多年凍土地區(qū)鉆孔灌注樁回凍分析.pdf

1、東北林業(yè)大學(xué)碩士學(xué)位論文多年凍土地區(qū)鉆孔灌注樁回凍分析姓名：岑成賢申請學(xué)位級別：碩士專業(yè)：道路與鐵道工程指導(dǎo)教師：賈艷敏20050101與、11：林Jk凡學(xué)壩卜尹應(yīng)論史AbstractChinaisacountrywithlargepermafrostThestructureswhichareconstructed訊permafrostregionareinfluencedbytheinstabilityoffrozensoilonth

2、ermodynamicsItisuniversalthatthestructuresaredestroyedinpermafrostregionforthefrostheaveanditisseriousinfluencedthenormaltrafficofourcountryItisimportantforpeopletostudyfrostheaveoffrozensoilTherearenOmoreperfectlysystem

3、oftheoryforthestudyoffrostheavePeopleusuallystudythefrostheavebydoingexperimentduringtherealengineeringThethesismainlystudycourseoffreezingsoilwhentheboredpilehascasttheconcrete，thatis，studyingthetemperaturefilebetweenfr

4、ozensoilandboredpileInthethesis，firstlytheauthorintroducestheactualityandthedevelopmentofstudyfrostheaveofourcountryandoverseaSecondly，theauthorsumupformsofpilesinthepermafrost，characteristicoffrozensoilinengineering、pro

5、pertyofmechanicsandthewayofcalculatetemperatureoffrozensoilTheauthoralsointroducessomebasictheoryoffrostheaveandfrostheaveforceandthenintroducesbasicfunctionsofANSYSinthermalmodelInthethesistheauthorusesforreferencethewa

6、ywhichpeopleusetostudytheproblembetweensoilandpile，USeSforreferencethebasictheoryofthermodvnamicsduringthestudyTheauthoralsoconsiderthespecialcharacteroffrozensoil，forexample，enthalpyoffrozensoilandconsidertheeffectofhyd

7、rateofconcreteaftercastingtheconcrete，buildingthefiniteelementmodelofdifferentlengthandradiusofpileanddifferenttemperatureofcastingconcretebyANSYSsoftwareinthermalmodelfindingoutdistributing0ftemperaturefieldbetweenthepe

8、rmafrostandboredpileontheconditionofconsideringfactoroftime(transient)TheresultoffiniteelementmodelcreatedbyANSYSisverifiedbythesinglepileexperimentinKunLunShanpermafrostzone，latelyOnthebasisofthefiniteelementmodel，thist

9、hesismainlyconsummatefouraspectsofworksfollowingFirstly，theauthoranalysestheeffectofboredpileduringrefrozenbydifferentlengthofpileandfindoutdifferentcurveoftemperatureofboredpileSecondlytheauthoranalysestheeffectofboredp

10、ileduringrefrozenbydifferentradiusofpileandfindoutdifrerentCHIveoftemperatureofboredpileThirdly，theauthoranalysestheeffectofboredpileduringrefrozenbydifferenttemperatureofcastingconcreteandfindoutdifferentcurveoftemperat

11、ureofboredpileLatelythefunctionofhydrationofconcreteiSreducedwiththedistancefrOlllpileincreasingTheauthol’findouttheincidencewhichhydrationofconcreteeffectonpermafrostOilthebasesoftheresultoffiniteelementmodelthatcreated