According to the data of CBI Construction Network, Dechang expressway route passes through Beijing (Dezhen) in Dexing City, leping city, anhui-jiangxi railway and Wannian County to yingtan Expressway in the west, enters Jinxian County of Nanchang City through Poyang County, yugan county River and cross-Xinjiang River, and builds a bridge at Jinxian Lake to enter Nanchang County. * * * passes through 8 counties (cities, districts) of the above three districts and cities, and the end of the route is located in Gaoxin County of Nanchang City.
Dechang expressway was approved by Jiangxi Development and Reform Commission on June 5438+065438+ 10, 2008, and was included in the capital construction plan of key highways in Jiangxi Province. The starting point of the line is located in Xingang Town, north of Dexing, Shangrao, Jiangxi, connecting Dexing, which is in operation, to Expressway and Wuyuan, and to Qiandao Lake (Dezhen) in Hangzhou, Zhejiang Province.
Dechang expressway Construction-Architectural Features
technical innovation
The left picture of Zhaolin Viaduct in AP2 contract section of Dechang expressway Project Office successfully completed the paving construction of the test road of the project "Study on deicing mechanism and key technologies of salt-stored asphalt pavement of southern highway bridges". This technology is adopted for the first time in southern China, and it is of great significance to study the driving safety of expressway in southern winter frozen areas.
Dechang Expressway Project and Southeast University jointly carried out the work of "Research on Deicing Mechanism and Key Technologies of Salt-stored Asphalt Pavement of Southern Highway Bridges". The salt storage material added to asphalt mixture can be gradually separated from asphalt concrete by capillary action when the road surface is covered with snow and frozen in winter, so as to reduce the melting point of ice and snow, and melt the ice and snow actively. It is reported that this method of melting ice and snow has been applied in northern China and achieved good results. The Dechang high-speed test section adopts salt storage materials imported from Switzerland. After special treatment, they are alkaline when melting ice and snow, and will not bring harm such as corrosion of steel bars.
The builders of Dechang expressway attach great importance to the innovation of construction technology. In the process of innovation and popularization of various technologies and construction methods, T-shaped beam slab prefabrication has been successfully popularized in the whole line, that is, T-shaped bridge beam slab is prefabricated in a large site to ensure the quality of beam slab prefabrication. In the process of steel bar binding before T-beam prefabrication, the method of marking on the base of beam slab is adopted, which is convenient for supervisors and managers to see the concealed works such as the number of steel bars at a glance. In the process of T-beam prefabrication, the rubber tube grout stopping technology uses the tension of rubber tube to make the bottom die and side die of T-beam closely fit, which has a good grout stopping effect and comprehensively improves the internal quality and appearance image of precast beam. At the same time, the spray curing technology of precast beam improves the curing quality of precast beam to a new level. Through the construction of the chisel hammer, the details of the chisel area are ensured, and the blind spot of concrete chisel around the steel bar head is eliminated. In addition, in the process of small-scale structure construction, we changed the previous practice of using small-scale mixing equipment to mix concrete sporadically, set up large-scale mixing yards throughout the line to mix concrete centrally, and then use pump trucks to transport and supply concrete centrally, so as to realize the industrialization of concrete production, improve the mixing quality of concrete and ensure the construction quality of small-scale structures.
Environmental protection building
In the construction of Dechang expressway, in order to avoid the damage of local villagers' interests caused by the untimely connection between water system and roads, and reduce the disputes between roads and places caused by this, the Project Office has deployed waterway connection for many times. Even when the permanent water connection project is difficult to implement, temporary water connection measures are taken to meet the needs of smooth water system and roads. There is no problem that agricultural production is affected by inadequate drainage engineering construction, and there is no problem that major geological disasters, environmental pollution and soil erosion are caused by inadequate protection.
Dechang expressway Construction —— Significance
The construction of Dechang Expressway will greatly shorten the driving distance between Nanchang, the provincial capital, and the northeast of Jiangxi, Jiangsu, Zhejiang and Shanghai, and form another east-west expressway in Central China, effectively alleviating the driving pressure of Liwen and Expressway in the Jiangxi section of Shanghai-Kunming Expressway. Promote the economic development of Jiangxi, improve the travel conditions in northeast Jiangxi, and further increase the road network density in expressway, Jiangxi.
The construction of Dechang Expressway will greatly shorten the driving distance between Nanchang, the provincial capital, and the northeast of Jiangxi, Jiangsu, Zhejiang and Shanghai, and form another east-west expressway in Central China, effectively alleviating the driving pressure of Liwen and Expressway in the Jiangxi section of Shanghai-Kunming Expressway. Promote the economic development of Jiangxi, improve the travel conditions in northeast Jiangxi, and further increase the road network density in expressway, Jiangxi. With the approval of "Planning of Ecological Economic Zone around Poyang Lake in Jiangxi Province" by the State Council in June 5438+February 65438+February 2009, the construction of ecological economic zone around Poyang Lake in Jiangxi Province officially rose to a national strategy, and the significance of Dechang expressway became more prominent.
Tourism significance
Due to the rich tourism resources in the affected areas of Dechang expressway, it has greatly promoted the development of tourism in Jiangxi Province, such as Hangzhou-Huangshan-Wuyuan-Jingdezhen-Jiujiang-Nanchang, Anqing-Jingdezhen-yingtan, Hangzhou-Shangrao-yingtan-Nanchang, which are the most potential tourist economic trunk lines in China. The opening of Dechang Expressway has directly shortened the space-time distance in the above areas. Moreover, within a radius of 300 kilometers from Jingdezhen, there are tourist hotspots such as Lushan Mountain, Huangshan Mountain, Jiuhua Mountain, Wuyishan Mountain, Sanqingshan Mountain, Longhushan Mountain, Poyang Lake, Qiandao Lake, Taiping Lake, Nanchang, Jingdezhen, Shexian County and Quzhou, and Wuyuan Cultural and Ecological Tourism Zone. Therefore, the completion of Dechang Expressway will enable the central and western regions of Jiangxi Province to reach the above scenic spots and tourist cities quickly.
economic meaning
The completion and opening to traffic of Dechang expressway is of great significance to the construction of expressway Circle in Poyang Lake Ecological Economic Zone and the "three verticals and four horizontals" expressway network in the whole province. The Twelfth Five-Year Plan period is a crucial period for the mileage of expressway in Jiangxi to exceed 5,000 kilometers. It is necessary to basically realize the county-county expressway, and form a fast channel from the provincial capital to the districts and cities for 4 hours and to the surrounding provincial capital cities for 6 to 8 hours.
Dechang Expressway took the lead in implementing a series of new technologies and processes, such as wind, light and electricity integration, rubber hose slurry stopping and so on, which effectively saved the construction cost. It is of great significance to improve the network structure of expressway, Jiangxi, especially the Poyang Lake Ecological Economic Zone. Dechang Expressway has greatly narrowed the distance between Jiangxi and the Yangtze River Delta, and shortened the distance from Nanchang, the provincial capital, to Hangzhou and Shanghai by nearly 80 kilometers.
The above is the introduction of Zhong Da Consulting on the construction of Dechang expressway. For more information about expressways, please pay attention to the architectural knowledge column of Zhong Da Consulting.
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