济南奥体中心体育馆弦支穹顶结构设计

Structural design of the suspen-dome for 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.弦支穹顶是一种新颖的杂交空间结构,由上部单层网壳和下部索杆张拉体系构成.首先简单介绍了该弦支穹顶结构的结构形式,并采用有限单元法进行了荷载分析、模态分析、线性与非线性稳定性分析等.基于抗连续倒塌的思想,分析了弦支穹顶局部断索后的结构性能.弦支穹顶的施工张拉模拟是结构设计的难点,本文给出了各个张拉状态的控制参数.弦支穹顶的设计中还采用整体结构模型进行分析校核.

A suspen-dome suppotred by concrete frame and canister below is adopted in the Jinan Olympic Center Gymnasium.Suspen-dome is a novel hybrid spatial structure which is composed of the upper single-layer latticed shell and the lower cable-struts.A brief instruction of the structural is presented first.Then the load analysis,modal analysis,linear and nonlinear buckling analysis of the suspen-dome are descirbed.The cable breaking anlysis of the structure is also carried out in order to prevent continue collcaps...