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    楊宗林，  陳  魯，  張其林
    (同濟(jì)大學(xué)土木工程學(xué)院，上海200092)

[摘要] 進(jìn)行了上海世博軸膜結(jié)構(gòu)縮尺模型試驗(yàn)研究，試驗(yàn)中測(cè)試了初始狀態(tài)時(shí)拉索拉力和膜面初始應(yīng)力，與膜結(jié)構(gòu)設(shè)計(jì)計(jì)算軟件進(jìn)行了對(duì)比；觀察了斷索情況下膜結(jié)構(gòu)的變形特點(diǎn)和安全性能。試驗(yàn)表明，現(xiàn)行膜結(jié)構(gòu)設(shè)計(jì)計(jì)算軟件在計(jì)算大型復(fù)雜膜結(jié)構(gòu)時(shí)具有較高的可靠性，世博軸膜結(jié)構(gòu)在斷索情況下不會(huì)發(fā)生連續(xù)倒塌現(xiàn)象。
[關(guān)鍵詞] 世博軸膜結(jié)構(gòu)；縮尺模型試驗(yàn)；初始狀態(tài)比較；斷索下安全性

    Test of Membrane Roof Shanghai Expo Axis
    Yang Zonglin, Chen Lu, Zhang Qilin
    ( College  of Civil  Engineering,Tongji  University, Shanghai 200092, China)

Abstract: The reduced size model test is conducted for the central axis roof of 2010 Shanghai Expo.  The cable forces and membrane surface stresses are measured at the initial pre-stressed state, and are compared with the results from the existing design and computational software. The behaviors and safety of the membrane roof under occasional cable breaking are observed. Test shows that the computational software is reliable, and there will be no consequential crash under occasional cable breaking.
Keywords: membrane roof for Shanghai Expo Axis; size reduced model test, initial state comparison; safety under occasional cable breaking