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1、學(xué)號(hào)：常州大學(xué)畢業(yè)設(shè)計(jì)（論文）（2013屆）題目砂性土與水泥漿體剪切特性試驗(yàn)研究學(xué)生王瑩學(xué)院懷德學(xué)院專業(yè)班級(jí)土木091校內(nèi)指導(dǎo)教師夏雄專業(yè)技術(shù)職務(wù)副教授校外指導(dǎo)老師蔡云專業(yè)技術(shù)職務(wù)總工程師二○一三年六月砂性土與水泥漿體剪切特性試驗(yàn)研究摘要：樁基礎(chǔ)是一種重要的基礎(chǔ)形式，在鐵路、公路、橋梁、港口碼頭、高層建筑等工程中應(yīng)用十分廣泛。樁-土接觸面力學(xué)特性的研究是解決樁-土相互作用問(wèn)題的前提,尤其對(duì)于摩擦型樁而言,樁-土接觸面問(wèn)題直接影響到樁基的承載力。本文針對(duì)常州土層特點(diǎn)，考慮樁體壓入砂土的力學(xué)特性，開(kāi)展了三種不同水灰比和密實(shí)度的砂土與混凝土樁接觸面室內(nèi)單剪試驗(yàn)，每組試驗(yàn)
2、考慮5個(gè)法向應(yīng)力。試驗(yàn)結(jié)果表明，砂土與樁接觸面的力學(xué)行為隨砂土的密實(shí)度和水灰比呈現(xiàn)明顯相關(guān)性。在砂土密實(shí)度一定時(shí)，接觸面的抗剪強(qiáng)度，摩擦角、隨混凝土試樣水灰比的增大非線性單調(diào)減小，粘聚力單調(diào)減大。在水灰比一定時(shí)，接觸面的抗剪強(qiáng)度，摩擦角、隨砂土密實(shí)度的增大非線性單調(diào)增大，粘聚力單調(diào)減小。法向應(yīng)力較小時(shí)密實(shí)度對(duì)接觸面應(yīng)力應(yīng)變曲線的初始段影響不大。試驗(yàn)結(jié)果可供相關(guān)工程數(shù)值分析參考。關(guān)鍵詞：接觸面；剪切特性；試驗(yàn)研究；砂土；水泥漿Studyofshearpropertiesofsand-cementslurryinterfacebyshearexperimentalst
3、udyAbstract：Thepileisallimportantfoundationform，anditisextensivelyusedinrailways，roads，bridges，portsandhigh一risebuildings．Theinterfacemechanicalpropertiesbetweenpileandsoilaretheprerequisiteforthepile-soilinteractionproblem.AccordingtothepropertiesofChangzhouregion,consideringthemecha
4、nicalpropertiesofbodyispressedintothesand,experimentsbyusinglaboratorysheartestsareperformedonsandconcreteinterfaceswiththreekindsofsanddensity，wherefivenormalstressesaretakenintoaccountineachsanddensityinthispaper.Theexperimentaldatashowthatdensityofsandandwatercementratioplayanimpor
5、tantroleinmechanismbehaviorofpile—soilinterface．Whiledensityofsandisfixed，,withhigherwatercementratio,shearingstrength,frictionangleoftheinterfacealldecreasemonotonouslyandnonlinearly,butcohesionforceoftheinterfaceincrease．Whilewatercementratioisfixed，withhigherdensityofsand,shearings
6、trength,frictionangleoftheinterfacealldecreasemonotonouslyandnonlinearly,butcohesionforceoftheinterfaceincrease．Theinitialpieceofstress—straincurveofinterfabeisnotsensitivetodensityofsand.ThisexperimentaIresultsputthegoodfoundationforrelativeengineeringnumericalsimulation．Keywords：int
7、erface,shearproperties,experimentalstudy,sand,cementslurry,VI摘要····································································Ⅰ目次····································································II1緒論···································································11.1接觸面特性··
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