世博轴阳光谷钢结构设计与研究

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。

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

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,re...