Steel-concrete composite beam bridge cantilever concrete formwork support structure and cantilever concrete construction method

The invention discloses a steel-concrete composite beam bridge cantilever concrete formwork support structure and a cantilever concrete construction method.The steel-concrete composite beam bridge cantilever concrete formwork support structure comprises a steel beam, a cantilever main beam is arranged above the steel beam, a counter-pull limiting device is arranged between one side of the cantilever main beam and the steel beam, and a horse stool is arranged between the middle of the cantilever main beam and the steel beam; a suspension channel steel is fixed on the other side of the cantilever main beam and comprises a vertical section and a horizontal section, a longitudinal beam is fixed on the horizontal section, a bottom die is fixed between the top of the longitudinal beam and the top surface of the steel beam, a side die is arranged at one end, far away from the steel beam, of the bottom die, and the side die and the vertical section are supported and fixed through the side die; according to the method