For more than 20 years, the clouds and the moon, seven years of fierce battles at the mouth of the Pearl River, once flying in the ocean, dare to call the moat to change the way.
On June 30, the cross-river passage from Shenzhen to Zhongshan, a major national project, was opened to traffic for trial operation at 15:00 on the same day. After the opening of the Shenzhen-Zhongshan Corridor, the driving time between Shenzhen and Zhongshan will be shortened from two hours to half an hour, and in the future, it will only take 15 minutes from Nansha in Guangzhou to Zhongshan, and from more than 2 hours to one hour from Zhuhai and Jiangmen to Shenzhen. The toll standard for the whole line of the Shenzhen-Zhongshan Corridor is 66 yuan/standard train.
Driving guidance for the Shenzhong Corridor
The Shenzhen-Zhongshan Corridor connects Guangzhou-Shenzhen Yanjiang Expressway, Jihe Expressway and Guangzhou-Shenzhen Expressway in the east, Zhongkai Expressway, Guangao Expressway and Zhongshan Eastern Outer Ring Expressway in the west, and connects with Nanzhong Expressway (under construction) and Nansha Port Expressway.
▲ deep channel.
After the opening of the Shenzhen-Zhongshan Corridor, drive west from the Shenzhen side, the first exit on the west bank is the Cuiheng East Exit, which can go to Zhongshan Cuiheng New District, and go straight from the main line to Zhongshan, Jiangmen and Yangjiang, Maoming, Zhanjiang and other cities in western Guangdong, and after transferring to the Zhongshan East Outer Ring and Guangzhou-Macao Expressway through the Zhongkai Expressway, you can go to Guangzhou, Foshan, Zhuhai, Macao and other cities.
Drive eastward from the Zhongshan side, pass through the Shenzhong Bridge and the undersea tunnel, set up the first high-connection ramp in the tunnel under the water, and connect to the Guangzhou-Shenzhen Yanjiang Expressway after exiting, which can go to Humen, Qianhai and Hong Kong; After driving straight out of the undersea tunnel, the first toll station exit can go to Shenzhen Airport and Shenzhen Bao'an District; The independent line goes straight and connects to the Jihe Expressway, which can go to Shenzhen City, Longgang District, Huizhou, etc.; After going forward, you can transfer to Guangzhou-Shenzhen Expressway and go to Shenzhen City or Dongguan.
At present, Nansha is speeding up the construction of the Wanqingsha branch line of the South-Central Expressway, which is planned to be completed and opened to traffic within the year. After the opening of the South-Central Expressway, eastbound and westbound vehicles will be transferred to the Wanqingsha branch line through the Shenzhen-Zhongshan Corridor, which can reach Zhongshan city and Jiangmen and other places through the South-Central Expressway, and can reach Nansha, Panyu and urban areas in Guangzhou after transferring to the Nansha Port Express through the South-Central Expressway. The supporting Wanqingsha service area is planned and constructed as a gateway-type service area integrating transportation, tourism, leisure and business functions. After the opening of traffic, the driving time from Nansha to Shenzhen will be shortened to about 20 minutes.
▲On the Wanqingsha branch line of the South-Central Expressway and the Wanqingsha Interchange, overlooking the west artificial island of the Shenzhen-Zhongshan Channel.
Guangdong Communications Group reminds the majority of car owners: in order to ensure the safety of traffic, with the consent of relevant departments of transportation and public security, the Shenzhen-Zhongshan Corridor implements full-time prohibition measures for dangerous goods transport vehicles; During the trial operation of the Shenzhen-Zhongshan Corridor, temporary traffic control measures will be taken to prohibit the passage of four or more types of trucks (including all large transport vehicles) at all times.
Shenzhen-Zhongshan cross-city bus was officially put into operation
On June 30, with the opening of the Shenzhen-Zhongshan Corridor, the Shenzhen-Zhongshan cross-city bus was officially put into operation. From now on, 14 buses will be put into Zhongshan Expo Center every day and 10 buses will be put into Shenzhen Qianhaiwan Metro Station every day at the Talent Port in Cuiheng New District, with an average departure density of 15-20 minutes.
