The Shenzhen-Zhongshan Bridge officially opened at the end of June this year, reducing travel time between Shenzhen and Zhongshan to just half an hour by car.

The Shenzhen-Zhongshan Bridge, a world-class mega-project in the Guangdong-Hong Kong-Macao Greater Bay Area, stands out for its exceptional features. Boasting ten world records, this cross-sea passage serves as a model for global transportation, showcasing Guangdong's expertise and offering China's solutions.

Core materials + key technologies + major national equipment

Spanning approximately 24 kilometers, this cross-sea cluster project integrates a bridge, island, tunnel, and underwater interchange, making it one of the most complex construction endeavors globally. It seamlessly combines these elements to create a marvel of modern engineering.

Pioneering a new paradigm in cross-sea cluster project management, the Shenzhen-Zhongshan Bridge emphasizes industrialized and intelligent construction methods. The project has led to the development of 15 world-first core materials, key technologies, and major national equipment, overcoming numerous technical challenges. It achieved five significant breakthroughs, including the world's first bi-directional eight-lane underwater tunnel, the largest offshore span suspension bridge, and the first underwater interchange. These innovations offer valuable insights and solutions from Guangdong and China for global transportation projects.

World's largest and longest sea passage in the GBA

Situated in the Lingdingyang waters, the Shenzhen-Zhongshan Bridge was constructed under extreme conditions, including high temperatures, humidity, salinity, and frequent typhoons. Despite these challenges, the project boasts the world's largest offshore span suspension bridge, reinforcing China's leading position in offshore large-span suspension bridge construction.

The project also achieved several world-leading technological advancements. It includes the longest and widest underwater immersed steel shell-concrete tube tunnel. For the first time, a new composite structure was proposed for the tunnel, featuring a bi-directional eight-lane standard section and a bi-directional ten-lane widened section. This innovation filled a critical gap in the industry. Additionally, the project introduced a new method for installing the final joint of immersed tube tunnels using a push-in connection technique and revolutionized the installation of ultra-wide variable-width offshore immersed tube tunnels.

Ten top world records of the Shenzhen-Zhongshan Bridge

1. World's largest span of 1,666 meters for an offshore steel box girder suspension bridge

2. World's largest navigation clearance height of 76.5 meters for an offshore bridge .

3. World's largest offshore suspension bridge anchors with each anchor containing approximately 344,000 cubic meters of concrete.

4. Resistance test with the world's highest wind speed for a suspension bridge: the bridge withstood a maximum vibration test wind speed of 83.7 m/s.

5. World's largest hot-mixed epoxy asphalt paving on a steel bridge deck: the paving covers an area of 378,800 square meters.

Steel shell-concrete immersed tube tunnel engineering

6. World's longest bi-directional eight-lane underwater immersed tube tunnel: the tunnel is 5,035 meters long, consisting of 32 segments and one final joint.

7. World's widest underwater immersed steel shell-concrete tube tunnel: standard segments are 165 meters long, 46 meters wide (widest point 55.6 meters), and 10.6 meters high.

8. World's largest volume of self-compacting concrete poured in a single immersed tube tunnel segment: Each standard segment involved pouring 29,000 cubic meters of concrete, totaling 910,000 cubic meters.

9. World's first underwater highway interchange, including the airport interchange.

10. World's widest repeatedly foldable M-type waterstop of 3 meters wide used in the final joint of the immersed tube.

Source :Yangcheng Evening News

深中通道：创造十项世界之最的“中国名片”有何不同？

深中通道今年6月底正式开通运营后，从深圳到中山驾车只需要半个小时。

作为粤港澳大湾区世界级的超级工程，深中通道究竟有何过人之处？集十项世界之最于一身的这座跨海通道，凭什么能为全球交通提供广东经验和中国方案？

核心材料+关键技术+大国重器

深中通道集“桥-岛-隧-水下互通”于一体，全长约24公里，是当前世界上综合建设难度极高的跨海集群工程之一。它成功地实现了桥、岛、隧道以及水下的互通。

深中通道创新了跨海交通集群工程管理新范式，全力推行工业化建造和智能建造，研发形成了15项世界首创的核心材料、关键技术和大国重器，攻克了诸多领域“卡脖子”技术难题。在世界首例双向八车道海底隧道、世界最大跨径离岸海中悬索桥、世界首例水下枢纽互通立交等领域取得五项突破，为世界跨海通道工程提供了广东经验和中国方案。

海上最大海底最长都在湾区

在伶仃洋上，面对高温、高湿、高盐、强台风频发等恶劣复杂海洋环境，深中通道建成了世界最大跨径全离岸海中悬索桥，进一步巩固我国外海超大跨径悬索桥建造技术的领先地位。

诸多技术世界领先。深中通道建成了世界最长最宽海底钢壳-混凝土沉管隧道；首次提出了标准段双向8车道、变宽段双向10车道深埋钢壳混凝土跨海沉管隧道新型组合结构，填补了行业空白；发明了沉管隧道推出式最终接头压接与安装方法；革新了超宽变宽外海沉管隧道浮运安装技术。

深中通道十大世界之最

1.世界最大跨径全离岸海中钢箱梁悬索桥（主跨1666米）。

2.世界最高通航净高海中大桥（通航净高76.5米）。

3.世界最大海中悬索桥锚碇（单个锚碇混凝土方量约34.4万立方米）。

4.世界最高悬索桥抗风检验风速（最高颤振检验风速83.7m／s）。

5.世界最大体量钢桥面热拌环氧沥青铺装（面积达到37.88万平方米）。

钢壳-混凝土沉管隧道工程

6.世界最长的双向八车道海底沉管隧道（长5035米，32个管节＋1个最终接头）。

7.世界最宽的海底钢壳-混凝土沉管隧道［标准管节长165米、宽46米（最宽55.6米）、高10.6米］。

8.世界单体体量浇筑最大钢壳沉管自密实混凝土浇筑（单个标准管节混凝土浇筑方量达到2.9万立方米，累计91万立方米）。

9.世界首例水下高速公路枢纽互通—机场互通立交。

10.世界最宽（3米）的可反复折叠M型止水带应用于沉管最终接头。

文 | 记者 王丹阳 通讯员 沈仲
图 | 记者 宋金峪 周巍 王磊 曾育文
翻译 | 刘佳慧