Three-dimensional shock-isolated bearing and preparation method for same

Abstract

The invention belongs to the technical field of building shock-isolated bearings, and discloses a three-dimensional shock-isolated bearing and a preparation method for the three-dimensional shock-isolated bearing. The three-dimensional shock-isolated bearing is mainly technically characterized by comprising a laminated rubber shock-isolated bearing body, wherein a lower connection plate is arranged below the laminated rubber shock-isolated bearing body; a basin-type shear-resistant plate and a basin-type upper connection plate are arranged on the laminated rubber shock-isolated bearing body; the lower connection plate is connected with the basin-type upper connection plate via a pull-resistant limit rod; an inner pull plate is arranged on the basin inner wall of the basin-type upper connection plate; an outer pull plate matched with the inner pull plate is arranged on the basin outer wall of the basin-type shear-resistant plate; a support guide shaft is arranged on the top surface of the basin-type shear-resistant plate; a composite spring layer composed of a disc spring and multilayer rubber sheets is sleeved on the support guide shaft; and a guide groove matched with the support guide shaft is arranged on the bottom surface of the basin-type upper connection plate. The three-dimensional shock-isolated bearing disclosed by the invention can bear either a great vertical bearing force or a large pull force, and has certain stiffness and damping force in the vertical direction and the horizontal direction.

Description

Technical field [0001] The invention belongs to the technical field of building seismic isolation bearings, and in particular relates to a three-way seismic isolation bearing and a preparation method thereof. Background technique [0002] In the earthquake zone, the vibration-isolating rubber bearings used for houses, bridges or other structures can effectively isolate the transmission of seismic energy to the upper structure when an earthquake occurs, thereby reducing the damage to the building or bridge caused by the earthquake disaster. However, the structural characteristics of this kind of shock-isolating rubber bearing determine its low tensile strength. Therefore, the national standard GB5001-2010 "Code for Seismic Design of Buildings" has made strict regulations on the limit of tensile stress of building seismic isolation rubber bearings under the simultaneous action of rare earthquake horizontal and vertical earthquakes. This deficiency of the shock-isolating rubber bea...

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Problems solved by technology

In addition, ordinary shock-isolation rubber bearings can only isolate horizontal earthquakes, but not vertical earthquakes. Different seismic waves and sites have different corresponding excellent periods. Therefore, the seismic isolation structure must be based on seismic waves and site conditions. Reasonably design the vertical stiffness so that the vertical natural vibration period of the isolated structure avoids the seismic wave and the excellent period of the site, in order to achieve a better seismic isolation effect

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