LAUNCHING GIRDER TRANSPORTATION METHOD

Disclosed in the present invention is a launching girder transportation method, comprising: step 1, hoisting and assembling a launching girder main beam assembly, a front support leg assembly, a middle support leg assembly, a rear support leg assembly, a temporary support leg assembly, a longitudinal truss trolley assembly and a lifting trolley assembly, so as to successively install on a main beam a temporary support leg, a front support leg, a middle support leg and a rear support leg; step 2, installing at the rear end of the main beam the front support leg, the middle support leg and the rear support leg, supporting same in place, and installing a pair of fixing cross beams; step 3, lifting the main beam, so as to support the temporary support leg in place, hoisting lifting trolleys and retracting the middle supporting leg; step 4, lowering the main beam, and respectively connecting a main transportation vehicle and an auxiliary transportation vehicle to the pair of fixing cross beams by means of pin shaf