A municipal road Bridge works Construction organization design
The Qingyi Highway freight corridor is located in the west section of Xinyu urban area of Qingyi Highway. It is an important transportation corridor from Xinyu City to Fenyi County, and an important highway route for logistics transportation of large enterprises and units such as Saiwei, Xingang, Jiangli, etc. This section is a Class II highway built in 1995 according to the standards issued by the Ministry, with a subgrade width of 12.0 meters (pavement width of 9.0 meters, and soil shoulders on both sides of 1.5 meters), The pavement is cement concrete pavement. The starting mileage of this section is K0+000, and the ending mileage is K11+879.44, with a total length of 11.87944km. It mainly includes subgrade works, bridge and culvert structure works, crossing works, protection and drainage works, pavement base and pavement works, greening and environmental protection works. The contract section is designed according to three different technical standards; After the old pavement of K2+200~K4+500, K5+440~K7+400, K8+200~K8+920 sections is crushed, the asphalt pavement structure layer 4CM upper layer (AC-16C)+6CM middle surface layer (AC-20C)+10CM lower layer (AC-25C)+20CM5% water stabilized upper base layer+20CM water stabilized lower base layer is paved, with a total thickness of 61CM After the old pavement of K8+920~K11+879.440 section is crushed and petrified, the asphalt pavement structure layer is paved. The upper layer (AC-10C) of 4CM thickness+the middle layer (AC-20C) of 5CM thickness+the lower layer (AC-25C) of 7CM thickness M+20CM5%, the water stabilized upper base+18CM3.5% water stabilized lower base, with a total thickness of 55CM. After the pavement of K0+000~K2+200, K5+140~K5+440, K7+400~K8+200 sections is excavated, the asphalt pavement asphalt structure 4cm upper layer (AC-16C)+6cm middle surface layer (AC-20C)+10cm lower layer (AC-25C)+20cm5% water stabilized upper base layer+20cm3.5% water stabilized lower base layer is paved, with a total thickness of 61cm From K4+500-K5+140 section, continuous reinforced concrete is 22cm, continuous reinforced concrete is 15CM5%, and the total thickness is 35cm.