构造参数对顶板与U肋连接焊缝应力的影响
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摘要
针对钢桥面板顶板与U肋连接焊缝在不同构造参数下的应力变化,分析该细节的受力机理,对比两种不同U肋构造的应力分布特征;建立局部足尺模型,通过提取顶板焊缝的应力梯度,分析应力的变化情况,得出顶板与U肋连接焊缝在不同构造参数下的应力分布规律。结果表明,截断U肋与完整U肋均可如实反映顶板与U肋连接焊缝的受力情况;顶板厚度与熔透率越大,顶板与U肋连接焊缝的总体应力越小,即改善受力性能的效果越好; U肋厚度对顶板与U肋连接焊缝的应力影响不大。
The stress change of deck-U rib joint weld in the steel bridge was studied considering different structural parameters. Meanwhile,the stress mechanism was also analyzed to compare the stress distributions of two different U rib structures. The stress gradient of the deck weld was extracted to investigate the law of stress change. After that,the fatigue stress distribution of deck-U rib joint weld under different structural parameters was analyzed. The result shows that cut U rib and full U rib can both reflect the mechanical performance of deck-U rib joint weld faithfully. The greater the deck thickness and penetration rate are,the smaller the stress of deck-U rib joint weld is.Therefore,increasing the deck thickness can improve the mechanical performance. Besides,the U rib thickness and weld leg size exert little influence on the stress of deck-U rib joint weld.
The stress change of deck-U rib joint weld in the steel bridge was studied considering different structural parameters. Meanwhile,the stress mechanism was also analyzed to compare the stress distributions of two different U rib structures. The stress gradient of the deck weld was extracted to investigate the law of stress change. After that,the fatigue stress distribution of deck-U rib joint weld under different structural parameters was analyzed. The result shows that cut U rib and full U rib can both reflect the mechanical performance of deck-U rib joint weld faithfully. The greater the deck thickness and penetration rate are,the smaller the stress of deck-U rib joint weld is.Therefore,increasing the deck thickness can improve the mechanical performance. Besides,the U rib thickness and weld leg size exert little influence on the stress of deck-U rib joint weld.
引文
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[11]KAINUMA S,YANG M,JEONG Y,et al. Experiment on fatigue behavior of rib-to-deck weld root in orthotropic steel decks[J].Journal of Constructional Steel Research,2016,119:113-122.
[12]田洋,李运生,张德莹,等.正交异性板U肋与桥面板焊缝连接的静力及疲劳试验研究[J].铁道科学与工程学报,2011,8(2):34-39.(TIAN Yang,LI Yunsheng,ZHANG Deying,et al. Fatigue test research on welded rib-to-deck connections in steel orthotropic bridge deck[J]. Advanced Materials Research,2011,8(2):34-39.(in Chinese))
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[14]朱爱珠,李牧,田杨,等.设内隔板正交异性钢桥面板足尺模型疲劳试验[J].钢结构,2017,32(1):45-50.(ZHU Aizhu,LI Mu,TIAN Yang,et al. Fatigue test on full-scale orthotropic steel bridge deck with inner diaphragm[J]. Steel Construction,2017,32(1):45-50.(in Chinese))
[15]YA S,YAMADA K. Fatigue durability evaluation of trough to deck plate welded joint of orthotropic steel deck[J]. Structural Engineering/earthquake Engineering,2008,64(3):603-616.
[16]FU Zhongqiu,JI Bohai,ZHANG Chengyi,et al. Fatigue performance of roof and U-rib weld of orthotropic steel bridge deck with different penetration rates[J]. Journal of Bridge Engineering,2017,22(6):04017016.
[17]张呈奕,傅中秋,吉伯海,等.钢材强度对钢桥面板焊缝疲劳强度的影响[J].工业建筑,2017,47(5):12-16.(ZHANG Chengyi,FU Zhongqiu,JI Bohai,et al. The influence of steel strength on fatigue strength of orthotropic steel bridge deck welds[J]. Industrial Construction,2017,47(5):12-16.(in Chinese))
[18]谢曙辉,吉伯海,姚悦,等.钢桥面板顶板角焊缝疲劳裂纹钻孔孔位分析[J].广西大学学报(自然科学版),2017,42(1):290-298.(XIE Shuhui,JI Bohai,YAO Yue,et al. Analysis on location of retrofit hole for fatigue crack near fillet weld on steel bridge deck[J]. Journal of Guangxi University(Natural Science Edition),2017,42(1):290-298.(in Chinese))
[19] International Institute of Welding. Stress determination for fatigue analysis welded components[S]. Switzerland:Springer International Publishing,2016.
