884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

丁生根，汪大綏，高  超，方  衛(wèi)，張偉育，王  榮
(現(xiàn)代設(shè)計(jì)集團(tuán)華東建筑設(shè)計(jì)研究院有限公司，上海200002)

[摘要] 世博軸及地下綜合體工程是2010年上海世博會(huì)園區(qū)標(biāo)志性建筑，其屋頂體系由索膜頂棚結(jié)構(gòu)和陽(yáng)光谷鋼結(jié)構(gòu)組成。文章分別介紹了索膜頂棚結(jié)構(gòu)和陽(yáng)光谷鋼結(jié)構(gòu)各自的結(jié)構(gòu)特點(diǎn)。對(duì)索膜結(jié)構(gòu)，闡述了設(shè)計(jì)中膜材的安全系數(shù)取值、風(fēng)荷載取值、膜面應(yīng)力位移分析、防連續(xù)倒塌分析及地震作用的考慮等內(nèi)容；對(duì)陽(yáng)光谷鋼結(jié)構(gòu)，闡述了其整體受力、變形特點(diǎn)、節(jié)點(diǎn)設(shè)計(jì)特點(diǎn)。得出了作為大跨度柔性張拉結(jié)構(gòu)的索膜頂棚和大跨度單層網(wǎng)殼結(jié)構(gòu)的陽(yáng)光谷均滿足設(shè)計(jì)要求的結(jié)論。
[關(guān)鍵詞] 世博軸；索膜結(jié)構(gòu)；陽(yáng)光谷；非線性；倒塌分析；整體穩(wěn)定

Structural Design of Cable-Membrane Roof and Sun Valley Steel Structure for Expo Axis Project
Ding Shenggen, Wang Dasui, Gao Chao, Fang Wei, Zhang Weiyu, Wang Rong
( East China Architectural Design & Research Institute Co.,  Ltd. , Xian Dai Architectural Design Group, Shanghai 200002, China)

Abstract: The project Expo Axis and its underground multi system is the landmark building of Expo Shanghai 2010. Its roof system is composed of cable-membrane structure and Sun Valley steel structure. This paper provides a brief introduction on structural features of the membrane structure and the steel structure respectively. For the merubrane structure, topics on safety factor of membrane materials, determination of wind loading, stresses and displacements, failure analysis and earthquake effects are discussed. For the Sun Valley steel structure, the overall structural behavior including intemal forces and deformations and the design of nodal joints are introduced, and the effect of single member buckling on overall structural stability is also presented. It is proved that the long-span flexible tensile membrane roof and the single layer latticed shells of Sun Valleys all meet the design requirements.
Keywords: Expo axis; membrane structures; Sun Valley; nonlinear, failure analysis; overall stability behavior