| 引用本文: | 赵星,刘洋,周威.弹簧隔振支座水平滞回性能试验与分析[J].哈尔滨工业大学学报,2018,50(12):178.DOI:10.11918/j.issn.0367-6234.201807098 |
| ZHAO Xing,LIU Yang,ZHOU Wei.Experimetal analysis on horizontal hysteresis performance of spring bearing[J].Journal of Harbin Institute of Technology,2018,50(12):178.DOI:10.11918/j.issn.0367-6234.201807098 |
|
| 摘要: |
| 为获得大型设施竖向隔振所需的弹簧支座的抗振性能与抗振设计方法,以盖板水平位移是否被限制以及竖向力的大小为基本参数,完成了100 kN和300 kN两类共计10个试件的弹簧隔振支座水平反复荷载与水平位移关系的拟静力试验,获得了考虑竖向荷载影响的滞回关系曲线．试验发现:滞回关系均呈现为初期小位移下为线弹性关系,竖向压缩对单圈极限侧移影响可忽略；较大位移后由于盖板的限制作用使滞回曲线表现为一定耗能；盖板无位移限制时,竖向压缩与水平变形的累积效应可导致局部弹簧发生不可逆塑性变形,其耗能能力和极限侧移能力较大．基于试验结果,提出了两类弹簧隔振支座弹性刚度、弹性变形限值取值方法,建议了罕遇地震影响下弹簧隔振支座位移弹性变形应组合竖向变形．事实证明,在大型设备以及建筑物中预设弹簧隔振支座可以在地震发生时有效提高设备以及建筑物的抗振性能,该研究结果可为大型消声室或半消声室等布置竖向弹簧隔振支座的大型设施震性能评价与抗震设计提供参考． |
| 关键词: 弹簧隔振支座 滞回曲线 弹塑性 弹性恢复力 |
| DOI：10.11918/j.issn.0367-6234.201807098 |
| 分类号:TB535.1 |
| 文献标识码:A |
| 基金项目:国家自然科学基金(51778186) |
|
| Experimetal analysis on horizontal hysteresis performance of spring bearing |
|
ZHAO Xing1,LIU Yang1,ZHOU Wei1,2,3
|
|
(1.School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China;2.Key Lab of Structures Dynamic Behavior and Control (Harbin Institute of Technology), Ministry of Education, Harbin 150090, China;3.Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters (Harbin Institute of Technology), Ministry of Industry and Information Technology, Harbin 150090, China)
|
| Abstract: |
| To obtain the anti-vibration performance and anti-vibration design method of the spring bearing for vertical vibration isolation of large facilities, taking the horizontal displacement limitation situation of the cover and the vertical force as the basic parameter, the pseudo-static test of the horizontal repeated load and horizontal displacement of the spring isolation bearing of 10 specimens of 100 kN and 300 kN was completed, and hysteresis curve considering the influence of vertical load was obtained. The hysteresis relationship was linear elastic relationship under the initial small displacement, and the influence of vertical compression on the single-circle limit lateral displacement was negligible.After a large displacement, the hysteresis curve showedcertain energy consumption due to the limitation of the cover plate.When the cover plate hadno displacement limitation, the cumulative effect of vertical compression and horizontal deformation can cause irreversible plastic deformation of the local spring, and its energy consumption capacity and limit lateral displacement ability were large. Based on the test results, the methods for determining the elastic stiffness and elastic deformation limit of two types of spring isolation bearings were proposed. The suggestion was madethat the elastic deformation of the spring vibration isolating support should be combined with vertical deformation under the influence of rare earthquakes. The research results can provide references for seismic performance evaluation and seismic design of large-scale facilities such as large anechoic chambers or semi-anechoic chambers with vertical vibration isolators. |
| Key words: spring isolation bearing hysteresis curve elastoplasticity elastic resilience |
