地鐵車站斜井爆破開挖對(duì)側(cè)穿建筑物穩(wěn)定性的影響分析

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中圖分類號(hào)：U455.6 文獻(xiàn)標(biāo)志碼：A 文章編號(hào)：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

在進(jìn)行地鐵隧道的爆破施工時(shí)，由于炸藥能量的瞬時(shí)釋放，其所產(chǎn)生的巨大沖擊力將穿透周邊的巖石層，并對(duì)鄰近的建筑物造成巨大的振動(dòng)擾動(dòng)，一旦這種擾動(dòng)大于一定的閾值，就可能導(dǎo)致建筑的坍塌和損毀。（剩余3924字）