斜插式電力鐵塔基礎(chǔ)穩(wěn)定性研究及其數(shù)值模擬分析

1、重慶大學(xué)碩士學(xué)位論文斜插式電力鐵塔基礎(chǔ)穩(wěn)定性研究及其數(shù)值模擬分析姓名：李劍玲申請學(xué)位級別：碩士專業(yè)：巖土工程指導(dǎo)教師：劉東燕20040510重慶大學(xué)頸學(xué)鏈論文楚文摘要ABST鬏ACTTheobliqueinsertingfoundationofirontowerforelectricpowerasanewtypeoffoundation，iswidelyusedinthedesignoftransmissionlinesbecausei

2、tcarlbeartheexternalforcerationallyandcaltsavealargeamountofmaterials。Yetthedesigntheoryofthisfoundationisnotperfect，neitheristheapplicationexperienceAtpresent“DesigningTechniquesandRegulationsforfoundationoftransmission

3、lines”(SDGJ一84，1984)isstillusedtoguidethedesignofirontowerfoundationForthistechnicalcriterionhasnotofferedtherelevantcriteriontothedesignofthenew—typefoundation，mostdesignsarebasedontheaccumulationofexperience，lackofcert

4、aintheoreticalsupportTherefore，consideringthedeficiencyoftheexistingregulation，thispapercarriesonadeepanalysisandstudyinthestabili移ofthenewtypeirontowerfoundationunderdifferentcombinedloadsThedetailedaccountiSasfollows：F

5、irst，onthebasisofexistingtheoryandliteratures，thispaperchoosesaproperthree—dimensionalslidingmodethroughacertainsimplificationandassumptionThenadoptingtheupperboundmethodoflimitanalysis，thepaperanalysesthestabilityofthis

6、kindoffoundationunderthehorizontalandcompressionforcesandderivestheformulaofgroundbearingcapacitySecond，accordingtothetheoryofacting—ontogetherbetweenthefoundationandtheground，itanalysestheinfluenceonthefoundationstabili

7、tywhenthesoilbodyaroundthefoundationappearsplasticityatalimitstateItinturnproposesanewappraisalmethodaboutstabilityofirontowerfoundationwhenitisunderthemostdisadvantageousloads(upliftandhorizontalforces)Andusingtheupperb

8、oundmethodoflimitanalysissimilarlyitanalysesthelimitbearingcapacityofsoilinfrontofthepillarandgivesthecorrespondingcalculationformulaInaddition，basedonthetheoryofacting—ontogetherbetweenthefoundationandtheground，thispape

9、gusingthelarge—scalenumericanalysissoareFLAC一3D，setsuptheactualmodelsofthefoundationAndthroughthedisplacementdistributionsandthedevelopingplasticityzonesoftheground，whichareobtainedfromnumericcalculationresultsunderthedi

10、fferentcombinedloads，itanalysesthegroundbearingcapacityandthefoundationstabilityoftheirontowerFinallyusingthecalculationformulaofthispaperweanalysesthestabilitiesofthreekindsoftypicalfoundationsintheNanLongprojectofcircu