Structural assembly for an aircraft

A structural assembly for an aircraft having a longitudinal direction and a median plane, the structural assembly comprising:

• a plurality of pairs of main gantries, wherein, for a pair, the main gantries face one another with respect to the median plane and wherein the pairs are distributed in the longitudinal direction;
• two transverse panels that are perpendicular to the longitudinal direction and are fixed to a front and a rear of the plurality of pairs of main gantries to together define a compartment for a landing gear of the aircraft;
• at least one pair of secondary gantries which extend parallel to the longitudinal direction between the main gantries and ends of which are fixed to the transverse panels;
• at least one crossmember which extends parallel to the transverse panels and is disposed straddling at least one secondary gantry;
• and
• for each secondary gantry and each crossmember straddling the secondary gantry, a connecting rod mounted to be able to freely rotate, via a first end, on a lower part of the crossmember and, via a second end, on an outer lateral part of the secondary gantry.