应力-强度干涉理论在对接焊缝中的应用Application of stress-strength interference theory in butt welds
韦尧兵;张如鹏;刘俭辉;王有良;
WEI Yao-bing;ZHANG Ru-peng;LIU Jian-hui;WANG You-liang;College of Mechano-Electronic Engineering,Lanzhou Univ. of Tech.;
摘要(Abstract)：
针对钢桥承载能力是否满足实际需求的问题,提出了一种将应力-强度干涉理论应用于钢桥对接焊缝数值分析的方法.对钢桥整体结构进行静力学分析,得到了钢桥主梁不同位置的应力状态;通过应力-强度干涉理论分析静载条件下对接焊缝的可靠性;以Q345钢对接焊缝为例,验证了提出方法的可行性,分析了含有残余应力的对接焊缝的可靠性.分析结果表明,在钢桥焊缝没有消除残余应力时,焊缝可靠性显著降低.
In order to solve the problem of whether the bearing capacity of steel bridge meets the actual demand, a method of applying stress-strength interference theory to the numerical analysis of butt weld of steel bridge is proposed in this paper. First of all, through static analysis of whole structure of the steel bridge, the stress states at different positions of main girder of the steel bridge can be obtained. Secondly, the reliability of butt weld under static loading is analyzed by the stress-strength interference theory. Finally, taking the butt welding of Q345 steel as an example, the feasibility of the proposed method is verified. The reliability of the butt weld with residual stress is predicted numerically as well.
关键词(KeyWords)：
对接焊缝;残余应力;数值分析;可靠性
butt weld;residual stress;numerical analysis;reliability
基金项目(Foundation): 国家自然科学基金青年基金(51605212);; 甘肃省自然科学基金(17JR5RA122)
作者(Author):
韦尧兵;张如鹏;刘俭辉;王有良;
WEI Yao-bing;ZHANG Ru-peng;LIU Jian-hui;WANG You-liang;College of Mechano-Electronic Engineering,Lanzhou Univ. of Tech.;
Email:
DOI:
参考文献(References)：
- [1] 王松根,李松辉.公路桥梁限载标准的可靠性分析方法 [J].工程力学,2010,27(10):162-166+181.
- [2] 吴光宇,杨升善,汪劲丰,等.大跨预应力混凝土桥梁极限承载力计算 [J].南昌大学学报(理科版),2013,37(2):198-204.
- [3] 张劲泉,冷艳玲,李万恒,等.中国公路桥梁承载能力评定规程的可靠性水准 [J].公路交通科技,2015,32(4):59-63+77.
- [4] SHAN C,YI Y.An experimental and numerical study on the behavior of a continuous orthotropic bridge deck with sandwich construction [J].Thin-Walled Structures,2017,111:138-144.
- [5] LEE H S,KIM J H.Wind pressure statistics and target reliability index for wind load-governed limit state of reliability-based bridge design codes [J].KSCE Journal of Civil Engineering,2019,23(5):2263-2271.
- [6] 冯艳辉.基于ANSYS的焊接梁残余应力分析 [D].西安:西安建筑科技大学,2008:12-13.
- [7] 张文钺.焊接冶金学 [M].北京:机械工业出版社,2004.
- [8] 侯彬.钢结构焊接残余应力及焊接变形控制技术分析 [J].中国金属通报,2019(2):139-140.
- [9] 葛明兰,鲁家晟.焊接残余应力对焊接结构的影响 [J].福建建筑,2010(7):50-52.
- [10] 高耀东,何雪.基于ANSYS单元生死技术的焊接模拟 [J].热加工工艺,2010,39(7):120-122+126.
- [11] 梁晓燕,罗金华,杜汉斌,等.基于ANSYS平台焊接模拟中不同焊接热源的比较 [J].电焊机,2003(3):29-32.
- [12] WANG T,LI N,ZHANG Y,et al.Influence of welding speed on microstructures and mechanical properties of vacuum electron beam welded TZM alloy joints [J].Vacuum,2018,149:29-35.
- [13] BALAKRISHNAN J,VASILEIOU A N,FRANCIS J A,et al.Residual stress distributions in arc,laser and electron-beam welds in 30 mm thick SA508 steel:A cross-process comparison [J].International Journal of Pressure Vessels and Piping,2018,162:59-70.
- [14] 李斌,苗青,胡志明,等.热应力法在钢结构焊接疲劳模拟中的应用 [J].中国建材科技,2020,29(1):92-93.
- [15] 张鄂,买买提明·艾尼.现代设计理论与方法 [M].北京:科学出版社,2007:109-111.
- [16] 崔秀林.机械可靠性设计应力与强度干涉理论的应用 [J].机械设计,1998(3):33-34+51.
- [17] 中交公路规划设计院有限公司.公路钢结构桥梁设计规范:JTG D64—2015 [S].北京:人民交通出版社,2015.
- [18] 中华人民共和国住房和城乡建设部.钢结构设计标准:GB 50017—2017 [S].北京:中国建筑工业出版社,2017.
- [19] 牟致忠.机械可靠性:理论·方法·应用 [M].北京:机构工业出版社,2011:85.
- [20] 王成刚,何凡.异种钢焊接接头的焊接残余应力及其松弛行为 [J].焊接技术,2016,45(4):66-69+6.