上跨既有地铁盾构区间地铁工程结构变形控制技术

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中图分类号：U458.1 文献标志码：A 文章编号：1005-8249（2025）04-0090-05

DOI：10.19860/j.cnki.issn1005-8249.2025.04.017

WANG Ruiqiang，GUO Binbin，LIANG Tao，HE Yi，FAN Xiaoye

The Third Construction Co.，Ltd of China Construction Eighth Engineering Division，Nanjing 2100，China

Abstract：Takinganewlyconstructedsubwayas theresearchobject，thisstudyinvestigatesthedeformationcontroltechnologyof the subwayenginering structurethat spansoverthe existing subwayshieldtunnel section.Optimize the synchronous grouting presure and grouting volumeintheshield tunneling constructionparametersofthetestsection，designasecondarygrouting constructionmethod tocompletethedeformationcontrolofthesubwayengineringstructureintheshieldtunnelingsectiontest section；Basedonthemonitoringresults，adjusttheparametersof shieldtunelingconstruction，design polyurethaneisolation rings，adcompletethedeformationcontrolofthesubwayenginering structureintheshieldtunnelingsection.Theresultssowed that the maximum deformation of the arch crown was 1.2 and 0.8mm in the experimental section and the crossing section， respectively.Inthecrosingsection，themaximumdeformationof theupwardanddownward tracksofthetrackstructurereaied stable at 1.5 and1.47 mm，respectively.This technology effctively controlled the deformation of the shield tunneling section subway engineering structure.

Key words：crossngabove existing subway；shieldzone；subwayengineering；structural deformation；controltechnology; synchronous grouting

0 引言

随着城市的发展，地铁已成为人们出行不可或缺的交通工具之一[1]。（剩余4868字）