利用MTMD和MTLD控制拱桥振动试验研究

Study on MTMD and MTLD for controlling vibration of arch bridges

本文以金沙江通阳大桥的振动控制为研究背景。结合有限元分析手段,利用MTMD控制拱桥竖向振动、MTLD控制拱桥侧向振动。对比例为1∶50的模型拱桥进行试验研究,测试结果表明,拱桥的竖向最大减振效果能够达到36.03%,侧向最大减振效果能够达到38.6%,总体控制效果令人满意。

The study is based on the vibration controlling of Jinsha River Bridge. Combining with finite element analysis, the MTMD is used to control the vertical vibration of arch bridges, and the MTLD to control the lateral vibration. In order to verify the controlling effect, the model of arch bridge in the ratio of 1：50 to the real arch bridge is tested. The results show that the largest vertical controlling effect can reach 36.03 % and the largest lateral controlling effect can reach 38.6%. The general effect of control is proved satisfactory.