大跨度Y形柱地铁车站结构地震反应研究

陶连金; 刘春晓; 边金; 吴秉林; 李积栋; 许有俊

doi:10.6052/0459-1879-16-346

大跨度Y形柱地铁车站结构地震反应研究

doi: 10.6052/0459-1879-16-346

陶连金^*, ,,
刘春晓^*,
边金^†,
吴秉林^**,
李积栋^††,
许有俊^***

*.
北京工业大学土木工程学院城市与工程安全减灾省部共建教育部重点试验室, 北京 100124
†.
广东海洋大学工程学院, 广东湛江 524088
**.
舟山市规划建筑设计研究院, 浙江舟山 316000
††.
中国建筑总公司技术中心, 北京 101300
***.
内蒙古科技大学建筑与土木工程学院, 内蒙古包头 014010

基金项目:

国家自然科学基金 41272337，41572276

北京市自然科学基金委员会 L140004

北京市教育委员会科技计划重点项目 KZ200910005009

北京市博士后工作经费 2013ZZ-01

长江学者和创新团队发展计划 51421005

详细信息

通讯作者:
陶连金,教授,主要研究方向:岩土与地下工程.E-mail:ljtao@bjut.edu.cn

中图分类号: TU311.3
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- 文章访问数: 964
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- 被引次数: 0
出版历程
- 收稿日期: 2016-11-25
- 修回日期: 2016-11-28
- 网络出版日期: 2016-12-05
- 刊出日期: 2017-01-18

SEISMIC RESPONSE OF SUBWAY STATION WITH LARGE SPAN AND Y SHAPED COLUMN

Tao Lianjin^{*
, ,},
Liu Chunxiao^*,
Bian Jiny^†,
Wu Binglin^**,
Li Jidongyy^††,
Xu Youjun^***

*.
Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing 100124, China
†.
Engineering College of Guangdong Ocean University, Zhanjiang 524088, Guangdong, China
**.
Zhoushan Planning & Pattern Institute, Zhoushan 316000, Zhejiang, China
††.
China National Construction Corporation Technology Center, Beijing 101300, China
***.
School of Architecture & Civil Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China

摘要

摘要: 随着地铁建设的发展，出现了一种新型的结构形式-大跨度Y形柱地铁车站结构，与现有的地铁车站结构完全不同，其空间高大宽敞，环境舒适.为研究该新型地铁车站结构的抗震性能，以北京地铁6号线新华大街站为工程背景，使用FLAC^3D软件建立土与地下结构三维有限差分动力模型，模拟其在新华大街人工波作用下的响应过程，重点分析了车站Y形柱和侧墙的加速度、位移、应变的规律，并与试验结果进行了对比分析，结果表明：数值模拟与振动台试验结果基本一致，体现出了相似的规律性；Y形柱加速度最大位置出现于柱顶端稍下位置，并非于柱顶端；Y形柱分叉位置处应变出现突变，此点相对于柱底的位移最大，且变化率较大，是抗震设计中需要加强的部位；Y形柱加速度、位移变化都会大于侧墙.上述研究成果对提高该类地铁车站结构抗震性能的认识及抗震设计水平提供了合理的参考与指导.
- Y形柱 /
- 地铁车站 /
- 振动台试验 /
- 地震反应
Abstract: Along with the development of subway construction, a new type of structure with long span and Y shaped column comes up.It is different from the existing subway station structure, the space is tall and spacious, which shows a comfortable environment.In order to study the seismic performance of subway station structure with this new type, taking Xinhua Street station of the Beijing Metro Line 6 as engineering background, FLAC^3D was used to build the soilunderground structure dynamic model of three-dimensional finite difference to simulate the response process under the Xinhua Street artificial seismic wave excitation.Emphasis is put on the analysis of the law of acceleration, displacement and strain of both Y shaped column and side wall of the station.The numerical results are also compared with the shaking table test.The results show that the numerical results are basically identical with the shaking table test, which reflects the similar structure response.The maximum acceleration of Y shaped column occurred at the position just a little down from the top of the column, not at the top.Strain changes suddenly at the bifurcation position of Y shaped column, where this position also has the largest response displacement relative to the bottom of column and with abrupt change, so this is the part to be reinforced in aseismic design.The acceleration and change of displacement of Y shaped column are both larger than side wall.The results above may provide reasonable reference and guidance to improve the seismic performance and seismic design for similar subway station structure.
- Y shaped column /
- subway station /
- shaking table test /
- seismic response

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图 1 车站效果图

Figure 1. Design sketch of station

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图 2 车站结构横断面尺寸

Figure 2. Station cross-sectional dimension

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图 3 振动台加载方向及车站位置

Figure 3. Loading-direction of shaking table and location of station

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图 4 传感器与加速度计布置

Figure 4. Layout of gauges and accelerometers

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图 5 FLAC$^{\rm 3D}$计算模型

Figure 5. Calculation model of FLAC$^{\rm 3D}$

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图 6 新华大街站人工波加速度时程曲线

Figure 6. Acceleration time-histories of Xinhua Street Station

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图 7 监测点布置

Figure 7. Layout of monitoring points of model

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图 8 侧墙加速度放大系数

Figure 8. Acceleration amplification factor of sidewall

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图 9 Y形柱测点加速度放大系数

Figure 9. Acceleration amplification factor of Y shaped column

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图 10 侧墙水平响应位移幅值

Figure 10. Horizontal response displacement amplitude of sidewall

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图 11 侧墙相对层间位移

Figure 11. Relative displacement between the layers of sidewall

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图 12 不同工况下Y形柱测点相对位移值

Figure 12. Relative displacement between the layers of Y shaped column with different conditions

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图 13 Y形柱应变曲线图

Figure 13. Structure strain response at measuring point of the Y shaped column

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表 1 土层物理力学性质参数

Table 1. Parameters of soils

表 2 车站结构物理力学参数

Table 2. Parameters of station structure

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