1、同濟(jì)大學(xué)土木工程學(xué)院碩士學(xué)位論文軟土超深基坑施工開(kāi)挖離心模型試驗(yàn)研究姓名：張海華申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：巖土工程指導(dǎo)教師：馬險(xiǎn)峰鄭宜楓20090301AbstractABSTRACTManydeepexcavationsofmetrostationstakeplaceinShanghmwitllthedevelopmentofurbanrailtranistconstructionSomefoundationpitexcavations

2、aremorethan20mdeepBecausetherearemorenewproblemsencounteredduetothedeeperexeavaton，itisnecessarytodosomeresearchonreactionstotheultradeepexcavationCombinedwiththeultra—deepexcavationinsoftgoundinShanghai，aseriesofcentrif

3、ugemodeltestssimulatingtheultradeepexcavatonarecarriedoutinTongjiUniversityNumericalanalysisismadeforanin—depthstudyinadditionAndanengineeringcaseisgivenoutforverificationofthetestandthenumericalmethodThemainworkisdescri

4、bedasbelow：Comparedwithothermethodsforsimulatingexcavationoncentrifuge，thewaythatstopingthecentrifuge，excavatingbyhandandstartingthemachine(SES)isproposedforthisstudyThedesignforthemodel，preparationforthetestandprocessof

5、thetestareexplainedindetailsCentrifugemodeltestsrevealthedeformationpropertyofulnadeepexcavationbydifferentparametersoffoundationpit，forexample，groundstratum，depthofexcavation，embeddeddepthofthediaphragmwallandSOonBymean

6、sofstudythedeformationofdiaphragmwall，settlementofgroundandthesoilpressurechangeduringexcavationaswellastherelatonshiopsbetweenthem，someresultsCanbeconcluded：thedeformationofdiaphragmwallshowtheeffectsofthedepthofexcavat

7、ion，thedeformmiondoesnotalwaysgrowlagerbutremainsstillaftersomedepthofexcavationarrives，whilethemaximumpointofdeformationgoesdeeperanddeeperduringexcavationAndtheitslocationiSnearthethelevelofexcavationaccordingly；Thecha