【摘要】：隨著國(guó)內(nèi)經(jīng)濟(jì)的快速發(fā)展,地方路網(wǎng)密度不斷增大,為保證路基穩(wěn)定性,解決因多年凍土、鹽漬土及沼澤土對(duì)公路的損害,迫使高速公路路基高度不斷提高,不過(guò)多地占用稀有土地資源、草原資源或林業(yè)資源,增大工程規(guī)模和工程難度,增加了工程投資和工程工期,而且?guī)?lái)了諸多其他問(wèn)題,這些問(wèn)題已經(jīng)引起各級(jí)部門(mén)的高度重視,特別是一些設(shè)計(jì)單位已經(jīng)開(kāi)始轉(zhuǎn)變?cè)O(shè)計(jì)理念,提出了高速公路低路基方案設(shè)計(jì)的思路。在發(fā)達(dá)國(guó)家,高速公路建設(shè)和發(fā)展較早,對(duì)高速公路路基高度也早有研究,而且在實(shí)際的工程中應(yīng)用也很多。而在我國(guó),對(duì)低路基的高速公路設(shè)計(jì)理念和設(shè)計(jì)方法的研究才剛剛起步,不過(guò)已建的幾條高速公路證明,在我國(guó)建設(shè)低路基高速公路是可行的。因此,本項(xiàng)目結(jié)合青藏高原青海省戈壁荒漠區(qū)人煙稀少地區(qū)道路建設(shè)的特殊性,開(kāi)展高等級(jí)公路低路基建設(shè)技術(shù)研究,力求提出指導(dǎo)青藏高原人煙稀少地區(qū)低路基高速公路建設(shè)的切實(shí)辦法和指導(dǎo)意見(jiàn)。本文圍繞青藏高原戈壁荒漠區(qū)高等級(jí)公路建設(shè)模式和路基橫斷面形式的選擇展開(kāi)研究,結(jié)合青藏高原青海省省境內(nèi)戈壁荒漠區(qū)的特點(diǎn),提出了高等級(jí)公路設(shè)計(jì)中應(yīng)該保證的最小路基高度;考慮動(dòng)物通道的影響,通過(guò)改進(jìn)的方法建立了合理路基高度的模型,并結(jié)合研究區(qū)域的實(shí)際情況,提出了高等級(jí)公路合理的路基高度范圍。
[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.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：U416.1

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本文編號(hào)：2222609