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Optimal design method of double-layer tuned mass damper based on connection stiffness

A technology for tuning mass damping and connection stiffness, which is applied to building components, earthquake resistance, etc., and can solve the problems that the structure does not meet the use function and safety

Active Publication Date: 2017-07-25
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the high uncertainty of seismic load, the nonlinearity of materials and the variation of performance during use, as well as the limitations of existing structural analysis and design methods make it possible that the structure does not meet the requirements of function and safety.

Method used

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  • Optimal design method of double-layer tuned mass damper based on connection stiffness
  • Optimal design method of double-layer tuned mass damper based on connection stiffness
  • Optimal design method of double-layer tuned mass damper based on connection stiffness

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Embodiment 1

[0062] Such as figure 1 As shown, the optimal design method of double-layer tuned mass damper based on connection stiffness includes the following steps:

[0063] 1) Establish structure-mechanical model of double-layer tuned mass damper SDTMD system based on connection stiffness: from the mass m of the structure itself s , damping c s and stiffness k s , on the basis of a single tuned mass damper TMD, a small mass is added in series, and an additional spring is added between the structural mass and the small mass. Then the structure-mechanical model of the double-layer tuned mass damper SDTMD system based on the connection stiffness is established;

[0064] 2) Establish structure—dynamic equation of double-layer tuned mass damper SDTMD system based on connection stiffness: According to the principle of structural dynamics, the structure and the first tuned mass damper TMD1 and the second tuned mass damper TMD2 are stressed Analysis and establishment of structure-SDTMD syst...

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Abstract

The invention discloses a method for optimally designing stiffness based double tuned mass dampers. The technical scheme includes that the method comprises 1), building models of structure-SDTMD (stiffness based tuned mass dampers) systems; 2), creating the structure-SDTMD systems and kinetic equations; 3), optimally computing parameters of the stiffness based double tuned mass dampers by the aid of genetic algorithms; 4), comparing the parameters and designing the stiffness based double tuned mass dampers by the aid of selected optimal combination parameters. The method has the advantages that the stiffness based double tuned mass dampers are applicable to all structures, displacement response of the structures can be effectively controlled under the actions of earthquake, and the stiffness based double tuned mass dampers are superior to TMD (tuned mass dampers), DTMD (double tuned mass dampers) and DDTMD (damping based double tuned mass dampers).

Description

technical field [0001] The invention relates to an optimal design method of a double-layer tuned mass damper (Stiffness based doubletuned mass dampers, SDTMD) based on connection stiffness. Background technique [0002] As a natural disaster that seriously threatens the safety of human life and property, earthquake has caused huge disasters to human beings. It is one of the many earthquake-prone countries, such as the Wenchuan earthquake, Japan earthquake, and Ya'an earthquake that occurred in recent years. These major earthquakes not only caused great economic losses, but also brought great grief and serious psychological damage to people. In the 21st century, with the rapid development of the world economy, people have put forward higher and higher requirements for the safety and disaster prevention of engineering structures, requiring engineering structures not to be damaged when natural disasters (such as strong earthquakes and typhoons) occur damage, and requires that ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/98
Inventor 李春祥曹黎媛迟恩楠
Owner SHANGHAI UNIV
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