煤炭工程 ›› 2022, Vol. 54 ›› Issue (5): 26-31.doi: 10.11799/ce202205005

• 设计技术 • 上一篇    下一篇

平板网架支座约束状态分析

高岩,杨小军,焦小哲   

  1. 中煤西安设计工程有限责任公司
  • 收稿日期:2021-12-13 修回日期:2022-01-27 出版日期:2022-05-13 发布日期:2022-05-23
  • 通讯作者: 高岩 E-mail:gaoyand@126.com

Analysis on restraint state of flat grid support in coal engineering

  • Received:2021-12-13 Revised:2022-01-27 Online:2022-05-13 Published:2022-05-23

摘要: 为了促进网架结构在煤炭行业的推广应用,解决设计中存在的网架支座约束状态的设置问题,介绍了厂房屋面平板网架设计,分析了厂房平板网架支座约束状态定义。利用材料力学的理论对悬臂柱支座等效弹簧刚度进行了求解。 明确了网架支座切向、法向支座及弹性支座约束状态的计算方法。以吉郎德露天煤矿主厂房的屋面为工程背景,结合3D3S Design 2021结构通用有限元软件计算结果,探讨了三种不同支座约束状态下网架受力状况,明确了设置橡胶垫支座改善支座刚度不均匀所起的作用。

关键词: 网架结构, 温度作用, 侧移刚度, 支座约束状态, 等效弹簧刚度

Abstract: In view of the application of reticulated shell structure in coal industry, the design of flat space truss on plant roof is introduced, and the definition of constraint state of support of flat space truss is analyzed.The equivalent spring stiffness of cantilever column support is solved by using the theory of material mechanics.The calculation method of tangential and normal support constraint state of grid support is clarified.Taking the roof of the main power house of Ji Lang De open pit coal mine as the engineering background.According to the calculation results of general finite element software of 3D3S design 2021 structure, the stress conditions of space truss under two different support constraints are discussed.

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