杨宗林，  陈  鲁，  张其林
    (同济大学土木工程学院，上海200092)

[摘要] 进行了上海世博轴膜结构缩尺模型试验研究，试验中测试了初始状态时拉索拉力和膜面初始应力，与膜结构设计计算软件进行了对比；观察了断索情况下膜结构的变形特点和安全性能。试验表明，现行膜结构设计计算软件在计算大型复杂膜结构时具有较高的可靠性，世博轴膜结构在断索情况下不会发生连续倒塌现象。
[关键词] 世博轴膜结构；缩尺模型试验；初始状态比较；断索下安全性

    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