本文選題：普通干線公路 + 改擴建　； 參考：《天津大學(xué)》2014年碩士論文

【摘要】：目前我國公路發(fā)展重兩頭輕中間，重視高速公路和農(nóng)村公路發(fā)展，而輕視普通干線公路發(fā)展，造成普通干線公路相對于社會經(jīng)濟發(fā)展需求明顯滯后。鑒于此，交通運輸部在“十二五”期間，重點進行普通干線公路路網(wǎng)結(jié)構(gòu)優(yōu)化升級，提高普通干線公路通行能力和綜合服務(wù)水平，以“五射、六縱、四橫”等十五條國道為重點開展普通干線公路改擴建工程，保證普通干線公路承上啟下的溝通、銜接作用。 普通干線公路改擴建項目不同于新建項目，受既有道路限制，需考慮對既有路線的擬合、新舊路基拼接、新舊橋梁拼接，還需考慮施工期間的征地拆遷、交通組織等對項目的影響。因此，干線公路改擴建項目面臨著遠比新建項目更為復(fù)雜的問題。 本文以G205（天津段）國道改擴建示范工程項目為依托，參考了G205國道其他省段改擴建的成功經(jīng)驗，并通過有限元軟件Abaqus、Midas-civil分別對路基和橋梁結(jié)構(gòu)進行空間計算分析，著重對普通干線公路的改擴建方案、新舊路基拼接、新舊橋梁拼接等關(guān)鍵技術(shù)進行了研究。提出了我國普通干線公路改擴建方案的設(shè)計原則和方法，通過對普通干線公路改擴建工程特點的分析，總結(jié)出新舊路基拼接和新舊橋梁拼接的關(guān)鍵技術(shù)及相關(guān)處理方案。
[Abstract]:At present, the development of highway in our country pays more attention to the development of highway and rural highway, but despises the development of ordinary trunk highway, which results in the obvious lag between the demand of ordinary trunk highway and the development of social economy. In view of this, during the 12th Five-Year Plan period, the Ministry of Communications and Transport focused on the optimization and upgrading of the network structure of the ordinary trunk highways, to improve the capacity and comprehensive service level of the ordinary trunk highways, with a view to "five shots, six columns," Fifteen national highways, such as "four horizontal", focus on the reconstruction and extension of ordinary trunk roads to ensure the communication and connection between the top and the lower of the ordinary trunk roads. The ordinary trunk highway reconstruction and extension project is different from the new construction project, which is restricted by the existing road, so it is necessary to consider the fitting of the existing route, the splicing of the new and the old roadbed, the splicing of the new and the old bridges, and the land requisition and removal during the construction period. The impact of traffic organization on the project. Therefore, the trunk highway reconstruction and extension project is faced with more complex problems than the new project. Based on the G205 (Tianjin Section) National Highway Reconstruction and extension Project, this paper refers to the successful experiences of other provinces of the G205 National Highway, and carries out the spatial calculation and analysis of the subgrade and the bridge structure by means of the finite element software Abaqus-Midas-civil, respectively. The key technologies such as the reconstruction and extension of the general trunk highway, the new and old subgrade splicing and the new and old bridge splicing are studied. This paper puts forward the design principles and methods of the general trunk highway reconstruction and extension project in China. Through the analysis of the characteristics of the general trunk highway reconstruction and extension project, the key technologies and related treatment schemes of the new and old subgrade splicing and the new old bridge splicing are summarized.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U418.8

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