Active control for a seismic isolated bridge to prevent rubber bearings from hardening against earthquake exceeding a design seismic motion
Active control for a seismic isolated bridge to prevent rubber bearings from hardening against earthquake exceeding a design seismic motion
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隔震桥梁的主动控制，防止橡胶支座因地震超过设计地震运动而硬化
DOI：
10.11532/structcivil.68a.202
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
伊津野和行
中科院分区：
文献类型：
--
作者：
豊田英夫;四井早紀;野村泰稔;伊津野和行
对于隔震桥梁来说，考虑橡胶支座抵抗比设计地震运动更强的地震运动的硬化现象非常重要。当硬化现象发生时，轴承刚度突然增大，桥墩上作用有很大的惯性力。本研究研究了一种采用模糊控制的主动振动控制方法，用于隔震桥梁，以防止硬化现象。结果表明，在发生强于设计地震的地震运动时，受控桥梁可以防止橡胶支座硬化。
Consideration of a hardening phenomenon of rubber bearings against seismic motions stronger than a design seismic motion is important for seismic isolated bridges. When the hardening phenomenon occurs, bearing stiffness suddenly increases and a large inertia force acts on the pier. This study investigated an active vibration control method using fuzzy control for the seismic isolated bridge to prevent the hardening phenomenon. The results showed that the controlled bridge prevented the rubber bearing from hardening in the event of an earthquake motion stronger than the design seismic motion.