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.

当前标准和焊接空心结构部分（HSS）连接指南中的设计规定假设连接两侧都具有足够连续性的和弦成员。对于桁架/梁末端的连接，由于违反了和弦 - 连续性的假设，因此现有的设计公式不适用。因此，“终端连接”设计的指南越来越受到追捧，因为这是工程师遇到的实用设计问题。拟议的研究将通过实验测试和使用有限元（FE）技术的实验测试和高级计算机模拟来生成和发布用于计算应力浓度因子（SCF）（SCFS）的实用设计指南。