沈阳文化艺术中心单层折板空间网格结构整体模型试验研究

发布时间：2018-04-18 14:36

本文选题：单层折板网格结构 + 整体模型静力试验　；参考：《建筑结构学报》2017年01期

【摘要】：沈阳文化艺术中心主体结构采用不规则单层折板空间网格结构,此结构面内、面外刚度受结构折板构型影响较大,内力分布与整体稳定性对折板构型的变化敏感。因此,对该结构进行了整体模型试验,以考察结构设计的安全性。针对试验模型构型复杂、加载难度大等特点,设计了基于"并联弹簧拉索按刚度分配荷载"的顶面网格加载系统和基于"使用定滑轮实现荷载转向"的侧面网格加载系统,完成对模型竖向恒载、活载与水平风载工况的有效模拟。试验结果表明,在设计荷载范围内,随着荷载的增大,结构位移与内力响应基本呈线性发展,模型竖向荷载向基础的传递主要依靠竖向主构件实现,环向主构件起拉结作用。同时,对模型结构进行了有限元分析,分析结果与试验结果吻合较好,验证了有限元分析模型的合理性与分析结果的准确性。在此基础上,进行了原型结构的稳定承载力分析和出现局部破坏时的抗连续性倒塌分析,证实该结构在设计荷载下具有足够的稳定承载能力和抗倒塌性能。
[Abstract]:The main body structure of Shenyang Culture and Art Center adopts irregular single-layer folded plate spatial grid structure. The in-plane and out-of-plane stiffness of the structure is greatly affected by the structure folding-plate configuration, and the distribution of internal force and the overall stability are sensitive to the change of the folded plate configuration.Therefore, the overall model test is carried out to investigate the safety of the structure design.In view of the complex configuration of the test model and the difficulty of loading, the top grid loading system based on "parallel spring cable distributing load according to stiffness" and the side grid loading system based on "using fixed pulley to realize load steering" are designed.The effective simulation of vertical dead load, live load and horizontal wind load is completed.The experimental results show that the displacement and internal force response of the structure develop linearly with the increase of the load in the range of design load. The vertical load transfer of the model is mainly realized by the vertical main member, and the ring main member plays the role of tension.At the same time, the finite element analysis of the model structure is carried out, and the results are in good agreement with the experimental results, which verifies the rationality and accuracy of the finite element analysis model.On this basis, the stability bearing capacity of the prototype structure and the continuous collapse analysis of the prototype structure under local failure are analyzed. It is proved that the structure has sufficient stable bearing capacity and anti-collapse performance under the design load.
【作者单位】：同济大学土木工程学院;上海建筑设计研究院有限公司;
【基金】：沈阳五里河建设发展有限公司江苏沪宁钢机股份有限公司的大力支持
【分类号】：TU399

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