（中国建筑西南设计研究院有限公司， 成都 610042)

［摘要］临沂奥体中心体育场罩棚采用车辐式单层索网结构，上覆PTFE膜。对其外环受压桁架方案、索网大变形情况下附属结构及其与索网连接安全性、屋面排水方案等进行了专项研究。研究结果及采取相应措施如下：变宽度的外环受压桁架可减小索网尺寸、缩小内外环形状差异，改善外环受压桁架自身及斜柱受力； 荷载作用下单层索网变形较大，竖向位移超过规范限值，为此从《钢结构设计标准》（GB 50017—2017）限制结构变形的本意出发，通过一定构造措施保证了附属结构及其连接能适应结构大变形。最后，针对马鞍形屋面特点，采用场内场外排水相结合，局部设置附加排水口等措施，保证屋面排水顺畅。

［关键词］车辐式单层索膜结构； 变宽度外环受压桁架； 索膜静力分析； 连接构造适应性分析； 屋面排水分析

中图分类号：TU398-7， TU318文献标识码：A文章编号：1002-848X(2020)19-0001-07

Design on spoke tensioned canopy structure with single layer cable and membrane of Linyi Olympic Sports Center Stadium

WU Xiaobin, CHEN Qiang, CHEN Zhiqiang, XIA Xun, XIE Junqiao

(China Southwest Architectural Design and Research Institute Co., Ltd., Chengdu 610042, China)

Abstract:The canopy of Linyi Olympic Sports Center Stadium adopts spoke tensioned structure with single layer cable and membrane covered with PTFE membrane. Special studies were carried out on the outer ring compression truss scheme, attached structure and its connection safety with cable network under the condition of large deformation of cable network, roof drainage scheme and so on. The research results and corresponding measures are as follows: outer ring compression truss with multiple widths can reduce the size of cable network, reduce the difference of the shape of inner and outer rings, and improve the stress of outer ring compression trusses and inclined columns; the single-layer cable network deforms greatly under the action of load, and the vertical displacement exceeds the limit value of the specification. Therefore, based on the original intention of Standard for design of steel structures (GB 50017—2017) to limit the deformation of the structure, certain structural measures are taken to ensure that the auxiliary structure and its connections can adapt to the large deformation of the structure. Finally, according to the characteristics of saddle-shaped roofing, measures were adopted such as combining drainage from inside and outside and setting additional drainage outlets locally to ensure smooth roof drainage.

Keywords:spoke tensioned structure with single layer cable and membrane; outer ring compression truss with multiple widths; static analysis of cable and membrane; adaptability analysis of structure connection; roof drainage analysis

作者简介：吴小宾，硕士，教授级高级工程师，Email: wumat@vip.sina.com； 通信作者：陈强，硕士，高级工程师，Email: 419788322@qq.com。