Stress concentration factors for truss/girder-end hollow section connections

桁架/梁端空心截面连接的应力集中系数

• 批准号: 567025-2021
• 负责人: Sun, Min
• 金额: $ 1.46万
• 依托单位: University of Victoria
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=722419
• 关键词: Stress; concentration; factors; truss; girder

The design provisions in the current standards and guidelines for welded hollow structural section (HSS) connections assume a chord member with sufficient continuity on both sides of a connection. For connections at the end of a truss/girder, the existing design formulae do not apply because the chord-continuity assumption is violated. Therefore, guidance on design of "end connections" has become increasingly sought after since this has been a practical design problem encountered by engineers. The proposed research will generate and publish practical design guidance for calculation of stress concentration factors (SCFs) for fatigue design of end connections via experimental testing and advanced computer simulation using the finite element (FE) technique.

焊接空心结构截面（HSS）连接的现行标准和指南中的设计规定假定弦杆在连接的两侧具有足够的连续性。对于桁架/梁端部的连接，现有的设计公式不适用，因为违反了弦连续性假设。因此，“端部连接”的设计指导变得越来越受欢迎，因为这是工程师遇到的实际设计问题。拟议的研究将产生和出版实用的设计指导计算应力集中系数（SCF）的疲劳设计的端部连接通过实验测试和先进的计算机模拟，使用有限元（FE）技术。