某复杂大跨度站房屋盖结构静力加载试验模型设计

发布时间：2018-03-30 16:38

本文选题：大跨度屋盖结构　切入点：缩尺模型　出处：《土木建筑与环境工程》2016年S2期

【摘要】：主次桁架、变椭圆截面钢斜柱、钢管格构式斜柱、单层椭球壳和鱼眼形结构共同组成了一复杂大跨度站房屋盖结构。为进一步了解结构的力学性能,对该结构进行了试验模型设计并完成了模型静力加载试验。模型设计过程中,在结构纵向截取有代表性的基本单元,其涵盖了屋盖的主要结构特征,并制作了1∶20的大比例缩尺模型。在模型设计中利用相似原理进行了各参数相似比的确定,然后进行了屋盖结构与下部结构间的支座条件模拟。为验证缩尺模型的合理性,对实际模型与试验模型采用有限元软件进行了相似原理验证。验证结果表明:缩尺结构模型能够反应实际结构的基本受力性能。该文的研究成果可为类似工程的模型试验设计与制作提供参考。
[Abstract]:The main and secondary truss, steel obliquity column with variable ellipse section, steel tube lattice inclined column, single layer ellipsoid shell and fish-eye structure make up a complex long-span station roof structure.In order to further understand the mechanical properties of the structure, the experimental model was designed and the static loading test was completed.In the process of model design, the representative basic units are intercepted in the longitudinal direction, which covers the main structural characteristics of the roof, and a large scale scale model of 1:20 is made.In the design of the model, the similarity principle is used to determine the similarity ratio of each parameter, and then the supporting conditions between the roof structure and the substructure are simulated.In order to verify the rationality of the scale model, the finite element software was used to verify the similarity between the actual model and the experimental model.The results show that the scale structure model can reflect the basic mechanical performance of the actual structure.The research results in this paper can be used as a reference for the design and manufacture of model tests for similar projects.
【作者单位】：浙江大学建筑设计研究院有限公司;浙江大学空间结构研究中心;
【分类号】：TU399

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