According to the operation arrangement, the Shenzhen-Zhongshan cross-city bus currently arranges two lines to operate, "Zhongshan Expo Center - Shenzhen Qianhai Bay" and "Zhongshan Cuiheng New Area Talent Port - Shenzhen Qianhai Bay" The first and last stations in Shenzhen are Qianhaiwan Metro Station, and the buses will drive to the north area of Qianhai DreamWorks for parking and rest after arriving at the terminal. This means that passengers who take the two lines can choose to get off at Qianhaiwan Metro Station (3 subway connections) and Qianhai DreamWorks North District (1 subway connection).
According to the requirements of road transport safety management, there is no station ticket for the Shenzhen-Zhongshan cross-city bus line, and one person is strictly implemented. The Shenzhen-Zhongshan cross-city bus line supports two modes of ticket purchase: online and offline.
Online: Use the "Shenzhen-Zhongshan Cross-city Bus Line" or "Shenzhen-China Bus Travel" mini program to purchase;
Offline: Support the ticket purchase at the manual window of the site and the coin mode on the bus.
The Zhongshan section of the Zhongkai Expressway and the Shenzhen-Zhongshan Corridor were opened simultaneously
On the morning of June 30, the opening of the Zhongshan-Kaiping Expressway (Zhongshan Section) was held in the torch service area of the Zhongkai Expressway, and it was announced that the Zhongshan section of the Zhongkai Expressway would be open to public vehicles at 3:00 p.m. on the same day.
It is reported that the Zhongkai Expressway is the "seventh horizontal" in the "12 vertical, 8 horizontal, 16 shots and two rings" of the expressway network planning in Guangdong Province, the Zhongkai Expressway connects the deep channel, starts from Zhongshan Cuiheng New District in the east, passes through a number of towns and streets in Zhongshan, passes through Taishan City, Xinhui District, Kaiping City, Enping City, and intersects with Kaiyang Expressway, the route is about 129.7 kilometers long, the estimated investment is about 45.2 billion yuan, and there are 24 interchanges, 3 service areas and 16 toll stations.
The Zhongkai Expressway project will be constructed in two phases, of which the Jiangmen section has been completed and opened to traffic on January 12, 2023, and the Zhongshan section with a length of about 44.1 kilometers has been completed and opened to traffic. After the simultaneous opening of the Zhongkai Expressway and the Shenzhen-Zhongshan Corridor, Shenzhen, Zhongshan and Jiangmen will realize the "first-line connection" of the expressway, forming a commuting circle of "half an hour in Shenzhen" and "one hour in the Bay Area", which will greatly strengthen the connection between eastern Guangdong, the Pearl River Delta and western Guangdong, effectively promote the rapid integrated development of the urban agglomeration of the Guangdong-Hong Kong-Macao Greater Bay Area, help the coordinated development of western Guangdong, and inject new vitality into the economic development of Guangdong Province and even the entire region.
With a total length of about 24 kilometers, the Shenzhen-Zhongshan Corridor is one of the most difficult cross-sea cluster projects in the world.
▲Night view of the Shenzhong Passage. New Express reporter Bi Zhiyi Guo Sijie/photo
Build the Great Wall under the sea
This installation process is down to the millimeter level
The Shenzhong Tunnel is about 6.8 kilometers long, including about 5 kilometers of immersed pipe section, and consists of 32 pipe sections and 1 final joint, making it the world's first two-way eight-lane steel shell concrete immersed tunnel.
In order to adapt to the technical characteristics of ultra-wide, widening, deep burial and large siltation of the submarine tunnel, the construction team of the Shenzhen-Zhongshan Tunnel innovatively proposed a new structure of steel-shell concrete immersed tunnel for the first time in China. This structure is the first large-scale application in the world, and the domestic industry chain is facing a blank.
The project team innovated independently, and took the lead in organizing more than 20 first-class scientific research teams to tackle key problems since 2015, overcoming the problems of steel shell manufacturing, self-compacting concrete preparation, pipe section pouring, testing and floating installation: developed an intelligent manufacturing production line, with an average monthly factory section of 165 meters long, 46 meters wide, 10.6 meters high giant steel shell capacity; Excellent new formula of self-compacting concrete, the world's first intelligent pouring robot and control system, to achieve a monthly prefabrication speed and 100% quality pass rate; The world's first immersed tube floating installation integrated ship has systematically innovated the floating installation process of giant pipe sections, and improved the docking accuracy from the internationally recognized centimeter level to the millimeter level, creating a world record for floating installation speed and accuracy.
