The Empirical Analysis on the Reinforcement Application of the Energy Dissipation to the Framework Structure

2013 ◽  
Vol 671-674 ◽  
pp. 580-585
Author(s):  
Ya Juan Sun ◽  
Xiao Dong Yang
Keyword(s):  
Comparative Analysis ◽  
Energy Dissipation ◽  
Empirical Analysis ◽  
Framework Structure ◽  
Basic Principles ◽  
Passive Energy Dissipation ◽  
Energy Dissipation System ◽  
The Empirical Analysis ◽  
Dissipation System

With the development of passive energy dissipation technology, using friction damped braces to retrofitted structural are suggested in this paper. Described the basic principles and mechanism of seismic controlled by energy dissipation. The comparative analysis of structure with or without friction damped braces is conducted, and the results show that energy dissipation system is very effective and the working behavior of structure is stable.

scholarly journals Low-Cyclic Loading Tests of Self-Centering Variable Friction (SCVF) Brace

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Qingguang He ◽  
Yanxia Bai ◽  
Weike Wu ◽  
Yongfeng Du
Keyword(s):  
Finite Element ◽  
Friction Coefficient ◽  
Energy Dissipation ◽  
Cyclic Loading ◽  
Variable Friction ◽  
Loading Tests ◽  
Low Cyclic Loading ◽  
Energy Dissipation System ◽  
Cyclic Loading Tests ◽  
Dissipation System

A novel assembled self-centering variable friction (SCVF) brace is proposed which is composed of an energy dissipation system, a self-centering system, and a set of force transmission devices. The hysteretic characteristics and energy dissipation of the SCVF brace with various parameters from low-cyclic loading tests are presented. A finite element model was constructed and tested under simulated examination for comparative analysis. The results indicate that the brace shows an atypical flag-type hysteresis curve. The SCVF brace showed its stable self-centering ability and dissipation energy capacity within the permitted axial deformation under different spring and friction plates. A larger deflection of the friction plate will make the variable friction of this SCVF brace more obvious. A higher friction coefficient will make the energy dissipation capacity of the SCVF brace stronger, but the actual friction coefficient will be lower than the design value after repeated cycles. The results of the fatigue tests showed that the energy dissipation system formed by the ceramic fiber friction blocks and the friction steel plates in the SCVF brace has a certain stability. The finite element simulation results are essentially consistent with the obtained test results, which is conducive to the use of finite element software for calculation and structural analysis in actual engineering design.

Parameters Analysis of Bracing Structure with Friction Energy Dissipation System

2014 ◽  
Vol 541-542 ◽  
pp. 857-860
Author(s):  
Wei Zhou ◽  
Xiao Xu ◽  
Wen Xiu Hao
Keyword(s):  
Energy Dissipation ◽  
Efficient System ◽  
Building Model ◽  
Frame Building ◽  
Yield Displacement ◽  
Friction Energy ◽  
Parameters Analysis ◽  
Energy Dissipation System ◽  
Dissipation System ◽  
Rational Range

Friction energy dissipating bracing is the kind of efficient system in reducing seismic of buildings. The main parameters are bracing stiffness and yielding displacement of friction energy dissipating devices in this system, which are important to the design of reducing seismic systems. Five-story steel frame building model with friction energy dissipating bracing in each floor is established, whose dynamic response of structure is studied when the value of main parameters is changed. The results show that the displacement of structure are decreased obviously and the acceleration of structure is first decreased and then increased when the bracing stiffness and yield displacement of friction energy dissipating devices are increased. In addition, the rational range of parameters is suggested for the design of friction energy dissipation systems.

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