Dynamic performance of cable-stayed bridge tower with multi-stage pendulum mass damper under wind excitations——I:Theory

作     者：郭安薪 徐幼麟 李惠 

作者机构：School of Civil EngineeringHarbin Institute of Technology Harbin 150090 China Department of Civil and Structural Engineering The Hong Kong Polytechnic University Hung Hom Hong Kong China 

出 版 物：《Earthquake Engineering and Engineering Vibration》 (地震工程与工程振动（英文刊）)

年 卷 期：2007年第6卷第4期

页      面：295-306页

核心收录：

学科分类：081406[工学-桥梁与隧道工程] 08[工学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

基　　金：Area Strategic Development Program inStructural Control and Intelligent Building from The HongKong Polytechnic University  and National Natural SciencFoundation of China Under Grant No. 50408011 

主　　题：multi-stage pendulum mass damper cable-stayed bridge single column tower wind-induced vibration 

摘      要：In this paper, wind-induced vibration control of a single column tower of a cable-stayed bridge with a multi- stage pendulum mass damper （MSPMD） is investigated. Special attention is given to overcoming space limitations for installing the control device in the tower and the effect of varying natural frequency of the towers during construction. First, the finite element model of the bridge during its construction and the basic equation of motion of the MSPMD are introduced. The equation of motion of the bridge with the MSPMD under along-wind excitation is then established. Finally, a numerical simulation and parametric study are conducted to assess the effectiveness of the control system for reducing the wind-induced vibration of the bridge towers during construction. The numerical simulation results show that the MSPMD is practical and effective for reducing the along-wind response of the single column tower, can be installed in a small area of the tower, and complies with the time-variant characteristics of the bridge during its entire construction stage.