Lead core rubber support added with hindered phenol antioxidant

Abstract

The invention discloses a lead core rubber support added with a hindered phenol antioxidant. The lead core rubber support comprises an upper connecting plate, a lower connecting plate, an upper innersealing steel plate, a lower inner sealing steel plate, a rubber sheet, a stiffening steel plate, outer-layer rubber and a lead core; the lead core is arranged in the middle between the upper connecting plate and the lower connecting plate; a plurality of connecting bolts are arranged at the periphery of the lead core; the plurality of bolts are circularly arranged, and two ends of the plurality of bolts are fixedly connected with the upper connecting plate and the lower connecting plate; and the lower inner sealing steel plate, a buffer plate group and the upper inner sealing steel plate aresleeved on the lead core and the bolts. Oxygen has an important influence on corrosion of a support when a building is built in an offshore structure, and the problems of aging and cracking of rubberneed to be considered when a lead core rubber shock insulation support for foundation shock insulation is designed for earthquake resistance; and in order to improve the durability of the rubber, antioxidant-hindered phenol antioxidant is added into the rubber, so that the durability of the support is integrally improved.

Description

technical field [0001] The invention belongs to the technical field of seismic isolation of civil engineering structures, and in particular relates to a lead rubber bearing added with a hindered phenolic antioxidant. Background technique [0002] China is located between the circum-Pacific seismic belt and the Eurasian seismic belt, and is one of the earthquake-prone countries. Under the action of strong earthquakes, a large number of building structures and bridge structures will be damaged or even collapsed. It is difficult to ensure the safety of the structure if only relying on the structure's own seismic resistance in the high-intensity area. The emergence of seismic isolation devices provides a new method for the seismic design of building structures and bridge structures, and its effectiveness has been tested by actual projects. [0003] The support is an important node component used to connect the upper structure (such as the main body of the building, etc.) and t...

AI Technical Summary

Problems solved by technology

[0004] At the same time, during the daily use of the structure, structural damage and collapse incidents due to the quality problems of the bearing itself also occur from time to time

Once the support as an important node in the structure fails, it will lead to a change in the force transmission mode in the structure, which will have an adverse effect on the seismic performance of other parts of the structure, further aggravating the structural damage or earthquake damage

The base isolation bearing generally adopts lead core rubber bearing, but because the base isolation is used in offshore structures, the rubber will be oxidized by seawater, causing the rubber to age and crack, and the durability is poor.

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