污染环境下地铁结构耐久性设计研究

2013－08－141980－。。[e-mail]。DOI10．13379/j．issn．1003-8825．2014．03．33周凯，李辉610031以北京地铁7号线工程化工站为依托，通过工程实例，运用理论分析、工程类比等多种方法，对污染环境下地铁结构的耐久性设计进行了分析研究，取得了相应的设计参数及结论，并采取相应的技术措施，取得了良好的工程效果。污染环境;地铁结构;耐久性;混凝土密实度;裂缝控制TU352.3B1003－8825201403－0156－050。100。。7。111.17。1。298.1m20.8m2。1.216.4～19.3m。7.66～15.93m15.5～26.14m。12cm1.350。、、、、。2。1.3.1·651·SubgradeEngineering20143174、、、。。Ⅶ－HGZ09SO2－4。1.3.2。ABC。BCA。1。1mg·L－1SO2－4Mg2+NH+4PHCO2/mg·L－1HCO－3/mmol·L－1Cl－/mg·L－1ABCⅦ－HGZ04187705407.721054Ⅶ－HGZ0913641＜0.0018507.069104Ⅶ－HGZ1622579＜0.00120007.2612628Ⅶ－HGZ21300145.100166966.6181449276Ⅶ－HGZ0918568＜0.0016687.5148116Ⅶ－HGZ165869＜0.00114787.512453Ⅶ－HGZ212224＜0.0012087.935471.3.3《》3Ⅳ－CⅣ－DⅣ－E。《》4L2L3。《》Cl－49276mg/L。《》3“”“Ⅴ－C”。Cl－SO2－4。2。。1①②③④⑤。2①、、②③、④。、、、。3《》、·751·、、。3.1C40。。C45·P1050mm40mm28DＲCM≤5×10－12m2/s2、3。2/mmIV－CIV－DIV－EV－CL2L3C45C50C45C45C504550404555《》《》328dDＲCM10－12m2/sDE≤7≤4《》56dDＲCM10－12m2/sL2L3≤5≤7《》、、18@100。。3.23.2.180m。4。41、2510、4。①②。。3.2.2、。Midas300m15°10°5°0°0.7。3～5。310°45°50°·851·SubgradeEngineering20143174C45·P1018@1000.2mm0.3mm5。5/°/kN·m－1/mm101850.36%18@1000.050.45%20@1000.0453700.36%18@1000.090.45%20@1000.0805560.36%18@1000.110.45%20@1000.103.2.310.06%。2C45·P100.36360～480kg/m3。3160mm30mm。43%～5%。3.2.41、。2。、15℃、20℃15℃。32850%14、2870%21。4。10℃。3.3CSACSA、、56。3.3.1CSA。3.3.21。2。3。4。5。CSA30kg/m3。4。。CSA。70CSA2001%2000。。5·951·。7、。1．7Z.2011.2．7—Ｒ.2011.3GB/T50476—2008S.2008.4TB10005—2010/J1167－2011S.2010.5CCES01—2004S．2005．2005.6.CSAJ．2009227－30.StudyonDurabilityDesignforMetroStructureinAPollutedEnvironmentZHOUKaiLIHuiChinaＲailwayEryuanEngineeringGroupCo．Ltd．Chengdu610031ChinaAbstractThispaperrelyingonthecasestudyinrelationtotheHuagongStationonBeijingMetroLine7studiedthedurabilitydesignforthemetrostructureinapollutedenvironmentbymeansoftheoreticalanalysisandengineeringanalogyandthenobtainedthecorrespondingdesignparametersandconclusion．Usingthecorrespondingtechnicalmeasuresthegoodengineeringeffectmaybereached．Keywordspollutedenvironmentmetrostructuredurabilityconcretecompactness檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿crackcontrol(上接第155页)ApplicationofStaticBlastingTechnologyinDemolitionofＲubbleConcreteＲetainingWallXIALongChinaＲailwayFirstGroupNo.5EngineeringCo．Ltd．Baoji721006ShanxiChinaAbstractStaticblastingisanidealbreakingmethodthatissafeeconomicandefficientinanon－dynamiteblastenvironmentwithoutanyvibrationnoiseflyingstonedustshockwaveharmfulgasortoxicant．InthedemolitionofretainingwallattheTurpanStationonYutianCoalDedicatedＲailwayLinestaticblastingwasused．Throughfieldpracticeandmanyteststhetechnicalcriticalparametersforthestaticblastingforrubbleconcreteretainingwallwereoptimizedanddeterminedthroughwhichboththeeffectofadversefactorssuchasflyingstonevibrationandnoiseontheoperationsafetyofthelineandthedisturbancetotheoperationofexistinglineandtheconstructioninthestationwerereducedthustoacceleratetheconstructionprogress．Keywordsdemolitionofretainingwallrubbleconcretestaticblastingsoundlessbreakingtechnicalparameterstest·061·SubgradeEngineering20143174