Integral sliding friction pendulum isolation layer on the bottom surface

Abstract

The invention discloses a swinging type shock insulation layer capable of achieving overall sliding friction of the bottom surface. The shock insulation layer comprises a bottom surface spherical shell and an upper-portion spherical-surface framework, wherein the lower side of the bottom surface spherical shell and a concrete foundation or a lower structure are cast integrally, and the upper surface is a large-span large-curvature-radius arc spherical surface; the upper-portion spherical-surface framework is formed by connecting a plurality of sliding blocks, connecting beams, load bearing pillars and connecting components, the lower portions of the connecting components are welded to the sliding blocks, the sides of the connecting components are connected with the connecting beams, the upper portions of the connecting components are connected with an upper structure through the load bearing pillars, the sliding blocks are in lap-joint with the upper surface of the bottom surface spherical shell, the lower surfaces of the sliding blocks keep consistent with corresponding positions of the arc spherical surface, and point-contact is avoided. The sliding spherical-surface framework is formed through connection between the sliding blocks and forms the swinging type shock insulation layer capable of achieving overall sliding friction of the bottom surface together with the bottom surface spherical shell. The bottom surface spherical shell has a large span, the allowed deformation in the horizontal direction is far higher than that of a shock insulation support, and the horizontal deformation of the shock insulation layer under super-large shock can be completely met.

Description

technical field [0001] The invention belongs to the technical field of shock absorption and isolation of building structures, and relates to a bottom integral sliding friction pendulum type shock isolation layer. Background technique [0002] Seismic isolation technology is an outstanding research achievement in the field of structural seismicity in the past 50 years, and has been widely used in my country. Seismic isolation measures can make the superstructure in an elastic or weakly nonlinear state under the action of a large earthquake, reducing the seismic response of the superstructure. However, due to its clear failure mode, the deformation of the isolation layer and the overturning of the overall structure are prominent problems of the isolation structure under the action of a super large earthquake. Common seismic isolation devices for building structures include rubber bearings and friction pendulum bearings, whose horizontal deformation capacity is limited by the ...

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Problems solved by technology

[0003] In order to solve the problem that the existing seismic isolation bearings are difficult to meet the anti-ultra-large earthquake performance of high-level waterproofing isolation buildings, the present invention provides an integral sliding friction pendulum type isolation layer on the bottom surface

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