Shanghai-Chengdu West Expressway, also known as Hubei-Chongqing Expressway, is an important part of the east-west trunk line of the "79 18" expressway network planned and constructed by the former state. Now it is part of G50 Shanghai-Chongqing Expressway, which was completed and opened to traffic in 2009. It is an important fast-track connecting Chongqing, Chengdu and other southwest cities in the central and eastern regions. Its construction plays an important role in improving the layout of highway network, connecting east and west traffic, promoting the economic and social development of the region and Hubei, and supporting the implementation of the national strategy of developing the western region.
Shanghai-Chengdu Expressway. : G42, starting from Shanghai in the east and reaching Chengdu, Sichuan Province in the west. It passes through Shanghai, Jiangsu, Anhui, Hubei, Chongqing and Sichuan from east to west. Shanghai-Chengdu Expressway runs through the east and west of China, with a total length of 1966 km. It is an important part of the "five vertical and seven horizontal" national trunk highway network planned by the state. The planned route consists of the former national trunk line from Shanghai to Hefei, Anhui, the branch line from Wanzhou, Chongqing to Chengdu, Sichuan, the national key highway from Shanghai to Wuwei from Hefei to Lu 'an, the branch line from Lu 'an, Anhui to Wuhan, Hubei, and the Hangzhou-Lanzhou line from Wuhan to Wanzhou, Chongqing. 201414 at 23: 58 on February 27th, the Chongqing-Yichang section of G42 Hu Rong Expressway was opened to traffic, marking the opening of the entire G42 Hu Rong Expressway.
Shanghai-Chongqing Expressway is the expressway from Shanghai to Chongqing, and the national expressway network of China is numbered G50. It starts in Changning District and Minhang District of Shanghai in the east, passes through Huzhou, Xuancheng, Wuhu, Tongling, Chizhou, Anqing, Huangmei, Huangshi, Ezhou, Wuhan, Xiantao, Jingzhou, Yichang, Enshi, Shizhu, Zhongxian and Dianjiang, and ends in Yubei District of Chongqing, with a total length of 1, 768km. The whole line was completed at 8: 00 am on June 5438+February 65438+September 2009 (except the left tunnel of Longtan Tunnel in Changyang, Hubei), and completed on June 5438+1October 65438+August 2009. With the completion of the left tunnel of Longtan Tunnel, the last control project in Hubei Province, the Shanghai-Chongqing Expressway was opened to traffic in both directions.
Significance of Shanghai-Chengdu-West Expressway Construction;
After the completion of the project, Hubei Province will form an expressway network with Wuhan as the center and Beijing-Zhuhai and Shanghai-Chengdu national highways as the main axis, connecting Hubei's "big triangle" economic zone and surrounding provincial capital cities. At the same time, the relatively developed coastal eastern region of China, the central region with booming economy and the western region that is implementing the "western development" are organically combined, which has become the traffic lifeline and economic link between the eastern and western parts of China.
The trunk line of Shanghai-Chengdu National Highway starts from Shanghai in the east and reaches the capital in the west, with a total length of about 2,200 kilometers. Up to now, 1.730 km has been built, leaving only about 470 km from Yichang Yangtze River Bridge in Hubei to Wanzhou in Chongqing to be built. As an important part of the trunk line of Hu Rong National Highway, Hubei Hurongxi Expressway is also an important part of the "five verticals, three horizontals and one ring" of Hubei Province's high-grade highway network, and it is an important fast-track connecting Chongqing, Chengdu and other big cities in East China and Central China to the southwest. The expressway passes through Yidu City and Changyang County and belongs to Yichang City. Badong County, Jianshi County, Enshi City and Lichuan City, which Enshi Prefecture belongs to. The main control points that the line passes through are Yuyangxi, Baishiping, Gaojiayan, Hejiaping, Baozhen, Lang Ping, Yesanguan, Gaoping, Hongyan Temple, Cuiba, Jixindian, Gengjiayan, Baiguoba, Longtanba, Qinglongzui, Liangwushan, Qingjiangyuan and Yuquankou. The whole line crosses the Qingjiang River system.
