The paper introduces the control of camber in the construction of non prestressed continuous box beam, appearance and development of cracks of bottom plate of box beam.

• 介绍非预应力连续箱梁施工中预拱度的控制,以及箱梁底板裂缝的出现和开展,并分析其成因,从而确保箱梁施工质量满足设计和施工规范要求。