Strengthening fixture for concrete threshold platform formwork

The utility model relates to building formwork fixtures, in particular to a strengthening fixture for a concrete threshold platform formwork. The strengthening fixture comprises a transverse rod (1) which is horizontal through supporting of two longitudinal rods (2), the transverse rod (1) is perpendicular to the longitudinal rods (2), and the transverse rod (1) and the longitudinal rods (2) are located in the same plane. An inclined strut (3) is connected between the outer side of each longitudinal rod (2) and the corresponding end of the transverse rod (1), the part, between the two longitudinal rods (2), of the transverse rod (1) is connected with inner supporting arms (4), the inner supporting arms (4) are perpendicular to the transverse rod (1), and the inner supporting arms (4) and the transverse rod (1) are located in the same plane. The strengthening fixture is reasonable in design and simple in structure, the quality of a threshold platform on which concrete is poured is guaranteed, and the construction progress is accelerated.