發(fā)布時間：2018-05-07 00:39

  本文選題：景區(qū)道路 + 二改一��； 參考：《重慶交通大學》2015年碩士論文

【摘要】：隨著公路總里程數(shù)的不斷增加,我國交通擁擠狀況得到了有效緩解,但許多已建成公路面臨著運輸能力不足及病害多發(fā)問題,而通過公路改擴建,能很好地解決上述問題。我國的高速公路改擴建技術已相對趨于成熟,相關研究成果亦較多,但對于二級及以下公路改擴建工程研究則較少,而我國早期的景區(qū)道路多為二級及以下公路,此類道路改擴建工程設計,除面臨常規(guī)公路改擴建難點外,環(huán)境保護及景觀打造要求特別高。因此,有必要在高速公路改擴建技術研究成果的基礎上,對此類景區(qū)道路改擴建技術展開研究。本文依托國道321陽朔至桂林段擴建工程(No.1標段),對該景區(qū)“二改一”(二級公路升等為一級)項目路線設計技術、原有路況評價及利用技術、景觀設計技術展開研究。結(jié)果表明,該景區(qū)道路“二改一”路線設計取得了較好的實施效果,類似工程設計可遵循“注重沿線環(huán)境保護,環(huán)保選線”、“減小對重點景區(qū)的干擾,文明選線”、“選擇合理的擴寬方式,精心布線”等六大設計要點;該“二改一”項目制定的路況評價方法是可靠的,即二級及以下公路改擴建工程原路面使用狀況評價,在設備資金等條件受限的情況下,可采用半經(jīng)驗半理論的評價方法,在測定路面承載力或結(jié)構強度的基礎上,緊密結(jié)合項目的路面病害特征,選取主要指標對路面使用狀況做出評定,評價結(jié)果可作為路面改造設計依據(jù);對于提級升等道路路面利用方案設計,如需調(diào)整原路平縱,應首先根據(jù)路況確定路面理論最小抬高值,再根據(jù)平縱調(diào)整情況,分段設計每個段落的路面利用方案;創(chuàng)新性地將部分原路行道樹保存于擴建后中分帶或側(cè)分帶的設計方案是可行的,且取得了較好的景觀與環(huán)保效果,而該項目中分帶景觀設計方案與觀景平臺設計方案,均取得了較好的實施效果。對依托項目的設計關鍵技術展開了研究,總結(jié)出該景區(qū)“二改一”工程的路線設計要點,總結(jié)出基于必要性關鍵指標的改擴建公路路面使用狀況評價方法,提出基于理論最小抬高值的縱斷面設計方法,提出以“保護和利用”為核心的景區(qū)公路改擴建景觀設計原則及方法,研究成果可供類似工程參考,具有較大現(xiàn)實意義。
[Abstract]:With the increase of the total mileage of the highway, the traffic congestion in our country has been effectively alleviated, but many of the completed highways are faced with the problems of insufficient transportation capacity and frequent diseases, and these problems can be solved well through the reconstruction and expansion of the highway. The highway reconstruction and extension technology in our country has been relatively mature, and the related research results are also more, but the research on the secondary highway reconstruction and extension project is less, and the early scenic spot roads in our country are mostly second-class or below roads. The design of this kind of road reconstruction and extension project, in addition to the difficulties in the conventional highway reconstruction and extension, the requirements of environmental protection and landscape creation are particularly high. Therefore, it is necessary to study the road reconstruction and extension technology of this kind of scenic spot based on the research results of highway reconstruction and extension technology. Based on the national highway 321 Yangshuo to Guilin extension project no. 1, this paper studies the route design technology, original road condition evaluation and utilization technology and landscape design technology of the project of "two to one" in this scenic spot. The results show that the route design of "two to one" in the scenic area has achieved better implementation results, similar engineering design can follow "pay attention to environmental protection along the line, environmental protection line selection", "reduce interference to key scenic spots, civilized route selection", There are six design essentials, such as "selecting reasonable widening way and carefully wiring", and the evaluation method of road condition developed by the project is reliable, that is, the evaluation of the original pavement use condition of the second grade highway reconstruction and extension project, Under the condition of limited equipment funds and other conditions, the semi-empirical and semi-theoretical evaluation method can be used to measure the pavement bearing capacity or structural strength, and to combine closely with the pavement disease characteristics of the project. The evaluation results can be used as the basis for pavement reconstruction and design. For the design of road pavement utilization scheme, such as upgrading and upgrading, if the original road needs to be adjusted, Firstly, the minimum elevation value of pavement theory should be determined according to the road condition, and then the pavement utilization scheme of each section should be designed according to the condition of horizontal and longitudinal adjustment. It is feasible to creatively preserve part of the original road trees in the middle or side zone after expansion, and good landscape and environmental protection results have been achieved. Good results have been achieved. This paper studies the key design techniques of the project, summarizes the main points of the route design of the project, and summarizes the evaluation method of the road surface condition of the reconstruction and extension based on the key indicators of necessity. This paper puts forward the design method of longitudinal section based on the minimum elevation value of theory, and puts forward the principles and methods of landscape design of highway reconstruction and extension of scenic area with "protection and utilization" as the core. The research results can be used as reference for similar projects and have great practical significance.
【學位授予單位】：重慶交通大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U412.3

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本文編號：1854646