大跨度曲线组合结构人行天桥设计与振动特性分析

周萌; 王琳; 薛准; 魏晓晨; 高劲洋; 张屹垚; 许立言; 樊健生

doi:10.13204/j.gyjzG21070117

大跨度曲线组合结构人行天桥设计与振动特性分析

doi: 10.13204/j.gyjzG21070117

周萌^1,2,3,
王琳^2,3,
薛准^2,3,
魏晓晨²,
高劲洋²,
张屹垚⁴,
许立言^4, ,,
樊健生²

1. 中冶建筑研究总院有限公司, 北京 100088;
2. 清华大学, 北京 100084;
3. 珠海深圳清华大学研究员创新中心, 广东珠海 519080;
4. 北京航空航天大学交通科学与工程学院, 北京 100191

基金项目:

国家自然科学基金项目(51878379)。

详细信息

作者简介:
周萌,男,1991年出生,博士后。

通讯作者:
许立言,男,1990年出生,副教授,xuliyan@buaa.edu.cn。

计量
- 文章访问数: 148
- HTML全文浏览量: 26
- PDF下载量: 6
- 被引次数: 0
出版历程
- 收稿日期: 2021-07-01
- 网络出版日期: 2022-07-23
- 刊出日期: 2022-07-23

Design and Vibration Characteristics Analysis of Long-Span Curved Composite Pedestrian Bridge

1. Central Research Institute of Building and Construction Co., Ltd., MCC Group, Beijing 100088, China;
2. Tsinghua University, Beijing 100084, China;
3. Tsinghua Innovation Center in Zhuhai, Zhuhai 519080, China;
4. School of Transportation Science and Engineering, Beihang University, Beijing 100191, China

摘要

摘要: 以珠海市情侣路香炉湾城市阳台项目为背景,对大跨度曲线钢-混凝土组合结构人行天桥进行分析与设计,介绍了异型复杂人行桥采用多重调谐质量阻尼器(MTMD)进行人致振动响应控制的方法。首先利用通用有限元软件ANSYS,建立了全桥空间精细化有限元模型,然后合理设计全桥的施工工序并在有限元程序中定义了相应施工阶段,分析了组合桥在施工全过程及正常运营阶段的受力性能。采用避开敏感频率和限制结构动力响应的方法对人行天桥进行了舒适度分析,并按照国内外规范对结构人行舒适度进行评估,进而提出了增设多重调谐质量阻尼器进行人致振动控制的方案。结果表明:设置MTMD可有效控制曲线人行桥结构的人致竖向振动响应。
- 大跨度曲线人行天桥 /
- 施工阶段分析 /
- 振动舒适度 /
- 多重调谐质量阻尼器
Abstract: Based on the City Balcony project of Xiangluwan on conples street of Zhuhai City, the analysis and design of long-span curved steel-concrete composite pedestrian bridge were carried out. The human-induced vibration control method of irregular complex pedestrian bridge using multiple tuned mass dampers (MTMD) was introduced. Firstly, the refined finite element model of the whole bridge was established by using the general finite element software ANSYS. Then the construction process of the whole bridge was reasonably designed and the corresponding construction stage was defined in the finite element program to analyze the mechanical properties of the composite bridge during the whole construction process and the normal operation stage. The comfort of pedestrian bridge was analyzed by avoiding the sensitive frequency and limiting the dynamic response of the structure, and the comfort degree of the structure was evaluated according to the domestic and foreign specifications. Finally, a scheme of installing multiple tuned mass dampers for human-induced vibration control was proposed. The results showed that MTMD could effectively control the vertical vibration response of curved pedestrian bridge structure.
- long-span curved pedestrian /
- construction stage analysis /
- vibration comfort /
- MTMD

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