Prestressed aluminum alloy combined component

The utility model relates to the technical field of aluminum alloy components, and provides a prestress aluminum alloy combined component which comprises an H-shaped section rod piece, two prestress pull rods and four end plates. One side of each end plate is a plane and is provided with a special-shaped notch which is clamped with the H-shaped section rod piece, and the other side of each end plate is an arc surface which is connected with the node; the prestress pull rods penetrate through the H-shaped section rod pieces and the end plates and are connected with the joints through threads atthe two ends of the prestress pull rods and bolts. According to the utility model, the prestress pull rod and the H-shaped section member are combined; the stable bearing capacity of the component under the action of axial pressure and bending load is improved; the defect that the stability of the rod piece is poor due to low elasticity modulus of the aluminum alloy can be overcome; compared withan H-shaped section rod p