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为准确把握多种施工因素对大跨度弦支穹顶结构静力性能的影响,以济南奥体中心体育馆为例,基于有限元数值分析方法,建立了122m的大跨度弦支穹顶结构模型,计算分析了预应力拉索施工阶段支座的约束状态和预应力拉索施工全过程对大跨度弦支穹顶静力性能的影响以及上层网壳施工安装偏差和施工环境温度对其稳定性能的影响。分析结果表明,上述四类施工因素对该大跨度弦支穹顶结构的静力性能有不同程度的影响,因此,在大跨度弦支穹顶的结构设计与施工过程中,应综合考虑各类施工因素的影响以确保结构在各阶段的可靠度。
In order to accurately grasp the influence of many construction factors on the static performance of the long-spanped suspen-dome structure, taking the Jinan Olympic Sports Center Stadium as an example, a 122m long-span suspend-over dome structure model is established based on the finite element numerical analysis method. The influence of the restraint state of prestressed cable support and the whole process of prestressed cable construction on the static performance of the long-spanped suspen-dome and the influence of construction deviations and construction environment temperature on the stability of the upper shelled dome were studied. The analysis results show that the above four types of construction factors have different degrees of influence on the static performance of the long-spanped suspen-dome structure. Therefore, in the process of structural design and construction of the long-spanped chordal dome, various construction factors The effect of ensuring the reliability of the structure at all stages.