|
| Random vibration analysis of energy dissipation frame structure installing viscoelastic dampers with supports |
| Received:April 18, 2020 Revised:July 13, 2020 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20200418001 |
| KeyWord:random power spectrum support relaxation time coefficient earthquake damper |
| Author | Institution |
| 张敏 |
江西科技师范大学 建筑工程学院, 南昌 ;广西科技大学, 土木建筑工程学院, 柳州 |
| 付熊 |
广西科技大学, 土木建筑工程学院, 柳州 |
| 陈钰雪 |
广西科技大学, 土木建筑工程学院, 柳州 |
| 邵海浪 |
广西科技大学, 土木建筑工程学院, 柳州 |
|
| Hits: 482 |
| Download times: 459 |
| Abstract: |
| The damping performance of a frame structure installed with viscoelastic dampers with supports is analyzed.Firstly,the effects of the viscoelastic damper relaxation time coefficient η and the support coefficient ψ on the composite stiffness of the viscoelastic damper are studied.On this basis,the vibration equation of the frame structure is solved according to the theory of random vibration,from which the mean square deviations of the layer drift angle,the top floor displacement and the earthquake response of each floor under the improved Kanai-Tajimi power spectrum seismic excitation are studied.According to the analysis of calculation example,it is shown that a reasonable value of the damper support coefficient ψ should be taken based on the relaxation time coefficient η,and as long as the support coefficient ψ is large enough,the effect on the damping performance of viscoelastic dampers can be neglected;besides,the damper relaxation time coefficient η should not be too large,and the seismic response of each floor of the frame structure with viscoelastic dampers is obviously lower than that of the frame structure without dampers. |
|
|
|