Post-pouring type deformation device and construction method thereof

The invention discloses a back casting type deforming device, which is characterized by the following: (1)comprising two I-beam and at least one indentation steel sheet; paralleling sternum of the two I-beam; aligning the 'I' face of the two; locating the indentation steel sheet between the two I-beam; fixing the two straight side on the sternum of the two I-beam; producing mold; assembling bar; fixing the I-beam and the indentation steel sheet; embedding the back casting type deforming device; paralleling the flange of the I-beam with the mold; fixing the I-beam and the assembling deformed device; (2)casting concrete without back casting area; (3)stewing for 7-14 days; casting the concrete of the back casting area; (4)wrecking the mold after 7-14 days.