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介绍了赣州大桥40m薄壁箱梁整体预制情况，重点是对预制过程中梁体产生裂纹的原因分析、所采用的对策及防裂效果。
The whole prefabrication condition of 40m thin-walled box girder of Ganzhou Bridge is introduced, and the key point is to analyze the cause of the cracks in the beam body during prefabrication, the countermeasures adopted and the anti-cracking effect.