盾构近距离下穿既有车站影响分析及保护措施  

Influence Analysis and Protection Measures of Shield Undercrossing Existing Station in Short Distance

作　　者：李睿哲 LI Ruizhe(Zhengzhou Branch of China Railway Fifth Survey and Design Institute Group Co.,Ltd.,Zhengzhou 450000,Henan,China)

机构地区：[1]中铁第五勘察设计院集团有限公司郑州院,河南郑州450000

出　　处：《工程技术研究》2023年第4期43-45,共3页Engineering and Technological Research

摘　　要：新建地铁线路区间盾构隧道下穿既有运营车站时,近接施工会引起既有车站结构的沉降位移,影响既有站的结构及运营安全。文章以郑州地铁12号线盾构区间下穿既有5号线福塔东站为例,采用定性分析及数值模拟方法分析了新建盾构施工近距离下穿对既有车站结构的影响,并提出了对既有运营车站的保护措施,以保障此工程的顺利实施,相关经验可为类似工程的设计和施工提供可靠参考。When the shield tunnel of the new metro line interval passes under the existing operating station,the adjacent construction will cause the settlement displacement of the existing station structure,which will affect the structure and operation safety of the existing station.Taking the shield interval of Zhengzhou Metro Line 12 undercrossing the existing Zhongyuan Tower East Station of Line 5 as an example,this paper analyzes the influence of the new shield underpass construction in short distance on the existing station structure by qualitative analysis and numerical simulation,and puts forward the protection measures for the existing operating station to ensure the smooth implementation of the project.The relevant experience can provide reliable reference for the design and construction of similar projects.

关 键 词：盾构 下穿 数值模拟 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]