绕城高速公路改扩建项目规划与设计的实例分析

发布时间：2018-05-28 07:48

本文选题：改扩建 + 规划　；参考：《公路工程》2017年05期

【摘要】：通过分析绕城高速公路的功能、作用及规划设计原则,并以辽宁沈阳某绕城高速公路的改扩建为例,对其具体规划和设计进行了分析。根据该绕城高速公路的功能定位,扩建按照全立交、全封闭的高速公路标准进行。全线按路基全宽41 m,八车道进行扩建。设计速度从原来的121 km/h调整为102 km/h。在绕城高速的建设过程当中有很大一部分的建设是对道路进行加宽,加宽主要是对称的,通过设置一部分的支挡结构来减少对于道路的拆迁的数量,主要的目的还是为了能够实现双对称的加宽。当遇到特殊的路段的时候可以考虑单侧的加宽。原路面以加铺为主,处理原路面的病害,按照路线纵断,对其高差进行设计,找平层后铺设≥5 cm,加铺沥青玛蹄脂碎石3.2 cm。新增互通立交3处,全线增设服务区,在改扩建后,全线共有120条道路可通行机动车。
[Abstract]:This paper analyzes the function, planning and design principle of the highway around the city, and takes the reconstruction and extension of a highway around the city in Shenyang, Liaoning Province as an example to analyze its specific planning and design. According to the functional positioning of the roundabout expressway, the expansion is carried out in accordance with the expressway standard of full interchange and complete closure. According to the full width of the roadbed 41 m, eight lane expansion. The design speed was adjusted from the original 121 km/h to 102 km / h. In the construction process of the high speed around the city, a large part of the construction is to widen the road, the widening is mainly symmetrical, by setting up a part of the retaining structure to reduce the number of road demolition. The main purpose is to be able to achieve double symmetry widening. When you encounter a special section of the road, you can consider one side of the widening. The original pavement is mainly overlaid, the disease of the original pavement is dealt with, the height difference of the pavement is designed according to the longitudinal break of the route, the leveling layer is laid more than 5 cm, and the asphalt mastic macadam is laid 3.2 cm. Three new interchange, the entire line additional service area, after the reconstruction and extension, there are 120 roads passable motor vehicles.
【作者单位】：中铁第四勘察设计院集团有限公司;
【分类号】：U418.8

【相似文献】