鄂东长江大桥风致振动三向连续型控制试验研究  

Study on the Three-dimensional Continuous Control of Wind-induced Vibration of Edong Yangtze River Bridge

作　　者：徐家云[1] 王礼杭 陈思维[2] 毕海峰[1] 刘如意[1] 

机构地区：[1]武汉理工大学道路桥梁与结构工程湖北省重点试验室,武汉430070 [2]武汉理工大学土木工程与建筑学院,武汉430070

出　　处：《武汉理工大学学报》2015年第1期81-87,共7页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(51378500;50878172)

摘　　要：以鄂东长江大桥为研究对象,通过风洞试验,获得桥梁理论所需的三分力系数及其导数数值和18个气动导数;采用三向连续型控制器对桥梁风致竖向,横向及扭转振动进行控制。结果表明:三向连续型控制器可明显减小桥梁的竖向、横向及扭转振动,并能明显提高桥梁的颤振临界风速。Taken the Edong Yangtze river bridge as study object, through the wind tunnel test, three component coef- ficients and their derivatives values and eighteen aerodynamic derivatives were acquired. A three-dimensional continuous controller which can control the vertical, horizontal, and torsional vibrations of the bridge structures was proposed. The wind tunnel test results show that three-dimensional continuous controller can significantly reduce the vertical, horizontal, and torsional vibrations of the bridge structure and significantly increase the flutter critical wind speed of the bridge.

关 键 词：桥梁风致振动 风洞试验 竖向振动 横向振动 颤振临界风速 

分 类 号：O441.3[理学—电磁学]