湖南大学学报（自然科学版）2016，Vol.43Issue(11)：7-12,6.
阻尼器对悬索桥吊索扭转振动控制效果的数值研究∗
Numerical Study on the Mitigation of Torsional Vibration of the Hangers of Suspension Bridges by Using Dampers
摘要
Abstract
The relative oscillation between the strands of the suspension bridge hangers could be effec-tively mitigated by means of rigid spacers,but the hanger-spacer system may experience overall transla-tional or torsional vibrations.In this paper,based on a four-strand hanger of the Xihoumen Bridge,the ANSYS software was utilized to establish three kinds of computational models for the hanger-spacer-damp-er system,and a series of free vibration analyses were carried out to study the characteristics of the univer-sal curve for the torsional modes considering the effects of support stiffness and damper stiffness.The re-sults show that the universal curves are affected by the torsional modes,and a unified universal curve can-not be used for the design of the dampers for different torsional modes.The realizable maximum damping ratio for torsional mode and its corresponding damper coefficient reduce with the decrease of the support stiffness.However,the realizable maximum ratio for torsional mode decreases with the increase of thedamper stiffness,but its corresponding damper coefficient increases.关键词
悬索桥/吊索/阻尼器/振动控制/扭转模态Key words
suspension bridges/hangers/dampers/mitigation of vibration/torsional mode分类
建筑与水利引用本文复制引用
李寿英,王世峰,陈政清..阻尼器对悬索桥吊索扭转振动控制效果的数值研究∗[J].湖南大学学报（自然科学版）,2016,43(11):7-12,6.基金项目
国家自然科学基金资助项目(51578234),National Natural Science Foundation of China(51578234) （51578234）
国家重点基础研究发展计划(973计划)项目(2015CB057700) （973计划）
