A separate automatic rebound horizontal shear locking device

Abstract

The invention relates to a separated automatic-rebounding horizontal shearing locking device which comprises an upper flange, a shearing pin, a lower flange, a rubber sleeve, a screw, a base plate, an upper sleeve, reinforcing ribs, a lower sleeve, an upper connecting plate and a lower connecting plate. The upper flange, the upper sleeve and the corresponding reinforcing ribs are welded and combined together and are fixed with an upper structure through the upper connecting plate, and the lower flange, the lower sleeve and the corresponding reinforcing ribs are welded and combined together, and are fixed with a foundation through the lower connecting plate. Round holes are reserved in the center of the bottom end of the upper sleeve and the center of the top end of the lower sleeve, and the two ends of the shearing pin are inserted into the round hole of the upper sleeve and the round hole of the lower sleeve respectively. The lower sleeve and a rubber sleeve are bound through a vulcanization technology, the base plate is inserted into the rubber sleeve and the lower sleeve through the screw, and fixed into the shearing pin, the rubber sleeve generates pretension force after the screw is tightened, and therefore the aims that the lower half portion of the shearing pin rebounds downwards after the shearing pin is shorn, and normal hysteresis of a rubber support is not influenced are achieved.

Description

technical field [0001] The invention belongs to the field of shock absorption and isolation of building structures, in particular to a separate automatic rebound horizontal shear locking device. Background technique [0002] The nuclear power plant structure is a special structural system, and earthquake is one of the biggest threats to its safety. When subjected to an earthquake, all structures, systems, components and equipment of a nuclear power plant are excited almost simultaneously, which will endanger the integrity of the structure and the integrity of the functions of the equipment and components. [0003] The loss of life and property caused by the severe earthquake is shocking. If a severe earthquake occurs in the area where the nuclear power plant is located, the consequences will be disastrous. In 1999, the Jiji Earthquake shut down two units of the Taiwan No. 1 Nuclear Power Plant. In 2007, the Niigata Earthquake in Japan led to the closure of the Kashiwazaki K...

AI Technical Summary

Problems solved by technology

Seismic isolation can effectively reduce the acceleration seismic response of the nuclear island, but at the same time, the excessive displacement of the seismic isolation layer may cause the pipelines entering and leaving the nuclear island to break, which is likely to cause secondary damage

This has become a key issue limiting the application of seismic isolation technology in nuclear power structures

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