摘要
为研究钢箱梁桥现场拼装时U肋加劲板对接部位的焊接残余应力分布规律,设计并制作了钢箱梁桥现场拼装用的U肋加劲板对接接头试件,采用盲孔法测量了试件表面的焊接残余应力,并利用ABAQUS有限元软件对试件焊接过程进行数值模拟计算,获取了试件模型的焊接残余应力分布规律,并将数值模拟结果与试验结果进行对比分析。结果表明,纵向残余应力中,拉应力主要集中分布在对接焊缝周围及U肋角焊缝附近,而压应力则主要分布于靠近U肋外侧的母材部分以及U肋角焊缝的端部;横向残余应力中,拉应力主要集中分布在U肋角焊缝周围,而压应力主要分布于对接焊缝的端部。
In order to study the welding residual stresses of the butt joint of the U-rib stiffened plate during the on-site assembly of the steel box girder bridge,this paper were designed and fabricated the butt joint specimen of the U-rib stiffened plate during the on-site assembly of the steel box girder bridge.The blind-hole method was used to measure the welding residual stress on the surface of the specimen,and the ABAQUS finite element software was used to simulate the welding of the specimen.The distribution law of the welding residual stress of the specimen model was obtained,and the numerical simulation results were compared with the experimental results.The results show that the longitudinal residual stress are mainly the tensile stresses distributed around the butt weld and near the U-rib fillet weld,and the compressive stresses mainly distributed in the base metal near the outer side of the U-rib and the end of the U-rib fillet weld.The transverse residual stresses are mainly the tensile stress distributed around the U-rib fillet weld,and the compressive stresses mainly distributed at the end of the butt weld.
作者
王玉建
张纪刚
古驰
于风波
WANG Yujian;ZHANG Jigang;GU Chi;YU Fengbo(School of Civil Engineering,Qingdao University of Technology,Qingdao,Shandong 266520,China;Qingdao First Municipal Engineering Co.,Ltd.,Qingdao,Shandong,266034,China;Qingdao Yihe Steel Structure Group Co.,Ltd.,Qingdao,Shandong 266216,China)
出处
《河北工程大学学报(自然科学版)》
2025年第4期41-48,共8页
Journal of Hebei University of Engineering(Natural Science Edition)
基金
国家自然科学基金资助项目(52378304)。
关键词
U肋加劲板
对接接头
盲孔法
数值模拟
U-rib stiffened plate
butt joint
blind-hole method
numerical simulation
