Construction method for rectangular and variable section hollow pier of bridge

The invention discloses a construction method for a rectangular and variable section hollow pier of a bridge, and relates to the field of bridge construction. The main aim is to solve the problems that an existing construction method is long in construction period, slow in formwork transfer and the like. Pier body steel bars are bound, a pier body solid segment formwork is installed, and pier bodyconcrete is cast; after the concrete is cast, the solid segment formwork is not detached and connected with long stiff skeletons, first and second segment inner and outer formworks are installed anderected on the top of the solid segment formwork, and first and second segment pier body concrete is cast; after a second pier body is constructed, pier body steel bars are bound, the solid segment formwork and the first segment formwork are first disassembled, then the second segment formwork is not disassembled temporarily, third and fourth segment formworks are sequentially installed and erected on the top of the second