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| Study on optimum arrangement of hysteretic dampers in frame structure | |
| 作者姓名： | 李玉顺 沈世钊 刘瑞 |
| 作者单位： | Dept. of Civil Engineering Ningbo University，School of Civil Engineering Harbin Institute of Technology，Dept. of Civil Engineering University of Colorado at Denver Colorado USA，Ningbo 315211，China，Harbin 150090，China |
| 基金项目： | Sponsored by China Postdoctoral Science Foundation(Grant No2005037186)，Heilongjiang Postdoctoral Science Foundation(Grant No2005LBH-Z05035) |
| 摘 要： | The earthquake mitigation effect of hysteretic dampers is not only related to the number, stiffness, strength, deformation ability of dampers but also to the strength and stiffness of the structure. This paper studied the condition that structures should be in when the hysteretic dampers mitigated seismic action most effectively and made appropriate numerical analysis to verify the effectiveness of theory derivation. The inelastic seismic responses were analyzed for the SDOF system that the shear strength ratio of the damper system was taken differently and the result showed that when the ratio was in the vicinity of the optimum strength ratio of the damper system, the displacement of the structure was minimum and the energy dissipation of dampers was maximum, which indicated that the dampers mitigated seismic action most effectively. The result also indicated that the hysteretic dampers had significant earthquake mitigation effect when the strength ratio β changed in a relatively wide range. |
| 关 键 词： | 磁滞节气闸 相等粘性阻尼比例 力量比例 地震缓解效应 |
| 文章编号： | 1005-9113（2007）04-0566-05 |
| 修稿时间： | 2005-10-13 |
Study on optimum arrangement of hysteretic dampers in frame structure |
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| LI Yu-shun,SHEN Shi-zhao,LIU Rui.Study on optimum arrangement of hysteretic dampers in frame structure[J].Journal of Harbin Institute of Technology,2007,14(4):566-570. | |
| Authors: | LI Yu-shun SHEN Shi-zhao LIU Rui |
| Affiliation: | 1. Dept.of Civil Engineering, Ningbo University, Ningbo 315211 ,China 2. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090,China 3. Dept. of Civil Engineering, University of Colorado at Denver, Colorado, USA |
| Abstract: | The earthquake mitigation effect of hysteretic dampers is not only related to the number, stiffness,strength, deformation ability of dampers but also to the strength and stiffness of the structure. This paper studied the condition that structures should be in when the hysteretic dampers mitigated seismic action most effectively and made appropriate numerical analysis to verify the effectiveness of theory derivation. The inelastic seismic responses were analyzed for the SDOF system that the shear strength ratio of the damper system was taken differently and the result showed that when the ratio was in the vicinity of the optimum strength ratio of the damper system, the displacement of the structure was minimum and the energy dissipation of dampers was maximum, which indicated that the dampers mitigated seismic action most effectively. The result also indicated that the hysteretic dampers had significant earthquake mitigation effect when the strength ratio β changed in a relatively wide range. |
| Keywords: | hysteretic dampers equivalent viscous damping ratio optimum strength ratio earthquake mitigation effect |
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