销铰节点螺栓销轴常幅疲劳性能试验研究与仿真分析

兰州理工大学学报 ›› 2024, Vol. 50 ›› Issue (2): 111-117.

销铰节点螺栓销轴常幅疲劳性能试验研究与仿真分析

焦晋峰^*1,2, 樊丽轩², 李渊², 魏珍中³, 刘勇³

1.吕梁学院建筑与土木工程系, 山西吕梁 033001;
2.太原理工大学土木工程学院, 山西太原 030024;
3.山东电力工程咨询院有限公司, 山东济南 250013

收稿日期:2021-06-22 出版日期:2024-04-28 发布日期:2024-04-29
通讯作者: 焦晋峰(1979-),男,山西晋城人,博士,教授.Email:jiaojf_1@126.com
基金资助:
国家自然科学基金(12172244),山西省省筹资金资助回国留学人员科研项目(2023-175),山西省基础研究计划资助项目(202203021211184),山西省自然科技研究基金(202103021223105),吕梁市高层次科技人才引进计划专项项目(2023RC15)

Experimental study and simulation analysis on constant amplitude fatigue of the bolt pin in pinned connection

JIAO Jin-feng^1,2, FAN Li-xuan², LI Yuan², WEI Zhen-zhong³, LIU Yong³

1. College of Architecture and Civil Engineering, Lyuliang University, Lyuliang 033001, China;
2. College of Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
3. Shandong Electric Power Engineering Consulting Institute Co. Ltd., Jinan 250013, China

Received:2021-06-22 Online:2024-04-28 Published:2024-04-29

摘要/Abstract

摘要： 为揭示空间结构销铰节点螺栓销轴常幅疲劳破坏机理、探清其疲劳强度影响因素,对M36螺栓销轴进行疲劳试验.基于自行设计的加载装置,进行了9个螺栓销轴的常幅疲劳试验;采用nCode疲劳仿真分析软件对其进行4因素共32个模型疲劳模拟参数化分析.试验结果和数值模拟表明:销铰节点中最大等效应力位于内外耳板与螺栓销轴交界处,且该处应力集中程度严重;在忽略试件初始缺陷和试验加载等不利因素下,数值模拟所得疲劳寿命部分高于相应疲劳试验寿命,并基于线性拟合得到了该螺栓销轴的S-N曲线和理论疲劳寿命估算公式;螺栓销轴常幅疲劳强度与加载应力比/螺栓直径两个参数正相关,与销孔间隙初始增长呈负相关,且与耳板间距基本无关;螺栓销轴常幅疲劳性能影响因素敏感性顺序为:销孔间隙→螺栓直径→应力比→耳板间距.

关键词: 空间结构, 螺栓销轴, 常幅疲劳, 数值模拟, 参数分析

Abstract: In order to reveal the constant amplitude fatigue failure mechanism of bolt pin shaft in pin hinge joint of spatial structure and explore the influencing factors of fatigue strength, the fatigue test of M36 bolt pin shaft was carried out. Based on the self-designed loading device, the constant amplitude fatigue tests of 9 bolt pin shafts were conducted. The nCode fatigue simulation analysis software was used to do parameterized analysis of 32 models with 4 factors for fatigue simulation. The results shows that the maximum equivalent stress in the pin hinge joint appears at the junction of the inner and outer padeye and the bolt pin shaft, where the stress concentration is serious. Neglecting unfavorable factors such as initial defects of the specimen and experimental loading, the fatigue life obtained from numerical simulation is partially higher than the corresponding fatigue test life. The S-N curve and theoretical fatigue life estimation formula of the bolt pin shaft are obtained based on linear fitting. The constant amplitude fatigue strength of bolt pin shaft is positively correlated with the loading stress ratio and bolt diameter, negatively correlated with the initial growth of pin hole clearance, and has nothing to do with the ear plate spacing. The sensitivity order of influencing factors of constant amplitude fatigue performance of bolt pin shaft is: the gap of pin hole, the bolt diameter, the loading stress ratio, the ear plate spacing.

