地铁车站斜井爆破开挖对侧穿建筑物稳定性的影响分析

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中图分类号：U455.6 文献标志码：A 文章编号：2095-2945（2025）19-0056-04

Abstract：During theblastingandexcavationofsubwaytunnels，adjacentbuildingswillbefrequentlydisturbedbyblasting vibrationwaves.Whenthisdisturbanceexcedsacertainthreshold，thebuildingwillbedamaged.Basedontheblasting excavationoftheinclinedshaftatZhenjiangRoad StationofQingdaoMetroLine5，andbasedonthenumericalanalysismethod ofthefiniteelementsoftwareLS-DYA，theblastingexcavationprocessoftheinclinedshaftcyclefotageissimulatedandthe impactofblastingexcavationonthestabilityofside-penetratingbuildingsisanalyzed.Theresultsshowthatthemaximum vibrationvelocityofbuildingpilesisgreaterthanthemaximumvibrationvelocityofplatesandcolumnsateverymoment，and themaximumvaluesofvibrationveloities ineachdirectionandcombinedvibrationvelocitiesarelowerthantherequirementsof thespecification；thevibrationvelocityintheexcavationdirectionismostobviouslyafectedbytheblastcenterdistaneandis thelargestamongthepeakvibrationvelocitiesineachdirection;the"voidffect"onlysignificantlyamplifiestheblasting vibrationvelocitywithinacertaindistanceafterexcavation；duringon-sitemonitoringatentionshouldbepaidtothepositionof thepiletopandplateedge.Theresearchresultscanprovidereferenceforfuturesafetyasesmentofbuildingsadjacentto subway tunnel blasting construction.

Keywords： vibration effects; LS-DYNA; inclined tunnel; cyclic footage;side-penetrating buildings

在进行地铁隧道的爆破施工时，由于炸药能量的瞬时释放，其所产生的巨大冲击力将穿透周边的岩石层，并对邻近的建筑物造成巨大的振动扰动，一旦这种扰动大于一定的阈值，就可能导致建筑的坍塌和损毁。（剩余3924字）