Traditional Culture Encyclopedia - Weather forecast - Caiyuanba Bridge Caiyuanba Bridge Quantity Restriction Provisions
Caiyuanba Bridge Caiyuanba Bridge Quantity Restriction Provisions
How do pedestrians get on Caiyuanba Yangtze River Bridge? Pedestrians need a bus to get on Caiyuanba Yangtze River Bridge. According to relevant public information, Caiyuanba Bridge and Chongqing Caiyuanba Yangtze River Bridge are located on the Yangtze River between Lianglukou and Nanping, the main urban area in the upper reaches of the Yangtze River. The structural form of this bridge is a half-through concrete filled steel tubular tied arch bridge without thrust, which leads to Caiyuanba Bridge for traffic. Pedestrians can get on the bridge by bus.
How many meters is the river bottom of Caiyuanba river-crossing tunnel in Chongqing? River bottom of Caiyuanba river-crossing tunnel in Chongqing11.9km.
Caiyuanba Yangtze River Bridge is a river-crossing channel connecting Yuzhong District and Nan 'an District in China and Chongqing. It is located on the Yangtze River waterway and is an integral part of the main roads in northern Chongqing.
Caiyuanba Yangtze River Bridge started construction on February 28th, 2003. Closed on June 5438+February 3, 20061; June 2007 65438+1October 65438+September was opened to traffic.
Caiyuanba Bridge starts from Xiangyang Tunnel in the north, crosses the Yangtze River waterway and ends at Dashi Interchange in the south. The total length of the line is 7 kilometers and the main bridge is 800 meters long. The upper floor is a two-way six-lane urban expressway with a design speed of 60 km/h, and the lower floor is a two-lane urban traffic with a design speed of 75 km/h.
work progress
In August 2002, Chongqing Municipal Government approved the construction scheme of Caiyuanba Yangtze River Bridge and handed over the feasibility study of the bridge project to Chongqing Traffic Research and Design Institute. On June 5438+ 10 of the same year, Chongqing City Investment Corporation took the lead in holding a meeting with chongqing urban planning bureau, Chongqing Construction Committee, Rail Company and the project team of the Academy of Communications on the construction of Caiyuanba Yangtze River Bridge.
165438+ 10. In October, the feasibility study report of Caiyuanba Bridge adopting highway-railway dual-purpose bridge was completed and passed the expert review organized by Chongqing Municipal Government.
On February 28th, 2003, Caiyuanba Yangtze River Bridge started construction.
Count the bridges above Jialing River in the main city of Chongqing.
Bridge type: prestressed concrete continuous steel bridge
Located between Gaojia Garden in Shapingba and Shima River in Jiangbei District.
The whole bridge is 970 meters long and its main span is 240 meters.
Bridge type: cable-stayed bridge
Located between Zhongdukou in Shapingba District and Dashiba in Jiangbei District.
The length of the whole bridge is 7 16M.
Bridge type: prestressed concrete continuous rigid frame bridge
The length of the bridge is 528m, the main span is 252m, and the side span is 138m.
Chongqing Jiahua Jialing River Bridge project is a gift project for the tenth anniversary of Chongqing's direct administration. The largest excavation section area of Jiahua Tunnel is 230.06 square meters, setting a new record for the construction of municipal highway traffic tunnels in China. The width of the main deck of Jiahua Bridge is 37 meters, setting a record for the widest deck in Asia.
Bridge type: the main bridge is a double cantilever bridge with riveted steel truss, and the approach bridge is a reinforced concrete T-beam.
Located between Shangqing Temple in Yuzhong District and Huaxin Street in Jiangbei District, it is called Niujiaotuo Jialing River Bridge, which is the first urban bridge in Chongqing.
The total length is 625.7 1 m and the width is 2 1.5 m.
June 5438 +2002 10, the Chongqing-Macao Friendship Bridge was completed and opened to traffic, which is about 200 meters away from Niujiaotuo Jialing River Bridge and is called the "Sister Bridge".
At the same time, Niujiaotuo Jialing River Bridge was changed to one-way traffic, only for Yuzhong District to Jiangbei District; From Jiangbei District to Yuzhong District, take the Chongqing-Macao Bridge.
Bridge type: prestressed concrete continuous rigid frame
Connecting Huanghua Garden in Yuzhong District and Liaojiatai in Jiangbei District
Main bridge length1208m.
Bridge type: single tower and single cable plane partial cable-stayed bridge
This bridge is 720 meters long.
It starts in Yuzhong District, Chongqing, crosses Jialing River next to Hongyadong to Jiangbei Town, Jiangbei District, and is connected with the abutment on the north bank of Dongshuimen Yangtze River Bridge through the communication tunnel on Yuzhong Peninsula, which is a dual-purpose bridge for river crossing and rail transit.
