The present invention provides an aircraft floor of an aircraft consisting of a number of base plates and a number of longitudinal supports and provides an aircraft with a floor of this type. The aircraft floor has transverse joints for partitioning the floor into a plurality of segments transversely to a longitudinal axis of the aircraft, the respective segment consisting of a number of longitudinal support elements, partitioned by the transverse joints, of the longitudinal supports and of a number of base plate elements partitioned by the transverse joints, of the base plates and the segments being coupled together such that they have exclusively a translatory degree of freedom with respect to one another in the direction of the longitudinal axis of the aircraft.