- 摘 要
-
（1 中衡設(shè)計(jì)集團(tuán)股份有限公司， 蘇州 215021; 2 江蘇省生態(tài)建筑與復(fù)雜結(jié)構(gòu)工程技術(shù)研究中心， 蘇州 215021）
［摘要］在結(jié)構(gòu)方案設(shè)計(jì)階段，對常見的8種結(jié)構(gòu)體系進(jìn)行了較為詳細(xì)的分析對比，最終采用框架（矩形鋼管混凝土柱+鋼梁-偏心支撐結(jié)構(gòu)體系。提出了消能梁段數(shù)值模型，采用PERFORM-3D軟件進(jìn)行了整體結(jié)構(gòu)在大震作用下動(dòng)力彈塑性分析，評估其抗震性能及塑性發(fā)展過程。結(jié)果表明，此類結(jié)構(gòu)通過控制框架剪力分擔(dān)率，可形成雙重抗震防線。在小震、中震作用下結(jié)構(gòu)抗側(cè)剛度較大，大震作用下消能梁段首先剪切屈服，整個(gè)抗側(cè)體系存在明顯的抗側(cè)演化過程，耗能能力強(qiáng)、抗震性能良好且經(jīng)濟(jì)合理?；诖笳鹱饔孟孪芰憾嗡苄赞D(zhuǎn)角需求設(shè)計(jì)腹板加勁肋，此方法保證結(jié)構(gòu)設(shè)計(jì)與性能目標(biāo)要求的一致性。
［關(guān)鍵詞］鋼框架-偏心支撐； 雙重抗震防線； 消能梁段； 剪切屈服； 塑性轉(zhuǎn)角
中圖分類號：TU375-2， TU317-1文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2016)23-0010-08
Application study of steel eccentrically braced frame structural system in high seismic intensity areas
Zhang Jin1,2, Yang Lülei1,2, Zhu Xunyan1,2, Lu Jianglong1,2
（1 ARTS Group Co., Ltd., Suzhou 215021， China; 2 Jiangsu Engineering Institute of Ecological Building & Complex Structure， Suzhou 215021， China）
Abstract:In the structure scheme design stage, 8 kinds of common structural systems were analyzed and compared in detail. Finally, the eccentrically braced frame structural system with rectangular steel tube concrete column and steel beam was adopted. The numerical model of energy dissipated link beam was proposed, and the dynamic elastic-plastic analysis of the whole structure under the action of rare earthquake was carried out by using PERFORM-3D software to evaluate its seismic performance and plastic development process. The results show that this kind of structure can form a dual seismic line by controlling the shear sharing ratio of the frame. Under the frequent earthquake and fortification earthquake, structural lateral stiffness was large, and energy dissipated link beam first suffered shear yield under the action of rare earthquake. The lateral resistant system existed obvious lateral evolution process, with strong energy dissipation capacity, good seismic performance and reasonable economy. The plastic corner of the link beam under the action of rare earthquake should be used for the design of web plate stiffener, and this method ensure the consistency of structural design and seismic performance demand.
Keywords:steel eccentrically braced frame; dual seismic lines; energy dissipated link beam; shear yield; plastic rotation angle
作者簡介：張謹(jǐn)，研究員級高級工程師，一級注冊結(jié)構(gòu)工程師， 英國注冊結(jié)構(gòu)工程師，Email:zhangjin@artsgroup.cn。
- 下載地址
-
