水泥土樁復(fù)合地基樁土應(yīng)力比的研究.pdf

1、u∥紅分類號——丫777931密級——搴卞斜旅大茅碩士學(xué)位論文水泥土樁復(fù)合地基樁土應(yīng)力比的研究學(xué)位申請人：黃海松學(xué)科專業(yè)：巖土工程指導(dǎo)教師：鄭俊杰副教授論文答辯日期2QQ壘：量：2學(xué)位授予日期——答辯委員會主席塑：|至建評閱人王丞這墊坯建墓塞重華中科技大學(xué)碩士學(xué)位論文AbstractInthepasttwodecades，soilimprovementtechniqueshavebeendevelopedrapidlyinourcoun

2、tryCompositefoundationformedbysoilcementpileisakindofmethod，whichhavebeenwidelyusedingroundtreatmentatpresentHence，itisoftheoreticalandpracticalsignificancetomakearesearchonstressratioofpile—soilofcompositefoundationform

3、edbysoilcementpileFirstlythethesissummarizesthedevelopmentinthemethodofcompositefoundationathomeandabroad，especiallythemethodofcompositefoundationformedbysoil—cement—pileSecondly，itsystematicallyexpoundsthereinforcingmec

4、hanism，andnatureofmaterialsinsoilcementpileThirdlytheCUlTentresearchesonstressratioofpilesoilaresummarized，andtheadvantagesanddisadvantagesallkindsofmethodsarerespectivelydiscussedConsideringtheeffectwhichthesoilsurround

5、ingthepilehasmadeonthestressratioofpilesoilofsoil—cementpilecompositefoundation，firstofall，thehardeningmodelofthesoilsurroundingthepileisadoptedAccordingtotheloadtransfermechanismofsoilcementpile，andassumingthattheaxialf

6、orceatthecrosssectionofcertaingreatdepthofsoil—cementpileiszero，theanalyticalsolutionsofcriticallengtharededucedrespectivelyatthestagesofelasticityandplasticityofthesoilsurroundingthepileAndthen，bymeansofbilinearloadtran

7、sferfunction，analyticalequationsfortheaxialloadsettlementcurveareestablishedFurthermore，itisappliedtodescribethecharacteristicsoftheload—settlementcurveofpileAfterward，thesofteningmodelofthesoilsurroundingthepileisadopte

8、d，andbymeansoftfilinearloadtransferfunction，asetofanalyticalequationsfortheaxialloadsettlementcurveareestablishedFurthermore，itisalsoappliedtotheloadsettlementcurveofpileFinallyhyperbolaisselectedtOdescriblethecharacteri

9、sticofload—settlementcurveofthesoilanalyticalequationsforanalyzingpile—soilstressratiocosideringtheinteractionbetweenthepileandthesoilarereduced，andtheeffectsthatthoseparametersintheequationshavemadeonpile—soilstressrati

10、oarediscussedAtIasttheauthorthinksthatthestressratioofpilesoilofcompositefoundationformedbysoil—cementisaffectedbynotonlythecharactersofthesoilsurroundingthepile，butalsotheshapeofthepile，thedimension，elasticmodulusaswell