广西地区膨胀土路基典型沥青路面结构的研究.pdf

摘要广西是我国膨胀土分布较广的地区,如何在膨胀土路基上修筑路面成为广西地区较为重要的课题。过去由于对膨胀土路基路面结构重视不足,导致目前相当部分膨胀土地段上的路面发生了不同形式的破坏,既影响了交通,又浪费了工程投资。因此本文在对广西地区膨胀土性质、膨胀土和非膨胀土地段路基路面病害调查基础上,针对广西膨胀土性质及膨胀土路基路面膨胀破坏的原因,提出了用加筋减小膨胀土路基上的路面破坏的方法。采用有限元方法对用土工格栅减小土基不均匀膨胀力对路面结构的影响进行了详细的分析和论证。根据膨胀土路基强度特点及广西地区交通特点、材料性质,制定了广西地区膨胀路基的路面典型结构,供膨胀土地区路面结构设计参考,以使广西地区膨胀土路基的路面结构设计规范化、典型化、图表化,使膨胀土地区路面结构设计安全可靠、经济合理,减少膨胀土地区路面病害。关键词:广西公路、沥青路面、病害调查、典型结构、膨胀土、有限元分析 AB STRACT Guangxi is a area with widely distribution ofexpansive soil isan important issue toconstruct the road on roadbed ofexpansive the part。because oflitterattention on theroadbed and the road surface,there are in a substantialpart oftheroad surface on theexpansion soilhaving taken place invarious forms is not onlyaffected thetraffic,and awaste this articlebase on the nature ofexpansive soiland theinvestigation ofdisease on the roadbed ofexpansive soils and non—expansion soils.’Aiming atthe cause ofthis problem,we bring forwardtoputup steelbar toreduce thedamage oftheroadsurface on finiteelement method used toreduce soil—geogrid uneven expansion oftheforce on the surface structure of ad“led analysis and argument. According totheexpansive soilsubgrade strength and characteristics oftheGuangxi haracteristics,the nature ofthematerial,thedevelopment oftheGuangxi regional expansion ofthe roadpavement typical structure of thesurface area ofland avallable forexpansion ofthe structural design ,to make theGuangxi region ofexpansive soil surface structures embankment designstandardized,typifying, Charts,so thattheexpansion oftheland surface areathe structuraldesign ofsafe, reliable,economical,toreduce the surface area oflandexpansion ofthe disease. Keyword:Guangxi highway,Asphalt Pavement,Distress Survey,Typical Structure, Expansive Soil,FiniteElement Method 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