[Bridge Tunnel Innovation Week Exploration] Yibin Lingang Public Railway Dual -use Yangtze River Bridge

▲ Yibin Lingang Public Railway Double Yangtze River Bridge renderings

my card

Name: Yibin Lingang Public Railway Dual -use Yangtze River Bridge

Birthday: under construction

Native: Sichuan

Level: The total length of the bridge is 1742.1m, the main span 522m

Type: public iron dual -use steel box beam holding bridge

Features: The world's first highway and high -speed railway flat layers are arranged; it is also the widest and largest public railway two -purpose steel box beam for the world's widest.

Construction unit: Chuannan Intercity Railway Co., Ltd.

Design units: China Railway Second Hospital Engineering Group Co., Ltd. (led by the consortium), China Railway Bridge Survey and Design Institute Group Co., Ltd. (Member of the United Party)

Construction unit: Sichuan Highway Bridge Construction Group Co., Ltd. (leading party), China Railway Bridge Bureau Group Co., Ltd.

Yibin Lingang Public Railway Bridge is the first road and high -speed rail flats in the world. During the project construction, it is difficult to overcome the impact of the epidemic. The three major technical problems of the steel box beams have given the three major characteristics of "big, new, and fast" for this "world -class" bridge.

▲ Steel beam hanging

▲ Hanging in Helong section

My unique place

1.

In order to carry 4 -line high -speed trains and 6 -lane riverside vehicles, Yibin Lingang Public Railway Bridge Bridge reflects the characteristics of "large volume" on the underwater foundation, Sota, and beam sections.

1. Large basic volume. The amount of foundation pits of its inheritance of nearly 50,000 cubic meters can be filled with 22 standard swimming pools; in order to allow Sota to "stand firm" in the river, 66 pile foundations with a diameter of 2.5 meters are used. Connect 22,000 cubic meters of concrete inheritance, which is the largest deep -water embedded rock foundation with the largest volume upstream of the Yangtze River.

▲ The lower horizontal beam dressing bracket

2. Sota is large. The height of Sota is 250.8 meters, which is equivalent to more than 80 floors height. The total amount of concrete pouring reached 36,500 cubic meters. The best bridge has been built in the world.

▲ Sota and Candido

▲ Sota connection board is poured completed

3. The total amount of steel box beams is large. A total of 99 steel box beam sections of the bridge are 12 meters long, 63.9 meters wide, and 5 meters high. The maximum hanging weight of a single piece is 587 tons, and the total steel amount is about 47,000 tons, which is equivalent to 6.5 Eiffel Tower.

▲ The first steel box beam stand

▲ The first steel beam in the tower area hangs

2. New

In order to safely and efficiently complete the construction of the first domestic high -speed rail and highway flat layers, the backbone of the project team has formed a provincial mechanical and electrical coal system for the innovation studio in Hong Kong Labor Modeling Craftsmanship to innovate in technology and management. The key technologies have made major breakthroughs, filling the technical gaps in related fields in China.

1. For the first time in China, the "8"-shaped occlusal bite-double-wall steel combination coffin was successfully overcome the complex hydrological and geological conditions such as fast water flow, shallow water, and thick coverage of the upper reaches of the Yangtze River. Lay down a solid technical foundation.

▲ 8 -shaped bite pile double -wall steel combination cloakan

2. For the first time in China, the construction process of "Side Crossing Beams-Dwarf Store Starting Beams" is adopted. It is affected by seasonal shallow beach waters and cross-middle main channels. At the same time, in order to reduce construction environment pollution in the water, the project department's pioneering excavation on the side cross-side excavation A passage to ensure the transportation of side steel beams. At the same time, it is affected by the original river beach. The steel beams are stored with dwarf stents, which not only ensures that the side -side steel beam storage period is not affected by floods during the flood season, but also avoids large -scale dredging. Successfully conquered the problem of the upper and widespread steel box beams in the upper reaches of the Yangtze River.

▲ Completed by the sideline beam

3. For the first time in China, the "steel-concrete binding beam" process was adopted in the construction of heavy-duty railway, which filled a technical gap in the construction of high-speed railway bridge construction, and accumulated valuable experience for the construction of the same type of bridge construction in the future.

▲ Steel-concrete binding beam

4. For the first time, we use a number of intelligent systems in conjunction with the management measures to realize online and offline interconnection, and full coverage of security control. Such as the smart construction site APP (combined with the "Safety Points Management Measures" to achieve online deduction), smart access control system (real -time control of construction site dynamics), VR safety experience hall (the consequences of the body's hidden dangers), smart helmet (with "" with "" Real -time positioning, one -click help, recording at any time "), intelligent remote video monitoring, voice intercom, electronic fences.

▲ Access control face recognition system

▲ Separation of people and cars

▲ Smart remote video surveillance and voice intercom system

▲ Smart remote video surveillance system capture

▲ Smart helmet

▲ Smart helmet site application

▲ VR Security Education Experience Hall

3. Fast

In order to build this milestone bridge, the project management team has done a lot of efforts, high -quality and efficient promoting project construction, and running out of the project construction "+speed".

1. Complete underwater infrastructure for about 6 months in advance. By adopting the "8" font-type bite pile-double-wall steel combination coffin construction No. 3 main pier water underwater foundation, the construction of different processes is achieved; and the "octopus" pouring method is the first to break the traditional single-point pouring, which greatly improves, which greatly improves Patients, construction efficiency and pouring quality. It saves about 6 months compared with the traditional way, grab the largest embedded rock deep -water foundation in a dry period (nearly 6 months) to ensure the safety of the project safety.

▲ Octopus Fighting

2. Sota's construction efficiency is improved by about 33%. By innovating the use of tower columns and connecting boards asynchronous construction, large tonnage steel anchor beams and steel beef legs, and full -fitting steel pipe brackets, and improving traditional steel bars, powerful skeleton installation processes and hydraulic molding molds, greatly improving construction efficiency , The average tower column without cable region is completed in 6 days, and a section of construction is completed. There is an average section of construction in the pillar pillar of the cable area, which is about 33%compared with the traditional method of construction. construction. ▲ Hydraulic climbing mold

▲ Sota Construction

▲ Strong skeleton

▲ Cross -no -crossing beam section hangs

▲ Curtain hanging

3. Organize 10,000 tons of steel box beam transportation and storage beams within 30 days. Through the production of steel beams in advance, transform the dock, integrate large floating cranes and ship resources in the upper reaches of the Yangtze River, and mobilize 8 freighters above 3,000 tons to and from between the total factories and bridges; The steel box beam dragging system with a mature operation and high efficiency of the steel beam in one day and night is 12 meters per hour. It completed 22 pieces of 22 pieces in 30 days before the water level fell. The beam symmetrical hanging rack has laid a solid foundation.

▲ Chengtai Construction

▲ Night Construction

Further promote the development of the south of Sichuan

Yibin Lingang Public Railway Bridge is a co -crossing channel for the Rongkun and the Chongqing -Kun -Kun -Kun -Kun -Kun -Kun -Kunming high -speed railway in the "eight vertical and eight horizontal" network. The development of the Sichuan River Development and Chengdu -Chongqing Economic Zone connecting to the South Guikun Economic Zone, the Pan -Pearl River Delta area to an important portal of ASEAN and Southeast Asia.

▲ In front of Heilong

Manuscript support

Sichuan Highway Bridge Construction Group Co., Ltd.

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