轮辐式张拉结构几何形态及其受力分析

发布时间：2018-01-30 16:06

本文关键词： 轮辐式张拉结构几何形态马鞍形高差支撑柱飞柱　出处：《建筑结构学报》2016年06期 　论文类型：期刊论文

【摘要】：轮辐式张拉结构因其优良的受力性能,在大型体育场馆结构体系的应用中具有独特的优势。为了适应建筑形态的变化,对轮辐式张拉结构几何形态进行了系统分析和研究,以达到结构型式与建筑形态的融合。分别对轮辐式张拉结构的平面形态、屋面形态和飞柱高度等进行了研究,并针对轮辐式张拉结构内拉环边界和建筑内环不重合情况,提出了内拉环作为建筑椭圆边界的内切圆和外切圆两种处理方法。通过分析可知,对于EC型(内环平面为圆形,外环平面为椭圆形)结构,外压环短轴与长轴之比应大于0.8,对于CE型(外环平面为圆形,内环平面为椭圆形)结构,内拉环短轴与长轴之比应大于0.8;屋面马鞍形高差小于15 m时,宜采用双层轮辐式张拉结构,且高差越小结构的受力性能越好,屋面马鞍形高差大于15 m时,宜采用单层轮辐式张拉结构,且高差越大结构的受力性能越好;对于体育场跨度为230~250 m,屋盖悬挑长度为55~60 m,内拉环飞柱的高度宜取14~18 m,飞柱高度12 m以下的结构,其受力性能较差,不建议采用。
[Abstract]:Because of its excellent mechanical performance, the spoke tensioning structure has a unique advantage in the application of large-scale stadiums and gymnasiums, in order to adapt to the change of architectural form. The geometrical form of the spoke tensioning structure is analyzed and studied systematically in order to achieve the fusion of the structural form and the architectural form. The plane shape of the spoke tensioning structure is separately studied. The roof shape and flying column height are studied, and the boundary of the inner tension ring and the inner ring of the building are not coincident with each other. Two processing methods of inner tangent circle and outer tangent circle of inner pull ring as the elliptic boundary of building are put forward. Through analysis, it can be known that for EC type structure (inner ring plane is circular, outer ring plane is elliptical). The ratio of the short axis to the long axis of the outer pressure ring should be greater than 0.8, and the ratio of the short axis of the inner pull ring to the long axis should be greater than 0.8 for the CE type (the outer ring plane is circular and the inner ring plane is elliptical); When the saddle height difference of roof is less than 15 m, the double spoke tension structure should be adopted. The smaller the height difference is, the better the mechanical performance of the structure is, and when the saddle height difference of roof is greater than 15 m. The single spoke tension structure should be adopted, and the greater the height difference is, the better the mechanical performance of the structure is. For the structure whose span is 230 ~ 250 m, roof cantilever length is 55 ~ 60 m, the height of inner pull ring flying column is 14 ~ 18 m and the height of fly column is less than 12 m. Its mechanical performance is poor, not recommended.
【作者单位】：同济大学建筑设计研究院(集团)有限公司;同济大学土木工程学院;
【分类号】：TU398.9
【正文快照】： 0引言轮辐式张拉结构受力合理,造型优美,同时能够与建筑功能及造型完美结合。该结构体系源于自行车轮辐条结构,内拉环和外压环通过径向索连接,形成自平衡受力体系。轮辐式张拉结构在发展过程中形成了内凹形和外凸形两种基本体系(图1),两种结构体系不仅屋面造型不同,结构的受力

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