既有线提速改造工程综合测试与评估分析

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1、中南大学硕士学位论文ABSTRACT3．Highliftabsolutebedsectionballastbedparametertestresultsarenormal，thedynamicpiletestresultsareinsafetylimitrange．Intheroadbed，byusingmethodofcombiningwithdynamicpiletestwhichusetestcarpassthepresetstationrecordssubgradebeddynamicloadanddynamicdeforma

2、tionanditschangeruleandstatictestmethodwhichusethesetsettlementobservationpoint，tocarryonthelong—termsettlementdeformationobservationtoevaluatetheadaptabilityofthesubgrade，throughtheevaluationanalysisfoundthat：1Transformationlinesubgradebedinsufficiencyofbearingcapacity

3、commonly,weneedtostrengthenthemaintenanceofsubgradeorincreasetheballastbed．2Combinedwithcomprehensiveprevioustestresultsofspeed-uplinesubgrade，inallloadanddeformationcharacter,axleloadistheimportantfactorsthatinfluencethedynamicindexofroadbed，comparativelyspeaking，notas

4、wellasthespeedis．theinfluenceofthetrainandstrengthentheorbitandthemaintenanceoftheroadbedshouldbemainlyconsidedinspeed-upproject．3Thedynamicstressanddynamicdeformationvalueofvanisgreaterthanthebustestvalueandthedynamicdeformationtestvalueofreconstructionofsectionappears

5、individualpartiallargermainlyduetothereform’Stimeistooshortforballasttostable．Theresearchmentionedaboveshowsthat：throughthetest，researchandstatisticalanalysis，theevaluationprocessofcomprehensivesituationofexistinglinesspeed-upshowsitscompliancewithlinesafetyindexanddriv

6、ingconditionsornot，theevaluationestablishedonthebasisofthetestlineandsubgradeshowsrationalityandcomprehensive．KEYWORDS：Existinglinesspeed—up；modificationactiontest；roadbedreinforcement；linesmoothdegreeevaluationClassification：625IV中南大学硕士学位论文目录目录摘j12}⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯

7、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯IABSTRACT⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯III目录⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯。V第一章绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．1．1．1研究背景及意义⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．1-1．2研究现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．2．1．3主要研究目的⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．

8、．6．1．4主要研究内容⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．一6．1．5论文结构⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．7．第二章沪昆线提速改造工程与速度目标值确定方法⋯⋯⋯⋯⋯⋯⋯⋯⋯