[1]郭宏超,李炎隆,王凯励,等.大跨度钢连廊人致激励下MTMD减振控制[J].自然灾害学报,2020,29(03):145-152.[doi:10.13577/j.jnd.2020.0316]
 GUO Hongchao,LI Yanlong,WANG Kaili,et al.MTMD vibration reduction control of large span steel corridor under the human-induced excitation[J].,2020,29(03):145-152.[doi:10.13577/j.jnd.2020.0316]
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大跨度钢连廊人致激励下MTMD减振控制
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
29
期数:
2020年03期
页码:
145-152
栏目:
出版日期:
2020-06-28

文章信息/Info

Title:
MTMD vibration reduction control of large span steel corridor under the human-induced excitation
作者:
郭宏超 李炎隆 王凯励 田建勃
西安理工大学 土木建筑工程学院, 陕西 西安 710048
Author(s):
GUO Hongchao LI Yanlong WANG Kaili TIAN Jianbo
School of Civil Engineering and Architecture, Xi’an University of Technology, Xi’an 710048, china
关键词:
钢连廊人致激励振动响应舒适度多重调谐质量阻尼器
Keywords:
steel-corridorhuman-induced vibrationvibration responsecomfortable degreemultiple tuned mass dampers
分类号:
TU393.3TU393X9
DOI:
10.13577/j.jnd.2020.0316
摘要:
连廊作为人流量较大的公共通行区,跨度较大时容易发生舒适性问题,因此有必要采取减振措施来控制由于人行走激励产生的过量振动,改善结构的使用功能。文章对西安站东配楼45 m跨度钢桁架连廊进行人致振动响应计算,得出了结构在正常使用时各工况下的加速度响应情况,根据调谐质量阻尼器的减振原理设计出单频率及多频率的减振装置进行减振控制,并将结果进行对比。结果表明,连廊人致激励下的加速度响应超过舒适度限值,利用单频率TMD(Tuned Mass Damper)系统可以有效改善结构的舒适性能,减振率达81.2%,但控制频带较窄,存在去谐效应,采用多频率MTMD(Multiple TMDs)系统在保证减振效果的同时可以扩大减振频带宽度,具有更强的鲁棒性。
Abstract:
As a public passage area with a large population flow, the corridor is easy to cause comfort problems when the span is larger. Therefore, it is necessary to take vibration reduction measures to control the excessive vibration generated by the human walking excitation and improve the function of the structure. In this paper, the human-induced vibration response of a 45-meter span steel truss corridor is calculated, the tuned mass damper is adopted for suppressing the vibration and the results have been compared. The results show that the acceleration response of the corridor under the human-induced vibration exceeds the comfort limit. The single-frequency TMD(Tuned Mass Damper) system can effectively improve the comfort performance of the structure. The vibration reduction radio is 81.2%, but the control band is narrow and there is detuning effect. The multi-frequency MTMD(Multiple TMDs) system can increase the damping band width while ensuring the vibration damping effect, and has stronger robustness.

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备注/Memo

备注/Memo:
收稿日期:2019-06-24;改回日期:2019-11-02。
基金项目:国家自然科学基金项目(51978571);陕西省教育厅重点实验室科学研究计划项目(18JS072);陕西省科技厅自然科学基础研究计划项目(2018JM5006);铁一院科学研究计划项目(院科16-59-01)
作者简介:郭宏超(1981-),男,副教授,博士,从事钢结构及结构抗震方面研究工作.E-mail:ghc-1209@163.com
通讯作者:李炎隆(1980-),男,教授,博士,从事水工结构数值仿真研究工
更新日期/Last Update: 1900-01-01