Adjustable swing-type tuned mass damper

Abstract

The invention relates to an adjustable swing-type tuned mass damper, which belongs to the technical field of controlling engineering structure vibration. Mass blocks of the damper are connected and fixed in a base and distributed in a local range or a full range of the base. In the length direction of the base, one end of the base is connected with a floor through a hinge support, and the other end of the base is connected with the floor through the damper. Frame connecting pieces and floor connecting pieces are arranged near the middle part of a frame on two sides of the base and in positions corresponding to the floor respectively, and are provided with slipways respectively. Springs are arranged in upper slipways and lower slipways and can be adjustable or fixed in position along the length direction of the base so as to connect the base with the floor. The damper can be arranged on the floor of a common building to obviously reduce floor vibration caused by the walking or other activities of people and other factors, and can play a role in reducing vibration within a wide change range of the actual stress conditions of the floor by setting or regulating the mass of the mass blocks and the positions of the springs.

Description

technical field [0001] The invention is an adjustable pendulum tuned mass damper (Adjustable Pendulum Tuned Mass Damper, referred to as APTMD), which belongs to the technical field of engineering structure vibration control and is mainly used in building structure engineering and civil engineering. Background technique [0002] With the development of society, the span of the building floor structure is increasing continuously, and the adoption of high-strength materials and new structural forms can reduce the thickness of the floor slab. The comfort problem caused by floor vibration caused by activities and other factors has become increasingly prominent, which will bring discomfort to users, reduce environmental quality, and affect work efficiency, which has attracted increasing attention at home and abroad. [0003] There are currently very limited options for reasonable solutions to this problem. In principle, it is reasonable and effective to install a tuned mass dampe...

AI Technical Summary

Problems solved by technology

[0004] 1. The vertical size of TMD in the traditional structure is large, and there is not enough installation space for general floors without equipment floors;

[0005] 2. The actual load and other parameters of the floor in use are often quite different from the design values, which will make the TMD of the parameters set according to the latter out of adjustment and reduce the expected vibration reduction effect

However, the mass blocks used in PTMD are evenly distributed over the entire range of its base, making it less efficient to function, and once the mass and spring stiffness are set, the PTMD parameters are fixed, making it difficult to solve the above-mentioned second problem

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