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(北京市建筑設(shè)計研究院 100045)
【提要】 結(jié)合張弦梁結(jié)構(gòu)的特點(diǎn)，詳細(xì)介紹了北京安福大廈中廳平面尺寸為504m×168m的雙向張弦梁結(jié)構(gòu)的布置和特點(diǎn)。研究表明，該張弦結(jié)構(gòu)的剛度較大，對不對稱荷載有較強(qiáng)的適應(yīng)能力，且?guī)缀畏蔷€性程度不高，可以采用線性分析結(jié)果進(jìn)行設(shè)計，并且針對張弦結(jié)構(gòu)預(yù)應(yīng)力值設(shè)計深入探討了預(yù)應(yīng)力值的確定原則，給出了確定預(yù)應(yīng)力值的計算公式。
【關(guān)鍵詞】 張弦梁 預(yù)應(yīng)力 非線性分析
Design and Analysis of Two Way Beam String Structure in Anfu Building/Zhang Sheng,Gan Ming,Fan Bo(Beijing Institute of Architectural Design,Beijing 100045,China)
Abstract:The plan size of atrium of Beijing Anfu building is 504m×168m,two way beam string structure is adopted to support its roof.The layout and character of this project is described.By thorough investigation,its concluded that the rigidity of the beam string structure in this project is relatively large,and its nonlinearity is not obvious.The result of linear analysis can be combined for component design.This structure is adaptive for nonsymmetrical loading distribution.Value of string pretension is important in beam string structure design.The method of pretension value design is discussed thoroughly;the formula of pretension calculation is introduced.
Keywords:beam string structure;prestress;nonlinear analysis