Wallboard lattice type steel cover box and method for constructing underwater bearing platform steel cover box

The invention discloses a wallboard lattice type steel cover box and a method for constructing an underwater bearing platform steel cover box, and belongs to the technical field of traffic engineering. The wallboard lattice type steel cover box comprises a face plate and a bottom plate. The face plate and the bottom plate are connected to form a box-shaped structure. A plurality of main beams are transversely arranged on the face plate. A plurality of auxiliary beams are vertically arranged on the face plate. A plurality of inner supports are arranged inside the box-shaped structure. The two ends of the inner supports are correspondingly connected with the main beams. The method for constructing the underwater bearing platform steel cover box through the wallboard lattice type steel cover box includes the following steps of firstly, arranging a splicing platform at the position of a bearing platform pile; secondly, splicing the underwater bearing platform steel cover body according to the requirements, and installing a downward placing device; thirdly, starting the downward placing device, and starting to downward place the underwater bearing platform steel cover body to the design position; fourthly, constructing follow-up bearing platform construction; fifthly, detaching the underwater bearing platform steel cover box.