High-strength composite material pavement slab and integrated vacuum brazing forming method thereof

The invention discloses a high-strength composite material pavement slab and an integrated vacuum brazing forming method thereof.The pavement slab is formed by splicing a plurality of pavement unit plates, each pavement unit plate comprises an upper skin, a lower skin and a honeycomb core material located between the upper skin and the lower skin, the upper skin and the lower skin are buckled to form a cavity, and the honeycomb core material is arranged between the upper skin and the lower skin. The honeycomb core material is arranged in the cavity, the upper skin and the lower skin are of a multi-layer aluminum alloy composite structure, and low-melting-point alloy layers are arranged on the inner side face of the upper skin, the inner side face of the lower skin and the two side faces of the honeycomb core material respectively. The low-melting-point alloy layers on the inner side faces of the upper skin and the lower skin and the low-melting-point alloy layers on the two side faces of the honeycomb core ma