Bridge event: Shantou Niutian Yangyang Bridge main bridge successfully combined the dragon

01 Dongguan Banhai Bay Bridge is officially opened to traffic

On June 30, the Dongguan Bay Bay Bridge was officially opened to traffic. The bridge is the "hard Unicom" foundation for Dongguan to further connect the region to the "Great Artery" and participate in the construction of the "Golden Inner Bay".

The total investment of the Binhai Bay Bridge is 950 million yuan, which lasted for more than two years. It is the largest span and the widest in the bridge deck in China. After the bridge is opened to traffic, the citizens driving the two sections of the two sections of the Chair Bay Bay and the Shajiao Peninsula of the Binhai Bay New Area will be shortened from more than 20 minutes to five minutes, further unblocking the two "core areas of urban areas in Dongguan City and Binhai Bay New Area. "Unicom's important way will effectively promote the accelerated circulation of various resource elements and the attraction of the carrying capacity of the platform. The foundation of the" Golden Inner Bay "pattern of 100 kilometers of the Pearl River Estuary will be more stable.

The Dongguan Bay Bay Bridge is currently the first bridge in the world to use steel shell concrete -the main tower structure of the steel mixed tower. The total length is 973.6 meters, of which the main bridge is 520 meters long, which is two -way eight lanes. The cross section of the steel shell is a round curve, and the tower height direction is combined with seven power curves. The main part of the shell is "saddle shape", which is extremely difficult to create.

In terms of design, the bridge uses the "Silk Road Light and Magnolia Blossoms" as the design concept, and combines the coastal landscape with the cultural culture of Dongguan City to further optimize the comprehensive urban environment of the coastal Bay. During the day, the Coastal Bay Bridge greeted the spring breeze of the Greater Bay Area with an open posture of magnolia; at night, it would become a beacon on the New Silk Road of the Greater Bay Area. The tower height is 149.8m and consists of 32 hanging sections; the main bridge span combination is 60+200+200+60m, and the steel box beam structure is a scaled steel box beam, which consists of 57 sections. The Binhai Bay Bridge not only speeds up Dongguan in traffic, but also helps Dongguan and Binhai Bay New District to increase their influence and popularity in the Greater Bay Area. (Source: CCTV)

02 Shantou Niutian Yangyang Bridge Main Bridge Successful Heilong

On June 30, with the precise connection of the last section of the steel truffle beam with both sides, the main bridge of the Niutianyang Bridge was successful, marking the successful control node of the key control nodes of the Niotian Yangyang fast channel in Shantou.

The Niotian Yangtze Channel is a fast channel connecting the cross -strait of Shantou Rongjiang to the north and south sides of the north and south of Guangdong. It has a total length of 15.8 kilometers and a main design speed of 100 kilometers per hour. It is a major transportation infrastructure project in Guangdong and Shantou.

Niutian Yangyang Bridge is an important part of the Niutian Yangyang Expressway. The main bridge is 955 meters long and the main span is 468 meters. The main tower in the two water is 182.9 meters. It is designed as the characteristics of the local characteristics of Chaoshan and the shape of Xianglu. It is currently the highest and largest span double tower double cable steel truss cable bridge in eastern Guangdong.

The main bridge of the Niutian Yangbridge has a total of 63 plate trustees with a sideline trussee binding to the steel truss section. The total steel beam weighs 26,000 tons. By hanging up the tensor 60 pairs of cables arranged in a fan -shaped layout to ensure that the rigidity and accuracy of the main beam meet the design requirements. During the construction of the main bridge steel truffle beam, we must first accurately adjust the overall axis and high -end steel truss beams on both sides of the north and north banks, and then slowly lift the dragon section and the cantilever ending through the beam crane. (Source: China Daily)

03 Ten Dan High Speed ​​Danjiangkou Reservoir Bridge is expected to penetrate in August

At present, the world's largest span -part partial anchor -type cable bridge, the Danjiangkou Reservoir Bridge of the Shixia Expressway High Speed ​​High Speed ​​High Speed ​​High Speed ​​High Speed ​​High Speed ​​Speed, has entered the construction sprint period. It is expected that the full bridge will be fully opened in August. As the economic channel, people's livelihood channel, and landscape channels for the people along the line, after the project is completed, the three major scenic spots of Laojun Mountain, Danjiangkou Reservoir and Wudang Mountains in Luoyang, Henan will be built. The urban agglomeration of "Xiang Shi Sui" is of great significance.

The Danjiangkou Reservoir Bridge of the Shixia Expressway is the world's largest span -part -part -part anchor -type cable bridge, and it is also the world's largest span steel mixed combination beam. The Bridge is located in Liangshuihe Town and Longshan Town, Danjiangkou City, Hubei Province. It spannates the source of the Danjiangkou Reservoir from the South Shui and North Diversion Middle Line. The bridge is 1076 meters long, the main span is 760 meters, and the main tower is an H -shaped structure.

