超載預(yù)壓加固軟土路基現(xiàn)場(chǎng)試驗(yàn)研究.pdf

1、中國(guó)科學(xué)院武漢巖土力學(xué)研究所碩士學(xué)位論文超載預(yù)壓加固軟土路基現(xiàn)場(chǎng)試驗(yàn)研究姓名：張?jiān)谙采暾?qǐng)學(xué)位級(jí)別：碩士專業(yè)：巖土工程指導(dǎo)教師：汪稔20030601ABSTRACTAsaneffectivemethodofstrengtheningthesoftsoil，thesurchargepreloadingwithpacksandwellsisusedwidelytotreatthesoftgroundinlotsofprojectswhichh

2、avestrictrequirementonpostconstructionsettlementandunevensettlement，ObservationofthesettlementandstabilityiSthemostreliablemethodthatcontrolstheconstructionspeedforensuringthesafetyandstabilityoftheembankmentandevaluates

3、theeffectsofsurchargepreloadingInthispaperthebehaviorofthedeformationandconsolidationofsoftgroundunderhighwayembankmentwerestudiedthoroughlyaccordingtolargeamountsofin—siteobservationdatainXiamenHaicangexpressway，moreove

4、rthedeterminationofconstructioncontrolindexandtheprecompressionperiodwerediscussednleelaborateworkinvolvesseveralaspectsasfollow：1、Theunsuitabilityofthein—useconstructioncontrolindexwasanalyzedbyshowingthattheconstructio

5、ncontrolstandardshouldconsiderthedeformationmechanismofsoftsoils，andflnewsettlementrateindexforhighwaywassuggestedbyconsideringthegeologicalconditionsandsoftsoilproperties2、BasedOnlargeamountsoffieldobservationdata，chara

6、ctersofthedeformationandconsolidationofsoftclayfoundationunderembankmentwerestudiedindetails，andthebehaviorsofthesettlement，lateraldisplacementandporewaterpressurewereanalyzedsystematically3、Bymeansofcomparingandstat，the

7、influencesoftheconstructionmethods，thethicknessofsoftclayandthecofferdamonthesoftgrounddeformationwerediscussed，andareasonableconstructionmethodwasproposedItwasfoundthatthethicknessofsoftclayisthekeyfactortoaffectthegrou

8、ndsettlementMoreover，theadditionalsettlementinducedbylateraldisplacementwasdiscussed4、nleevaluationofsurchargepreloadingandthedeterminationofprecompressionperiodwerestudiedintheoryThecalculationmethodsofpost—construction

9、settlementweredevelopedbasedonfieldobservationdataFinallytheeffectsofsurchargepreloadinginHaicangexpresswaywereevaluatedthroughanalyzingthepostconstructionsettlementsandconsolidationdegreesKeywords：surchargepreloading，so