Base isolation performance of a cone-type friction pendulum bearing system
Base isolation performance of a cone-type friction pendulum bearing system
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DOI：
10.12989/sem.2015.53.2.227
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发表时间：
2015-01
影响因子：
2.2
通讯作者：
B. Jeon;Sung-jin Chang;Sung-Wan Kim;Nam-Sik Kim
中科院分区：
文献类型：
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作者：
B. Jeon;Sung-jin Chang;Sung-Wan Kim;Nam-Sik Kim
CFPBS（锥形摩擦摆轴承系统）的开发用于控制传递到结构的加速度，以防止地震期间关键通信设备的损坏和退化。本研究通过数值分析评估了 CFPBS 的隔离性能。 CFPBS 被制造成与现有 FPS（摩擦摆系统）不同的圆锥体形状，并在摩擦表面上刻有图案。 CFPBS 的固有频率是通过使用由 4 个 CFPBS 组成的隔震系统进行的自由振动测试来评估的。为了确认抗震性能，使用从运动方程导出的 CFPBS 方程编写了数值分析程序。提出了 Tsai 报道的滚动式隔震轴承方程来设计 CFPBS 方程。创建并验证了满足韩国建筑规范结构 (KBC-2005) 最大地震等级的人工地震波，以通过数值分析来审查 CFPBS 的抗震性能。考虑CFPBS的上部结构质量和摩擦面的斜角，使用El Centro NS、Kobe NS和人工地震波进行数值分析。 CFPBS隔振性能评价基于数值分析结果，并在相同条件下将数值分析结果与简化理论方程进行对比分析。通过振动台试验验证了数值分析的有效性
A CFPBS (Cone-type Friction Pendulum Bearing System) was developed to control the acceleration delivered to a structure to prevent the damage and degradation of critical communication equipment during earthquakes. This study evaluated the isolation performance of the CFPBS by numerical analysis. The CFPBS was manufactured in the shape of a cone differenced with the existing FPS (Friction Pendulum System), and a pattern was engraved on the friction surface. The natural frequencies of the CFPBS were evaluated from a free-vibration test with a seismic isolator system consisting of 4 CFPBS. To confirm the earthquake-resistant performance, a numerical analysis program was prepared using the equation of the CFPBS induced from the equations of motion. The equation reported by Tsai for the rolling- type seismic isolation bearings was proposed to design the equation of the CFPBS. Artificial seismic waves that satisfy the maximum earthquake scale of the Korean Building Code-Structural (KBC-2005) were created and verified to review the earthquake-resistant performance of the CFPBS by numerical analysis. The superstructural mass of the CFPBS and the skew angle of friction surface were considered for numerical analysis with El Centro NS, Kobe NS and artificial seismic waves. The CFPBS isolation performance evaluation was based on the numerical analysis results, and comparative analysis was performed between the results from numerical analysis and simplified theoretical equation under the same conditions. The validity of numerical analysis was verified from the shaking table test