文档介绍：中国图书分类号: U44 国际图书分类号: 工学硕士学位论文人行桥振动舒适度的设计与评价理论研究 硕士研究生: 陈璞 导师: 黄侨教授 申请学位: 工学硕士学科、专业: 桥梁与隧道工程所在单位: 交通科学与工程学院答辩日期: 2008 年6 月授予学位单位: 哈尔滨工业大学 Classified Index : U44 .: A Dissertation for the Degree of M. Eng. THEORETICAL STUDY ON VIBRATION SERVICEABILITY DESIGN AND EVALUATION OF FOOTBRIDGE Candidate : Chen Pu Supervisor : Prof. Huang Qiao Academic Degree Applied for : Master of Engineering Specialty : Bridge and Tunnel Engineering Date of Defence : June, 2008 Degree-Conferring-Institution : : Harbin Institute of Technology 哈尔滨工业大学工学硕士学位论文- I - 摘要 近年来,研究人群的不同活动对结构的影响正在引起国际结构工程界的关注。人们逐渐意识到在一些人群活动较为密集的结构如人行桥中出现的人群不应该只看作结构的静荷载,在人群的不同活动下, 结构的动力效应十分明显。人行桥由行人激起的振动一般不会导致结构本身的破坏,但会影响到桥上行人的舒适性。近期许多柔性人行桥出现了人行荷载导致的大幅度振动问题,这表明在结构设计中必须考虑振动舒适度的要求。人行桥振动舒适度问题是本文的研究重点,总的研究工作分成四部分: 首先,系统回顾了关于人行荷载的己有研究成果,介绍了步行激励荷载的时域模型和频域模型;对各种规范提出的计算模型进行了介绍和比较,在此基础上,推导并建立了单人和人群过桥的运动方程,并提出了简化实用方法。建立了基于烦恼率模型的人行桥振动舒适度评价方法, 此评价方法可以综合考虑多频率、多振型的情况;最后,介绍了采用 TMD 抑制人行桥振动的理论,并且讨论了不同 MTMD 优化设计参数对人行桥振动控制的影响。关键词 人行桥;人致振动;舒适度评价;调谐质量阻尼器哈尔滨工业大学工学硕士学位论文- II - Abstract Recent years, the research about how the act ivities of different kinds of crowd influence the structural response is attracting more attentions in the fields of international civil engine ering. People gradually reali ze that the crowd in some structures such as footbridges where the activities of crowd are more severe can not be seen as static loads. Under these different acti vities, the dynamic phenomenon in the st ructure is rather obvious. The excitation of a footbridge by a pedestrian passing over it can be unpleasant for a person walking or standing on the bridge, but usually no t destructive for the structure itself. Recent excessive pedestrian-induced vibratio ns of many slender footbrid ges have especially shown that vibration servic eability limit states are very important requirements in any structural design. The main focus of this thesis wa s on the vibration serviceability of footbridge. The