(1 中冶建筑研究总院有限公司， 北京  100088； 2 东南大学混凝土及预应力混凝土结构教育部重点实验室， 南京 210096； 3 中国建筑科学研究院有限公司， 北京  100013)

［摘要］介绍了一种由折杆剪式单元构成的径向开合网架，推导了网架开合过程中各节点的运动特性及界限；此外，为了解决其支座设置困难的问题，在外圈设置环向布置的滑移杆及滑移杆外圈的多边形轨道，并验证其功能与构造上的可行性与合理性。通过上述过程，开发出一种带外圈滑移杆及内凹式轨道的径向开合屋盖，证明了其在开合性能上的可行性与合理性。

［关键词］剪式单元； 开合网架； 运动特性

中图分类号：TU318-1文献标识码：A文章编号：1002-848X(2019)04-0028-05

Research on the motion characteristics of radial opening and closing grid

Zhu Yifeng1, Cai Jianguo2, Lu Dong3

（1 Central Research Institute of Building & Construction Co., Ltd. Mcc Group, Beijing 100088， China; 2 Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education，Southeast University, Nanjing 210096, China; 3 China Academy of Building Research, Beijing 100013, China）

Abstract:A radial opening and closing grid composed of folding bar shearing units was introduced, and the motion characteristics and boundaries of each node during the opening and closing of the grid were derived. In addition, in order to solve the difficulty in setting up supports, the ring-arranged sliding rod and the polygonal track of the outer ring of the sliding rod were arranged on the outer ring, and the feasibility and rationality of the function and structure were verified. Through the above process, a radial opening and closing roof with an outer ring sliding rod and a concave track was developed, and  its feasibility and rationality in opening and closing performance was proved.

Keywords:shearing units; opening and closing grid; motion characteristics

作者简介：朱奕锋，博士，教授级高级工程师，Email:zhuyf2003@vip.sina.com。