Construction method of multi-stress conversion raft for dense underpass of subway

The invention relates to a construction method of a multi-stress conversion raft for dense underpass of a subway, and relates to the technical field of basement construction. Comprising the following steps: S10, dividing a region with subway planning in a project construction region into conversion regions; s20, a basement bottom plate is poured in the project construction area, bearing platforms are arranged in the basement bottom plate in the conversion area at intervals, and the bearing platforms are connected through conversion beams; and S30, a steel inclined strut area is arranged at the edge position, connected with the non-construction area, of the conversion area, and the stability of supporting at the basement bottom plate is enhanced through the steel inclined strut area. The bearing platforms are arranged in the basement bottom plate above the subway tunnel at intervals, the bearing platforms are connected through the transfer beams, the strength of the basement bottom plate can be enhanced, stron