（1 天津大学建筑工程学院， 天津 300072； 2 中国电力工程顾问集团东北电力设计院有限公司， 长春 130022）

［摘要］折板型弦支网架结构是在折板型网架结构的基础上，引入张拉整体思想，结合了折板型网架结构和弦支网架结构的优势。河北联合大学新校区体育馆钢屋盖采用折板型弦支网架结构，结构体系新颖。对该折板型弦支网架结构进行设计，对网架结构基本动力性能以及弹性与弹塑性抗震性能等方面进行分析研究，保证结构的安全可靠与正常使用。以本工程折板型弦支网架结构为例进行结构是否考虑非线性的对比分析，结果表明，对折板型弦支网架结构进行设计分析时需要考虑非线性，线性叠加分析的结果不可靠。对结构的节点进行了设计，主要采用焊接球节点，采用ABAQUS有限元分析软件对网架关键节点进行力学性能分析，结果表明，网架节点的受力性能良好，能保证结构连接的安全有效。

［关键词］折板型弦支网架结构； 力学性能； 非线性分析； 节点设计

中图分类号：TU356文献标识码：A文章编号：1002-848X(2018)02-0098-07

Mechanical performance analysis of flap-type string supporting grid structure

Wang Xin1, Chen Zhihua1, Jiang Yuting2, Li Zhiguo1, Zhang Junru1

(1 School of Civil Engineering， Tianjin University， Tianjin 300072， China; 2 Northeast Electric Power Design  Institute Co., Ltd. of China Power Engineering Consulting Group， Changchun 130022， China)

Abstract:Flap-type string supporting grid structure is based on the flap-type plate grid structure with introduction of tensegrity theory, and it combines with the advantages of flap-type grid structure and string supporting grid structure. The steel roof of stadium of New Campus of North China University of Science and Technology adopts flap-type string supporting grid structure and structural system is novel. The flap-type string supporting grid structure was designed and the basic dynamic performance and elastic and elastic-plastic seismic performances of the grid structure were analyzed and studied, so as to ensure the safety, reliability and normal use of the structure. The flap-type string supporting grid structure in this project was taken as an example to study whether the structure considers nonlinear analysis. The results show that the design and analysis of flap-type string supporting grid structure should consider nonlinear, and linear superposition analysis result is not reliable. The structural joints were designed, and the welded ball joints were mainly used. The mechanical properties of the key joints of the space truss were analyzed by using ABAQUS finite element analysis software. The results show that the mechanical performance of the grid joints is good, and it can ensure the safety and effectiveness of the structural connections.

Keywords:flap-type string supporting grid structure; mechanical property; nonlinear analysis; joint design

*天津市建交委项目（2014-1）。

作者简介：王鑫，硕士研究生， Email: 405260333@qq.com。