小草湖—吐鲁番段高速公路建设工程特殊路基处理及路线选定研究

发布时间：2018-05-03 05:25

本文选题：小草湖-吐鲁番 + 高速公路　；参考：《新疆农业大学》2015年硕士论文

【摘要】：本文研究的小草湖-吐鲁番段高速公路《国家高速公路网规划》“五纵七横”的国道主干线连云港至霍尔果斯高速公路(G30)的组成部分;是新疆交通运输规划57712高速、高等级公路网横一的组成部分;同时也是G30连-霍与G7京-新两条战略地位重要的国道主干线共线段;已被列入“十二五”高速公路建设规划之中。连接了阿勒泰市、北屯镇和福海县,是该路段内南北向联系的干线公路。本文的主要研究内容包括路线设计选定,借鉴国内已研究出来的特殊路基处理经验和办法,结合本文研究的具体路段的沿线地质、地貌、水文、气象等因素,阐述了盐渍土的危害,并就特殊路基的处理,得出以下结论:(1)该路段穿越区域自然环境较为复杂,充分考虑人、车、路的关系、建设与环境等各类关系,满足交通的需求。对比本文提出的推荐路线和比较路线优缺点后得出:比较方案虽然能够更多的利用G312线,且有利于吐鲁番市的居民能够更加快捷的上下高速公路,但缺点也较为明显,且费用较推荐方案高出很多,所以课题组建议采用推荐方案。(2)路段区域内干旱少雨,夏季高温,蒸发量大于降水量的几十倍,使得土中可溶性盐随着毛细水上升聚于表层,形成特殊地段,根据种类进行科学划分归类,通过实验测得该路段区域干土内的含盐量大小,最终按照盐渍土路段特殊路基进行处理。(3)经过比对和借鉴国内经验,结合实地土中的含盐性质、含盐量的不同,路基挖填及老路利用情况,主要选择采用砾石土换填、土工布隔断、降低路基水位三种方法进行盐渍路段的特殊路基处理。
[Abstract]:The national highway network planning of Xiaocaohu-Turpan section studied in this paper is a part of Lianyungang to Horgoz Expressway G30, which is the main line of "five columns and seven transverse". It is the 57712 expressway of Xinjiang Traffic and Transportation Planning. The high grade highway network is a part of the first section of the highway network, and it is also a common section of the main national highway between G30 Lian-Huo and G7 Beijing-New strategic position, and has been included in the "12th Five-Year Plan" highway construction plan. Connecting Altay City, Beitun Town and Fuhai County, it is the trunk road with north-south connection. The main research contents of this paper include route design and selection, reference to the experiences and methods of special roadbed treatment that have been studied in China, combined with geological, geomorphological, hydrological and meteorological factors along the specific road sections studied in this paper. The harms of salinized soil are expounded, and the following conclusions are drawn on the treatment of special subgrade. The following conclusions are drawn: (1) the natural environment of this section is more complicated, and the relationships among people, cars, roads, construction and environment are fully considered to meet the needs of traffic. After comparing the advantages and disadvantages of the recommended route and the comparative route proposed in this paper, it is concluded that although the comparison scheme can make more use of the G312 line, and is beneficial to the residents of Turpan City to be able to move up and down the expressway more quickly, the disadvantages are also obvious. And the cost is much higher than that of the recommended scheme. Therefore, the research group suggested that the recommended scheme should be used in the area with less drought and less rain, high temperature in summer and evaporation more than tens of times of the precipitation, so that the soluble salt in the soil accumulated in the surface layer with the increase of capillary water. Forming a special section, scientifically classifying and classifying it according to the type, measuring the salt content in the dry soil of the section by experiment, and finally treating the special subgrade of the section of saline soil according to the special roadbed of the section of saline soil, after comparing and drawing lessons from the domestic experience, Combined with the salt property of soil, the difference of salt content, the subgrade digging and filling and the utilization of the old road, three methods, gravel soil for filling, geotextile partition and lowering the subgrade water level, are mainly adopted to deal with the special subgrade in the salinized section.
【学位授予单位】：新疆农业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U416.1

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