论述了对泰州长江公路大桥超大型薄壁钢壳沉井加工工艺和焊接工艺的合理选择，针对钢壳沉井外形尺寸大、壁薄的特点，采用了合理的焊接、拼装方法，使单元件加工、各单元件组装和整体拼装过程的精度，以及对薄壁钢板的焊接和防变形的精度得到有效控制，从而保证加工质量。

It was discussed the proper choice for processing and welding technology of large thin-wall steel caisson in Taizhou Bridge. According to the caisson's characteristics of large size and thin wall, reasonable welding and assembly methods were adopted to effectively control precision in the processes of fabricating and assembling pieces of each unit and the whole caisson, and the welding and anti-deformation precision of thin-wall steel sheet can be controlled too. Thus the processing quality was guaranteed.

彭武（1977－），男，湖北襄樊市人，工程师，研究方向为机械设计制造及自动化