Chongqing Yangtze River Bridge

Also known as Shibanpo Yangtze River Bridge. Chongqing Yangtze River bridge across the Yangtze River has become one of the famous scenic spots in Chongqing.

Chongqing Yangtze River Bridge

Chongqing Yangtse River Bridge, also known as "Shibanpo Yangtze River Bridge", is a river crossing channel connecting Yuzhong District and Nan'an District in Chongqing, China. It is located on the Yangtze River waterway. It is the first super large urban highway bridge in the middle reaches of the Yangtze River and an important part of the main urban road in the southwest of Chongqing.

Chongqing Yangtze River Bridge started construction on November 26, 1977 and opened to traffic on January 26, 1981;

The construction of the double track bridge was started on December 28, 2003 and opened to traffic on September 26, 2006.

Chongqing Yangtze River Bridge starts from Shibanpo overpass in the north, crosses Yangtze River Waterway in the upper and huanggedu overpass in the South; the original old bridge is 1120 meters long, and the double track bridge is 1103.5 meters long; the road is a two-way eight Lane urban trunk road with a design speed of 60 km / h.

Construction process

On November 26, 1977, the construction of Chongqing Yangtze River Bridge started.

On July 1, 1980, Chongqing Yangtze River Bridge was opened to traffic.

On January 26, 1981, Chongqing Yangtze River Bridge passed the completion acceptance.

On December 28, 2003, the foundation design and pier construction of Chongqing Yangtze River Bridge were completed, and the construction of its double track bridge began.

On December 2, 2005, Chongqing Municipal People's government organized relevant experts to review the work outline of "model test and Research on steel concrete joint of main bridge", and completed the audit work of Chongqing Yangtze River Bridge project scheme.

On May 26, 2006, Chongqing Yangtze River Bridge was closed;

On May 27, Chongqing Yangtze River Bridge completed the closure project of the double track bridge, and the double track bridge was fully connected;

On August 27, Chongqing Yangtze River Bridge completed the deck asphalt pavement project; on September 2, Chongqing Yangtze River Bridge completed the North-South abutment and underpass, bridge deck anti-collision railings and sidewalk decoration; on September 6, Chongqing Yangtze River Bridge passed the acceptance; on September 24, Chongqing Yangtze River Bridge completed the bridge load test work; on September 6, Chongqing Yangtze River Bridge completed the bridge load test;

On September 26, the double track bridge of Chongqing Yangtze River Bridge was opened to traffic.

On October 9, 2015, Chongqing Yangtze River Bridge started the bridge landscape lighting improvement project.

Bridge location

Chongqing Yangtze River Bridge is located in the southwest of Chongqing City, connecting Yuzhong District and Nan'an District. It is about 2km away from Caiyuanba Yangtze River Bridge in the West and 2.7km away from dongshuimen Yangtze River Bridge in the East. It starts from Shibanpo overpass in the north, crosses Yangtze River Waterway in the upper and huanggedu overpass in the south. The line of the bridge passes Shibanpo overpass in the north, then connects Yangtze River Binjiang Road, Nanqu road and Shihuang tunnel in the north and huanggeduli overpass in the south After that, it connects Nanbin road and Jiangnan Avenue.

Architectural design

building structure

Overall layout

Chongqing Yangtze River Bridge is composed of old bridge, double track bridge, pier, approach bridge and interchanges on both sides; the main bridge section is arranged from southwest to northeast.

 

Design features

Design parameters

The distance between the center lines of the two bridges of Chongqing Yangtze River Bridge is 25m, and the total width is 40m——

The total length of the original old bridge is 1120m, with a span of (86.5 + 4 × 138 + 156 + 174 + 104.5m), of which the main span is 330m and the total width is 21m. The root of the bridge is 8 meters high at the end of the side span, the main span is 11 meters, and the height of the end corbel beam is 3.2 meters. The span of the hanging beam is 35 meters, the total length is 35.9 meters, the height of the middle beam is 3 meters, and the thickness of the web is 0.18 meters. The diameter of longitudinal and transverse prestressed high-strength steel tendons is 24 mm, with a total of 5 wires; the longitudinal prestressed steel tendons of large T-frame beams are 600, transverse 244 and vertical 876; the longitudinal prestressed steel tendons of small T-frame beams are 544, transverse 158 and vertical 696. The concrete grade of box girder is grade 400.

