湖南大学学报（自然科学版）2024，Vol.51Issue(11)：208-217,10.DOI:10.16339/j.cnki.hdxbzkb.2024122
平面内弯矩作用下T形圆管相贯节点热点应力分布
Hot Spot Stress Distribution of CHS T-joints under In-plane Bending
摘要
Abstract
The study on the hot spot stress distribution along the intersecting weld of circular hollow section(CHS)T-joints under in-plane bending moment was carried out.A finite element mesh model of CHS T-joints was established by radial tension method.A mesh density analysis and experimental comparison analysis were conducted on the reliability of the hot spot stress analysis results,and a basic density mesh that meets the calculation accuracy requirements was proposed.The distribution law of hot spot stress along the intersection line and the influence of geometric parameters were summarized through dimensionless geometric parameter analysis.The phenomenon of wave-crest-splitting at the crown point and three pattern of curve near wave crest were discovered during the splitting process.On this basis,by using a coefficient with a period π,a curve shape correction method and distribution curve parameter formula were proposed to correct the curve shape near the crown point.A statistical analysis compared with formulas and experimental data from two scholars at University College London(UCL)shows that the formula in this paper has a more concise expression and higher accuracy.关键词
T形圆管相贯节点/平面内弯矩/热点应力分布/拟合公式Key words
circular hollow section(CHS)T-joint/in-plane bending/hot spot stress distribution/regression formula分类
建筑与水利引用本文复制引用
袁智深,姚尧,沈骅..平面内弯矩作用下T形圆管相贯节点热点应力分布[J].湖南大学学报（自然科学版）,2024,51(11):208-217,10.基金项目
国家自然科学基金资助项目(51608544),National Natural Science Foundation of China(51608544) （51608544）
湖南省自然科学基金资助项目(2023JJ31013),Natural Science Foundation of Hunan Province(2023JJ31013) （2023JJ31013）
长沙市自然科学基金资助项目(kq2208422),Natural Science Foundation of Changsha City(kq2208422) （kq2208422）
浙江树人学院引进人才科研启动项目(2022R052),Initiation Project for Introduced Talents of Zhejiang Shuren University(2022R052) （2022R052）