The Hu-Rong-Xi Expressway in Hubei is about 320 kilometers long, and it is divided into two projects: Yichang Yangtze River Bridge to Enshi Jixin (referred to as Enen Section) and Enshi Jixin to Lichuan Yuquankou (referred to as Li En Section). On August 20, 2004, Hubei Hurong West Expressway officially started construction.
Shanghai-Chengdu-West Expressway was put into trial operation on June 5438+February 65438+August 2009, and all toll stations along the way 15 were open. This also marks that the Shanghai-Chongqing Expressway, the east-west trunk line of the national expressway network, runs through the whole line, and Enshi, which is located deep in the mountains, will be more closely linked with the world outside the mountains.
Hubei Hurong West Expressway is an important part of Shanghai-Chongqing Expressway, with a total length of 320 kilometers. Yichang Yangtze River Bridge in the east, Hanyi Expressway, Lichuan Expressway and Chongqing Li Dian Expressway in the west. After opening to traffic, it only takes about 5 hours from Enshi to Wuhan and Chongqing.
Hubei Hurongxi Expressway Project is the expressway project with the largest investment, the most arduous project, the most complicated geology and the longest construction period in our province, and it is also one of the most difficult expressway projects in mountainous areas in China and even in the world. It took seven years from preparation to completion.
Hubei Hurong West Expressway adopts two-way four lanes with a design speed of 80 kilometers per hour.
"Wuhan Design", the most difficult 49 km section from Shanghai to Chengdu West, has created the best of four worlds.
The mountainous expressway with the most complicated terrain and the most difficult construction in China is Hurongxi. The reporter was informed yesterday; "Wuhan Design" has created four world records in the 49 km section from Lang Ping to Gaoping, the most difficult section in Shanghai-Chengdu West.
Hubei Hurong West Expressway starts from Yichang in the east and reaches Lichuan in the west. There are various unfavorable geological conditions along the expressway, such as landslides, rock piles, dangerous rocks, karst, karst collapse, underground rivers, collapses, fault zones and alluvial fans. This is the most complicated place in highway construction geology and the last section of Hu Rong Expressway.
Xi 'an Enshi-Lichuan section, which was built by CCCC Second Highway Survey and Design Institute, has a total length of102km, with 8 extra large bridges. Because of the overlapping of the whole line, the valleys are vertical and horizontal, and the terrain is very uneven, it is impossible to build a bridge in the steep valley, so it can only be crossed.
Badong Siduhe Bridge is located at the junction of Yichang City and Enshi City, Hubei Province, in Wuling Mountain area of western Hubei Province, with a height difference of 650 meters from the top of the tower to the bottom of the canyon. It is called the highest suspension bridge in the world, with a main span of 900 meters. Peng Yuancheng, vice president of the Second Public Hospital, said that for such a large span, each of the two main cables of the suspension bridge needs to bear 22,000 tons of tension. What pulls the main cable? On the plain, we can pour huge reinforced concrete "anchors" and pull cables.
There is no flat land in mountainous areas, and mountains should be protected. The second palace garden took the mountain as the "wall", dug a hole with a big bottom and a small top, and poured reinforced concrete to form a nail that could not be pulled out of the wall. The main cable was pulled on the nail and the problem was solved.
Longtan River Bridge in Yichang, Lang Ping is the tallest pier beam bridge in the world. Its main pier height178m. This kind of bridge looks like a "bench" and can't stand high on the mountain. But when you are tall, you will be "top-heavy." Under the action of wind, the bridge will shake and even collapse. The second public hospital repeatedly searched for "reasonable value"-not only to make the bridge stand firm, but also not to affect the foundation or the bridge above it because the pier is too strong.
It is reported that in the most difficult terrain of 49 kilometers, the Second Engineering Institute also designed the curved beam bridge with the highest pier in the world-Shuanghekou Bridge. Zhijinghe Bridge, with a span of 430 meters, is the largest through concrete filled steel tubular arch bridge in the world.