斜拉桥斜拉索摆式杠杆质量阻尼器PLMD减振技术研究

Study on Vibration Reduction Technology of PLMD of Stay Cable of Cable- Stayed Bridge

针对鸭绿江大桥处于高寒地区、环境温度变化幅度大的情况,首次提出采用永磁式电涡流阻尼对斜拉索进行振动控制,并进行了系统的理论研究,在此基础上成功研制了减振效果不随环境温度改变的电磁式PLMD,控制超低温环境下斜拉索的大幅振动。

Aiming at the condition that Yalu temperature change, vibration control on stay cable for the first time, and systematic theoretical study River Bridge is in high and cold area with large environment by using permanent magnet eddy current damper is put forward is performed. On this basis, electromagnetic type PLMD is developed successfully so as to control large amplitude environment, and the vibration reduction effect will not vary vibration of stay cable under uhralow temperature with temperature.