Han-Cai Expressway Construction-Standard
The project name refers to the notes of a single technical index.
Topographic plain hills
Highway grade expressway
Miliangshan to Hongmiao Section Hongmiao to Dwarf Section
Calculate the driving speed Km/h 100.
Forecast Traffic Volume (2027) Pcu/d 60627 43564
Subgrade width m33.526 Bridge and culvert are the same width as subgrade.
Lane width m 2×3×3.75 2×2×3.75
Width of central divider m 2 2
Clear width of bridge deck m 2× 16.25 2× 12.5
Load grade highway -I grade
The design flood frequency of extra-large bridge is 1/300, and the design flood frequency of large and medium-sized bridges and subgrade is1100.
Minimum radius of plane curve m 15 10
Minimum length of transition curve m 85
Minimum radius of vertical curve
Convex m 18500
Concave m 18000
Minimum length of vertical curve m 305
Maximum longitudinal slope% 1.57/ 1
Minimum slope length m 390
Advanced pavement grade (asphalt concrete)
Construction scale of Han-Cai Expressway
Unit recommendation scheme number project name main line remarks
Basic index
1 highway grade two-way six-lane expressway two-way four-lane expressway
2 calculate the driving speed km/h 100 100.
3 Traffic volume (passenger cars)/day 60627 43564 Average traffic volume in 2027
4. Expropriated land mu 1487.73 3738+0.
Second route
5 The total length of the route is km 12.60 1 22.305.
6 Minimum radius of plane curve m/1510/11734.809/1
7 Maximum longitudinal slope% 1.5 1.57
Three-subgrade pavement
8 subgrade width m 33.5 26
9. The estimated earthwork volume of subgrade is10,000m3146.35176.1,excluding interchange.
10 drainage protection project 1 10,000 m3 3.46 8.376 excluding interchange.
1 1 asphalt concrete pavement10000m2 20.377 35.19 excludes bridge deck pavement.
Siqiaohan
12 extra large bridge, m/ 1937/8 of 350/6 contract of Dazhong Bridge.
13 small bridge m/ Block 54/3 18/ 1
14 culvert tunnel 22 58
Five-way intersection
15 overpass 2 3
16 separated interchange 2 2
17 path 5 20
18 overpass 1 9
Six facilities along the route
19 service area 1
20 Toll Station 1 2 Main Toll Station 1, Ramp Toll Station 2
2 1 management center 1 merged with the main toll station.
22 1 merge with the main toll station in the maintenance center.
Han Cai Expressway Construction-Conditions
Topography and geomorphology
The route passes through the hilly area of Jianghan Plain in the middle reaches of the Yangtze River, and the geomorphic units mostly belong to Quaternary lake plain, alternating with ridges, denudation residual hills and denudation accumulation.
K0-K8 section belongs to I and II terraces and depressions crisscrossed by rivers in front of the post, mostly fish ponds and paddy fields;
K8-K3 1 section belongs to ridge landform, with rivers and depressions alternating;
K3 1 to the end, belonging to the front and back plain landform.
Meteorology and hydrology
The survey area belongs to subtropical continental monsoon climate. Four distinct seasons, sufficient sunshine, sufficient light and heat, rain and heat in the same season; Leng Xia is hot in winter and has a long frost-free period. The project area can be divided into East Lake water system and West Lake water system. The water level of the East Lake system is controlled by the East Lake Pumping Station, and the once-in-a-century water level is 21.16m; 300-year return period water level: 21.47m; ; The water level of the West Lake system is controlled by the West Lake Pumping Station. The once-in-a-century water level of the West Lake system is 23.05m, and the once-in-a-century water level is 23.28 m;
√ Bad Geology The bad geology of this project is mainly manifested in:
Soft soil, karst and expansive soil. The deep soft soil is about 1 1.854 km long, accounting for 34% of the line length. The main treatment methods are bridge crossing and soft foundation treatment. Karst and expansive soil have little influence on engineering construction. At present, Wuhan to Caidian mainly passes through Beijing-Zhuhai Expressway, National Highway 3 18 and Old Hansha Highway, with a journey of about 1 hour. After the completion, Wuhan citizens can reach Caidian in half an hour.
The above is the introduction of Zhong Da Consulting on the expressway construction in Han Cai. For more information about expressways, please pay attention to the architectural knowledge column of Zhong Da Consulting.
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