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(1 同濟(jì)大學(xué)土木工程學(xué)院，上海 200092; 2 奧雅納工程咨詢(上海)有限公司，上海 200031)
［摘要］對(duì)圓鋼管銷鉸連接中端板的力學(xué)性能進(jìn)行了研究。建立了端板的簡(jiǎn)化力學(xué)模型，對(duì)端板的受力機(jī)理進(jìn)行了探討。建立了便于使用的端板承載力計(jì)算公式，根據(jù)建立的100個(gè)有限單元參數(shù)模型的線彈性計(jì)算結(jié)果，給出了計(jì)算公式中各系數(shù)的計(jì)算表格，給出了表格的使用方法和算例。最后對(duì)計(jì)算表格的有效性進(jìn)行了評(píng)價(jià)，并得出一些對(duì)此類節(jié)點(diǎn)設(shè)計(jì)有參考價(jià)值的結(jié)論。
［關(guān)鍵詞］鋼管節(jié)點(diǎn)；支座節(jié)點(diǎn)；端板；承載力
Ultimate capacity of unstiffened cover-slab of tubular structure using in the supporting joint
Meng Xiande1, Chen Yiyi1, Du Chunling2(1 College of Civil Engineering, Tongji University, Shanghai 200092, China；2 Arup International Consultants (Shanghai) Co., Ltd., Shanghai 200031, China)
Abstract:Ultimate capacity of unstiffened cover-slab of tubular structure using in the supporting joint is researched. The mechanical principle of the unstiffened cover-slab is discussed, and the mechanical models are established. Based on the model, the formulas of bearing capacity are recommended. According to the results of finite element analysis of 100 models which vary with the geometrical parameters, two handy tables of the factors in the bearing capacity formulas are established. And the applying method of the tables is given by an example. Finally the evaluation on validity of the tables is given，and some valuable conclusions are drawn from the tables.
Keywords:tubular joint; supporting joint; cover-slab; ultimate capacity
作者簡(jiǎn)介：孟憲德，博士生，Email:mxd13816871099@126.com。
參考文獻(xiàn)
［1］M M K LEE. Strength, stress and fracture analyses of offshore tubular joints using finite elements［J］. Journal of Constructional Steel Research, 1999, 51: 265-286.
［2］吳家龍. 彈性力學(xué)［M］. 上海：同濟(jì)大學(xué)出版社，1987.
［3］GB50017—2003鋼結(jié)構(gòu)設(shè)計(jì)規(guī)范［S］.北京：中國(guó)計(jì)劃出版社，2003.
［4］JIHAD S JUBRAN, WILLIAM F. Cofer finite-element modeling of tubular joints［J］. Journal of Structural Engineering, 1995, 121: 496-508.