欢迎来到天天文库
浏览记录
ID:36415989
大小:6.69 MB
页数:92页
时间:2019-05-10
《云南省高海拔地区沥青路面温度场及温度应力数值计算分析》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、重庆交通大学硕士学位论文云南省高海拔地区沥青路面温度场及温度应力数值计算分析姓名:刘继忠申请学位级别:硕士专业:道路与铁道工程指导教师:张维全20090301ABSTRACTTheasphaltpavementexperiencestwoeffectofbothvehicleloadandtemperatureloadunderthenaturalenvironment,whoseloadsupportcapabilityandtheroadperformanceareseriouslyaffecterd.Thispaperistosea
2、rchakindofpavementstructuresuitedforthespecialclimateofyunanhighaltitudearea,bycalculatingthetemperaturedistributionofthedifferentpavementstructure·Thefirst,heatconductionequationisestablished,borderconditionofmodeldefinedthroughthebasictheoryofmeteorologyandheatpassagean
3、dthetemperaturefiniteelementequationisbuiltedbyVariationprincipleofJialiaojin;Secondly,anexamplealreadyisanalysedbyapplyingthefiniteelementgeneralprogramANSYS,bydistanceanalysismethodtoestimatetheprogramadaption;Thirdly,thetemperaturepar锄etersofANSYSareascertainedbyanalys
4、ingthemeteorologicaldataofDiQing;Atlast,thesensitivityanalysisofsinglefactorandorthogonalityofmuchfactorareappliedtosearchtheoptimumlevel,optimumlevelcombination,primaryandsecondaryorderoftheinfluencingfactor.ThepavementstructurelSrecommended,combinedhighwaygradeandinvest
5、ment.Studyresultindicates,theinfluencingdepthoftheexternalairtemperatureisapproximately25——30cms;Temperaturesituationofasphaltpavementandcementstablebaseisimprovedduetoheatpreservationandinsulationperformanceofmatch.grass;Theeffectofheatconductioncoefficientofasphaltpavem
6、entishighlynotabletothetemperaturegradofasphaltpavement,thicknessofasphaltpavementnotable.specificheatofasphaltpavementandheatconductioncoefficientandspecificheatofbasenonotable.ThetemperaturestressofpavementstructureofbeingrecommendedCansatisfystandardcall,beingcomparedw
7、ithallowedstressofasphaltpavementofstandard.KEYWORDS:Finiteelementmethods;Temperaturefield;Temperaturestress;Distanceanalysis;orthogonality;asphaltpavement重庆交通大学学位论文原创性声明本人郑重声明:所呈交的学位论文,是本人在导师的指导下,独立进行研究工作所取得的成果。除文中已经注明引用的内容外,本论文不包含任何其他个人或集体已经发表或撰写过的作品成果。对本文的研究做出重要贡献的个人和集
8、体,均已在文中以明确方式标明。本人完全意识到本声明的法律结果由本人承担。学位论文作者签名:刍1往惠·R期:加7年年月夕日重庆交通大学学位论文版权使用授权书本学位论文作者完全了解学校有关保留、使
此文档下载收益归作者所有