A pendulous external elevator shaft system with multi-level frequency modulation function

Abstract

The invention discloses a pendulum type external elevator shaft system with a multi-stage frequency modulation function. When a structure vibrates, multiple natural vibration periods of a tuning pendulum type external elevator shaft are equal to or approximate to the multi-stage period of the structure, so that tuning vibration reduction control over multiple vibration modes of the structure is achieved. The rigidity of friction vibration isolation supports is changed through the thickness of a sliding block and a friction material according to the actual demand, so that the integral rigidityof a device is conveniently adjusted according to the actual condition of the structure. In order to ensure the safety of personnel during an earthquake, the power supply of an elevator is cut off, and running of the elevator is prohibited; an elevator system stays in a non-working state during the earthquake and is converted into an equivalent swing wall system to carry out energy dissipation andvibration reduction on the main body of a building structure. When the structure vibrates and shaking of the main body structure exceeds a certain range, a rigid connecting rod can push a rotary support, a limiting plate does not limit sliding of sliding supports any more, and the tuning pendulum type external elevator shaft swings, so that a multi-stage tuning function is achieved.

Description

technical field [0001] The invention relates to a pendulum-type external elevator shaft system with a multi-order frequency modulation function. Its function is to realize multi-vibration analysis of structures under wind loads and earthquakes through multiple tuning elevator shaft modules and friction isolation supports. Tuning vibration reduction control, and through the friction between the sliding surface of the friction isolation bearing and the slider, it can consume a large amount of seismic energy and reduce the dynamic response of the structure, which belongs to the field of structural vibration reduction. Background technique [0002] The study found that weakening the embedding of the foundation to the wall in the structure allows the foot of the wall to lift up to produce a swing effect during a strong earthquake, which helps to reduce the seismic response of the structure. According to this principle, foreign experts put forward the concept of swinging wall. Sin...

AI Technical Summary

Problems solved by technology

However, the traditional swing wall system has its disadvantages: 1) The swing wall itself is usually required to maintain elasticity, so it basically does not have the energy dissipation capacity, and often needs to adopt a certain additional energy dissipation mechanism; 2) The interface gap between the wall and the foundation is small, The rotation ability of the wall is limited, and cracks will inevitably occur on the bottom wall under the action of strong earthquakes. Such cracks are not easy to repair and cannot meet the needs of rapid recovery of functions; 3) The current research on the connection between the swing wall and the frame structure Fewer, more in-depth research is urgently needed

Images