西安建筑科技大学学报(自然科学版)

与普通橡胶隔震支座不同,橡胶隔振支座单层橡胶较厚,竖向刚度随竖向面压增加而增大.橡胶隔振支座侧向变形采用矩形模拟,推导了侧向变形计算公式,并与试验作了对比,与试验结果接近.采用经典弹性力学理论,推导了1竖向刚度计算公式,得出了竖向刚度与竖向变形关系,并对橡胶隔振进行了竖向刚度试验验证.最后对橡胶隔振支座的疲劳性能进行了试验研究,结果表明,橡胶隔振支座具有良好的疲劳性能.

Unlike laminated rubber seismic isolation bearings,rubber vibration isolation bearings have a thicker single layer of rubber,and the vertical stiffness increases with the increase of vertical load.The lateral deformation profile of the rubber vibration isolation bearing is modeled in a rectangular shape,the lateral deformation calculation formula is derived and compared with the test results,and the theoretical calculation formula is close to the test results.Then,the vertical stiffness calculation formulas related to vertical deformation are deduced by the classical elasticity theory and verified by vertical stiffness tests.Finally,the fatigue performance test is performed on the rubber vibration isolation bearing,and the results show that the rubber vibration isolation bearing has good fatigue performance.

引言
1 橡胶隔振支座侧向变形
2 橡胶隔振支座竖向刚度
3 橡胶隔振支座疲劳性能
4 结语

图1 橡胶单元变形状态<br/>Fig.1 Deformation state of rubber unit

图1 橡胶单元变形状态
Fig.1 Deformation state of rubber unit

图2 橡胶隔振支座尺寸<br/>Fig.2 Size of rubber vibration isolation bearing

图2 橡胶隔振支座尺寸
Fig.2 Size of rubber vibration isolation bearing

表1 侧向变形试验值和理论模拟值<br/>Tab.1 Lateral deformation test values and theoretical simulation values

表1 侧向变形试验值和理论模拟值
Tab.1 Lateral deformation test values and theoretical simulation values

图3 侧向变形曲线对比<br/>Fig.3 Comparison of lateral deformation curves

图3 侧向变形曲线对比
Fig.3 Comparison of lateral deformation curves

图4 刚度比与变形关系<br/>Fig.4 Relationship between vertical stiffness ratio and vertical deformation

图4 刚度比与变形关系
Fig.4 Relationship between vertical stiffness ratio and vertical deformation

表2 竖向刚度试验结果<br/>Tab.2 Test results of vertical stiffness

表2 竖向刚度试验结果
Tab.2 Test results of vertical stiffness

图5 竖向刚度测试曲线<br/>Fig.5 Vertical stiffness test curves

图5 竖向刚度测试曲线
Fig.5 Vertical stiffness test curves

图6 橡胶隔振支座尺寸<br/>Fig.6 Size of rubber vibration isolation bearing

图6 橡胶隔振支座尺寸
Fig.6 Size of rubber vibration isolation bearing

图7 疲劳试验竖向刚度值<br/>Fig.7 Vertical stiffness values in the failure experiment

图7 疲劳试验竖向刚度值
Fig.7 Vertical stiffness values in the failure experiment

图8 竖向刚度测试曲线<br/>Fig.8 Vertical stiffness test curves

图8 竖向刚度测试曲线
Fig.8 Vertical stiffness test curves

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备注

引言

1 橡胶隔振支座侧向变形

2 橡胶隔振支座竖向刚度

3 橡胶隔振支座疲劳性能

4 结语

期刊信息