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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

42卷

期数:

2025年04期

页码:

83-91

栏目:

建筑结构

出版日期:

2025-07-10

文章信息/Info

Title:

Fatigue performance analysis of tensile flange welds in beam-column joints of three-dimensional garages

文章编号:

1673-2049(2025)04-0083-09

作者:

潘康,贺拥军

(湖南大学 土木工程学院,湖南 长沙 410082)

Author(s):

PAN Kang, HE Yongjun

(College of Civil Engineering, Hunan University, Changsha 410082, Hunan, China)

关键词:

立体车库;  高周疲劳;  dload子程序;  车辆移动荷载;  焊缝形式;  车厢形式;  等效结构应力法

Keywords:

three-dimensional garage;  high-cycle fatigue;  dload subroutine;  vehicle movement load;  weld form;  carriage form;  equivalent structural stress method

分类号:

TU248.3

DOI:

10.19815/j.jace.2024.01024

文献标志码:

A

摘要:

为研究新型钢结构立体车库在服役过程中因频繁搬运、存取车辆而产生的高周疲劳问题,先后建立了整体钢框架梁单元模型和梁柱节点实体单元模型,通过dload子程序模拟车辆沿导轨梁匀速运动的过程,运用等效结构应力法分析局部焊缝的疲劳特性,探究焊缝形式、焊缝根部间隙、坡口角度对结构疲劳寿命的影响,计算了双车位车厢和三车位车厢形式立体车库的疲劳损伤和使用年限。结果表明:钢结构立体车库的疲劳控制部位在底层靠近后轮处的梁柱节点受拉翼缘对接焊缝处,梁翼缘焊缝与焊缝孔相交区域属于应力高度集中区; 相较于单面焊,采用双面焊连接形式的结构应力更为均匀,疲劳性能更好; 焊缝的疲劳寿命随着根部间隙和坡口角度的增大而减小,且根部间隙的影响占主导因素; 三车位车厢形式的立体车库荷载工况更为复杂,工程建设时需重点关注其疲劳性能; 等效结构应力法仅通过主疲劳强度-疲劳寿命曲线评估疲劳,具有网格不敏感性,适用于大型重要结构的疲劳寿命评估。

Abstract:

To study the high-cycle fatigue issues arising from the frequent movement and access of vehicles in service for the new steel structure three-dimensional garage, the overall steel frame beam unit model and the beam-column node solid unit model were established successively. The dload subroutine was used to simulate the uniform motion of vehicles along the guide beam. The equivalent structural stress method was employed to analyze the fatigue characteristics of local welds. The effects of weld form, root gap and bevel angle on the structural fatigue life were investigated. The fatigue damage and service life of double-carriage and triple-carriage form three-dimensional garages were calculated. The results show that the fatigue control position of the steel structure three-dimensional garage is the beam-column node near the rear wheel on the bottom layer, where tensile flange butt welds are located. The intersection area of the beam flange weld and the weld hole belongs to a highly stress-concentrated area. The stress distribution is more uniform and the fatigue performance is better for the double-slanting groove full penetration weld connection compared to the single-slanting groove full penetration weld structure. The fatigue life of the weld decreases with the increase of the root gap and bevel angle, and the root gap has the dominant influence. The load conditions of the triple-carriage form of three-dimensional garage are more complex, and special attention needs to be paid to its fatigue performance during engineering construction. The equivalent structural stress method evaluates fatigue using only one main fatigue strength-fatigue life curve, which is insensitive to the grid and is suitable for fatigue life assessment of large and important structures.

参考文献/References:

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4 结 语
(1)车辆的搬运存取过程可用dload子程序模拟,钢结构立体车库的疲劳控制部位在底层靠近后轮梁柱节点A₁的受拉翼缘对接焊缝处。
(2)梁柱节点的梁翼缘焊缝与焊缝孔相交区域属于应力高度集中区,疲劳寿命远低于焊缝两端; 相较于单面焊,采用双面焊连接形式的结构应力更为均匀,疲劳性能更好; 受拉翼缘局部焊缝的疲劳寿命随着焊缝根部间隙和坡口角度的增大而减小,且根部间隙的影响占主导因素。
(3)三车位车厢相较于双车位车厢形式的立体车库荷载工况更为复杂,疲劳性能更差; 等效结构应力法考虑了荷载模式、应力集中与构件厚度的综合效应,适用于大型重要结构的疲劳寿命评估。

