明挖法管线上穿施工对邻近地铁结构的变形影响分析

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【摘 要】:为了研究地铁保护区内新建项目的可靠性及对既有地铁结构的影响程度,以天津市新建电力管线工程侧穿邻近既有地铁项目为例,通过有限元数值模拟,计算管线沟槽开挖及铺设回填过程对地铁竖向位移的影响,总结了地铁变形规律。
【关键词】:明挖;沟槽;管线;地铁;变形
【中图分类号】:TU753 【文献标志码】:C 【文章编号】:1008-3197(2023)02-34-04
【DOI编码】:10.3969/j.issn.1008-3197.2023.02.008
Analysis of the Deformation Influence of Cut and Cover Method Construction
on the Adjacent Subway Structure
WANG Yixuan
(China Railway Shanghai DesignInstitute Group Corporation Limited,Tianjin 300073,China)
【Abstract】:In order to study the reliability of the new project in the subway protection area and its impact on the existing subway structure, the paper takes the side crossing of the new power pipeline project near the existing subway project in Tianjin as an example,calculates the influence of tube trench excavation and backfilling on vertical displacement of subway by finite element numerical simulation, summarizes subway deformation law.
【Key words】:cut and cover; trench; tube; subway; deformation
城市交通线网密集、设施复杂,在有限的城市空间内各类市政项目会交错布设,尤其管线布设时需要大量地下空间且遍布城市各处,往往会影响到既有地下结构如地铁车站、区间隧道等的安全稳定。(剩余3235字)