Jinan-Guangzhou National Expressway is the fourth vertical in the "79 18" network planned by the state, starting from Jinan, Shandong, passing through Heze, Shandong and Shangqiu, Henan, Fuyang, Lu 'an and Anqing, Anhui, Jingdezhen, yingtan, Cheng Nan, Ruijin and Heyuan, and finally reaching Guangzhou, Guangdong. The section of Jiguang National Road in Jiangxi is about 630 kilometers long.
Project overview
Ruixun Expressway is the last section from Ruijin to Xunwu in Jiangxi Province of Ji-Guang Expressway, with a total length of 123.956 km and an estimated total investment of 6.049 billion yuan. This section starts from Dabeitou Village, Wuyang Town, Ruijin City, Jiangxi Province in the north (the end of the construction drawing of yingtan-Ruijin section of the Ji-Guang Railway, the station number is K 145 1+476), and the route is basically near the 206 National Highway, passing through Wuyang Town and Xie Fang Town of Ruijin City, Wenwuba Town, Mazhou Town, Zhantang Township, Zhongcun Township and Zhoutian Town of Huichang County. 1 1 Towns such as Chengjiang Town, Jitan Town and nanqiao town in Xunwu County finally found Niuai Stone (the border between Jiangxi and Guangdong provinces) in nanqiao town, Xunwu County, and thus entered Guangdong Province, directly communicating with Meizhou City and Shantou and Shanwei port cities in Guangdong Province. The implementation of this project, together with the Yingrui Expressway under construction, will form another north-south passage in eastern Jiangxi, which will play an important role in perfecting the layout of the expressway network in this province and giving full play to the scale benefits of the expressway network. At the same time, the construction of the project will play an extremely important role in connecting Jiangxi with Guangdong, Jiangxi with Anhui and its northern provinces and cities, and connecting the three major economic zones of North China, East China and South China.
Main design criteria
The design speed of Ruixun Expressway is 100km/h, the overall subgrade width is 26 meters, and the separated half-width subgrade is 13 meters. The pavement is asphalt concrete pavement, the vehicle load is highway -I, the design flood frequency is extra large bridge 1/300, and the rest bridges, culverts and subgrade are1100. The peak acceleration of ground motion is 0. 1g, and 8-level seismic fortification measures are adopted.
Number of major projects across the line
The total length of Ruixun Expressway is 123.8 12 km, and the earthwork of subgrade is 24.895 million cubic meters, with an average of 20.1/10,000 cubic meters per kilometer. 2.945 million square meters of asphalt concrete pavement; There are 59 large and medium-sized bridges with a total length of 13072.8m, including 50 large bridges with a total length of 12399.4m, 9 medium bridges with a total length of 673.4m, 5 tunnels with a total length of 9731m; 4 Interchange; Separation interchange 18, with a total length of 947.72m; The protection and drainage project is 473,000 cubic meters.
Significance of project construction
The implementation of this project, together with the Yingrui Expressway under construction, will form another north-south passage in eastern Jiangxi, which will play an important role in perfecting the layout of the expressway network in this province and giving full play to the scale benefits of the expressway network. At the same time, the construction of the project will play an extremely important role in connecting Jiangxi with Guangdong, Jiangxi with Anhui and its northern provinces and cities, and connecting the three major economic zones of North China, East China and South China.
The implementation of this project is the need to develop Jiangxi's economy and promote Jiangxi's rise in central China. It is the need to promote the development and utilization of mineral resources and tourism resources along the line and accelerate the poverty alleviation of the old revolutionary base areas; It is also the need to improve external traffic and travel conditions, adapt to the rapid growth of traffic volume, and is an inevitable requirement for the rapid development of transportation industry.
