THREE-HINGED FRAME FOR QUAKEPROOF CONSTRUCTION Russian patent published in 2013 - IPC E04C3/42 E04H9/02 

FIELD: construction.

SUBSTANCE: three-hinged frame comprises two symmetrically arranged crossbars, two stands and two struts, combined into a frame structure with rigid cornice units and hinged coupling of crossbars in a ridge and stands with foundations. Frame crossbars are made with double-tee cross section, comprising outer and inner belts connected to each other with an elasto-yielding wavy wall. At the ends the crossbars have a boxy section made of outer and inner belts, transverse and diagonal stiffening ribs and double-sided pads. The cornice end of the crossbar is reinforced with a steel frame, in which reinforcing elements of outer and inner belts are made of bent rods, and the reinforcing element of the diagonal rib is rigidly connected with them in the areas of bending. The inner belt of the crossbar is connected with a strut via a shock-absorbing pad with double-sided pads having oval slots, and the outer belt of the crossbar is connected with a stand with the help of a damper with a spring. The lower end of the stand has a ledge rigidly connected with it and resting on a support slab, and the lower end of the strut is connected with a ledge by means of paired pads.

EFFECT: increased operational reliability of a frame.

5 dwg