3　Overall ConstructionTechnical Flow Process

3.1　Overall Construction Program

3.1.1　Artificial formworking method shall be applied for the construction of supporting layer on subgrade，the supporting layer or base plate in tunnel and the base plated on bridge.

3.1.2　The concrete track bed slab construction shall mainly adopt “mechanical vibration and embedded method”（“mechanical method”in short），and “steel correcting transverse girder for rail erecting method”（“rail arrangement method”in short）can be adopted in some sections where the mechanical method can not be applied.