Above the Yangtze river
Bridge type: steel truss girder cable-stayed bridge
The total length of the bridge is1000m, and the main span is 520m.
Bridge type: long-span rigid frame-continuous hybrid beam bridge
The total length of the bridge is1103.5m and the main span is 330m.
Bridge type: Half-through CFST tied arch bridge without thrust.
The total length of Caiyuanba Bridge is1.866m, in which the main bridge is 800m, the north approach bridge is 886m and the south approach bridge is1.80m.. The bridge is 1 14m high, with the highest deck height on the Yangtze River and a main span of 420m. It is the second longest-span arch bridge in China.
Located in the upper reaches of the Yangtze River between Lianglukou and Nanping in Chongqing, it is the seventh river-crossing bridge in Chongqing. Chongqing Caiyuanba Yangtze River Bridge (also known as Coral Yangtze River Bridge) is the largest long-span bus and urban light rail arch bridge in China.
Caiyuanba Yangtze River Bridge has set three world firsts: the span of steel box arch beam is 420 meters, which is the highest in the world; It is the world's first urban bridge with both highway and light rail, and it is also the world's first bridge installed by cable crane.
Bridge type: Twin-tower portal suspension bridge.
Connecting Jiulongpo District and Nan 'an District
The total length of the bridge is 2.7km, in which the main bridge is1420m, the main bridge is1022m, the main span is 600m, and the main tower is163.9m..
Bridge type: steel arch bridge
Located in the main urban area of Chongqing in the upper reaches of the Yangtze River, it is bordered by Wulidian in Jiangbei in the west and marble in the south bank in the east.
Total length 174 1m, main span 552m m. If the front and rear approaches are included, it is 488 1m, and the main span is the largest arch bridge in the world.
Bridge type: concrete cable-stayed bridge with twin towers and double cable planes.
The Great Buddha Temple Yangtze River Bridge is a Yangtze River Bridge spanning Chongqing, Guizhou and expressway. Located about five kilometers downstream of Chaotianmen Wharf in Chongqing.
The total length of the bridge is 1 168m, and the main bridge is a cable-stayed bridge with twin towers and double cable planes, with a span of 198+450+ 198m. The maximum height of the main pier tower is 206.68 meters, the main span of the bridge is 450 meters, and there are 55 pairs of stay cables on both sides of each tower. The cable spacing is 8. 1m (excluding side stays), and the inclined angle of stay cables is 2716' ~ 80 27', ranking first among similar bridges in China.
As a Chongqing student studying bridge engineering, I am proud!
Introduction of Chongqing Caiyuanba Yangtze River Bridge? Chongqing Caiyuanba Yangtze River Bridge is located in the upper reaches of the Yangtze River between Chongqing Lianglukou and Nanping, the main city of Chongqing. The structural form of the bridge is a half-through concrete filled steel tubular tied arch bridge without thrust. Full-length 165 1m, completed in 2007, is the seventh river-crossing bridge in Chongqing, with a bridge height of 1 14m, which is the highest bridge deck on the Yangtze River. On the north side of the bridge, there is an interchange in front of Chongqing Railway Station, which is 97m high, equivalent to 30 stories high. After leaving the river, it is divided into three layers. Caiyuanba Yangtze River Bridge was officially started in June 2004 +065438+ 10, closed on February 2, 2007, and completed and opened to traffic on February 30, 2007.
Project overview
Chongqing Caiyuanba Yangtze River Bridge is located in the center of Chongqing's main city. The annual average temperature of the bridge site is 18.3℃, and the maximum flow in flood season is 86,200m3/s, and the maximum flow is 4.07m/s. The bridge project consists of the main bridge, the north-south approach bridge, the Caiyuanba interchange, the Sujiaba interchange and the Cheng Nan tunnel, with a total length of about 4000m. Among them, the 800m-long main bridge with steel truss girder and steel box tied arch structure is a bridge project. The traffic load of the main bridge is six-lane highway traffic and two-lane rail traffic, and there are 2.5m wide sidewalks on both sides of the bridge deck. The approach bridge of the main line is a double-deck prestressed concrete bridge with a span of 75m, and the upper bridge is a continuous rigid frame for highway vehicles. The lower bridge is a continuous beam, crossing the light rail.
technology standard
Main design technical standards of main bridge:
Driving speed: road vehicle v = 60 km/h; Rail transit V _ = 75km/h
Deck width: clear bridge width b = 2.5+12.25+1.0+12.25+2.5 = 30.5m.
Rail transit passes through the lower floor with a clear width of b _ = 8.6m.
Design load: urban class A; Straddle monorail train 352 t; Population 2.4 thousand/_
Design wind speed: 20m above the ground in the bridge area 1% frequency 10 min. The average wind speed is 26.7m/s.
Seismic intensity: basic intensity is 6 degrees, and fortification intensity is 7 degrees.
