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| Damping performance analysis of energy dissipation frame structure with viscoelastic damper |
| Received:October 16, 2018 Revised:December 21, 2018 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20181016002 |
| KeyWord:frame damper frequency domain relaxation time coefficient damping Fourier transform |
| Author | Institution |
| 张敏 |
江西科技师范大学, 南昌 |
| 庞华英 |
广西科技大学, 柳州 |
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| Abstract: |
| Damping performance of a frame structure with viscoelastic dampers is studied,influence of the damping parameter on its seismic performance is analyzed,and the calculation method of the seismic action of the structure is presented in this paper.The Fourier transform is applied to the vibration equation of the frame structure with viscoelastic damper,the frequency domain solution of the vibration equation is solved,and the time domain solution of the equation is obtained by inverse Fourier transform,from which the effect of damping coefficient Cd and relaxation time coefficient η of the damper on the seismic response of the structure is analyzed.On this basis,a practical formula for calculating the economic distribution of the damping coefficient of viscoelastic dampers on each floor is proposed.In addition,the calculation method for the seismic action of the frame structure with viscoelastic dampers is given.From this,the seismic action of each floor and the bottom shear force of each vibration mode of the structure are analyzed,which indicates that the relaxation time coefficient η≤ 0.5~0.7 of the dampers installed in the frame structure should be controlled. |
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