- 摘 要
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(北京中信和業(yè)投資有限公司，北京100020)
[摘要] 鋼管混凝土柱具有承載力大、抗震延性好、易于施工等優(yōu)點，本文首次提出了橫截面為多邊形的多腔鋼管鋼筋混凝土巨柱，為巨型結(jié)構(gòu)提供了一種有效的解決方案，并在天津高銀117、中國尊等超高層項目中得到了應(yīng)用，但是尚缺乏深入的研究成果。結(jié)合天津高銀117項目中多邊多腔鋼管鋼筋混凝土巨柱，通過有限元分析等技術(shù)手段，初步探討了多邊多腔鋼管鋼筋混凝土巨柱的力學(xué)性能，該巨柱的受壓承載力和受彎承載力較工程中常用的纖維元模型結(jié)果有一定提高，該巨柱的受扭承載力應(yīng)該采用有限元模型進(jìn)行分析，從而為多邊多腔鋼管鋼筋混凝土巨柱的設(shè)計提供依據(jù)和參考，結(jié)果可進(jìn)一步推廣到異形多腔等類型的鋼管混凝土柱。
[關(guān)鍵詞] 多腔；鋼管混凝土；巨柱；力學(xué)性能
中圖分類號：TU375.3 文獻(xiàn)標(biāo)識碼：A 文章編號：
作者簡介：姚攀峰，結(jié)構(gòu)設(shè)計總監(jiān)，高級工程師，一級注冊結(jié)構(gòu)工程師，注冊巖土工程師， Email：yaopanfeng@tsinghua.org.cn。
Mechanics performance study on multi-cell CFST mega-column with polygonal cross-section
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Abstract: Concrete filled steel tube column have a lot of advantages, such as high bearing capacity, ductility, easy construction etc., Multi-cell CFST Mega-column with polygonal cross-section is 1st provided, which gives an effective solution for mega-structure, and successfully used in Tianjin Golden 117 tower, Beijing CBD Zhongguo zhun super high-rise building, but till now, these complex columns still lack of research. The multi-cell CFST mega-column used is from the real project of Tianjin 117, from the paper, we use FEM analysis method, will shows some preliminary mechanics about this type mega-column, the mega-column capacity in both pressure and curvature will increased compared with normal fiber analysis model, and the torsion capacity should be use the FEM analysis method. All of this will give some reference and basis for this type mega-column design, the result also can be used in the normal multi-cavity column in polygonal section shape concrete filled column.
Keywords：multi-cell；concrete filled steel tube；mega-column；mechanical performance
參考文獻(xiàn)
[1] 奧雅納工程顧問.天津市高新區(qū)軟件和服務(wù)外包基地綜合配套區(qū)中央商務(wù)區(qū)一期項目-高銀117大廈超限設(shè)計可行性論證[M].2版. 2009..
[2] 鐘善桐.鋼管混凝土結(jié)構(gòu)[M]. 北京：清華大學(xué)出版社, 2003.
[3] Elremaily A, Azizinamini A. Behavior and strength of circular concrete-filled tube columns[J]. Journal of Construction Research. 2002.
[4] 蔡紹懷.現(xiàn)代鋼管混凝土結(jié)構(gòu)[M]. 北京：人民交通出版社, 2003.
[5] 韓林海, 楊有福. 現(xiàn)代鋼管混凝土結(jié)構(gòu)技術(shù)[M]. 北京：中國建筑工業(yè)出版社, 2004.
[6] 聶建國,柏宇,李盛勇,等.鋼管混凝土核心柱軸壓組合性能分析[J].土木工程學(xué)報，2005,38(9):9-13.