 

The total length of the double track bridge is 1103.5m, with the span arrangement of (87.75 + 4 × 138 + 56 + 174 + 133.75m), in which the main span is 330m, the full width is 19m, the bottom plate is 9.0m, the top plate is 19m, and the flange on both sides is 5m; the middle of the main span is provided with a 103m long steel box girder, with two ends at each end The steel-concrete joint section is 2.5 meters long, and the total length of steel box girder is 108 meters; the deck of steel box girder is 18 mm thick, with 8 mm stiffeners and 640 mm spacing. The nominal diameter of prestressed cable steel strand is 15.24 mm, 7 wires in total, and the standard value of tensile strength is 1860 MPa.

 

Operation

Fare system

On January 1, 2018, Chongqing Municipal People's government cancelled the collection of road and bridge tolls in the main urban area, including Chongqing Yangtze River Bridge.

 

Traffic matters

From January 8 to January 9, 2020 (00:00 to 06:00), the main bridge of Chongqing Yangtze River Bridge (from the south bank to Yuzhong) is closed, and the double line bridge (from Yuzhong to the south bank) has one-way double way transfer traffic.

 

Construction achievements

Technical problems

construction technique

At the beginning of the construction of Chongqing Yangtze River Bridge, the following construction technologies were used:

1. In the construction of five meter rock socketed deep foundation of No.5 pier, a new technology of once blasting is adopted;

2. During the construction of 2.6m diameter bored pile for deep water foundation of No.6 pier, the trial production of large-scale rotary drilling rig was organized and the trial production was successful;

3. In the construction of pier body, hydraulic sliding mode is adopted;

4. In the construction of T-frame box girder, cable-stayed bracket and cable-stayed basket are successfully used;

5. The box girder slipform construction is adopted for the first time;

6. The self-made cable-stayed bridge erecting machine is used for erecting the 120 ton lifting beam.

 

During the construction of Chongqing Yangtze River Bridge, the following construction technologies are adopted:

1. The rigid frame continuous composite structure system similar to the eight span statically determinate T-shaped rigid frame of the old bridge is adopted to solve the problems of structural asymmetry, more statically indeterminate times, temperature change, concrete shrinkage and creep;

2. The whole manufacturing, self floating transportation, hoisting and connection technology of steel box girder section;

3. The external prestressing technology is used to improve the stress and deformation control of the structure.

 

technological innovation

The double track bridge of Chongqing Yangtze River Bridge utilizes the respective advantages of steel structure and prestressed concrete structure. On the basis of fully understanding the mechanical behavior of prestressed continuous rigid frame system, it creatively integrates the concept of composite structure and steel concrete connection technology. Through a large number of practical scientific research, experiments, careful design, careful construction and effective control, it has built a unique steel and concrete structure The continuous composite structure system of concrete mixed continuous rigid frame makes the span capacity of continuous rigid frame bridge enhanced, the structural behavior more reasonable, and its design concept and construction technology are innovative.

 

Honorary recognition

Cultural characteristics

Bridge inscription

On July 1, 1980, Chongqing Yangtze River Bridge was opened to traffic. Ye Jianying's inscription was set on both sides of the north bridge.

 

"Spring, summer, autumn and winter"

Chongqing Yangtze River Bridge has four statues on both sides of the bridgeheads in Yuzhong District and Nan'an District, named "spring, summer, autumn and winter". They are designed and created by Ye Yushan, former president of Sichuan Academy of fine arts. Each statue is 8 meters high and made of aluminum alloy. In 2019, they were selected as the third batch of Chongqing cultural relics protection units.

 

Value significance

Chongqing Yangtze River Bridge is an important traffic thoroughfare connecting Yuzhong Peninsula and Nan'an District, as well as provinces and cities on both sides of the Yangtze River, and it is also an important exit channel from Chongqing to cities in southern China. With the completion of the double track bridge, the traffic pressure from Yuzhong Peninsula to Nan'an District will be greatly relieved. < I (Xinhua editorial) < / I

 

Address: between Shibanpo, Yuzhong District and Liziyuan, Nan'an District, Chongqing

Longitude: 106.56300354004

Latitude: 29.546100616455

Traffic information: take subway line 1 to Qixinggang station, then walk to visit, or take bus No.319, 611, 809 to beiqiaotou station of Yangtze River Bridge, take No.112 outer ring, 120, 0301 night shift, 301, 306, 308, 313, 315, 0321 night shift, 321, 322, 346, 351, 361, 372, 382, 429, 810 to Shibanpo station.

Ticket information: Free

Opening hours: all day

Chinese PinYin : Zhong Qing Zhang Jiang Da Qiao