Recently, the Shiziyang Channel project, a mega infrastructure project in the Guangdong-Hong Kong-Macao Greater Bay Area (GBA), reached another key construction milestone. The installation and closure of all transverse beams on the main towers have been completed. The project has officially entered a new phase of superstructure construction, laying a solid foundation for the efficient advancement of the project.

At around 8 a.m. that day, the final segment was slowly lifted off the ground by tower cranes and steadily raised toward the top of the tower. After approximately one and a half hours of operation, the last steel transverse beam achieved millimeter-level precision during closure, laying a firm foundation for subsequent superstructure construction and the overall progress of the bridge project.

As the first double-decker composite road passageway in the Pearl River estuary, the Shiziyang Channel stretches about 35 kilometers in total. It links Nansha of Guangzhou to the west and Shatian and Humen of Dongguan to the east. As a key control project of the Shiziyang Channel, the Shiziyang Grand Bridge is designed as a suspension bridge with a main span of 2,180 meters crossing the river in one leap, and a double-deck structure with 16 lanes. Once completed, the bridge will set five world records among double-deck suspension bridges: main span length, number of lanes, tower height, anchorage diameter, and main cable diameter.

At present, half of the construction period for the Shiziyang Channel has been completed. The progress of auxiliary works including interchanges and approach bridges has exceeded 50%. Construction activities such as box girder erection and bridge deck installation are moving forward steadily, and the outline of the channel is now clearly visible above the Pearl River estuary. The tower columns and 6 transverse beams of both the eastern and western main towers of the Shiziyang Grand Bridge have all been completed. This year, preparations for cable saddle installation and catwalk construction are underway, with plans to have the pilot cable cross the river. A string of key construction works will keep driving the project forward.

Upon completion, the Shiziyang Channel will greatly ease traffic pressure on Humen Bridge and Nansha Bridge. It will also accelerate integrated development of the GBA, enhance regional core competitiveness, and inject strong impetus into the high-quality development of Humen.

狮子洋通道主塔合龙，大湾区超级工程进度条刷新

日前，粤港澳大湾区超级工程狮子洋通道项目建设迎来又一关键节点——主塔横梁吊装施工全面完成，工程正式转入上部结构施工新阶段，为项目高效推进筑牢核心支撑。

当天早上8时许，最后一块节段在塔吊牵引下缓缓离地，稳步向塔顶攀升。历时约1.5小时，最后一道钢横梁实现毫米级精准合龙，为后续上部结构施工及全桥建设推进打下坚实基础。

作为珠江口首条双层复合公路通道，狮子洋通道项目全长约35公里，西接广州南沙，东连东莞沙田、虎门。项目关键控制性工程狮子洋大桥，采用主跨2180米悬索桥“一跨过江”、双层16车道高速公路设计方案，建成后将创下双层悬索桥“主跨跨径、车道数量、主塔高度、锚碇直径、主缆直径”5项世界第一。

当前，狮子洋通道建设工期已过半，部分互通、引桥等引线工程建设进度超50%，箱梁架设、桥面板安装等施工正稳步推进，通道雏形已在珠江口清晰显现。狮子洋大桥东西两座主塔，均已完成塔柱及6道横梁施工。今年，大桥还将推进索鞍吊装、先导索过江、猫道架设等重要节点施工，持续刷新建设进度条。

狮子洋通道建成后，不仅将有效缓解虎门大桥、南沙大桥的通行压力，更能加速推进大湾区一体化发展、提升区域核心竞争力，为虎门高质量发展注入强劲动能。

文、图｜记者 王俊伟 通讯员 刘继伟 王敬新
译 | 郑书悦
审 | 曾敏