Design flood frequency: 1/300
Design navigable clear width: not less than 385 meters before impoundment of the Three Gorges Project; The Three Gorges Project shall not be less than 378 meters after impoundment.
Ship impact force: transverse 1400kN, longitudinal 1 100kN.
work progress
Caiyuanba Yangtze River Bridge has set three world firsts: the span of steel box arch beam is 420 meters, which is the highest in the world; It is the world's first urban bridge with both highway and light rail; It is also the first bridge installed by cable crane in the world.
In addition, the cable hoisting system was adopted in the bridge construction, which created three firsts in the history of bridge construction in China: the tallest tower crane (202 meters), the longest span (420 meters) and the heaviest hoisting (420 tons).
The whole bridge is sprayed with environmentally friendly red anticorrosive paint, which is very eye-catching. The four-layer paint is resistant to corrosion and sunlight, and the two orange-red "flying rainbows" will not fade for at least 15 years.
"Chongqing has a special weather and frequent acid rain. The bridge deck coating can resist ultraviolet rays and corrosion." The engineer in charge of painting introduced that the upstream and downstream of the main arch were painted with four layers of paint. The bottom layer is an anticorrosive layer to protect the outer layers of the two arches of the bridge from corrosion; The third layer is an isolation layer, which is used to isolate oxygen and water vapor and protect the structure from oxidation and erosion; The second floor and the surface are beautiful floors, which ensure the safety of the bridge while wearing "colorful clothes". The Y-shaped structure at the bottom of the main arch is painted silver. The sidewalks on both sides of the bridge have been paved with two layers of waterproof asphalt, and then the surface is sprinkled with dark green fine stones. It is understood that it is the first time to use new color materials on the river-crossing bridge in the main city. Caiyuanba Bridge provides an ornamental function for pedestrians. The widest sidewalk on both sides is about 6 meters, which is the widest sidewalk configuration among the bridges under construction in Chongqing. People standing on the sidewalk can enjoy the river view.
According to the introduction of China Railway Bridge Bureau, the connection between the main arch and the deck of Caiyuanba Yangtze River Bridge mainly depends on 76 suspenders.
The China Railway Bridge Bureau said that after the completion of Caiyuanba Yangtze River Bridge, vehicles will inevitably vibrate when passing on the bridge deck. "The outside of the sling is plastic. When the bridge vibrates, the suspenders will rub against the steel arch. Over time, the outside of the sling will wear out. " In order to prevent this from happening, the construction party installed shock absorbers at the contact between each suspender and the main arch. "It acts like an expansion screw to prevent the boom from vibrating to the maximum."
According to the introduction of China Railway Bridge Bureau, the waterproof material used in the bridge comes from Britain. This kind of "waterproof suit" is first used on bridges in our city, with high strength and super elasticity, and its service life can reach 30 years.
It is reported that this waterproof coating is different from the epoxy resin used in other bridges, and has better tensile strength, aging resistance and crack resistance. During the construction of Caiyuanba Yangtze River Bridge, firstly, the bridge was derusted by sandblasting, and then a layer of white primer was applied, and the surface of the primer was also sprayed with a layer of white and yellow waterproof paint.
Then, brush a layer of orange adhesive on the waterproof layer and lay pouring asphalt concrete on it. This kind of concrete is also different from other concretes. Asphalt pouring can be completed without roller, because it has strong deformation ability, can automatically complete dense weaving and has strong waterproof function. It is said that this construction technology is the first in the construction of municipal projects such as bridges in our city.
Caiyuanba Yangtze River Bridge, with a main span of 420 meters, is the second longest-span arch bridge in China, with a total steel structure weight of 1.8 million tons. The structural form of the bridge is a half-through concrete filled steel tubular tied arch bridge without thrust, which is a modern bridge integrating many new bridge structural forms and scientific and technological achievements such as steel tube arch, steel box girder and steel truss girder. This structure is unique not only in China, but also in the bridges of the world.
"Part of the bridge deck adopts steel beam frame bridge deck." The person in charge of China Railway Bridge Bureau said that this part is 800 meters long and weighs more than 20,000 tons. The steel beam frame is very light, the weight is only about one third of that of the cement bridge deck, and the weight of the bridge is reduced by about 40 thousand tons.
Important significance
Chongqing Caiyuanba Yangtze River Bridge (also known as Coral Yangtze River Bridge) is the largest long-span public transportation and urban light rail arch bridge in China at present, with a main span of 420 meters and the second longest span arch bridge in China, with a total steel structure weight of10.8 million tons. The structural form of the bridge is a half-through concrete filled steel tubular tied arch bridge without thrust, which is a modern bridge integrating many new bridge structural forms and scientific and technological achievements such as steel tube arch, steel box girder and steel truss girder. This structure is unique not only in China, but also in the world.
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