2022·12·BuildingConstruction3030某地铁隧道病害治理施工工艺及环境影响评估金易上海公路桥梁（集团）有限公司上海200433摘要：针对上海虹桥地区某隧道的沉降问题，对病害成因进行分析后，通过桥板结构将地面荷载传递到深部持力层以减小隧道沉降。比较了不同沉桩工法的优劣，阐述了免共振振动沉桩工法的可行性与工艺流程。通过隧道内多个测点的监测，结果表明：振动沉桩对隧道垂直沉降及水平位移影响不大，绝大部分测点采集的数据满足设计要求；但该工艺对管径的影响十分明显，77%的断面管径缩小了0～20mm，20%的断面管径缩小值超过20mm，说明应用该工法时必须注意周围构筑物管径收敛的容许情况。关键词：隧道工程；变形控制；振沉桩；影响监测中图分类号：U25文献标志码：A文章编号：1004-1001(2022)12-3030-04DOI：10.14144/j.cnki.jzsg.2022.12.061ConstructionTechnologyandEnvironmentalImpactAssessmentofDiseaseTreatmentinOneSubwayTunnelJINYiShanghaiHighwayandBridge(Group)Co.,Ltd.,Shanghai200433,ChinaAbstract:AimingatthesettlementproblemofatunnelinHongqiaoareaofShanghai,afteranalyzingthecauseofthedisease,thegroundloadistransferredtothedeepbearingstratumthroughthebridgeslabstructuretoreducethetunnelsettlement.Theadvantagesanddisadvantagesofdifferentsinkingpileconstructionmethodsarecompared,andthefeasibilityandtechnologicalprocessofresonance-freevibro-sinkingpileconstructionmethodisexpounded.Throughthemonitoringofseveralmeasuringpointsinthetunnel,theresultsshowthatthevibro-sinkingpilehaslittleinfluenceontheverticalsettlementandhorizontaldisplacementofthetunnel,andthedatacollectedbymostmeasuringpointsmeetthedesignrequirements;however,theinfluenceofthisprocessonthepipediameterisveryobvious,thediameterof77%sectionpipesisreducedby0~20mm,andthediameterof20%sectionpipeisreducedbymorethan20mm,whichindicatesthatattentionmustbepaidtotheallowableconditionofpipediameterconvergenceofsurroundingstructureswhenapplyingthismethod.Keywords:tunnelingworks;deformationcontrol;vibro-sinkingpile;impactmonitoring沉降问题，制定并实施了修筑桥板结构传递上部荷载以控制隧道变形的治理方案，并对施工过程中隧道所受影响进行了监测。本文将就本治理项目的方案...
