Steel-alkali-activated UHPC composite structure, prefabricated alkali-activated UHPC board and connecting piece

The invention discloses a steel-alkali activated UHPC composite structure, a prefabricated alkali activated UHPC board and a connecting piece. The steel-alkali activated UHPC composite structure comprises a steel beam and a prefabricated alkali activated UHPC plate covering the steel beam, and the steel beam and the prefabricated alkali activated UHPC plate are connected through a shearing force connecting piece pre-buried in the concrete plate; and the prefabricated alkali-activated UHPC board is made of alkali-activated ultra-high performance concrete. The structure is reasonable in stress, high in strength, large in rigidity and high in construction operability, each component of the component is further detachably recycled, an alkali-activated material is used for replacing a gel material of Portland cement, the industrial byproduct slag can be effectively utilized, carbon emission and environmental pollution in the whole production and construction process can be greatly reduced, and the concept of green