Longcheng Expressway is an important part of the national highway, and it is an important section of the national highway from the capital Beijing to Kunming, the capital of southwest Yunnan.
brief introduction
Longcheng Expressway starts from Longbai, Yuci District, Jinzhong City, Shanxi Province, and connects with Taijiu Expressway in Shanxi section of G20 Yin Qing Expressway. It connects with Taichang Expressway in the middle of Shaanxi section of G55 Erguang Expressway, and ends in Zhao Cheng, Qixian County, and connects with Dayun Expressway. It is an important strategic passage from the central part of Shanxi Province to the Beijing-Tianjin-Hebei economic circle around the Bohai Sea in the west, and it is the "three verticals and eleven verticals" of Shanxi expressway network.
Longcheng Expressway, with a total length of 7 1.588km, runs through the hinterland of Jinzhong Plain in Shanxi Province and passes through Yuci District, Taigu County and Qixian County 14 townships. It was completed and opened to traffic at the end of 2065,438+065,438+0. Approved by the Shanxi Provincial Development and Reform Commission, the whole line is designed according to the standard two-way six-lane highway, with a subgrade width of 33.5m and a design speed of1.20km per hour. It is the first high-standard two-way six-lane expressway in Shanxi Province, with an estimated investment of 4 billion yuan. Longcheng Expressway is an important part of the expressway network in Shanxi Province.
The completion of Longcheng Expressway can effectively alleviate the traffic pressure of Taiyuan South Ring Expressway and Fenhe River Basin, and it is also the outer ring expressway of Taiyuan Economic Circle and Jinzhong Urban Agglomeration. The construction of Longcheng Expressway is of great significance for realizing the urbanization goal of "one core, one circle and three groups", enhancing the radiation function of taiyuan metropolitan and promoting the inclusive economic growth of Jinzhong City.
technology
Longcheng Expressway is the first expressway built by the municipal government in Shanxi Province, and it is the first time in Jinzhong City in terms of investment scale and project management. To this end, the Jinzhong Municipal Party Committee and the Municipal Government attached great importance to it and invested great energy. In the construction of Longcheng Expressway, it is inconvenient to borrow soil, the construction technology on wet soft soil foundation is difficult, and high embankment filling is needed to cross gully. The project construction party has repeatedly studied and demonstrated and found a way to cure the disease one by one. Because the project runs through Yuci, Taigu, Qixian and other cities and counties in Jinzhong Basin, the terrain is flat, the land is fertile, and the road network and economy are relatively developed. Especially in Taigu and Qixian, all roads are basic farmland, so it is impossible to borrow soil nearby. In order not to destroy cultivated land, the construction unit had to transport soil from mountainous and hilly areas 25-30 kilometers away when filling the roadbed, and the transportation cost alone increased by 65.438+0.3 billion yuan.
Longcheng Expressway adopts a variety of new technologies and new processes, and strives to build the best, smoothest and most durable expressway. At the asphalt pavement paving site, Chang Derong, Minister of Engineering, told the reporter that the project adopted a brand-new pavement paving technology-SBS modified asphalt synchronous macadam seal technology for the first time. Generally speaking, this technology is to add a flexible connection layer between the base and the pavement. With this layer, the total thickness of pavement is 2 cm higher than that of ordinary pavement, and the cost per square meter is increased by more than ten yuan. However, this layer not only increases the adhesion between the upper and lower layers, but also has the function of stopping water, and can effectively disperse the pavement pressure, prevent the pavement damage caused by the braking of large cars, such as traffic, wrinkling and rutting, and increase the smoothness and comfort of the road.
The above is the introduction of Zhong Da Consulting to Longcheng Expressway. For more information about expressways, please pay attention to the architectural knowledge column of Zhong Da Consulting.
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