深厚軟土區(qū)段高速鐵路橋梁樁基承載機(jī)理及沉降特性分析.pdf

1、中南大學(xué)碩士學(xué)位論文深厚軟土區(qū)段高速鐵路橋梁樁基承載機(jī)理及沉降特性分析姓名：陳銀象申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：土木工程指導(dǎo)教師：魏麗敏201105ABSTRACTBasedontheprojectitemofHangzhouNingbopassengerspecialline，thebearingmechanismandsettlingcharacterofboredpilesthatinthesoftsoilareawerestudied

2、anddiscussedThemainworksandconclusionsasfollows：(1)Bymeansofstaticloadtests，theloadtransfermechanismofpile—soilsystemWasresearchedSedimentationonthetopofpiles，behaviorsofskinresistanceandaxialforcewereincludedItshowsthat

3、thepilestillhadpotentialbearingcapacity；skinresistanceWasthefirsttoworkintheuppersideofthepileWiththeincreasingloadonthetopofthepile，skinresistanceatthemiddleandlowerpartbeginstowork(2)Compressionbehaviorsofpileandsoilam

4、ongpilesweremonitoredforalong—termTheresultsindicatedthatbothofthemincreaseasupperloadincreases，andbecomemoreandmoregentlyastimegoeson(3)Accordingtotheunderlyingprinciple，computationalmethodandapplicability，severalkindso

5、fcalculationmethodaboutSedimentationofsinglepilethatalesummedupandsortedoutinthispaperAmethodfromthecurrentrailwaybridgestandardisrecommendtOcalculatethedeformationofsinglepile(4)Accordingtothecomputationalmethod，assumpt

6、ions，andcalculationmethodsaboutSedimentationofpilegroupwerecomparedanddiscussedDeformationsofpilegroupin666#pierofNingboSupermajorBridgewerecalculatedbyseveralmethodsfromdifferentstandardsItshowsthatthesedimentationvalue

7、sareveryclose，butthedepthsofcompressivestratumwhichcalculatedbydifferentmethodsarenotthesame(5)Bythefiniteelementsofare—一ADINA，pile—soilinteractionofboredpileinthesoftsoilareawassimulatedTherearedifferencesbetweencompute