There are twin islands in the sea
Refresh the construction record of "rapid island formation".
In order to realize the rapid transformation of bridge and tunnel traffic functions, the Shenzhong Passage has set up two artificial islands in the east and west on both sides of the undersea tunnel, and there are four ramps on the artificial islands in the middle of the tunnel, which is the first underwater interchange of the expressway in China.
The west artificial island is located in the Lingding Ocean, and the island body adopts a diamond-shaped design, with an area of about 137,000 square meters, equivalent to the size of 19 football fields. "We put 57 steel cylinders with a diameter of 28 meters, a height of 40 meters, and a weight of more than 600 tons, and used our independent innovation of 12 hammers to 'knock' it into the seabed at a depth of more than 20 meters, so as to achieve rapid island formation." Zheng Weitao, deputy chief engineer of the Shenzhen-Zhongshan Channel Project Department of CCCC First Harbor Bureau, said.
On May 1, 2017, the first steel cylinder was successfully vibrated and sunk, and the last steel cylinder was completed on September 18, 2017, and it took only four and a half months to realize the rapid formation of the west artificial island, setting a new construction record of "rapid island formation".
Located on the south side of Shenzhen Bao'an International Airport, the East Artificial Island has a land area of 343,800 square meters, equivalent to 48 international standard football fields, and 4 ramp tunnels are underwater.
On December 21, 2017, the construction of the East Artificial Island officially started, and the construction team successively overcame the problems of seepage prevention and water stop and uniform control of backfill in the construction stage of the ultra-deep and ultra-wide foundation pit cluster project in the sea area, and solved the problem of small deformation of the structure near the deep foundation pit construction. "When the main line tunnel on the island passes under the Guangshen Yanjiang Expressway Bridge, it is necessary to excavate a huge foundation pit with a length of more than 70 meters, a width of 46 meters and a depth of about 18 meters, and the nearest place is only 1.17 meters away from the existing bridge cap, and the construction safety risk is extremely high. We have innovated the process method, and adopted the servo CNC system that integrates CNC hydraulic technology and automatic monitoring technology to support. Liu Kun, executive deputy manager of the S03 contract section of the Shenzhong Passage Project of China Railway Tunnel Bureau, said that this system can monitor data in real time and automatically apply different axial forces to different support points to ensure the safety and efficiency of foundation pit construction.
The sea is a heavenly road
Increase the critical flutter wind speed to 88 m/s
The Shenzhong Bridge adopts the world's largest offshore suspension bridge with a main span of 1,666 meters, with a bridge deck of 91 meters, and is located in the open waters of the Pearl River Estuary and the frequent occurrence of strong typhoons, so the wind resistance problem is prominent.
"In the face of technical challenges, we have organized a number of universities and scientific research institutions to carry out parallel research for more than 3 years in a four-in-one way of production, learning, research and use, and developed a new combined pneumatic control technology, which has greatly improved the wind resistance of large-span steel box girder suspension bridges for the first time in the world." Chen Huanyong, an engineer of the Shenzhong Channel Management Center of Guangdong Communications Group, introduced that the project will increase the critical flutter wind speed of the large-span steel box girder suspension bridge from 70 m/s to 88 m/s, breaking the authoritative judgment of foreign countries in one fell swoop.
It is understood that in the face of the current global problems in the bridge field, such as the fatigue durability of orthotropic steel bridge decks and the anti-corrosion of the main cable of suspension bridges in the sea, the construction team of the Shenzhen-Zhongshan Channel innovatively proposed the detailed structure and welding technology of U-rib full penetration, which greatly improved the fatigue resistance of the steel bridge deck; Focusing on the key core technology that restricts the durability of the main cable of the suspension bridge, the team has developed a 6mm-2060 megapascal zinc-aluminum multi-alloy coated steel wire strand for the first time in the world, and its corrosion resistance is twice that of the previous hot-dip galvanized aluminum alloy steel wire.
Written by: New Express reporter Xu Lifu, Wang Tong, Liang Xian'an, Li Hongyun, correspondent Zhong Jiao, Zhong Xuan