大跨度钢构天桥节点焊接残余应力控制与性能提升研究

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中图分类号：TG498.2 文献标志码：B文章编号：1001-5922（2026）03-0681-03

Research on welding residual stress control and performance improvement of large-span steel structure overpass joints

LIU Shengping，TANG Jun，LIANG Chao （China Nuclear Industry No.24 Construction Co.，Ltd.，Langfang O652O0，Hebei China）

Abstract：Taking the Urban-Rural Comprehensive Improvement Project （EPC）of Guangxin District—Jiyang Road Improvement and Reconstruction Project asthe research object，this paper introduces its project overview，including structural type，size，materials and soon.Byusing finite element software and combining with relevant codes，the stress，mode，deflection，overallstability and local component checking calculation of the joint welding structure were caried out.In addition，the construction of joint fatigue load spectrum，damage assessment and performance improvement measures were studied.The results show that the performance of the overpass structure and its joints meets the requirements of relevant codes.

Key words：steel box girder pedestrian overpass;joint welding;structural analysis ;fatigue performance

随着城市交通流量持续增长，广信区吉阳路拥堵问题日益凸显。（剩余5057字）