钢结构登机桥的竖向TMD减振控制  

Study on TMD Vertical Vibration Control of Steel Aerobridge

作　　者：丁孙玮[1] 钱峰[1] 徐斌[1] 周红卫[1] 

机构地区：[1]上海材料研究所,上海200437

出　　处：《工程抗震与加固改造》2013年第3期67-70,共4页Earthquake Resistant Engineering and Retrofitting

基　　金：上海市科委资助项目(10dz2252000)

摘　　要：当钢结构登机桥跨度较大时,其竖向自振频率接近人行走或者跑动的频率,容易产生共振;此时,竖向加速度将超过人体舒适度极限,给登机者心理上造成恐慌。采用调谐质量阻尼器(TMD)来达到减少登机桥的竖向振动反应将是一个很好的办法。本文简单介绍了行人载荷模型,并结合一座40m跨钢结构登机桥实例,采用SAP2000有限元软件进行了竖向TMD减振控制计算;采用TMD后,登机桥的最大加速度大幅减小,满足了舒适度的要求。结果表明,TMD是钢结构登机桥竖向舒适度控制的有效手段,望其能对今后类似工程提供参考。The vertical vibration frequency of long-span aerobridge is close to the normal pedestrian＇ s frequency, so the resonance is easy to happen. The vertical acceleration might exceed the limit of human comfort. It will be a good method to using tuned mass dampers to reduce the vertical vibration of aerobridge. In this paper, the model of pedestrian loads is introduced briefly. Based on a 40m steel aerobridge example, participate in vibration comfort control of TMD is proceeded. The results indicate that TMD can greatly reduce the acceleration of aerobridge, which will give some references for similar projects.

关 键 词：登机桥 调谐质量阻尼器 减振控制 舒适度 

分 类 号：U441.3[建筑科学—桥梁与隧道工程]