深基坑岛式与盆式土方开挖方法相结合的实际应用-张大

··2012-12-26张大张永泽300459在建筑工程中，有内支撑的基坑开挖应根据基坑的面积、深度、周边环境、内支撑形式等因素采取不同的开挖方法，大多采用岛式开挖、盆式开挖、分层分块的开挖方式。深基坑岛式与盆式相结合的土方开挖方法是基坑竖向各分层土方采用岛式和盆式进行交替开挖的一种组合方式。以某工程深基坑土方开挖为实例，对岛式与盆式土方开挖相结合的方法做简要介绍。基坑开挖岛式开挖盆式开挖TV551．4+2A1009-4539201303-0099-04PracticalApplicationoftheCombinationofIslandExcavationwithBasinExcavationMethodsinDeepFoundationPitZhangDaZhangYongzeChinaRailway22ndBureauGroupCo．Ltd．Tianjin300459ChinaAbstractInengineeringconstructionexcavationmethodsvarytothefactorsasareadepthsurroundingsituationandin-nersupportingformofthefoundationpitamongwhichislandexcavationbasinexcavationlayeredandblockedexcavationaremostlytaken．Theexcavationmethodofcombiningislandexcavationwithbasinexcavationofdeepfoundationpitisancombinationmethodofthefoundationpitexcavationwithalternativeuseofislandexcavationwithbasinexcavationalongtheverticaldimension．Finallybasedonengineeringpracticethecombinationmethodofislandexcavationwithbasinexcava-tionisintroducedbriefly．Keywordsfoundationpitexcavationislandexcavationbasinexcavation1、。。。。、、、、、、、、。。299RAILWAYCONSTRUCTIONTECHNOLOGY20133··。2037210m2。2260m4600m211．30m55000m3。+。33．11。、。、、、。2、。3、。。4。5400mm×400mm30m。。3．2、、。、。“、、、、、”。3．2．18000m32m。2、8。－0．900m－2．900m300mm、。。1。1mm3．2．2－3．200m－8．400m。。430cm16m×8m－2．100m3cm．8。、。12。34。8－2．600m。1∶31∶4。2。2mm－8．400m。001RAILWAYCONSTRUCTIONTECHNOLOGY20133··。3．2．3。、、。－8．400m－12．200m1、2、34、545。500mm1∶31∶4。。3。341“、、、、、”“、、”。1。2、。3。420m。5。6、。7、。5、5．11500mm。250mm。33cm。4、。5。5．21。、、。。。2。、。。1∶31∶4。2。3101RAILWAYCONSTRUCTIONTECHNOLOGY20133··、。300mm×200mm。。。。4。、。5、。、。61、。2。1．M．2009檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪852－897．(上接第90页)5．222SVM1000TCM60CPG500/h0．40．40．4/h0．351．10．54/min8×430×420×4500m5/h2×53×52．5×52．5km11h40min18h50min15h30min5．333SVM1000TCM60CPG500111/1/02/21/2/2/22/22/26664441322001114442427256117SVM1000TCM60、CPG500、、、、。。201RAILWAYCONSTRUCTIONTECHNOLOGY20133