再生集料刚性基层结构研究

《再生集料刚性基层结构研究》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、山东大学硕士学位论文再生集料刚性基层结构研究姓名：吴世美申请学位级别：硕士专业：道路与铁道工程指导教师：姚占勇20090522山东大学硕士学位论文设计及验证，探寻合理的设计方法。关键词：半刚性基层?再生集料?刚性基层?配合比?横缝间距，温度应力。Il山东大学硕士学位论文ABST队CTSemi．rigidpavementstructureisthemaintypeofpavements臼眦tIlreinChina．Becauseofheavytrafficandmanyotherreasons，theearly

2、damageofsemi—rigidpavementstructureisserious．Moreover,theearlyconstructedfreewayisgoingintotheoverhaulperiodoneafteranother．Themilledsemi．rigidbasematerialisenormouswasteofresources，andresultinaseriesofenvironmentalproblems．Consideringtheseriouswasteofmille

3、dsemi-rigidbaseinfreewayoverhaul，atechniqueonreclaimedlime．flyashmacadamusedinrigidbaseWasstudied．TheconceptofrigidbasewithmeshreinforcementWasputforward．LoadstresssimplifedmodelofrigidbasewithmeshreinforcementWassetup，andthestressofasphaltpavementwi也recycl

4、edconcretebaseWasanalyzed．Underthestandardtrafficloadandoverloadconditions．itsstressandstrainchangingruleswereobtained．Throughthethree·dimensionalfiIliteelementmethod．stress．strainofrigids1帅ctIJresofdifferentreinforcementunderstandardloadandoverloadWascalcu

5、latedtodeterminetheimpactofdifferentprogramsonthemeshreinforcementslmctlⅡIes．Thefatiguelivesofasphaltpavement谢n1differentrigidbasestructureswerepredicted．Theroleofmeshreinforcement，thereinforcementnetsettingslocationandreinforcementratioweredetermined．Thete

6、mperaturegradientofconcretebaseS1蚋JctI鹏withasphaltsurfaceWasanalyzed．ThetemperaturefieldofpavementstructureWasobtainedusingthree．dimensionalfiniteelementmodel．Thethermalstressandcouplingstressofasphaltpavement、^，itllconcretebasewereanalyzed．Studiessuggestth

7、at：theweatheroftemperaturedropped15。Cadayisrarely，unlikethevehicleloadasthousandstimeseveryday．TakingthecouplingstressasthecalculationbasisoffatigueIifeisunreasonable．Adoptingthermal-stresscouplingmethod，thermalstressofasphaltpavementwithrigidbasewithdiffer

8、enttransverseiointspaceswascalculatedandanalyzed．ThetransversejointspacesuitableforrigidbaseofrecycledaggregateWasputforward．Studiessuggestthattemperaturegradientandwarpingstressdecreasedsharplyafterpa