斜拉索的参数振动  

PARAMETRIC VIBRATION OF THE CABLE IN CABLE-STAYED BRIDGE

作　　者：汪至刚[1] 孙炳楠[1] 

机构地区：[1]浙江大学

出　　处：《土木工程学报》2002年第5期28-33,共6页China Civil Engineering Journal

摘　　要：对斜拉桥拉索的参数振动问题建立了非线性力学模型 ,并进行了数值计算分析。指出了拉索参数振动的可能性 ,并对其特征进行了研究。对桥面振动而导致的拉索振动提出了一种新的抑振装置 。A nonlinear model for the parametric vibration of a cable is proposed in the paper.It is solved with the numerical method.It is pointed out that the parametric response may be occurred in the cable-stayed bridges due to the deck vibration under certain condition.The serious parametric vibration will be occurred while the frequency ratio of the cable to deck in some region.Based upon the numerical condition,a dashpot is proposed to install at the end of the cable.At last,the vibration of the cable caused by deck vibration with the damping system is reduced considerably.

关 键 词：拉索 参数振动 斜拉桥 数值计算 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]