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Rotational inertia mass damper

A mass damper and inertial technology, which is applied in the fields of anti-seismic, shock-absorbing and wind-resistant engineering structures, can solve the problems of not making full use of the structure's function and affecting the space of the structure, and achieve the effect of weakening vibration response, saving building space, and frequency modulation Good results

Inactive Publication Date: 2014-06-04
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Generally, in order to effectively adjust the dynamic response of the structure, the mass tuned damper usually needs a larger mass and a larger movement space; but it affects the structural use space and cannot make full use of the structural use function

Method used

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Examples

Experimental program
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Effect test

example 1

[0021] Such as Figure 1-4 As shown, the inertial rotating mass damper adopts an iron shell and is fixed at the bottom of the beam through supports. When the overall structure vibrates and the beam vibrates horizontally, under the action of inertial force, the building and the shell will move. Due to the relative movement between the large-mass disc and the mass block, the disc will rotate, and the beam-column structure will The reverse force is applied to significantly weaken the vibration response of the original structure.

example 2

[0023] Such as Figure 1-5 As shown, the inertial rotating mass damper is connected to the bottom of the slab through bolts and fixed to the bottom of the stair landing. The structure and principle are similar to Example 1 and will not be described in detail here.

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Abstract

The invention belongs to the technical field of shock resistance, shock absorption and wind resistance of engineering structures, and discloses a rotational inertia mass damper. The rotational inertia mass damper comprises a mass block, a guide rod, guide blocks, a large mass disk and an outer shell. When an external structure vibrates and drives the outer shell to vibrate, due to the action of the inertia, a building and the outer shell move, and then the disk and the guide blocks move along with the outer shell. Due to the fact that the contact surface of the mass block and the outer shell is smooth, no external force acts on the mass block, the mass block keeps stable, the mass block and the disk move relatively, the disk is driven by a gear to rotate, acting force in the opposite direction is exerted on the structure through rotation of the disk, and vibration response of the structure is obviously weakened.

Description

technical field [0001] The invention relates to an inertial mass damper, which applies a force in the opposite direction to the original structure through the rotation of a large-mass disc to effectively attenuate the dynamic response of the structure, and belongs to the technical field of anti-seismic, shock-absorbing and wind-resistant engineering structures. Background technique [0002] In recent years, tuned mass dampers (TMDs) and tuned liquid dampers (TLDs) have attracted widespread attention in the engineering community due to their excellent damping properties. Stiffness and damping, by adjusting the natural frequency of the attached structure, reduce the structural frequency to achieve the effect of shock absorption. [0003] The mass tuned damper is to drive the TMD system to vibrate together when the structure vibrates under external excitation, and the inertial force generated by the TMD system reacts on the structure, so that the vibration response of the origi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/98
Inventor 杜红凯韩淼崔相东朱爱东张文会叶烈伟张荣强
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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