Construction method of prefabricated cast-in-place combined type river landscape trestle

The invention relates to the technical field of trestle construction, and provides a prefabricated cast-in-place combined type river landscape trestle construction method which comprises the following steps: step 1, inserting a pair of bearing piles into soil on the bottom wall of a river; secondly, two inclined struts are welded between the pair of bearing piles, upper parallel bracings are welded between the pair of bearing piles, and a bottom beam is installed on the top walls of the pair of bearing piles; thirdly, the first step and the second step are repeated, and multiple pairs of bearing piles are installed in the river channel; fourthly, the bailey beams are installed on the top walls of the two adjacent pairs of bearing piles; fifthly, two or more distribution beams are installed on the top wall of the bailey beam, and two connecting rods are fixedly connected to the top wall of each distribution beam; and 6, the bridge deck slab is hoisted to the top wall of the distribution beam, the bridge deck s