Aluminum alloy metro vehicle body section bar capable of matching and combining

An aluminum alloy metro vehicle body section bar capable of matching and combining, comprising a roof section bar, an upper edge beam section bar, a side wall section bar, a lower edge beam section bar and a floor section bar, the adjacent section bars being fixedly connected to form a vehicle body, wherein

• the roof section bar comprises roof edge section bars of two widths to respectively adapt to an A-type vehicle and a B-type vehicle;
• the upper edge beam section bar comprises an upper edge beam of a drum-shaped vehicle and an upper edge beam of a trapezoidal vehicle to respectively adapt to the drum-shaped vehicle and the trapezoidal vehicle;
• the side wall section bar comprises a side wall middle section bar of the drum-shaped vehicle and a side wall middle section bar of the trapezoidal vehicle to respectively adapt to the drum-shaped vehicle and the trapezoidal vehicle;
• the lower edge beam section bar comprises a lower edge beam of the drum-shaped vehicle and a lower edge beam of the trapezoidal vehicle to respectively adapt to the drum-shaped vehicle and the trapezoidal vehicle;
• and
• the floor section bar comprises underframe edge section bars of two widths to respectively adapt to the A-type vehicle and the B-type vehicle.