Recently, the north tower of the Cangrong Xunjiang Bridge on the Cangwu-Rongxian Expressway, invested in and constructed by Guangxi Communications Investment Group and built by CCCC Second Harbor Engineering Co., Ltd., was successfully capped.

The main line of the Cangrong Expressway is 105.6 kilometers long, designed as a dual-direction four-lane road with a driving speed of 120 kilometers per hour. The Cangrong Xunjiang Bridge, with a total length of 1,688 meters, is located in Wuzhou City and is a key control project of the entire line. Its two main spans are both 520 meters, and all three main towers adopt a central single-tower design, with the middle tower 108.9 meters high and the side towers 108.8 meters high.

Yang Lin, project manager of the Cangrong Xunjiang Bridge project of CCCC Second Harbor Engineering Co., Ltd., introduced that the Cangrong Xunjiang Bridge features "one world record and four domestic firsts": the world's largest-span three-tower spatial cable earth-anchored suspension bridge; the first suspension bridge in China to adopt a three-tower spatial cable structural system with a main span exceeding 500 meters; the first suspension bridge in China to adopt double deep-groove saddles; the first suspension bridge in China to adopt a pile-wall composite structure anchorage foundation; and the first three-tower spatial cable suspension bridge in China to adopt the cable-first, girder-later construction technique.

To overcome construction difficulties, the project command headquarters established a breakthrough team with Party members and technical backbones at its core, giving full play to the role of Party organizations as fighting fortresses and Party members as pioneers and role models, and strengthening scientific coordination. Through effective measures such as optimized design of an integrated curved-formwork system, BIM dynamic model construction guidance, application of an integrated intelligent monitoring and management platform, temperature control of mass concrete in tower columns, and prefabricated installation of reinforced steel segments, the team solved difficult problems including the high difficulty of precision control in main tower construction, the high risk of formwork system conversion for variable cross-section tower column construction, and the high difficulty of controlling shrinkage cracks in mass concrete pier bodies, ultimately successfully achieving the capping of the bridge's north tower.

After the project is completed, it will further improve the Guangxi expressway network, strengthen connections among the Beibu Gulf urban agglomeration, enhance the development of the Pearl River-Xijiang Economic Belt, provide transportation support for Wuzhou City's strategic vision of building itself into a central city of the golden waterway, and be of great significance for further integrating into the Guangdong-Hong Kong-Macao Greater Bay Area and building Guangxi's all-round open development pattern of "southward opening, northward connection, eastward integration, and westward cooperation."