风浪流耦合场下EIMD-斜拉桥的半主动控制方法
Semi-Active Control of EIMD-Cable-Stayed Bridge in Wind-Wave-Current Coupled Field
谢琛 1李志军 1郑强1
作者信息
- 1. 西安工业大学 建筑工程学院,西安 710021
- 折叠
摘要
为了减少斜拉桥过大的振动响应,本文根据新型电磁惯性质量阻尼器的优点,以双塔双索面钢箱梁斜拉桥模型为算例,提出基于新型电磁惯性质量阻尼器-斜拉桥半主动控制方法,并对其进行仿真分析,以主梁跨中节点的动力响应特性为控制目标,验证了文中方法的有效性.研究结果表明:相较于线性二次型调节器的主动控制方法,文中的半主动控制方法的斜拉桥位移控振率为 77.3%,加速度控振率为 64.3%,控制系统的外部能量需求有所降低,阻尼系数控制在由新型电磁惯性质量阻尼器提供的合理范围内,能实现更优的控制效果.文中方法可为斜拉桥在复杂环境下的系统控制提供理论参考.
Abstract
In order to reduce the excessive vibration response of cable-stayed bridges,this paper proposes a semi-active control method based on the the advantages of new electromagnetic inertia mass damper(EIMD).The double tower and double cable plane steel box girder cable-stayed bridge model is taken as an example.Simulation analysis is made to verify the effectiveness of the proposed method with the dynamic response characteristics of the mid span node of the main beam as the control target.The results show that compared to the active control method using linear quadratic regulators,by the semi-active control method,the displacement control vibration rate and the acceleration control vibration rate of the cable-stayed bridge are 77.3%and 64.3%,respectively.The demand of the control system for external energy is reduced,and the damping coefficient is controlled within a reasonable range provided by the new electromagnetic inertial mass damper.Better results are achieved by the control method,which can provide theoretical reference for the system control of cable-stayed bridges in complex environments.
关键词
大跨斜拉桥/风-浪-流耦合作用/电磁惯性质量阻尼器/半主动控制Key words
long-span cable-stayed bridge/coupling of wind-wave-current/electromagnetic inertial mass damper/semi-active control引用本文复制引用
基金项目
陕西省重点研发计划(2024GX-YBXM-235)
西安工业大学教学改革研究重点项目(22JGZ06)
出版年
2024
NETL
NSTL
万方数据