Construction process of Zhanjiang Bay Bridge

Maxie Bay, where Zhanjiang Bay Bridge is located, is 2500 meters wide and 20 meters deep, with large tidal range, high salinity, lightning and typhoons, close to the 50,000-ton main waterway, and the construction environment is complex. Innovative design brings many difficulties to construction.

The pile foundation, pile cap, tower column and approach bridge of the bridge were awarded the bid by Guangdong Changda Highway Engineering Company, the hero of road and bridge construction, and the steel box girder of the main bridge was manufactured and installed by Zhongtieshan Bridge Group, a century-old shop made by China Steel Bridge, both of which were listed as "Top Ten Bridge Heroes in China's traffic construction".

The pile foundation of the main pier of the bridge is104m to106m, which is the first long pile for bridge construction in Guangdong Province. The location of the main pier is a stratum named after "Zhanjiang Formation", with a thickness of over 250 meters and amazing viscosity. When a drill bit with a diameter of two or three meters goes down, it will soon paste into a big mud ball, which will be cleaned once every two or three days, and it will take 28 days to drill a pile. Technicians from all sides of the bridge worked hard day and night, held "Zhuge meetings" at various construction sites, and finally worked out a new technical scheme to improve the drill bit. The construction speed is increased from 28 days to 1 1 day. "Research on Long Pile Hole-forming Technology" won the Science and Technology Progress Award of Guangdong Provincial Communications Department, reaching the world leading level. It is the first time to design the curved tower of bridge in China. Bridge builders carefully study the construction scheme, adopt elaborate construction control network, make special formwork according to the line shape, and then paste iron sheets, so that the curve of the completed main tower is smooth and the surface is flat. Huang Huahua, governor of Guangdong Province, could not help admiring when inspecting the project: "As flat as a steel plate." The design unit was equally surprised: "I didn't expect to do it so well."

On June 2, 2006, at 0: 1 1, the temperature was 29 degrees Celsius. After the hoisting of the last steel box girder of Zhanjiang Bay Bridge, the steel box girder weighing more than 100 tons was firmly embedded in the gap of the last 1 1.2 meters of the main span at an altitude of 50 meters above the sea, just like a seamless structure, and a successful hoisting was realized. /kloc-more than 0/000 days of day and night construction makes people feel emotional! When I first arrived, everyone was raw by the sunshine in Zhanjiang, and the hot steel plate stuck the sole of Dr. Cao, the general manager of Bridge Company. During the construction of the first pile foundation of the main pier of the bridge, Ma Ning, the builder of the main pier, "stared" for 36 hours until the concrete was poured for 2 hours before leaving under the forced order of the leader; Yang Weizhen, a 60-year-old supervision engineer, has just finished surgery and has been on duty for 8 hours continuously, watching the underwater concrete pouring scene with young people to eat lunch boxes; There are also builders who are far away from their loved ones and concentrated on the construction site, and the road is endless. Because of this bridge, some young people have repeatedly postponed their wedding ... Zhanjiang Bay Bridge Company, which was established only a few years ago, has won the title of national excellent bridge construction team through the tempering of bridge construction.

Strict and meticulous, scientific management, the whole construction process did not appear major quality problems, nor safety accidents, creating a miracle in the history of domestic long-span bridge construction.