光谷空轨高新大道站钢结构顶棚设计与分析

Design and analysis on steel structure roof of Guanggu Air Rail High-tech Avenue Station

为了实现光谷空轨高新大道站钢结构顶棚外侧悬挑和中央抬高天窗的建筑造型,提出了叠级自平衡结构体系,即第一级弦支穹顶自平衡结构形式和第二级双侧悬挑梁柱框架自平衡结构形式,实现了建筑和结构功能形态的统一融合,解决了细柱受压问题并消除对基础的影响。采用SAP2000对结构进行了静力和非线性稳定分析,补充了ABAQUS梁柱节点应力分析,按上部结构受力特点采用了内侧桩基外围独基结合的基础形式。结果表明,上部结构和基础设计合理,整体稳定性较好,梁柱节点受力良好。

In order to achieve the architectural modeling of the outer cantilever and the central raised skylight of the steel structure roof of Guanggu Air Rail High-tech Avenue Station.A cascade self-balancing structure system was proposed,namely the first level of the self-balancing structure of the suspen-dome and the second level of the self-balancing structure of the double-side cantilever beam-column frame,which realized the unified integration of the architectural and structural functional forms,and solved the problem of thin column compression and eliminated the impact on the foundation.The static and nonlinear stability analysis of the structure was carried out by using SAP2000,which supplemented the stress analysis of ABAQUS beam-column joints,based on the stress characteristics of the upper structure,a foundation form combining inner pile foundation and outer single foundation was adopted.The results show that the upper structure and foundation design is reasonable,the overall stability is good,and the beam-column joints are well stressed.