[1] SIEBER L, URBANEK R, B?R J. Crack-detection in old riveted steel bridge structures[J]. Procedia Structural Integrity, 2019, 17: 339-346.
[2]ZHANG H J, XU S H, NIE B, et al. Effect of corrosion on the fracture properties of steel plates[J]. Construction and Building Materials, 2019, 225: 1202-1213.
[3]刘希月,王元清,石永久,等.高强度钢框架梁柱节点低周疲劳断裂性能试验研究[J].建筑结构学报,2018,39(2):28-36.
LIU Xiyue, WANG Yuanqing, SHI Yongjiu, et al. Experimental study on low-cycle fatigue fracture behavior of high strength steel beam-to-column connection[J]. Journal of Building Structures, 2018, 39(2): 28-36.
[4]罗云蓉,王清远,付 磊,等.地震频率对Q235钢结构材料超低周疲劳行为的影响[J].实验力学,2018,33(5):743-750.
LUO Yunrong, WANG Qingyuan, FU Lei, et al. On the effect of seismic frequency on extremely low cycle fatigue behaviors of Q235 steel structure material[J]. Journal of Experimental Mechanics, 2018, 33(5): 743-750.
[5]方 钊,李爱群,李万润,等.高层钢框架支撑结构多尺度风致疲劳分析方法[J].东南大学学报(自然科学版),2017,47(1):137-141.
FANG Zhao, LI Aiqun, LI Wanrun, et al. Multi-scale wind-induced fatigue analysis method of high-rise steel braced frame structure[J]. Journal of Southeast University(Natural Science Edition), 2017, 47(1): 137-141.
[6]方 钊,李爱群,李万润,等.钢结构风致疲劳分析的多尺度有限元验证分析[J].浙江大学学报(工学版),2018,52(6):1131-1139.
FANG Zhao, LI Aiqun, LI Wanrun, et al. Verification on multi-scale finite element of wind-induced fatigue of steel structures[J]. Journal of Zhejiang University(Engineering Science), 2018, 52(6):1131-1139.
[7]杨振兴,贺拥军.带跨层支撑立体停车结构的静力及稳定性研究[J].公路,2019,64(6):177-182.
YANG Zhenxing, HE Yongjun. Study on static and stability of three-dimensional parking structure with cross-story support[J]. Highway, 2019, 64(6): 177-182.
[8]贺拥军,刘小华,周绪红.车辆横移过程中高层立体停车结构动力响应分析[J].建筑科学与工程学报,2015,32(5):32-38.
HE Yongjun, LIU Xiaohua, ZHOU Xuhong. Dynamic response analysis of high-rise tridimensional parking structure during horizontal transfer process of vehicle[J]. Journal of Architecture and Civil Engineering, 2015, 32(5): 32-38.
[9]贺拥军,周绪红,唐家云.四边形筒式钢构架立体停车结构的横隔设置研究[J].建筑科学与工程学报,2014,31(3):25-31.
HE Yongjun, ZHOU Xuhong, TANG Jiayun. Research on diaphragm arrangement of quadrangular tube-type steel frame tridimensional parking structure[J]. Journal of Architecture and Civil Engineering, 2014, 31(3): 25-31.
[10]贺拥军,姜玉婷,周绪红.基于多尺度模型的立体车库车辆撞击性能研究[J].湖南大学学报(自然科学版),2019,46(1):1-8.
HE Yongjun, JIANG Yuting, ZHOU Xuhong. Research on vehicle impact performance of tridimensional parking structure based on multi-scale model[J]. Journal of Hunan University(Natural Sciences), 2019, 46(1): 1-8.
[11]XIANG S Y, HE Y J, ZHOU X H, et al. Continuous twice-impact analysis of steel parking structure columns[J]. Journal of Constructional Steel Research, 2021, 187: 106989.
[12]XIANG S Y, HE Y J, ZHOU X H. Performance assessment of steel parking structure columns subjected to frontal collision based on reduced vehicular models[J]. Engineering Structures, 2022, 265: 114517.
[13]曹雪芹.立体车库智能梳齿搬运机器人关键技术研究[D].太原:太原科技大学,2020.
CAO Xueqin. Research on the key technology of intelligent card-tooth handling robot in stereo garage[D]. Taiyuan:Taiyuan University of Science and Technology, 2020.
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Code for design of parking garage building: JGJ 100—2015[S]. Beijing: China Architecture & Building Press, 2015.
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相似文献/References:

[1]贺拥军,杨承超,周绪红,等.立体车库的结构形式及应用与发展[J].建筑科学与工程学报,2009,26(04):30.
　HE Yong-jun,YANG Cheng-chao,ZHOU Xu-hong,et al.Structural Forms, Application and Development ofThree-dimensional Garages[J].Journal of Architecture and Civil Engineering,2009,26(04):30.

备注/Memo

备注/Memo:

收稿日期:2024-01-05
基金项目:国家自然科学基金项目(51890902,51878261,52478170)
通信作者:贺拥军(1970-),男,工学博士,教授,博士生导师,E-mail:13187057898@163.com。
Author resume: HE Yongjun(1970-), male, PhD, professor, E-mail: 13187057898@163.com.

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更新日期/Last Update: 2025-07-10