济南奥体中心体育馆整体结构分析

Structural analysis of the Gymnasium of Ji Nan Olympic Sports Center

济南奥体中心体育馆下部采用多层混凝土框架筒体结构,上部采用弦支穹顶结构.弦支穹顶的优化与找力分析采用单独的钢结构模型进行,以改善上部单层网壳的内力分布和水平、降低支座水平推力为优化目标,得到索杆体系的自平衡内力.设计中进一步采用整体总装模型进行分析以考虑下部混凝土结构的影响,校核上部钢结构,进行钢、砼结构连接界面构件设计.通过整体分析还研究了混凝土结构的弹性支承刚度退化对上部钢结构特别是拉索预拉力损失的影响及整体结构中弦支穹顶钢结构地震响应的变化规律.

The lower structure of Ji Nan Olympic Center Gymnasium is a multi-story concrete frame-tube structure.And the roof is a suspen-dome.The optimization of the suspen-dome and the force-finding were done by using a pure steel model to improve the force level and force distribution of the shell,and to lower the horizontal supporting forces.The self balanced inner forces of the cables and the vertical poles were obtained.To take into account the influence of the lower concrete structure,an assembled total model w...