Lin Lan expressway Construction-Cost
Lanlin expressway 200 1 10 started construction, which attracted much attention due to the large number of bridges and long tunnels. Lin Lan expressway, with a total length of 92.69 kilometers and an estimated total investment of 3.264 billion yuan, is a standardized two-way four-lane expressway. This highway is the starting section of National Highway 2 12 Lanzhou-Chongqing Highway, the western inter-provincial passage from Lanzhou to Mohan Port, and the southern exit of Lanzhou. The terrain and geological conditions of the project are extremely complicated. Among the numerous expressway projects in Gansu, it has created. Among them, the new Qidaoliang Tunnel is 4070 meters, the Lujiagou Bridge with piers as high as 77.238 meters, and the Lintao Viaduct with a total length of 1.047.08 meters. More importantly, traffic construction plays a prominent role in promoting social and economic development.
The total length of Lin Lan expressway is 95.3 12km, and the total width of highway subgrade is 24.5m. The total width of separated subgrade is 2× 12.5m, and the design speed is 80km/h. It is a fully interconnected, fully enclosed and controlled four-lane expressway. Main engineering quantity: subgrade earthwork is 24.329 million cubic meters. There are 0/2 large bridges 16 medium bridges16 small bridges, 273 culverts, 5 interchanges and 7 separated interchanges 17. There are 7 toll stations (2 toll stations on the main line), 1 service area, 2 maintenance work areas, 2 parking areas, 1 monitoring information analysis center and 2 monitoring communication offices. Traffic signs, marking lines, median guardrail, roadside guardrail and isolation guardrail are set up along the whole line. Economic benefit forecast:
The prospective traffic volume of this project is 23,000 metric tons/day, the financial net present value is 1.4847 million yuan, the economic benefit-cost ratio is 1.7, and the internal rate of return is 1.25%. The construction period of the project is 3 years, from 200 1 to 2004.
Project progress:
On March 2, 20001day, the Ministry of Communications approved the project proposal with the document number of 2000] 147, and submitted it to the planning and development on March 6, 20001/KLOC-0.
The feasibility study report was approved by document [2000]603. The preliminary design was approved in March 20001year, and the construction started in March 20001year. Cooperation mode: joint venture and cooperation, and some sections are built by BOT. Project owner: Gansu Yuanda Road Industry Group Co., Ltd. ..
Lanlin expressway Construction-Bridge Length
This tunnel with a length of 4003. 19 meters (excluding ancillary parts) has not only become the longest highway tunnel in Gansu, but also won praise for its fast construction progress, good quality and no safety accidents during construction.
Xinqidaoliang Tunnel is one of the control projects of Lin Lan Highway. The tunnel is located in the uplift zone at the southeast end of Qilian Mountain, and the geological situation is extremely complicated. During the whole construction process, China Railway 12th Bureau, which undertook the project, overcame unfavorable geological conditions such as low surrounding rock strength, various types and frequent underground water gushing, and adhered to the principles of weak blasting, short footage, strong support, diligent investigation and tight lining, which was completed two months ahead of the owner's plan. Lujiagou Bridge is 399.8 meters long with a total investment of 32.25 million yuan. Its pier height is 77.238m, the main span115m, and the bridge deck height is 84m. It is the first Gao Qiao in Gansu Province. The superstructure of the main bridge of this bridge is a continuous rigid-frame box girder with a maximum continuous length of 243 meters, and the lower part is a double thin-walled pier with solid transition piers between the main approach bridges. It is one of the most complicated and difficult bridges in expressway. The bridge has created four best in the construction of expressway in Lin Lan and expressway in Gansu: the highest pier is 77.238 meters, ranking first in Gansu; For the first time, a long-span continuous rigid frame bridge was adopted on the curve with a small radius of 600, which was the first in Gansu. The diameter of bored pile is 2m, the deepest is 42m, and the weight of single beam is about 85t, which is known as the highest in expressway, Lin Lan.
The Construction of expressway in Lin Lan —— Significance
According to reports, expressway, Lin Lan has complex geological conditions and high technical difficulty, creating the "three firsts" in the field of highway construction in our province. Among them, the new Qidaoliang tunnel with a total investment of more than 400 million yuan is the longest highway tunnel in our province at present, with a single tunnel length of 4070 meters; The magnificent Lintao Bridge is the longest highway bridge in our province at present, with a length of 1047.08 meters and 52 holes. There is also Lujiagou Bridge with the highest pier of 77.238 meters, which is the highest highway bridge in our province at present. The opening of 1 hour economic circle in expressway, Lin Lan, not only shortened the distance between Lanzhou, the provincial capital, and Lintao, but also improved the expressway network with Lanzhou as the center and four-way radiation driving the surrounding areas, which greatly promoted the economic development of Lintao County, which is known as the "hometown of flowers and trees in China".
In addition, the opening of Lin Lan Expressway announced the formation of an 1 hour economic circle with the Lanzhou Economic Center as the center and the radius of 100 km, connecting Baiyin, Zhongchuan, Yongdeng, Yongjing, Lintao, Yuzhong, Gaolan and Dingxi as a whole, which will accelerate the logistics, people flow and information flow in these areas, promote resource development and improve investment.
The above is the introduction of CBI Zhong Da Consulting Company to the construction of expressway in Lin Lan. For more information about expressways, please pay attention to the architectural knowledge column of Zhong Da Consulting.
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