人行天桥的MTMD减振控制研究  

Research on Vibration Control for a Pedestrian Bridge Applied to MTMD

作　　者：苏冠兴[1] 张志强[1] 李爱群[1] 

机构地区：[1]东南大学土木工程学院,南京210096

出　　处：《特种结构》2010年第1期71-75,共5页Special Structures

基　　金：国家支撑计划<既有建筑功能提升改造关键技术研究>(2006BAJ03A04)

摘　　要：本文采用MTMD对某大跨人行天桥进行了消能减振分析与设计。分析表明,天桥在人行荷载作用下有明显的共振响应,安装MTMD后,减振效果明显,在共振工况下减振率达66%,减少了天桥的共振响应,达到了人体舒适度指标。采用MTMD消能减震技术减少天桥振动反应是一种经济、实用又不影响美观的方法。In this paper, the vibration energy dissipation design is performed for a pedestrian bridge with Multiple Tuned Mass Damper（MTMD）. The analysis results proved that the bridge has obvious resonance response under pedestrian loads. Installation of MTMD effectively reduces the vibration response with 66% reduction under the circumstance of resonance. Resonance response is avoided and the target of human comfort is reached after installating the MTMD. The MTMD energy dissipation technology is an economical, practical way to reduce the vibration response of pedestrian bridge without affecting the appearance.

关 键 词：人行天桥 效能减振 MTMD 共振 舒适度评价 

分 类 号：U441.3[建筑科学—桥梁与隧道工程]