Key words: space structure, bolt pin, constant amplitude fatigue, numerical simulation, parametric analysis

中图分类号:

TU391

焦晋峰, 樊丽轩, 李渊, 魏珍中, 刘勇. 销铰节点螺栓销轴常幅疲劳性能试验研究与仿真分析[J]. 兰州理工大学学报, 2024, 50(2): 111-117.

JIAO Jin-feng, FAN Li-xuan, LI Yuan, WEI Zhen-zhong, LIU Yong. Experimental study and simulation analysis on constant amplitude fatigue of the bolt pin in pinned connection[J]. Journal of Lanzhou University of Technology, 2024, 50(2): 111-117.

参考文献

[1] 许强,苏项庭,关超.关于钢销轴设计的几点讨论 [J].建筑钢结构进展,2018,20(3):78-85.
[2] 张滨,孙文波.基于赫兹理论的销轴连接修正设计方法研究 [J].建筑结构学报,2018,39(S1):410-417.
[3] 张彩亮,张玉芳,张志国,等.中、美、欧钢结构规范中关于销轴连接计算差异对比 [J].钢结构(中英文),2019,34(12):93-97+87.
[4] 丁大益,令狐珺竹,施刚,等.大跨重载钢结构梁柱销轴节点承载性能试验研究 [J].天津大学学报(自然科学与工程技术版),2015,48(S1):53-59.
[5] 丁大益,王元清,潘斌,等.大跨度楼面桁架销轴节点承载性能试验研究 [J].湖南大学学报(自然科学版),2016,43(1):76-82.
[6] 令狐珺竹.钢结构梁柱销轴节点研究 [D].北京:清华大学,2017.
[7] 汲生伟,贾玉.某重载大跨度钢结构销轴连接承载力分析 [C]//2020年工业建筑学术交流会论文集.北京:工业建筑杂志社,2020:154-157.
[8] 刘勤.减震型销轴支座的有限元分析及试验研究 [D].石家庄:石家庄铁道大学,2018.
[9] 邹建磊,李闯,刘仕源.销轴及关节轴承的节点构造与安装施工 [J].建筑技术,2019,50(9):1088-1090.
[10] 谢志东.结构疲劳强度分析及工程应用 [D].杭州:浙江大学,2008.
[11] DUERR D.Pinned connection strength and behavior [J].Journal of Structural Engineering,2006,132(2):182-194.
[12] ZHAO J X,WU B,OU J P.A practical and unified global stability design method of buckling-restrained braces: discussion on pinned connections [J].Journal of Constructional Steel Research,2014,95: 106-115.
[13] KAVOURA F,GENCTURK B,DAWOOD M.Evaluation of existing provisions for design of “pinned” column base-plate connections [J].Journal of Constructional Steel Research,2018,148:233-250.
[14] NOURI F,VALIPOUR H R,BRADFORD M A.Finite element modelling of steel-timber composite beam-to-column joints with nominally pinned connections [J].Engineering Structures,2019,201:109854.
[15] 戴俊平,栗宜猛,尤迪,等.基于nCode的新型汽车半轴的疲劳分析 [J].机械工程师,2015(4):66-68.
[16] 张乐.丛式井多级压裂管柱接头密封评价与疲劳寿命分析 [D].西安:西安石油大学,2020.
[17] LUO H,LI Z,XIONG Q,et al.Study on the wind- induced fatigue of heliostat based on the joint distribution of wind speed and direction [J].Solar Energy,2020,207:668-682.
[18] 中华人民共和国住房和城乡建设部.GB 50017—2017 钢结构设计标准[S].北京:中国建筑工业出版社,2018.
[19] 焦晋峰,李渊,刘勇,等.销铰连接M36高强螺栓常幅疲劳性能试验 [J].科学技术与工程,2021,21(9):3740-3746.
[20] 赵华.螺纹管接头的弹塑性应力分析 [J].机械工程学报,1997,33(1):87-92.