結構的計算分析,給齣瞭針對彎剪變形類型規則型隔震結構等效模型的計算方法,利用該等效模型可較為方便對原隔震結構最大反應進行手工計算,從而提高瞭隔震設計的效率.計算實例錶明,文中提齣的計算方法是可行和可信的,等效模型與原結構地震反應具有很好等效性,且計算過程也較為簡便.
격진기술불부엄범응용재중저층건축중,근래우피용우고층건축결구적감진설계.대우고층격진결구,격진상부결구수고필다계진형영향,차인결구고관비교대,총변형중존재적만곡변형부분야응동시고필.현유적량질점전절형모형불능흔호지반영실제결구적변형특점,일사학자제출적삼질점모형,상결핍실제적조작성.위차,재이진행연구기출상,근거등효준칙,통과대모형결구적계산분석,급출료침대만전변형류형규칙형격진결구등효모형적계산방법,이용해등효모형가교위방편대원격진결구최대반응진행수공계산,종이제고료격진설계적효솔.계산실례표명,문중제출적계산방법시가행화가신적,등효모형여원결구지진반응구유흔호등효성,차계산과정야교위간편.
Isolation technique was not only applied for middle or low buildings, but also recently it was applied to high-rise buildings. For high-rise buildings, multi-order vibration should be considered for upper structure isolation and bend deformation should be taken into account in gross deformation because of large height to width ratio. On the basis of previous studies, calculation method of equivalent model for regular isolated structure with bend-shear deformation characteristic was proposed according to equivalent criteria after the analysis for some model structures. With the proposed model, handwork calculation of earquake response for isolated structure can be simply completed and design efficiency of isolation structure was improved. Based on the case studies, the equivalency of proposed model was approved.