不同工艺参数下复合钢管柱焊接残余应力分析  

Residual stress analysis of composite steel pipe column welding under different process parameters

作　　者：张重阳 ZHANG Chongyang(China Railway 18th Bureau Group Co.,Ltd.,Tianjin 300000,China)

机构地区：[1]中铁十八局集团有限公司,天津300000

出　　处：《焊接技术》2025年第2期32-35,I00001-I00002,共4页Welding Technology

摘　　要：为提升地下钢管柱的耐腐蚀性,提出了一种Q345+TA10复合钢管柱,并对不同过渡层厚度、焊缝层数、焊接速度等工艺参数下的焊接残余应力进行试验和模拟分析。结果表明:复合钢管柱最大轴向应力均出现在热影响区内,最大径向应力均出现在中间焊缝层,最大周向残余应力均出现在焊缝两侧约25 mm处;增加过渡层厚度和焊缝层数,提升每一层的焊接速度,均可以明显降低复合钢管柱的焊接残余应力,对于复合钢管柱性能有极大帮助;实际工程中,为保证较高的焊接施工效率和施工质量,建议通过调整Cu过渡层厚度及适当提升焊接速度来提升复合钢管栓的焊接性能。In order to improve the corrosion resistance of underground steel pipe columns,a Q345+TA10 composite steel pipe column was proposed,and welding residual stress was tested and simulated under different process parameters such as transition layer thickness,number of weld layers and welding speed.The results showed that the maximum axial stress of the composite steel pipe column occured in the heat-affected zone,the maximum radial stress occured in the middle weld layer,and the maximum circumferential residual stress occured about 25 mm on both sides of the weld.Increasing the thickness of the transition layer and the number of weld layers,improving the welding speed of eachlayer,could significantly reduce the welding residual stress of composite steel pipe columns,which was greatly helpful for the performance of composite steel pipe columns.In practical engineering,to ensure high welding construction efficiency and quality,it was recommended to improve the welding performance of composite pipes by adjusting the thickness of Cu transition layer and appropriately increasing the welding speed.

关 键 词：复合钢管柱 过渡层厚度 焊缝层数 焊接速度 残余应力 

分 类 号：TG441.7[金属学及工艺—焊接] U231.4[交通运输工程—道路与铁道工程]