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(1 東南大學(xué)土木工程學(xué)院，南京 210096； 2 南京市建筑設(shè)計(jì)研究院，南京 210005)
［摘要］南京金奧大廈超高層建筑采用巨型支撐-筒中筒三重抗側(cè)力結(jié)構(gòu)體系，其中提供抗側(cè)力剛度及支承外掛墻體的巨型鋼斜支撐為此結(jié)構(gòu)的一大特點(diǎn)。巨型鋼斜支撐的節(jié)點(diǎn)采用異形鑄鋼連接節(jié)點(diǎn)，對(duì)其進(jìn)行了在平衡和不平衡荷載工況下的3個(gè)足尺模型試驗(yàn)研究，利用ANSYS軟件進(jìn)行了有限元分析。有限元分析結(jié)果與試驗(yàn)實(shí)測(cè)值吻合良好。結(jié)果表明，節(jié)點(diǎn)應(yīng)力分布不均勻，銷栓孔壁承壓區(qū)局部應(yīng)力集中但無(wú)明顯塑性變形，該節(jié)點(diǎn)基本處于彈性階段工作，可以滿足結(jié)構(gòu)多道設(shè)防的性能化設(shè)計(jì)要求。
［關(guān)鍵詞］巨型斜支撐；異形鑄鋼節(jié)點(diǎn)；有限元分析；足尺試驗(yàn)
Experimental study on the cast steel joint with extraordinary shape of mega diagonal brace in Nanjing Jin’ao Tower
Shu Ganping1, Yang Benzheng1, Zuo Jiang2, Lu Jianfeng2(1 College of Civil Engineering, Southeast University, Nanjing 210096, China;2 Nanjing Architectural Design & Research Institute Co., Ltd., Nanjing 210005, China)
Abstract:The multiple lateral force resisting system consisting of reinforced concrete tube-intube system and mega diagonal steel braces system which was designed to provide stiffness against drift and also support the exterior wall was used in the high-rise building, Nanjing Jin’ao Tower. The full-scale experimental study on 3 cast steel joints of the diagonal brace with extraordinary shape under balance or unbalance loading was carried out. The FEM analysis by ANSYS software was also performed to investigate the joint. The calculating results are in good agreement with those of tests. It is shown that the stress distribution in the joint is various and local stress concentration occurs at the compressive area of the pin hole but plastic distortion is unconspicuous. The joint is basically in elastic state and able to satisfy the seismic performance requirements of the structural design.
Keywords:mega diagonal brace; cast steel joint with extraordinary shape; FEM analysis; full-scale experiment
作者簡(jiǎn)介：舒贛平，博士，教授，Email: sgp0818@vip.sina.com。
參考文獻(xiàn)
［1］羅永峰,等.上海南站無(wú)柱雨棚鑄鋼節(jié)點(diǎn)試驗(yàn)研究［J］. 鋼結(jié)構(gòu), 2006, 88(5): 7-10.
［2］周明華. 土木工程結(jié)構(gòu)試驗(yàn)與檢測(cè)［M］. 南京:東南大學(xué)出版社, 2002.
［3］卞若寧,等. 空間結(jié)構(gòu)大型鑄鋼節(jié)點(diǎn)試驗(yàn)研究［J］. 建筑結(jié)構(gòu)，2002,32(12): 45-47.
［4］鄒連海,吳京,等. 南京奧體中心體育場(chǎng)鋼屋蓋主拱鑄鋼節(jié)點(diǎn)試驗(yàn)方案研究［J］. 江蘇建筑, 2005,91(1): 14-16.
［5］劉錫良,等.鑄鋼節(jié)點(diǎn)的設(shè)計(jì)以及在工程中的應(yīng)用［J］. 工業(yè)建筑, 2005,35(11):27-30.