On Aug 13th, the Shiziyang Channel, a major transportation project in the Guangdong-Hong Kong-Macao Greater Bay Area, marked a key construction milestone. The Shiziyang Bridge, a critical part of the project, completed the main construction of its east and west anchorages. Since construction of the diaphragm wall for the west anchorage began on March 30th, 2023, workers have spent 1,243 days and nights completing the anchorage, which has now taken root along the Shiziyang waterway as the world's largest suspension bridge anchorage.

The Shiziyang Channel is approximately 35 kilometers long, stretching from Nansha District in Guangzhou in the west to Humen and Shatian towns in Dongguan in the east. It consists of the river-crossing main bridge and land approach bridges and is the first double-deck composite highway passage at the Pearl River estuary. The main bridge, Shiziyang Bridge, is set to achieve five world records for a double-deck steel truss suspension bridge in main span length, tower height, anchorage foundation, main cable diameter and number of lanes.

An anchorage is one of the key load-bearing components of a suspension bridge. It consists of a foundation, anchorage body and anchoring system. It secures the bridge's main cables and bears the tensile forces transmitted by them. Shiziyang Bridge has two anchorages, located in Shatian Town, Dongguan, and Nansha District, Guangzhou, respectively. The largest anchorage foundation has a diameter of approximately 130 meters and a maximum depth of 36 meters, setting a world record for projects of its kind.

As a landmark transportation project during the 15th Five-Year Plan period, the Shiziyang Channel is expected to open to traffic in 2029. Upon completion, it will form a cluster of river-crossing and sea-spanning passages together with the Hong Kong-Zhuhai-Macao Bridge, Shenzhen-Zhongshan Link and Nansha Bridge, further advancing the integrated development of the Guangdong-Hong Kong-Macao Greater Bay Area.

世界最大悬索桥锚碇扎根珠江口

8月13日，粤港澳大湾区核心枢纽工程——狮子洋通道迎来建设新进展，项目主桥狮子洋大桥完成东、西锚碇主体施工。自2023年3月30日狮子洋大桥西锚碇地连墙开工以来，建设者们用1243天的日夜奋战，浇筑成这座稳稳扎根于狮子洋畔的世界最大悬索桥锚碇。

狮子洋通道全长约35公里，西起广州南沙区，东至东莞虎门、沙田两镇，由跨江主桥和陆域引桥组成，是珠江口首条双层复合公路通道。其中，主桥狮子洋大桥将创下双层悬索桥“主跨跨径、主塔塔高、锚碇基础、主缆直径、车道数量”五项世界第一。

锚碇是悬索桥的关键受力构件之一，由基础、锚体和锚固系统组成，负责锚固大桥主缆，并承受主缆传来的拉力。狮子洋大桥设东、西两个锚碇，分别扎根东莞沙田镇和广州南沙区。大桥锚碇最大基础直径约130米，最大深度36米，规模创下同类工程世界纪录。

作为“十五五”时期标志性交通重大工程，狮子洋通道预计2029年建成通车，届时其将与港珠澳大桥、深中通道、南沙大桥等构成跨江跨海通道群，共同助力粤港澳大湾区深度融合发展。

文丨记者 王丹阳 通讯员 粤交集宣 岳路建 卿莉莎
图丨记者 曾育文
翻译丨郑书悦
审校丨曾敏