[2]袁周致远,吉伯海,杨沐野,等.正交异性钢桥面板顶板竖向加劲肋焊接接头疲劳性能试验研究[J].土木工程学报,2016,49(2):69-76.(YUAN Zhouzhiyuan,JI Bohai,YANG Muye,et al. Study on fatigue performance of welded joints for outof-plane gusset in orthotropic steel bridge decks[J]. China Civil Engineering Journal,2016,49(2):69-76.(in Chinese))
[3]吴冲,刘海燕,张志宏,等.桥面铺装温度对正交异性钢桥面板疲劳的影响[J].同济大学学报(自然科学版),2013,41(8):1213-1218.(WU Chong,LIU Haiyan,Zh ANG Zhihong,et al. Influence of pavements temperature on fatigue life of orthotropic deck of steel bridge[J]. Journal of Tongji University(Natural Sciences),2013,41(8):1213-1218.(in Chinese))
[4]陶晓燕.正交异性钢桥面板节段模型疲劳性能试验研究[J].中国铁道科学,2013,34(4):22-26.(TAO Xiaoyan.Experimental study on the fatigue performance of the section model of orthotropic steel bridge deck[J]. China Railway Science,2013,34(4):22-26.(in Chinese))
[5]周晖,施刚,王元清,等.钢桥疲劳评估研究进展[J].钢结构,2013,28(4):1-6,19.(ZHOU Hui,SHI Gang,WANG Yuanqing,et al. Research progresses in fatigue assessment of steel bridges[J]. Steel Construction,2013,28(4):1-6,19.(in Chinese))
[6]贾恩实,马润平,张强.欧美规范中公路桥梁正交异性钢桥面板抗疲劳设计对比分析[J].世界桥梁,2013,41(2):31-34.(JIA Enshi,MA Runping,ZHANG Qiang. Contrastive analysis of anti-fatigue design of orthotropic steel bridge deck for highway bridges in aashto and eurocode 3[J]. World Bridges,2013,41(2):31-34.(in Chinese))
[7]刘益铭,张清华,张鹏,等.港珠澳大桥正交异性钢桥面板U肋对接焊缝疲劳寿命研究[J].中国公路学报,2016,29(12):25-33.(LIU Yiming,ZHANG Qinghua,ZHANG Peng,et al. Study on fatigue life of u-rib butt weld in orthotropic steel bridge deck of hong kong-zhuhai-macao bridge[J]. China Journal of Highway&Transport,2016,29(12):25-33.(in Chinese))
[8]吉伯海,陈祥,刘荣,等.钢桥面板顶板与U肋接头疲劳效应分析[J].建筑钢结构进展,2014,16(6):56-62.(JI Bohai,CHEN Xiang,LIU Rong,et al. A numerical study on the fatigue effect of trough-deck plate weld joint to steel bridge deck system[J]. Progress in Steel Building Structures,2014,16(6):56-62.(in Chinese))
[9]付坤,冯鹏程,陈毅明.宽幅钢箱梁横隔板与U肋过焊孔构造研究[J].桥梁建设,2017,47(3):65-70.(FU Kun,FENG Pengchen,CHEN Yiming. Study of cutouts at joints of diaphragms and u rib of wide steel box girder[J]. Bridge Construction,2017,47(3):65-70.(in Chinese))
[10]YA S,YAMADA K,ISHIKAWA T. Fatigue evaluation of rib-to-deck welded joints of orthotropic steel bridge deck[J]. Journal of Bridge Engineering,2011,18(5):492-499.
[11]KAINUMA S,YANG M,JEONG Y,et al. Experiment on fatigue behavior of rib-to-deck weld root in orthotropic steel decks[J].Journal of Constructional Steel Research,2016,119:113-122.
[12]田洋,李运生,张德莹,等.正交异性板U肋与桥面板焊缝连接的静力及疲劳试验研究[J].铁道科学与工程学报,2011,8(2):34-39.(TIAN Yang,LI Yunsheng,ZHANG Deying,et al. Fatigue test research on welded rib-to-deck connections in steel orthotropic bridge deck[J]. Advanced Materials Research,2011,8(2):34-39.(in Chinese))
[13]吕彭民,李大涛.正交异性钢桥面板U肋与桥面板焊缝连接处疲劳试验研究[J].郑州大学学报(工学版),2013,34(2):89-93.(LUY Pengmin,LI Datao. Fatigue test research of rib-to-deck welded joints of orthotropic steel bridge deck[J].Journal of Zhengzhou University(Engineering Science),2013,34(2):89-93.(in Chinese))
[14]朱爱珠,李牧,田杨,等.设内隔板正交异性钢桥面板足尺模型疲劳试验[J].钢结构,2017,32(1):45-50.(ZHU Aizhu,LI Mu,TIAN Yang,et al. Fatigue test on full-scale orthotropic steel bridge deck with inner diaphragm[J]. Steel Construction,2017,32(1):45-50.(in Chinese))
[15]YA S,YAMADA K. Fatigue durability evaluation of trough to deck plate welded joint of orthotropic steel deck[J]. Structural Engineering/earthquake Engineering,2008,64(3):603-616.
[16]FU Zhongqiu,JI Bohai,ZHANG Chengyi,et al. Fatigue performance of roof and U-rib weld of orthotropic steel bridge deck with different penetration rates[J]. Journal of Bridge Engineering,2017,22(6):04017016.
[17]张呈奕,傅中秋,吉伯海,等.钢材强度对钢桥面板焊缝疲劳强度的影响[J].工业建筑,2017,47(5):12-16.(ZHANG Chengyi,FU Zhongqiu,JI Bohai,et al. The influence of steel strength on fatigue strength of orthotropic steel bridge deck welds[J]. Industrial Construction,2017,47(5):12-16.(in Chinese))
[18]谢曙辉,吉伯海,姚悦,等.钢桥面板顶板角焊缝疲劳裂纹钻孔孔位分析[J].广西大学学报(自然科学版),2017,42(1):290-298.(XIE Shuhui,JI Bohai,YAO Yue,et al. Analysis on location of retrofit hole for fatigue crack near fillet weld on steel bridge deck[J]. Journal of Guangxi University(Natural Science Edition),2017,42(1):290-298.(in Chinese))
[19] International Institute of Welding. Stress determination for fatigue analysis welded components[S]. Switzerland:Springer International Publishing,2016.