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1、-AbstractInthecurrentChina'srapideconomicgrowthinthebackdrop,thecountry
enteredaperiodofgreatdevelopmentprojectconstruction。Especiallyin
infrastructureconstructionhasbeenleapsandbounds:highway,railway,bridges,
subwayconstructioninstrong。Atthesametimeaccompaniedbytheexcavationto
keeptheb
2、ig,deepdevelopment,thelandspacetobecomeatrendtheseyears。
Excavationandvariousalsomoreandmoreattentionandresearch。Asthepit
systematicandcomplexity,coupledwiththeimproperdesign,construction,
engineeringaccidentsoftenoccuraround。Accordingtothehighfrequencystatistics,
relevantdepartmentspit
3、accidentoccurred,thetotalnumberofpit1/4。Onceapit
accident,oftenbringsaparticularlylargeimpact。SuchasthefamousQinghaixining
jiahaoPlazaBuilding4pitslopecollapse,resultinginmanycasualtiesandsignificant
propertydamage。Becauseofthis,securityisveryimportantpit。Butontheotherhand,
thankstothed
4、esignofarelativelyconservativemanner,resultinginawasteof
excavationisalsoextremelyseriousphenomenon。Astoensurethesafetyofthe
temporarysupportstructuredesignedtobepermanentsupportstructuretype,although
solvethesecurityproblem,butitisdifficulttoachieveeconomies。Sogoin-depth
engineeringstu
5、dyhowtoachievemoreeffectiveexcavationworthit。Alotofsupportintheformofretainingstructureexcavation,themaintypeof
supportandreinforcementdividedintotwocategories。Successfulexcavationornot,
playsakeysupportingroleintheway。Astheexcavationcoversawidedemanding
decidetheimportanceofsupportingp
6、rogramsofchoice。Therefore,supporting
programsdesignedtoinfluencevariousfactorsintoaccount,themaximumlimitto
meetvariousdemands。Thepurposeofthisstudy：Althoughmanystudiesre-excavationworksathome
andabroad,butthereisthephenomenonoftouchwiththetimes。Existingtheoriescan
notmeettherequirement
7、softherapiddevelopmentoftheconstructionpit。Themain
supportprogramistomeetthesecurity,economic,basicrequirementsof
environmentalprotection,whilemeetingtheneedsofdifferentworkingconditions。
Hencetheneedforamorerationalandeffectiveelectionexcellentwaytoachievethis
requirement。Them