Division of implementation stages of project construction
The construction of Ruixun Expressway is divided into three stages: the first stage is 2009. 12 to 20 10.9, *** 10; 2010.10-2011.4 is the second stage, ***7 months; The third stage is 2011.5-201.11,which is ***7 months. The total duration of the project is 24 months. The project was successfully completed and opened to traffic on February 28th, 201kloc-0/65438. There are five toll stations in this section, namely Huichang Toll Station, Junmenling Toll Station, Xunwu East Toll Station, Xunwu South Toll Station and Jiangxi-Guangdong Provincial Boundary Toll Station, among which Huichang Toll Station, Junmenling Toll Station, Xunwu East Toll Station and Xunwu South Toll Station have been opened and are in the charging operation state. At present, this section has good road conditions and less traffic, which is a very convenient and efficient path to the coast of eastern Guangdong.
Project management organization
According to the spirit of Notice of Jiangxi Provincial Department of Transportation on Establishing Ruijin-Xunwu Expressway Project Construction Office (No.217 of Jiangxi Provincial Department of Transportation), the Ruijin-Xunwu Expressway Project Construction Office was established. Combined with the characteristics of this project, in order to better carry out macro-control, make specific arrangements, and pay attention to both the key points and the overall situation, it is planned to establish a scientific and efficient organization with the project office as the management center and two management departments A and B. The project office is located in Huichang County, and the two management departments A and B are located in Huichang and Xunwu respectively. In order to facilitate the management and coordination between the contractor and the resident office and improve the work efficiency, the representative office of the supervision engineer (hereinafter referred to as the "representative office") is set up according to the management department. Each design unit shall set up a design representative office to carry out design tracking services. The project office is responsible for the overall control of project quality, schedule, cost, safety and environmental protection, as well as the management of project contracts and information. Each management department is responsible for the on-site management of various targets, handling specific daily work, and achieving "command first, timely handling".
Ruixun Expressway is divided into 20 subgrade construction contract sections and 6 pavement construction contract sections.
Building materials for roads along the line
The road construction materials along Ruixun Expressway are sufficient, with good texture, convenient mining and processing and good traffic conditions. Except for less upper materials, other conditions are good, which has little influence on the project construction and can meet the requirements of the project construction.
1, quarry
The areas that the route passes through are mainly Ruijin City, Huichang City and some towns and villages in Xunwu County. The rocks along the road are mainly granite, limestone, andesite, basalt, slate and sandstone. Qibao Yard (limestone) in Shazhouba Town, Ruijin City is suitable for subgrade protection and drainage engineering. Yunlongshan quarry in Xie Fang Town, Ruijin City is suitable for subgrade protection and building materials. The quarry in Shimen Village, Xijiang Town, Huichang County (limestone with a reserve of about 2 million cubic meters) is suitable for subgrade protection and structural materials; Huichang station pond basalt quarry can be used for pavement surface and base; Huichang Dafu quarry can be used for pavement surface and base; Jiaokeng quarry (coarse grained granite) in Xunwu county is suitable for subgrade protection and structural materials. Pingchang quarry (potash feldspar granite) in Xunwu county can be used as base and subbase; Xunwu quarry (potash feldspar granite) can be used for base and subbase; Changpu Guangjian Quarry (feldspathic sandstone) in Xunwu County can be used in middle and low layers and grass roots. The above-mentioned quarry has a large mining scale and convenient transportation conditions.
2. Sand
There are abundant sandstone materials used in the project along the line, mainly distributed in Ruijin Xie Fang. Huichang Xiangshui River; The South Bridge and Liu Che in Xunwu are pure in sand, well graded and convenient for mining and transportation.
3. Four major building materials
Steel, wood and cement can be purchased in Ganzhou, Ruijin, Huichang and Xunwu. This project is large in scale and needs high-quality building materials. On the premise of meeting the quality requirements and reasonable price, local materials are preferred for the three major building materials. Asphalt is extracted from asphalt depots in Nanchang and Ganzhou.
4. Water and electricity consumption for the project
There are abundant water resources along the line. Although the water quality is acidic, the engineering water can be taken locally. The local power resources are abundant and can meet the construction requirements of this project.
The above is the introduction of Zhong Da Consulting of CBI to Ruixun Expressway. For more information about expressways, please pay attention to the architectural knowledge column of Zhong Da Consulting.
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