Multistage triggering fabricated seismic-isolation support for connection of skirt steel roof and high-rise building

Abstract

The invention belongs to the technical field of seismic reduction and isolation of building structures and particularly relates to a multistage triggering fabricated seismic-isolation support for connection of a skirt steel roof and a high-rise building. The multistage triggering fabricated seismic-isolation support comprises a sliding part fixed to a pre-embedded steel plate of the high-rise building and a seismic-isolation part fixed to a bottom end plate of the skirt steel roof, and the sliding part and the seismic-isolation part are assembled to form a multistage triggering fabricated structure. The multistage triggering fabricated seismic-isolation support has the beneficial effects that the multistage triggering fabricated seismic-isolation support has the advantages of staged seismic isolation, fabricated connection, simple principle, reliable performance, convenient replacement and the like; staged seismic-isolation control of connection of the skirt steel roof and the high-rise building can be achieved; the advantages that small earthquakes are isolated through sliding of the sliding part, medium and large earthquakes are dually isolated through the sliding part and the seismic-isolation part, self-resetting of the support after the earthquakes is achieved, and the fabrication can be achieved are achieved; and the multistage triggering fabricated seismic-isolation support can be widely applied to connection of the skirt roof and the main building and has wide application prospects in the field of cast-in-situ structures and fabricated structures.

Description

technical field [0001] The invention belongs to the technical field of shock absorption and isolation of building structures, and in particular relates to a multi-stage trigger assembly type shock isolation support used for connecting a skirt steel roof to a high-rise building. Background technique [0002] At present, seismic isolation bearings are mostly used to connect bridge decks and bridge piers, superstructures and foundations to achieve shock absorption for bridges and building structures. With the continuous acceleration of the urbanization process and the continuous construction of high-rise buildings, many high-rise structures are equipped with podiums. For the convenience of construction, rigid connections are used at the connection between the podium steel roof and the main building. Because the main building and the podium The height, quality, and stiffness are quite different. This rigid connection may cause a large deviation between the center of mass and the...

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Problems solved by technology

[0004] In order to overcome and avoid the weak seismic performance of the rigid connection between the skirt steel roof and the high-rise building, as well as the low shock absorption rate of the existing seismic isolation bearings, easy fatigue, and inability to resist the large overturning moment of the steel roof, the present invention aims to Provide a multi-stage trigger assembly type seismic isolation support for the connection between the skirt steel roof and high-rise buildings, which is not only used for the assembly structure connection, the construction is fast, but also can play the seismic isolation effect of different isolation support, to achieve 1+1>2 shock isolation effect

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