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    范  重  尤天直  王春光  沈婭萍
    （中國(guó)建筑設(shè)計(jì)研究院  北京 100044）

[提要]  寧波國(guó)際會(huì)展中心主展廳大跨度屋蓋支承條件復(fù)雜，風(fēng)荷載效應(yīng)顯著。通過(guò)風(fēng)洞試驗(yàn)確定屋蓋的風(fēng)壓分布情況，在網(wǎng)殼結(jié)構(gòu)的部分鋼管中填充混凝土以平衡部分風(fēng)吸力。采用抗震球形鋼支座克服支座相對(duì)位移對(duì)屋蓋結(jié)構(gòu)產(chǎn)生的影響。
[關(guān)鍵詞]  大跨度結(jié)構(gòu)  網(wǎng)殼  風(fēng)洞試驗(yàn)  特殊支座

The supporting conditions for the large span roof of Main Hall in Ningbo International Conference & Exhibition Center are very complicated, and response of the structure under wind loads is significant. The distribution of wind pressure on the roof is determined by wind tunnel test. The method that the hollow sections of structural members are filled with concrete for counteracting a part of upward wind forces is innovated. Special bearing-devices are adopted to overcome differential displacements between the bearings that are fixed on the tops of the five independent buildings and several cantilever columns extended from ground level.
Keywords:  large span structure; cylindrical gird shell; wind tunnel approach; special bearing