金属加工（热加工）Issue(4)：103-110,8.
大跨度桥梁钢-混组合桥塔高效焊接与拼装技术
Efficient welding and assembly technology for steel-concrete composite bridge towers of long-span bridges
摘要
Abstract
Aiming at the industry problems such as uncontrolled welding deformation and insufficient segment matching accuracy of the steel shell of steel-concrete composite bridge towers in long-span bridges,which are caused by thin-wall characteristics,complex surface modeling and dense stiffeners,an integrated welding machine assembly technology of"phased precise control+multi-process collaborative optimization"is innovatively proposed.The technology covers four core links:refined manufacturing of wall plate units,efficient matching and assembly of segment blocks,three-dimensional assembly of integral segments and precise connection at the bridge site.Through key technologies such as differentiated processing of bolt holes,structure-adaptive welding processes,intelligent assembly positioning systems and active control of welding deformation,a full-process quality assurance system is constructed.Application results of major projects such as the Anlu Yellow River Bridge and the Shiziyang Bridge show that the flatness error of the steel shell wall plate unit is ≤2mm,verticality of segmental assembly≤ 1.5mm/m,and the one-time qualification rate of welds reaches more than 99.7％,which significantly improves the manufacturing efficiency and structural reliability of composite bridge towers,and provides a replicable technical paradigm for similar projects.关键词
大跨度桥梁/钢-混组合桥塔/高效焊接/精度控制/变形控制Key words
long-span bridges/steel-concrete composite bridge tower/efficient welding/precision control/deformation control引用本文复制引用
白玉明,高建忠,宋红飞,李小松..大跨度桥梁钢-混组合桥塔高效焊接与拼装技术[J].金属加工（热加工）,2026,(4):103-110,8.基金项目
河北省中央引导地方科技发展资金项目(254Z1004G). （254Z1004G）
