机场南线9号标合同施工便道方案

一、 工程概况：
机场南线（京承高速公路~东六环路）公路第九号标段为机场南线与东六环路的枢纽立交，主要工程包括南北双幅的主线桥以及8条匝道桥，标段起止桩号为K16+688.32~K17+969.87，标段全长1.28km。跨越东六环路、李天路、馨港庄园路三条现况道路。合同总造价3.17亿元，合同工期18个月。
二、 施工便道规划
我标段施工便道分为东、西两部分，两部分以东六环路分界线，充分利用现况李天路、局部现况馨港庄园路，将施工便道向桥区施工便道范围内延伸，形成直通施工现场每个部位的施工便道系统，具体施工便道布设详细后附图示。整个施工便道初步计算长度为6.7km，在李天路交汇附近设置两个洗车处，自洗车处至水李天路处设置水泥路面进行过渡。
三、 施工便道结构设计
施工便道下部采用天然砂砾，表面铺筑石屑，便道宽度不小于6米，保证来往能够双向行驶，砂砾结构厚度30~50 cm以保证道路稳定性，表面铺筑石屑以能够覆盖砂砾、保证表面平整为原则。馨港庄园路东侧大棚范围内路面结构以砼路面为主，局部露土部位下部填筑
Airport Southern Line 9 contract of construction of sidewalk program

1, Project Overview:
Airport Southern Line (Chengde expressway ~ East Sixth Ring Road) Lot No. IX of the Airport Highway south line and the hub of East Sixth Ring Road interchange, major projects include the north-south main line of Twin Bridges and eight ramp bridge, beginning and ending Lot Stake for the K16 +688.32 ~ K17 +969.87, tenders length 1.28km. Across East Sixth Ring Road, Tian Road, Manor Road, 3 Xin Hong Kong the status of the road. The total contract cost of 317 million yuan, the contract duration of 18 months.
Second, construction pavement planning
I tenders construction detour into East and West parts of the two parts of the line east of Sixth Ring Road, take full advantage of the current situation Tian Road, the local status of Hope Manor Road, Hong Kong, the construction of pavement construction detour to the bridge area and extend the scope of formed through the construction site of the construction of each part of the system sidewalk, concrete pavement construction drawings show after laying more. Preliminary calculations throughout the construction detour length 6.7km, Tian Road intersection in the vicinity of two car wash Department, from car washing to water Tian Road Department Office of cement pavement transition.
Third, construction of pavement structural design
Lower use of natural gravel pavement construction, surface paving stone chips, pavement width of not less than 6 meters, to ensure two-way traffic to and from, gravel structure 30 ~ 50 cm thick in order to ensure the stability of the road, paving stone chip in to cover the surface of gravel, ensure the smooth surface in principle. Hope Manor Road, east of Hong Kong within the pavement structure in order to shed concrete pavements, filling the lower part of the local exposed soil