摘要
本毕业设计题目为公路设计,道路位于雅鲁藏布江流域路线区域内主要为山岭区,地形起伏较大,设计车速60km/h。设计通过两个方案的比选来确定较佳路线,两个路线全长大概都在三千五百米左右,所选方案二路线全长3544.654m,双向两车道,路基宽10m,路面宽7m。所选沥青路面设计年限12年。设计包括三个部分,内容如下:第一部分公路线形设计,在本部分,通过认真仔细的研究,结合实际情况,综合考虑了路线填挖平衡、平曲线的优化、不曲线与竖曲线组合原则等,确保了设计线形的优化,然后根据两个比选方案的技术经济指标,对方案进行比选,从中确定较合理的方案第二方案作为推荐方案。第二部分为路基工程设计包括支挡工程设计等。第三部分为路面工程设计,选择沥青混凝土路面和水泥混凝土路面分别进行了设计,并对两个方案进行比选,选定沥青混凝土路有为推荐方案,整个排水系统山边沟、排水沟组成。相关的图纸、表格附后。
关键词:路线面线形:纵断面设计;横断面设计:重力式挡土墙:路面设计
Resume
The graduation design project focuses on the 13th contract section of the Jiacha-Sangri Highway in Tibet,located primarily in mountainous regions within the Yarlung Zangbo River Basin.Given the significant topographical variations,the design speed is set at 60 km/h.The design process involved a comparative analysis of two potential routes,both approximately 3,500 meters long.Ultimately,Route Option 2 was chosen,spanning 3,544.654 meters.It comprises a dual two-lane configuration with a 10-meter-wide roadbed and a 7-meter-wide pavement.The asphalt pavement is designed for a service life of 12 years.
The design encompasses three primary components:Firstly,the highway alignment design,which involved careful study and consideration of factors such as cut-and-fill balance,optimization of horizontal curves,and the combination of horizontal and vertical curves.This ensured the optimization of the design alignment.After comparing the technical and economic indicators of both options,Route Option 2 was selected as the recommended route.Secondly,the subgrade engineering design,including retaining wall design.Lastly,the pavement engineering design,which involved the evaluation of asphalt concrete and cement concrete pavement options.Ultimately,asphalt concrete was chosen as the preferred pavement material.The entire drainage system comprises side ditches and drainage ditches.Relevant drawings and tables are attached.
Keywords:Highway Alignment;Longitudinal Profile Design;Cross-sectional Design;Gravity Retaining Wall;Pavement Design
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