Hong Kong-Zhuhai-Macao Bridge is a veritable bridge of science and technology. Behind these world-class challenges are a series of powerful drivers supported by innovation and technology. Since the preparatory work began in 2003, more than 200 scientific research units and thousands of scientific and technological workers have carried out more than 300 scientific research projects around the construction of the Hong Kong-Zhuhai-Macao Bridge, with the national science and technology support plan as the main line.
From the feasibility study stage of the previous project to the start of construction, the concept of scientific and technological innovation runs through. This super project has gathered thousands of scientific and technological workers in the fields of bridge design and construction, material research and development, engineering equipment and even ecological environmental protection, carried out more than 300 scientific research projects, obtained more than 100 invention patents, published more than 500 papers and created more than 40 construction methods.
The national science and technology support plan started the project of "Research and demonstration of key technologies for the construction of cross-sea cluster project of Hong Kong-Zhuhai-Macao Bridge" from 20 10, involving various difficulties in bridge construction. Professional, innovative and practical scientific and technological research has supported the construction of the Hong Kong-Zhuhai-Macao Bridge, gnawed hard bones, made comprehensive breakthroughs in key technologies, key equipment and key materials, and also played a leading role in the independent innovation and technological progress of China's transportation construction industry.
The island tunnel project of Hong Kong-Zhuhai-Macao Bridge is the first case of deep buried immersed tube in the world, and it is also the first time that the immersed tube tunnel has no leakage.
The island tunnel project of Hong Kong-Zhuhai-Macao Bridge is the first deep-buried immersed tunnel in the world. Traditional immersed tunnels are all shallow buried, but the load on the top of immersed tube of Hong Kong-Zhuhai-Macao Bridge is five times that of traditional immersed tube. If the segmented pipe joint (flexible) is adopted according to foreign experience, there may be risks such as insufficient joint resistance and joint leakage. Technicians finally revealed the stress and deformation mechanism of the deep-buried immersed tube structure system in theory, and innovatively proposed a new semi-rigid immersed tube structure. Compared with the scheme of "deep burying and shallow doing" proposed by foreign experts, this scheme saves the construction period.
As the largest steel structure bridge in the world, the steel plate consumption of the main girder of this bridge is as high as 420,000 tons. This is equivalent to the weight of 10 bird's nest or 60 Eiffel Tower, and can resist 16 typhoon and 7 earthquake. The paved area of the steel deck of the bridge reached 500,000 square meters, which also set a world record.
What's even more amazing is that this bridge is all made of "building blocks". All components of the Hong Kong-Zhuhai-Macao Bridge, regardless of their size, including piers, bridge bodies weighing thousands of tons and pylons with a height exceeding 100 meters, are manufactured in the onshore factory as a whole, and then transported to the sea, assembled together like building blocks, realizing precise manufacturing and installation.
The Hong Kong-Zhuhai-Macao Bridge is also a green project. At the beginning of the construction, the most worrying white dolphin was only1400; After the completion of the main project, the number of white dolphins increased to 1800.