Support erecting method

The invention provides a support erecting method, and relates to the technical field of bridge construction. The support erecting method comprises the steps that inserting and driving information of a support erecting area is obtained according to exploration data, and steel pipe piles at the corresponding positions are transversely cut into first piles and second piles one by one according to the inserting and driving information; the first pile is inserted into the mounting position corresponding to the steel pipe pile, and a first support comprising a second pile is erected; and the first support is hoisted to the preset position in butt joint with the first pile, and the first pile and the second pile are fixed through the fixing structure to complete erecting of the target support. According to the embodiment of the invention, the bracket can be split into the first pile needing to be inserted and driven and the first bracket capable of being mounted on land, so that the erection of a bracket structure p