ADAPTIVE SYSTEM FOR SEISMIC PROTECTION OF OBJECTS (VERSIONS) Russian patent published in 2024 - IPC E04H9/02 

FIELD: systems and devices for active seismic protection of objects.

SUBSTANCE: group of inventions relates to systems and devices for active seismic protection of objects, to the field of machine building, as well as construction and mining, specifically to systems and devices for active seismic protection of critical, including strategic, objects for various purposes, placed in protective structures, for example, industrial reactors, platforms/metal structures with equipment and personnel (surface/buried) for data processing centres of large mass, etc., from spatial shock-seismic and pulse mechanical effects of kinematic nature. Adaptive system for seismic protection of objects provides for the installation of shock-absorbing devices in the seismic isolated layer between the base and the protected object, containing elastomeric shock absorbers of box shape with rigid plates for contact with the support surface of the object and for attachment to the base, respectively attached at the top and bottom to the ends of the side walls of the elastomer shock absorber. On contact surfaces of object and damping device antifriction coating is applied or antifriction elements are installed, as well as installation of unloading supports from rigid/weakly deformable material, made destructible/foldable under conditions of seismic action. Elastomer shock absorber has a barrel-shaped shape with side walls formed by unified elastic elements – tabs, separated by gaps, which can be installed in rows in a parallel quasi-axial pattern both in a circle and on the sides of a regular polygon/n-gon (n≥3), and the shape of the profile of which has an initial bulge providing the required type of power characteristic. Shock absorber is made as a friction-movable pendulum support with a sliding surface in the form of a solid material gasket with an antifriction insert in the form of a ball segment, fixed on rigid plate in its centre and with horizontal displacement of base sliding on spherical section/segment of support surface of object and creating force for re-centring due to compression of part of tabs of elastomer shock absorber. Relief support structure is formed by three separate rigid beams-braces in inverted tripod configuration – a regular triangular pyramid with its top downward and with its lower ends freely installed in the sectors-stops on the friction-movable plate lying on the base. On the upper ends of each beam-brace there are rigid contact plates with a stop and fixation on the support surface of the object by means of installation of elements-limiters of sliding and unlocking in conditions of seismic action when removing the weight load due to increasing the distance between the support surface of the object and the base by a given value and/or when a certain value of loading from the object is exceeded.

EFFECT: providing higher reliability and repairability of seismic protection system, degree of unification of elements/assemblies while providing the required parameters of devices with respect to standard and unique objects and expected dynamic characteristics of action, reduced cost of production.

7 cl, 12 dwg