高速鐵路壓實標準仿真與基床動力響應分析.pdf

1、西南交通大學碩士學位論文高速鐵路壓實標準仿真與基床動力響應分析姓名：周飛申請學位級別：碩士專業(yè)：道路與鐵道工程指導教師：蘇謙20070601西南交通大學工程碩士研究生學位論文第1f頁AbstractThesubgradeplayesanimportantroleinthesafetyofhighspeedrailwayHowtoimprovethestiffnessandstrengthofthesubgrade，reducethese

2、ttlementafterconstructionandincreasetheoverallstabilityhasbeen鋤urgentproblemwiththeincreaseoftherunningspeedincreasinglyTherefore，adoptingscientificcompactedcontrolmethodsandhowtoreducetheeffectsoftheincreasingspeedonthe

3、subgradehavebeenthefocusinthetechnologyresearchofhighspeedrailwaysubgradeinallcountriesNowdays。thefoundationcoefficlentk30ismainlyappliedinthesubgradecompactedcontrolcriterionofourcountryandthedynamicdeformationmoduleEvd

4、hasgraduallybeenintroduced。Inadditionmanytestsandtheoreticalreasearchonthed”umicresponseofhigh—speedrailwaysubgradehavebeendoneInthispaper，mathematicssimulationanalysisandresearchonk30andEvdareperformedbasedonthefiniteel

5、ementmethodAsimulationmodeloftheplateloadtestisestablishedheretoresearchoilk30Therelationshipbetweenk30anddeformationmodulusEisresearchedandtherelationalexpressionisE=O208k30Theinfluencingrangeofk30testisalsostudledwitht

6、hesettlementprecentasthecriterionItisfoundedthattheinfluencingareaindepthisabout11mwhilethatonsidewaysisabout07mInaddition，theoperabilitystudyonk30ofhighspeedrailwaysubgradeisdonetodrawtheconclus20nthattheminimumsofthesu

7、rfacelayerofbedding，thebottomlayerofbedding，theembankmentunderneathandthedeformabi1itymodulusofgroundcanrespectivelybe45MPa、35^伊a、20MPaand15^lPainthecalculationandanalysisofrailwaysubgradeAsimulationmodeloftheplateloadte