盾构法施工的车站通道出入口建筑物体系的地震响应分析
袁勇1,2黎若寒1陈鸿3李新星3
Analysis of Shield Method Construction Station-Passage-Entry/Exit Building System Seismic Response
YUAN YongLI RuohanCHEN HongLI Xinxing
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作者信息:1.1. 同济大学地下建筑与工程系， 200092， 上海；
2.2 .同济大学土木工程防灾国家重点实验室，200092， 上海；
3.3. 上海市隧道工程轨道交通设计研究院， 200235， 上海
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Affiliation:Department of Geotechnical Engineering, Tongji University, 200092, Shanghai, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2022.08.046
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中图分类号/CLCN:U452； TU452
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栏目/Col:其他
摘要:
为了研究盾构法施工的车站及其体系在地震作用下的薄弱环节及最不利位置，建立了车站通道出入口建筑物体系的地层结构三维精细化有限元数值模型，研究了盾构车站连接通道出入口建筑物的地震动力响应规律。通过输入沿车站横向和纵向的设防地震动作用时程，重点考虑通道车站连接段的地震动力响应，研究了结构体系的应力、损伤和变形模式。研究结果表明：车站通道出入口建筑物体系的最不利位置为连接通道与车站的连接部位，以及连接通道与出入口建筑物的连接部位；地震纵向输入相比于横向输入更为不利；车站通道出入口建筑物体系变形模式主要取决于出入口建筑物与车站之间非一致的变形，车站在横向地震作用下呈现开口处的挤压变形，在纵向地震作用下呈现扭转变形。
Abstracts:
To investigate the weak link and most unfavored position of shield method construction station and the system under seismic motion, a three-dimensional refined finite element numerical model of station-passage-entry/exit Building system is established.The seismic dynamic response law of the system is studied. By inputting the transverse and longitudinal fortification seismic motion time-history and emphatically considering the seismic dynamic response of passage-station section, the stress, damage and deformation patterns of the structural system are investigated. Results show that the most unfavored locations of the station-passage-entry/exit Building system are the connecting part between the passage and the station as well as that between the passage and the entry/exit building. Seismic motion input is more harmful to the structural system in longitudinal direction than in transverse direction. The deformation pattern of the station-passage-entry/exit Building system is mainly determined by the non-uniform deformation between the entry/exit building and the station. The station exhibits squeeze deformation at the openings under transverse seismic action and torsional deformation under longitudinal seismic action.
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