杭金衢高速公路改扩建工程设计方案研究

发布时间：2018-01-14 03:34

本文关键词：杭金衢高速公路改扩建工程设计方案研究　出处：《长安大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着我国社会经济的快速发展，许多早期建成的高速公路交通量增长迅速，其中部分路段的交通量已经或即将超出道路的最大通行能力。为保证区域经济社会发展的需要，使区域内的交通运输安全、畅通，对原有高速公路进行改扩建是必要的，也是紧迫的。本文以杭金衢高速公路为项目依托，研究了高速公路改扩建工程中遇到的一些诸如总体方案、局部方案比选等问题。 (1)根据杭金衢高速公路所在区域的交通网络和高速公路拓宽建设的特点，对杭金衢高速公路杭州红垦枢纽至金华互通段的总体拓宽方案进行分析研究，对新建复线方案和老路拓宽方案进行论述比较，并对利用老路拓宽方案进行多方案比选。最终确定扩建总体方案采用双侧拓宽的方案，局部路段视情况采用单侧拓宽。 (2)对于高速公路主线桥梁的拓宽，比较了桥梁拼宽的几种方案，，确定了上部结构连接、下部结构不连接的拼宽方式。对于桥梁拼宽的施工，对比分析了两种建设方案：便道方案和双侧超拼方案，并对不同方案研究了施工期间的交通组织步骤。对于分离立交的拓宽，提出了两种方案：老桥拆除重建；老桥两侧拼宽，下部的地方道路适当改造。最终为了考虑地方道路的发展，选用第一方案。对于互通立交的拓宽改造，选取一个互通作为例子，列出了三种方案，最终选择了主线及匝道能保证标准路基宽度，路基工程量较少，占地较省的方案。最后研究了项目拓宽过程中对交通的影响，分析了本项目在进行老路双侧拓宽、桥梁分离双侧拼宽及部分拆除重建、互通区的拓宽时能保证高速公路边运营边施工的可行性。 (3)最后进行了高速公路隧道拓宽方案的研究，分析计算了新岭隧道的车道需求数，并通过对新岭隧道、王市岭隧道进行了拓宽方案的研究，确定了长公路隧道的加宽车道数以及双侧加宽的方案，确定了浅埋公路短隧道挖除后设为路基的加宽方案。论文的方法、结论对今后的一些类似工程的决策和方案比选提供了可供参考的经验和行之有效的方法。
[Abstract]:With the rapid development of our country's social economy, the traffic volume of many early highway has increased rapidly. In order to ensure the need of regional economic and social development, the traffic volume of some sections of the road has or will exceed the maximum capacity of the road. It is necessary and urgent to rebuild and extend the original expressway. Based on the project of Hangjin-qu Expressway, this paper studies some general schemes encountered in the expressway reconstruction and extension project. Partial scheme comparison and other problems. 1) according to the traffic network of Hangzhou Jinqu expressway and the characteristics of highway widening construction, the overall widening scheme between Hangzhou Hongken hub and Jinhua interchange section of Hangzhou Jinqu expressway is analyzed and studied. This paper discusses and compares the new double-line scheme and the old road widening scheme, and compares and selects the multiple schemes using the old road widening scheme. Finally, it determines that the overall extension scheme adopts the bilateral widening scheme. Depending on the situation, the local road sections are widened on one side. 2) for the widening of main bridge of expressway, several schemes of bridge width are compared, and the way of joint of superstructure and non-connection of substructure is determined, and the construction of bridge width is also discussed. This paper compares and analyzes two kinds of construction schemes: the sidewalk scheme and the double-side overmatch scheme, and studies the traffic organization steps during the construction period for different schemes. For widening the separation interchange, two schemes are put forward: old bridge demolition and reconstruction; In order to consider the development of local roads, the first scheme is selected. For the widening and transformation of interchange, an example of interworking is selected. Three schemes are listed, the main line and ramp can guarantee the width of the standard roadbed, the subgrade works are less, and the land occupation is less. Finally, the impact on traffic in the process of project widening is studied. It is analyzed that this project can guarantee the feasibility of highway operation while widening the old road, widening the bridge separating the two sides and partly demolishing and rebuilding, and the widening of the interworking area can ensure the feasibility of the construction while the expressway is running. Finally, the highway tunnel widening scheme is studied, the lane demand of Xinling tunnel is analyzed and calculated, and the widening scheme of Xinling tunnel and Wang Shiling tunnel is studied. The number of widening lanes and the scheme of widening on both sides of the long highway tunnel are determined, and the scheme of widening the roadbed after the excavation of the short tunnel of shallow buried highway is determined. The method and conclusion of this paper can be used as a reference and effective method for decision making and scheme selection of similar projects in the future.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U418.8

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