石油化工设备技术 ›› 2023, Vol. 44 ›› Issue (4): 19-23,34.doi: 10.3969/j.issn.1006-8805.2023.04.004

• 静设备 • 上一篇    

典型储罐罐顶网壳结构力学性能分析研究

王彦龙1,王 十2,邢 述2,都 亮2   

  1. 1. 中国石化海南炼油化工有限公司,海南 578101;
    2. 中国特种设备检测研究院,北京 100026
  • 收稿日期:2023-05-07 接受日期:2023-06-30 出版日期:2023-07-15 发布日期:2023-07-24
  • 通讯作者: 都 亮 E-mail:wangyanlong107@163.com
  • 作者简介:王彦龙,男,2012年毕业于青岛科技大学过程装备与控制工程专业,学士,主要从事静设备管理工作,工程师。

Analysis and Study on Mechanical Properties of Typical Tank Roof Reticulated Shell Structure

Wang Yanlong1, Wang Shi2, Xing Shu2, Du Liang2   

  1. 1. SINOPEC Hainan Petrochemical Co., Ltd., Hainan, 578101;
    2. China Special Equipment Inspection and Research Institute, Beijing, 100026
  • Received:2023-05-07 Accepted:2023-06-30 Online:2023-07-15 Published:2023-07-24
  • Contact: Du Liang E-mail:wangyanlong107@163.com

摘要: 为分析某20 000 m3内浮顶储罐固定顶钢制单层球面网壳结构的失效原因,对失效结构材料进行化学成分和力学性能分析,结果显示,毂节点杆端铸件含硫量、试验样件断后伸长率和断后收缩率均不符合相关标准要求。利用通用有限元分析软件,对该罐顶网壳分别进行设计工况和失效工况下的强度、刚度和稳定性分析,分析结果表明,部分杆件长细比超过设计规范要求,失效工况下杆端构件实际应力值超过材料抗拉强度设计值,结构发生强度破坏。

关键词: 罐顶网壳, 毂节点, 力学性能, 失效分析

Abstract: In order to analyze the failure reasons of a steel single-layer spherical reticulated shell structure with fixedroof on one 20,000 m3 internal floating roof tank, the chemical composition and mechanical properties of the failure structure materials were analyzed. The results show that the sulfur content of the rod end castings of the hub joint, elongation after fracture and shrinkage after fracture of the test sample did not meet the requirements of relevant standards. Using the general finite element analysis software, the strength, stiffness and stability of the reticulated shells under design and failure conditions were analyzed respectively. And the analysis results indicate that the length to slenderness ratio of some members exceeded the design specification requirements, and the actual stress value of the member at the end of the rod exceeded the design value of the tensile strength of the material under failure conditions, which resulted in the strength failure of the structure.

Key words: tank roof reticulated shell, hub joint, mechanical properties, failure analysis