Multi-dimensional multifunctional restraining device, system and method for suspension bridge

The invention discloses a suspension bridge multi-dimensional multifunctional restraining device, system and method.The suspension bridge multi-dimensional multifunctional restraining device comprises a first elastic energy dissipation piece and a second elastic energy dissipation piece, and the first elastic energy dissipation piece and the second elastic energy dissipation piece are both located between a main tower and a main beam; the first elastic energy dissipation piece is provided with two contact faces which are oppositely arranged, the sizes of the two contact faces of the first elastic energy dissipation piece are different, the second elastic energy dissipation piece is provided with two abutting faces which are oppositely arranged, and the preset shearing force of the second elastic energy dissipation piece is larger than that of the first elastic energy dissipation piece. And the two abutting surfaces are consistent in size and are larger than the contact surface. The multi-dimensional multifunc