普通干线公路加宽改扩建技术研究

发布时间：2018-06-01 21:49

本文选题：普通干线公路 + 改扩建　；参考：《天津大学》2014年硕士论文

【摘要】：目前我国公路发展重两头轻中间，重视高速公路和农村公路发展，而轻视普通干线公路发展，造成普通干线公路相对于社会经济发展需求明显滞后。鉴于此，交通运输部在“十二五”期间，重点进行普通干线公路路网结构优化升级，提高普通干线公路通行能力和综合服务水平，以“五射、六纵、四横”等十五条国道为重点开展普通干线公路改扩建工程，保证普通干线公路承上启下的沟通、衔接作用。普通干线公路改扩建项目不同于新建项目，受既有道路限制，需考虑对既有路线的拟合、新旧路基拼接、新旧桥梁拼接，还需考虑施工期间的征地拆迁、交通组织等对项目的影响。因此，干线公路改扩建项目面临着远比新建项目更为复杂的问题。本文以G205（天津段）国道改扩建示范工程项目为依托，参考了G205国道其他省段改扩建的成功经验，并通过有限元软件Abaqus、Midas-civil分别对路基和桥梁结构进行空间计算分析，着重对普通干线公路的改扩建方案、新旧路基拼接、新旧桥梁拼接等关键技术进行了研究。提出了我国普通干线公路改扩建方案的设计原则和方法，通过对普通干线公路改扩建工程特点的分析，总结出新旧路基拼接和新旧桥梁拼接的关键技术及相关处理方案。
[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.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U418.8

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