多年凍土地區(qū)鉆孔灌注樁回凍分析.pdf

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