三江县宜阳大桥主桥钢箱梁U肋内焊施工技术分析  

Construction Technology Analysis of U Rib Welding of Main Bridge Steel Box Girder of Yiyang Bridge in Sanjiang County

作　　者：刘金捧 Liu Jinpeng(Beijing Tieyan Construction Supervision Co.Ltd.,Beijing 102600)

机构地区：[1]北京铁研建设监理有限责任公司,北京102600

出　　处：《江西建材》2023年第4期238-239,共2页Jiangxi Building Materials

摘　　要：文中以柳州三江县宜阳大桥为研究对象,分析了桥梁正交异性板结构U肋内部空间存在的焊接缺陷问题,利用龙门焊接平台驱动连杆,让驱动内焊机器人能自由进入U肋内部,对两侧内焊角进行焊接工作,将原本的单面角焊缝优化成双面角焊缝形式,从而增加焊接面积,解决应力过于集中问题,加强力学性能和抗疲劳能力,将焊接变形工作控制在合理范围内,保证桥梁质量能够达到预期标准。Taking Yiyang Bridge in Sanjiang County of Liuzhou as the research object,the paper analyzes the welding defects existing in the internal space of U rib of the bridge's orthogonal profiled-plate structure.The gantry welding platform is used to drive the connecting rod,so that the driving internal welding robot can freely enter the U rib and smoothly weld the internal welding angles on both sides.The original single fillet weld is optimized into the form of double-sided fillet weld.In this way,the welding area can be increased,stress concentration can be solved,mechanical properties and fatigue resistance can be strengthened,welding deformation can be controlled within a reasonable range,and the quality of the bridge can meet the expected standards.

关 键 词：宜阳大桥 钢箱梁正交异性板 U肋内焊技术 

分 类 号：U445[建筑科学—桥梁与隧道工程]