青藏高原特殊地形地质环境下（戈壁荒漠地区）路基横断面型式及路基高度研究
发布时间：2018-09-04 15:41
【摘要】：随着国内经济的快速发展,地方路网密度不断增大,为保证路基稳定性,解决因多年冻土、盐渍土及沼泽土对公路的损害,迫使高速公路路基高度不断提高,不过多地占用稀有土地资源、草原资源或林业资源,增大工程规模和工程难度,增加了工程投资和工程工期,而且带来了诸多其他问题,这些问题已经引起各级部门的高度重视,特别是一些设计单位已经开始转变设计理念,提出了高速公路低路基方案设计的思路。在发达国家,高速公路建设和发展较早,对高速公路路基高度也早有研究,而且在实际的工程中应用也很多。而在我国,对低路基的高速公路设计理念和设计方法的研究才刚刚起步,不过已建的几条高速公路证明,在我国建设低路基高速公路是可行的。因此,本项目结合青藏高原青海省戈壁荒漠区人烟稀少地区道路建设的特殊性,开展高等级公路低路基建设技术研究,力求提出指导青藏高原人烟稀少地区低路基高速公路建设的切实办法和指导意见。本文围绕青藏高原戈壁荒漠区高等级公路建设模式和路基横断面形式的选择展开研究,结合青藏高原青海省省境内戈壁荒漠区的特点,提出了高等级公路设计中应该保证的最小路基高度;考虑动物通道的影响,通过改进的方法建立了合理路基高度的模型,并结合研究区域的实际情况,提出了高等级公路合理的路基高度范围。
[Abstract]:With the rapid development of domestic economy and the increasing density of local road network, in order to ensure the stability of subgrade and solve the damage caused by permafrost, saline soil and swampy soil to highway, the subgrade height of expressway is forced to improve continuously, but more land is occupied by rare land resources, grassland resources or forestry resources, and the project scale and difficulty are increased. The project investment and construction period have been increased, and many other problems have been brought to the attention of departments at all levels. Especially, some design units have begun to change their design concepts and put forward the ideas of highway Low Subgrade design. In China, the research on the design concept and design method of the expressway with low subgrade is just beginning, but several expressways have been built to prove that it is feasible to construct the expressway with Low Subgrade in China. Therefore, this project is combined with the Gobi of Qinghai Province on the Qinghai-Tibet Plateau. The particularity of highway construction in desert area with sparsely populated area is studied. The research on Low Subgrade Construction Technology of high-grade highway is carried out, and the practical methods and guiding opinions are put forward to guide the construction of Low Subgrade highway in sparsely populated area of Qinghai-Tibet Plateau. According to the characteristics of Gobi desert area in Qinghai Province of Qinghai-Tibet Plateau, the minimum embankment height should be guaranteed in the design of high-grade highway is put forward. Considering the influence of animal passage, the model of reasonable embankment height is established by improved method, and the high-grade highway is put forward according to the actual situation of the study area. Reasonable roadbed height range.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U416.1
本文编号：2222609
[Abstract]:With the rapid development of domestic economy and the increasing density of local road network, in order to ensure the stability of subgrade and solve the damage caused by permafrost, saline soil and swampy soil to highway, the subgrade height of expressway is forced to improve continuously, but more land is occupied by rare land resources, grassland resources or forestry resources, and the project scale and difficulty are increased. The project investment and construction period have been increased, and many other problems have been brought to the attention of departments at all levels. Especially, some design units have begun to change their design concepts and put forward the ideas of highway Low Subgrade design. In China, the research on the design concept and design method of the expressway with low subgrade is just beginning, but several expressways have been built to prove that it is feasible to construct the expressway with Low Subgrade in China. Therefore, this project is combined with the Gobi of Qinghai Province on the Qinghai-Tibet Plateau. The particularity of highway construction in desert area with sparsely populated area is studied. The research on Low Subgrade Construction Technology of high-grade highway is carried out, and the practical methods and guiding opinions are put forward to guide the construction of Low Subgrade highway in sparsely populated area of Qinghai-Tibet Plateau. According to the characteristics of Gobi desert area in Qinghai Province of Qinghai-Tibet Plateau, the minimum embankment height should be guaranteed in the design of high-grade highway is put forward. Considering the influence of animal passage, the model of reasonable embankment height is established by improved method, and the high-grade highway is put forward according to the actual situation of the study area. Reasonable roadbed height range.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U416.1
【参考文献】
相关期刊论文 前4条
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，本文编号：2222609
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