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| Study on vertical vibration isolation system with human-structure dynamic interaction |
| Received:December 04, 2008 |
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| DOI：10.7511/jslx20105017 |
| KeyWord:vertical vibration isolation human-structure dynamic interaction dynamic coupling equations complex modal analysis disk spring bearing |
| Author | Institution |
| 何浩祥 |
北京工业大学 工程抗震与结构诊治北京市重点实验室,北京 |
| 闫维明 |
北京工业大学 工程抗震与结构诊治北京市重点实验室,北京 |
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| Abstract: |
| The vertical vibrations of building structures under ambient vibration or earthquake could not be ignored, and vertical vibration isolation devices are needed to reduce the dynamic amplitude. The isolated structure model considering human-structure dynamic interaction is more objective, and the human responses can be also obtained. Disk spring bearing is introduced as vertical base isolation damper, and vertical human body models with different postures are selected according to ISO5982, hence the dynamic coupling equations with non-classical damping for base isolation structure and human are established. The dynamic equations are decoupled by complex modal analysis method. A 10-story building is studied to analyze the performance of disk spring bearings and the human-structure dynamic interaction. The results show that the vibration reduction effects of floors in the structure with uniform mass and stiffness are more obvious when the numbers of human occupants increase. The vertical vibration on floors decrease remarkably and the human comfort is improved when the disk spring bearings are installed. |