Container underframe structure

The utility model discloses a container underframe structure, including threshold, preceding floorbar, corner fittings, two foundation curb girders, a plurality of cross member and a pair of fork pocket, threshold, preceding floorbar and two foundation curb girders connect into a rectangular frame through the corner fittings, and a plurality of cross members and a pair of fork pocket are connected between two foundation curb girders, and its special character is: the cross member varies for channel -section steel shape die mould spare and upper and lower hem width, and the hem width is greater than time hem width it on, the threshold is even as an organic whole with a cross member that is close to this threshold. The beneficial effects are that: can increase the area of contact of cross member and container timber apron, make timber apron non -deformable damage, improve the bearing capacity and self intensity of timber apron, can increase the intensity and the shock -resistant power of threshold, make thresho