世博轴阳光谷钢结构设计与研究  

Design and reseach of Sun Valley steel structure for the Expo Axis project

作　　者：汪大绥[1] 方卫[1] 张伟育[1] 丁生根[1] 王荣[1] 高超[1] 张安安 

机构地区：[1]华东建筑设计研究院有限公司,上海200002 [2]上海世博土地控股有限公司,上海200125

出　　处：《建筑结构学报》2010年第5期20-26,共7页Journal of Building Structures

基　　金：国家科技支撑计划世博科技专项:世博轴及地下综合体关键技术研究(2009BAK43B06);上海市科学技术委员会科研计划项目世博科技专项:世博轴及地下综合体关键技术研究(08dz0580300)

摘　　要：世博轴及地下综合体工程为2010年上海世博会园区标志性建筑之一,其顶棚结构由阳光谷钢结构和索膜结构组成。针对阳光谷体型尺度大、曲面空间复杂、悬挑跨度大、三角形网格组成的单层钢结构体系的特点,结构设计进行了多遇地震作用下的弹性分析、反应谱法罕遇地震作用分析、罕遇地震作用下结构的弹塑性时程分析。分析结果表明,阳光谷结构不仅在各种荷载组合工况下处于弹性工作状态,并且具有较好的抗震性能,达到了大震弹性的抗震能力;结构的控制荷载主要为风荷载;结构传力途径丰富,具有良好的承载能力。The Expo Axis project and its underground multi system is the landmark building of the World Expo Shanghai 2010.Its roofing system is composed of cable-membrane structure and Sun Valley steel structures.Sun Valley is a steel single-layer latticed shell consisting of triangular grid.As to its characteristics with complicated curved surface,huge size and large cantilever span,single layer system etc.The structural design was applied with approaches like elastic analysis under frequently-occurred earthquake,response spectra method under rarely-occurred strong earthquake,and structural elasto-plastic time-history analysis under rarely-occurred strong earthquake as well.Results from all analyses show that structural system of the Sun Valley structure not only works within elastic range under all load combinations but also has good earthquake-resistant performance and all members work elastically under strong earthquake motion.Wind load is the primary design concern among all the loads.The structure presents a good bearing behavior due to all types of loads.

关 键 词：单层网格结构 弹性分析 弹塑性时程分析 结构设计 抗震性能 

分 类 号：TU393.3[建筑科学—结构工程] TU318