On February 7th, the construction of the Shiziyang Channel, a major project in the Guangdong-Hong Kong-Macao Greater Bay Area (GBA), fully resumed. A total of 1,600 workers are advancing construction at 32 work sites, including the Shiziyang grand bridge, the Nansha Avenue Tunnel, and the Fery Road. The key control project, the east and west anchorages of the Shiziyang grand bridge, have already reached a height of 86.5 meters.

As another world-class bridge in the GBA, the Shiziyang grand bridge adopts a double-deck steel truss suspension bridgedesign with a main span of 2,180 meters, enabling a "single span across the river." In terms of core equipment innovation, the world's largest tower crane, the R20000-720, is being used for precise lifting at the west main anchorage. This ultra-large flat-arm tower crane features a heavy-duty, modular structure design, enabling coordinated work between the main and auxiliary anchorages in a "one tower, three machines" configuration. It can install a 145-ton steel shell with an installation deviation controlled within 5 millimeters, reducing a process that originally took several hours to just one hour.

"We have tailored our approach to the unique characteristics of the project, further advancing intelligent construction for bridges over 2,000 meters, the iterative upgrade of the smart beam production line, and the digital transformation of the construction. We have developed and applied a series of new technologies, materials, equipment, and techniques, aiming to create a high-quality, high-efficiency composite highway channel while promoting the advancement of the bridge construction industry's supply chain. The project fully reflects the continuous enhancement of new quality productive forces in Guangdong's bridge construction," emphasized Xian Rong, Deputy General Manager of the Shiziyang Channel Project at Guangdong Transportation Group.

The main anchorages of the Shiziyang grand bridge have a height of 342 meters, and as of now, construction has reached segment T17, standing at a height of 86.5 meters. It is expected that by 2025, the height of the main anchorages will surpass 200 meters. Once completed, the bridge will form a composite "golden channel" connecting the eastern and western banks of the Pearl River Estuary, accelerating the development of a 100-kilometer "Golden Inner Bay" around the Pearl River Estuary.　

Source: Lingnan on the Cloud

湾区新“黄金通道”狮子洋大桥主塔现雏形

2月7日，粤港澳大湾区超级工程——狮子洋通道建设现场全面复工，1600名建设者在项目主桥狮子洋大桥、南沙大道隧道、轮渡路等32个施工点同步推进。项目控制性工程狮子洋大桥东西主塔已拔高至86.5米。

作为湾区又一世界级大桥，狮子洋大桥采用主跨2180米双层钢桁悬索桥的方案“一跨过江”。在核心装备创新领域，全球最大塔式起重机R20000-720正在西主塔进行精准吊装。这台超大型平臂塔机采用重载分体式结构设计，实现主副塔协同作业的"一塔三机"构型，单次吊装145吨钢壳的安装偏差控制在5毫米内，将原本需要数小时的工序缩短至1小时完成。

"我们结合项目建设特点，进一步推动了超两千米级桥梁智能建造、智慧梁场生产线迭代升级、工程建设数字化转型升级，研发应用了系列新技术、新材料、新设备、新工艺，力求打造出一条高质量、高效能的复合公路通道，并助推桥梁建造行业产业链进步。项目建设充分体现了新质生产力在广东桥梁建设领域的不断提升。"广东交通集团狮子洋通道项目副总经理鲜荣强调。

据了解，狮子洋大桥主塔塔高342米，目前已建设至T17节，达到86.5米高，预计2025年主塔高度将突破200米。建成后将形成连接珠江口东西岸的复合型黄金通道，加速构建环珠江口100公里"黄金内湾"发展格局。

文、图｜记者 王丹阳 通讯员 钟维健
译｜林佳岱
英文审校｜赵凡