Toprefabricate box-girder is important in concrete cable-stayed bridge construction, it affects directly the main bridge construction of assembly progress and packing accuracy.
箱梁的预制是钢筋混凝土斜拉桥施工中的重要环节，它直接影响到主桥施工的吊装进度和拼装精度。
2
The scene each kind of inspection well lap and the blind ditch lap in prefabricate in the field toprefabricate, truck transportation, crane loading and unloading, artificial auxiliary.
现场各类检查井盖板及暗沟盖板在预制场内预制，载重汽车运输、吊车装卸，人工辅助。
3
To investigate a new type of low stress precision cropping system, it is necessary to obtain the feasibility that the heat stress was used toprefabricate the ideal crack of V-shaped notch tip.