The hong kong-zhuzhou-macao bridge tunnel, built by China communications and construction corporation, has been named the best project of the year by NCE, the core journal of the British society of civil engineers (ICE). This is the first time that a mainland project has won this honor. It is also the third international engineering award for the hong kong-zhuhai-macao bridge island tunnel project within one year after being awarded the "best bridge tunnel project in the world" by the American engineering news record and the "major engineering award in 2018" by the international tunnel association.

ICE is the only academic institution in the international civil engineering field that has the double functions of academic exchange and professional qualification certification. Its civil engineering qualification is widely recognized in the world. NCE is an internationally renowned civil engineering journal, which has great influence in the civil engineering industry in Europe and even the world. China hand in team building after the speech, defense and other link layers of the test, wonderful answer inserted steel cylinder fast into the island, the deep soft soil foundation reinforcement, curve segment method of immersed tube factory prefabrication, final joint, the Chinese white dolphin protection and international team to ask questions such as, won the 41 tunnel authoritative expert judges recognition and praise, in the end to stand out in the project.

The island tunnel project undertaken by China communications and construction won three consecutive international engineering awards in 2018. It not only reflects that the quality and quality of China's engineering has reached the world-class level, but also reflects that the world has paid great attention to and widely recognized China's engineering construction, which has enhanced China's "confidence" in China's transportation engineering in the world.

Located at the mouth of the pearl river, the hong kong-zhuhai-macao bridge is 55km long. The main navigable hole of the bridge is composed of two 105m2 artificial islands and 6.7km immersed tube tunnel, namely the island tunnel project, which is the control project of the hong kong-zhuhai-macao bridge. Hong kong-zhuhai-macao bridge immersed tube tunnel soft soil thickness of more than 30m. In order to reserve the navigable water depth of 3 105t oil tanker in the future, the buried depth of immersed pipe tunnel reaches 22m. The project is located in the open lingdingyang sea area, where typhoon, strong convection and high monsoon occur; The engineering waters are the core conservation area of the Chinese white dolphin. With more than 4,000 ships passing by each day, environmental protection and navigation safety are major engineering challenges. The hong kong-zhuhai-macao bridge island tunnel project adopts the general contracting mode of design and construction, and its work includes survey, design, scientific research, equipment development and construction. Six and a half years later, on May 2, 2017, the final joint was successfully installed, marking the completion of the tunnel.

In order to ensure the construction period, the technology of rapid island formation of large diameter deep inserted steel cylinder is developed. The steel cylinder, with a diameter of 22m, an average height of 50m and a weight of about 500t, is manufactured in Shanghai and transported by 70,000-90000t ocean liner. In order to ensure its stability, it needs to be integrated into the bearing layer; In order to realize this technology, the design method of large diameter deep inserted steel cylinder was developed and the hitability analysis was carried out. In order to realize the preloading of large surcharge ratio, the integral arc steel plate was innovated to form the watertight island wall structure together with the steel cylinder, and the improvement of foundation consolidation was completed in only 100 days. The plan reduces dredging by 3 106m3, cancels the construction of underground diaphragm wall of more than 1000 meters and the pile foundation of all structures on the island, and the construction period of the two artificial islands is 7 months, two years ahead of the original plan.

There are 33 immersed pipe joints in the tunnel. The standard pipe joints are 180m long, 38m wide, 11.4m high and weigh 76000t. Its foundation construction is a difficult problem, because 5.664km of continuous construction should be carried out in the backfill environment. All pipe joints are located on the longitudinal slope of 0~3%. The deepest water depth for foundation construction is 50m. The area of the bottom of standard pipe joints is 8000m2. For this project, nearly 3 billion yuan has been invested for special equipment, and deep-water measurement and control technology, fine dredging technology, removal and silt control technology, and deep-water foundation bed construction technology have been developed. As for the prefabrication of immersed pipe joints, 1 billion yuan has been invested to build the largest submerged pipe prefabrication plant. The prefabrication method of curved submerged pipe joints is the first of its kind, and nearly one million cubic meters of concrete has been self-waterproof and crack control. In this project, 33 immersed pipe joints were installed continuously and safely. In the process, the towing technology of large volume pipe joints in the offshore environment and restricted channel, the installation technology in deep water and deep channel were developed, the unmanned submersible system in deep water was developed, and the underwater installation method of adjustable pipe joints was summarized. In addition, the new structure concept of "semi-rigid pipe joint" immersed tube tunnel was developed to increase the robustness of immersed tube longitudinal structure and solve the problem of high overburden load caused by deep burial. The new foundation concept of "combined foundation bed" immersed tube tunnel is innovated, and the settlement and differential settlement of the immersed tube tunnel foundation are controlled at a good level. Innovative and active water-stopping integral final joint technique, breakthrough in underwater closure problem of immersed tube tunnel; Based on the cable test, the invention of "memory bearing" can reduce the risk of cracking or damage of the joint part of the immersed tube tunnel due to differential settlement.

After super typhoon haiyan hit the south Pacific in 2013, in view of the development trend of severe weather, the project disaster prevention standard evaluation and research were carried out, and the project disaster prevention design was optimized, comprehensively improving the project disaster prevention ability. During the construction period, the project successfully withstood the test of the frontal attack of the powerful typhoon "sky pigeon".
During the construction period, more than 140 experimental studies were carried out and 540 patents were obtained.