The twin towers stand tall on both sides, and Changhong Lingbo crosses the Yangtze River. At 0:00 on September 17, the Qipanzhou Yangtze River Highway Bridge opened to traffic, and the desire of the people of Huangshi and Huanggang on both sides of the Yangtze River to travel across the river for many years has finally come true.

The Qipanzhou Yangtze River Highway Bridge is a steel box girder anchored suspension bridge. It is an important river crossing channel of Qichun to Jiayu Expressway. The bridge starts from Qichun County of Huanggang City to Yangxin County of Huangshi City in the north. It is the first river-crossing bridge in Southeast Hubei. Suspension bridge. The total length of the project is 21.951 kilometers, of which the Yangtze River Bridge is 3328.5 meters long and the main span is 1038 meters over the Yangtze River. It is the "first span of China Railway Construction Suspension Bridge".

The bridge part adopts two-way six-lane lanes with a design speed of 100 kilometers per hour. It was learned that the bridge was officially opened to traffic on September 17.

Fine construction of beams, needles in the air

The north cable tower of the bridge is 157 meters high and is constructed in 26 sections using hydraulic climbing formwork. The upper beam at the top of the bridge's pylons is designed in the shape of a chime in the Bachu culture. Due to the ultra-high altitude and large spacing construction, the upper beam cannot use the traditional formwork system. By optimizing the plan, the builders adopted the corbel wall-attached load-bearing arch bracket as a support and also as a bottom mold. The arched support weighing 350 tons is lifted to an altitude of 110 meters above the ground in two times. During the lifting process, it is necessary to pass through the cross brace between the three towers. The distance between the two sides of the brace and the cross brace is only about 10 cm. The lifting speed and accuracy requirements are very high, which is equivalent to "piercing a needle" in the air.

Hoisting box girder by swinging method, swinging in the air

If the construction of the main tower is a high-altitude adventure with "roots", the hoisting of steel box girder is a hanging adventure time and time again. In the design, the bridge has 6 steel box girder in the non-navigable area, which cannot be erected and can be directly lifted vertically. The builders adopted the swing method and set up a beam-moving support platform in advance on the shore, and the steel box girder was lifted to the height of the beam-moving support by shipping. , The steel box girder is moved to the beam-moving support platform through the horizontal traction of the hoist, and the steel box girder is like swinging, and then to the corresponding hoisting position, and the steel box girder is lifted and hoisted in place for the second time.

Great achievements in scientific and technological research

The Qipanzhou Yangtze River Highway Bridge is an important and difficult project and a scientific research project of the joint-stock company. The project actively carried out technical research and innovative applications, created a model worker innovation studio, formed a scientific and technological research team, and solved a number of problems. Five key technologies were formed in the construction of pylons, anchors, main cables, and steel box beams.

Jointly established a BIM technology research and development studio with Southwest Jiaotong University to research and form the digital construction technology of anchors based on BIM models; cooperate with Wuhan University of Technology to study the key technology of gravity-type anchors for large-volume temperature control. Many scientific and technological achievements of the bridge have been transformed and promoted, and they have been used for reference on the same type of bridges. Among them, the anchorage deep foundation pit controlled blasting excavation technology and the anchorage (cap) mass concrete temperature control technology are applied to the construction of the Hebijin Expressway Youxi Yangtze River Bridge project.

So far, the project has obtained 8 authorized patents, 7 provincial and ministerial construction methods, 14 scientific papers and 1 software copyright. Won the Excellence Award (Comprehensive Application) of the BIM Modeling Engineer Skills Competition Team Competition in Hangzhou "Zhejiang Sanjian Cup". A number of key technologies formed are planned to be reported for scientific and technological progress awards at or above the provincial and ministerial level.

Connect all the way in series

Construction of the Qipanzhou Yangtze River Highway Bridge officially started on March 27, 2017. After five years of spring and autumn, it has now crossed the Yangtze River. Spreading out the map, it can be seen that the Qipanzhou Yangtze River Highway Bridge is like a flying dragon, not only closely connecting the old revolutionary base area with the Dabie Mountains, but also becoming a new engine for the people of eastern Hubei to consolidate the achievements of poverty alleviation and promote rural revitalization.

The bridge is an important part of the Wuhan City Circle Ring Expressway in the "seven vertical, five horizontal and three ring roads" planned by Hubei Province. The bridge will effectively divert the Shanghai-Chongqing Expressway and the Fuyin Expressway crossing the river to relieve the traffic pressure of the Edong Yangtze River Bridge. It only takes 20 minutes to drive from Qichun to Huangshi, which is 40 minutes shorter than the current journey. history. Editor/Sang Xiaomei