The invention provides a reinforcing structure and a reinforcing method of an embedded grid
composite plate-steel hoop for a pressed component. The strengthening structure comprises an original compression component, an end steel sleeve, an anchoring
steel bar, a positioning
steel bar, a steel bottom plate and a stiffening rib set. Transverse strips of the
fiber reinforced
composite material grids are arranged around the component, and the two ends of the transverse strips are tensioned, pre-tightened and fixed at the penetrating holes of the anchoring steel bars; and the
fiber cement-based material integrally wraps the components and fills gaps, so that an integrated reinforced structure is formed. The strengthening method comprises the steps of component treatment, steel sleeve installation, grid tensioning and pre-tightening, joint
welding, overall pouring and the like. The reliable joint framework is formed by the end steel sleeves and the rigid bottom plate, and the problem of connection applicability of a reinforcing layer, an original structure and an external component is solved; and meanwhile, active constraint is achieved through tensioning and pre-tightening, so that a reinforcing material efficiently works from the initial stress stage, the
bearing capacity,
ductility and energy dissipation capacity of an original component are remarkably improved, construction is convenient and fast, and interference to the original structure is small.