According to the local situation and the structure characteristics of this project,authors made a feasible construction plan,in which the truss is segmented assembly and hoisted by spin-pulling method.

In this paper mainly analyzes and interpretes the construction method,process,procedure of segmental assembling of traveling trestle bridge fabrication machines.

This thesis introduces the arc splines fixing with sectionally smooth joining to create the computing modeling for disk cam with wedge flatface follower,analyze the fixing error of the model and solve the problem of it’s manufacturing with the numeric control continuous contouring grinder.

Some construction technics of concrete beam bridges in segment installation have been discussed in this paper,combined with the construction of prestressed boxing bridges and the handling of the bridging machines in sifeng cloverleaf junction.