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通过对三峡工程永久船闸大型临时公路桥两根大跨度全焊接钢箱形梁制作的实践，总结了大跨度全焊接钢箱形梁的焊接变形控制方法，为大跨度全焊接钢箱形梁的制作提供了借鉴。
Through the practice of the fabrication of two large-span fully welded steel box girders for the permanent freeway lock of the Three Gorges Project, the control methods of welding deformation of long-span fully welded steel box girders are summarized. Production provided a reference.