Relying on the scientific research and innovation platform of the contracting unit, the Bridge and the "Steel Mixed Combination Coriander" used and used to avoid the pollution of the Danjiangkou Reservoir; The construction quality of the bridge pile foundation; innovatively developed the "ground anchor -type hybrid beam cable -keeping bridge anchor bridge into a set of cracking construction methods", which significantly improves the durability and construction quality of the box -type bridge. The development of development and larger span bridge type exploration provides reference experience.

At the same time, the project team also adheres to the concept of "green" development, strictly implements the environmental protection requirements for Danjiangkou Reservoir, and is treated with water for production water through the input of sewage treatment equipment to prevent sewage discharge. Concentrated recycling and disposal of things; reducing dust pollution on the use of timely coverage of naked soil areas, dusters to reduce dust, and water dust removal in construction roads, and achieve the "green Danjiang" construction goals with zero pollution and zero emissions. (Source: Beijing Daily)

04 04 Jiangxi Ganzhou's first double -layer landscape bridge The main bridge of the Longlong Bridge in Heilong, June 30, the main bridge of the Longlong Bridge in Ganzhou City, Jiangxi Province smoothly went to the dragon. The bridge is the first double -layer landscape bridge in Ganzhou. It is expected to open to traffic in March 2023. The total length of the Longlong Bridge is about 1.74km. It is designed as the main road of the city and the design speed is 50km/h. The upper layer of the bridge is a two -way 6 -lane, with a total bridge width of about 26.5m; the width of the unilateral pedestrian channel in the lower layer is 2.5 m, the width of the non -motorized lane is 3.5 m, and the total bridge width is about 16.5 m. The main bridge adopts the three tower single cable surface continuous steel truffle beam dwarf tower cable bridge, and the span is arranged to 342 m.

According to reports, the fifth round of the main bridge of the Longlong Bridge was assembled for 88 meters, and the steel structure weighs about 2,000 tons. After the fifth round of assembly is completed, all the main bridge 396 meters will be formed (weighing about 8300 tons), and then the main bridge (including bridge tower) under the action of adaptive step equipment of 18 nodes, the beam tower "walk" 23 meters forward 23 meters forward 23 meters forward. , Complete He Long.

After the completion of the Longlong Bridge, the traffic connection between the Ganzhou Economic Development Zone and the Rongjiang New District will be strengthened, which will greatly facilitate the traffic travel of residents on both sides of the strait, further improve the structure of the Ganzhou city road network, enhance the image of Ganzhou city, and promote the "five of Ganzhou City. "District integration" is of great significance with economic and social development. (Source: People's Daily Online)

05 The longest tunnel peacock mountain tunnel throughout the entire line of Demon Highway in Yunnan

On June 30, the longest tunnel and heavy control project of Demon Highway, the criminal control project of the Peacock Mountain Tunnel, opened up the key "throat" of the Western Yunnan Tourism Ring Road and laid the foundation for the official opening of Demon Highway. The total length of the Demon Highway is 98.2 kilometers. It is the only highway connecting the Gongshan Dulong Nu Nu Autonomous County of Nujiang Launan Autonomous Prefecture in Yunnan Province and Deqin County, Diqing Tibetan Autonomous Prefecture. The peacock mountain tunnel has a total length of 2545 meters. It is located at the hinterland of Birro Snow Mountain at 3400 meters above sea level. It is directly connected to the two counties of Gongshan and Deqin. It is the highest altitude, the worst climate, and the most difficult to build a single project. After the tunnel penetrates, from Gongshan to Deqin no longer needs to cross the Peacock Mountain Mountain Pass at the Birro Snow Mountain Peacock Mountain at an altitude of 3882 meters, it is of great significance to enhance the economic and cultural exchanges between Deqin and Gongshan and consolidation and expansion of poverty alleviation.

The geological conditions of the Peacock Mountain Tunnel are complicated, the rock body is crushed and the stability is poor. The unique oblique structure and the abundant precipitation and snow mountain melody are replenished, so that the maximum amount of water in the tunnel reaches 91,000 cubic meters. The builders need to wear raincoats and rain pants to work in the "water curtain hole", with high safety risks and difficult construction. At the same time, the frequent geological disasters such as Blizzard, Mountain floods, falling rocks, and mudslides have caused more than 220 road interruptions since the project construction. In response to the various problems faced in construction, the project department adopts TSP advance geological radar to detect the front surrounding rocks, learn the water content of the rock body in advance, and take advanced drilling measures in time to release pressure, drainage drainage, prevent and deal with repeated emergence The tunnel surges, and has been equipped with more than 70 large -scale pumping equipment, 10.4 kilometers of pumping pipelines, and processing over 50 times of watering pipelines; road rescue and rescue teams have been established, equipped with loader, excavators and other equipment, 24 -hour patrol inspection, timely timely patrol inspection, timely timely in time Clean up snow, falling rocks and landslides to ensure driving safety and smooth flow, and finally achieve the smooth penetration of the tunnel. (Source: Yunnan Net)

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