以齐齐哈尔至富拉尔基公路嫩江特大桥为工程依据,通过桥梁博士计算悬臂施工过程中箱梁的挠度和受力.施工过程中,高程监控采用的灰色GM(1,1)模型进行预测下一块段挠度,结合理论挠度,提出合理的施工预拱度,从而保证了各孔合拢的精度,取得了良好的效果.%Taking Nenjiang river super-large bridge from Qiqihaer to Fulaerji highway as engineering basis, deflection and stress in the process of box beams cantilever construction was calculated through Dr. Bridge. During the construction process,the next segment deflection was forecasted using grey GM(1, 1) model to conduct elevation control. In this paper reasonable construction preliminary camber was put forward combining theoretical deflection which ensured the assembly precision of each hole as well as obtained a good effect
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