Process for producing a modular structure comprising the following steps: - a first step of 3D molding the modules (11, 12) of the structure, through at least one 3D printer; - a second step of cleaning and surface finishing the modules (11, 12), to remove burrs and residues from the molded pieces; - a third step of withdrawing the modules (11, 12) and of transferring them to a preparing/dosing and distributing sub-station of a gluing substance, through handling means of the modules (11, 12); - a fourth step of distributing the gluing substance on interlocking elements (25, 26) and/or on surfaces (15, 16) of the modules (11, 12) to be fastened, through preparing/dosing and distributing means of the gluing substance, the modules (11, 12) to be fastened comprising at least one first module and at least one second module, the first module having a face with at least one first surface complementary with a second surface of a face of the second module, the first and second surfaces respectively comprising first interlocking elements and second interlocking elements, designed to be mutually interlocked to fasten the first module and the second module, with the first surface and the second surface mutually abutted; - a fifth step of recognizing and of transferring the modules (11, 12) in the respective position inside an assembling tank, through recognizing means and handling means of the modules (11, 12); - a sixth step of fastening the modules (11, 12) to the assembling tank, by means of a fastening system; - a seventh step of pressing/consolidating the modules (11, 12) to be fastened, through pressing means designed to keep pressed the surfaces (15, 16) of the modules (11, 12) to be fastened, so that the respective interlocking elements (25, 26) and/or surfaces (15, 16) mutually adhere by stably gluing themselves; - an optional eighth step of heating the modular structure for heating/reticulating the gluing substance; - a ninth step of detaching the modular structure from the assembling tank through handling means of the structure; - a tenth step of positioning the structure on a trolley/tray, through the handling means of the structure; characterized in that it further provides thin sensors, with integrated batteries, to monitor micro-movements of the glued elements. - a first step of 3D molding the modules (11, 12) of the structure, through at least one 3D printer; - a second step of cleaning and surface finishing the modules (11, 12), to remove burrs and residues from the molded pieces; - a third step of withdrawing the modules (11, 12) and of transferring them to a preparing/dosing and distributing sub-station of a gluing substance, through handling means of the modules (11, 12); - a fourth step of distributing the gluing substance on interlocking elements (25, 26) and/or on surfaces (15, 16) of the modules (11, 12) to be fastened, through preparing/dosing and distributing means of the gluing substance, the modules (11, 12) to be fastened comprising at least one first module and at least one second module, the first module having a face with at least one first surface complementary with a second surface of a face of the second module, the first and second surfaces respectively comprising first interlocking elements and second interlocking elements, designed to be mutually interlocked to fasten the first module and the second module, with the first surface and the second surface mutually abutted; - a fifth step of recognizing and of transferring the modules (11, 12) in the respective position inside an assembling tank, through recognizing means and handling means of the modules (11, 12); - a sixth step of fastening the modules (11, 12) to the assembling tank, by means of a fastening system; - a seventh step of pressing/consolidating the modules (11, 12) to be fastened, through pressing means designed to keep pressed the surfaces (15, 16) of the modules (11, 12) to be fastened, so that the respective interlocking elements (25, 26) and/or surfaces (15, 16) mutually adhere by stably gluing themselves; - an optional eighth step of heating the modular structure for heating/reticulating the gluing substance; - a ninth step of detaching the modular structure from the assembling tank through handling means of the structure; - a tenth step of positioning the structure on a trolley/tray, through the handling means of the structure; characterized in that it further provides thin sensors, with integrated batteries, to monitor micro-movements of the glued elements.