| 世博轴阳光谷整体稳定性分析研究 |
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| 引用本文： | 崔家春.世博轴阳光谷整体稳定性分析研究[J].土木建筑工程信息技术,2011,3(1):73-78. |
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| 作者姓名： | 崔家春 |
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| 作者单位： | 同济大学,上海,200092;上海现代建筑设计(集团)有限公司,上海,200041 |
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| 摘 要： | 2010年上海世博轴屋面体系由索膜结构和6个阳光谷钢结构组成,其中阳光谷为自由曲面单层网壳结构。由于阳光谷体量大、杆件截面尺寸小,具有网壳结构的典型特征,所以其稳定性是设计中关心的关键问题之一。本文对第一号阳光谷进行了整体稳定性分析研究。通过调整不同参数,研究了几何非线性、材料弹塑性及初始几何缺陷对结构整体稳定性的影响。分析结果表明,不同条件下结构的稳定承载力均满足国家相关规范要求;加载至第一个临界荷载时部分构件已经进入塑性,表明结构的失稳破坏后于强度破坏。本文采用的方法和研究内容可为类似工程的分析与设计提供参考。
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| 关 键 词： | 世博轴 阳光谷 单层网壳 整体稳定 初始缺陷 |
The Research of Overall Stability Analysis of Sun Valley of Expo Axis |
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| Cui Jiachun.The Research of Overall Stability Analysis of Sun Valley of Expo Axis[J].Journal of Information Technology in Civil Engineering and Architecture,2011,3(1):73-78. |
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| Authors: | Cui Jiachun |
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| Affiliation: | Cui Jiachun (Tongji University,Shanghai 200092,China,Shanghai Xian Dai Architectural Design (Group) Co.,Ltd.,Shanghai 200041,China) |
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| Abstract: | The project Expo Axis is a landmark building of Expo Shanghai 2010. Its roof system is composed of a cable-membrane structure and six free-form single-layer latticed shells named Sun Valley. Sun Valleys are different in shape and size and provide eighteen support points for cable-membrane structure. Because there is no clause used for free-form structure in current codes and specifications, it is difficult to carry on stability analysis for Sun Valleys. The Sun Valley NO.1 is studied for overall stability a... |
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| Keywords: | Expo Axis Sun Valley Single-Layer Latticed Shell Overall Stability Initial Imperfection |
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