On January 11th, Guangdong Provincial Communication Group announced that the steel deck pavement of the Shenzhen-Zhongshan Link, China's national-level project and a core transportation hub in the Guangdong-Hong Kong-Macao Greater Bay Area, has been completed. At 1 p.m. that day, with the completion of the asphalt paving on the right side of the flood discharge area of the Lingdingyang Bridge in the Shenzhen-Zhongshan Channel, the steel bridge deck pavement of the project was successfully finished, marking the high-quality completion of the world's largest-scale hot-mixed epoxy asphalt paving project.

The Shenzhen-Zhongshan Link is a cross-sea cluster project connecting bridges, islands, tunnels, and underwater interchanges. With a total length of approximately 24 kilometers, the steel deck pavement covers a total area of 380,000 square meters, making the bridge the largest-scale one of its kind in the world.

"The hot-mixed epoxy asphalt system is a typical steel deck pavement solution in China that can withstand heavy traffic," said Mao Nongping, Chief Engineer of the S15 Section of the Shenzhen-Zhongshan Channel by Poly International Changda Engineering. The hot-mixed epoxy asphalt system boasts comprehensive characteristics such as high modulus, high toughness, wear resistance, and fatigue resistance. It exhibits excellent long-term performance during usage, better ensuring the durability, service quality, and driving comfort of the road surface.

It is understood that the construction of hot-mixed epoxy asphalt pavement requires highly advanced techniques and precision control. To meet the challenges posed by the harsh weather and high salt and high-temperature conditions of the sea surrounding the Shenzhen-Zhongshan Link, as well as to enhance the quality of steel bridge deck pavement, the construction team has created three innovative intelligent pavement systems using epoxy asphalt. This has significantly improved construction efficiency, control accuracy, and engineering quality, with a daily paving capacity of up to 30,000 square meters. In 2023, the project broke the world record for the daily construction area of hot-mixed epoxy asphalt for steel paving bridges three times.

Currently, the construction of various projects in the Shenzhen-Zhongshan Link has entered the final stage for opening to traffic. Mechanical and electrical, civil engineering, traffic safety, and other ancillary projects have once again ushered in a construction boom. The installation and construction of bridge guardrails and expansion joints are progressing simultaneously. During the Spring Festival period, all projects will continue to maintain their progress without slowing down. It is reported that concrete asphalt pavement inside the underwater tunnel will commence after the 2024 Spring Festival.

Source:Yangcheng Evening News

深中通道环氧沥青钢桥面铺装收官

1月11日，广东交通集团发布消息，国家重大工程、粤港澳大湾区核心交通枢纽深中通道完成全部钢桥面铺装施工。当天下午1时，随着深中通道伶仃洋大桥东泄洪区右幅沥青摊铺结束，深中通道钢桥面铺装圆满完成，同时标志着世界上最大规模的热拌环氧沥青钢桥面铺装工程高质量完工。

深中通道是集“桥、岛、隧、水下互通”于一体的跨海集群工程，全长约24公里，钢桥面铺装总面积达到38万平方米，是当前世界最大规模的热拌环氧沥青钢桥面铺装工程。

“热拌环氧沥青体系是国内适应繁重交通较为典型的钢桥面铺装方案。”深中通道保利长大S15标项目部总工程师毛浓平介绍，热拌环氧沥青体系具有高模量、高韧性、耐磨耗、抗疲劳等综合特点，在使用过程中表现出优良的长期路用性能，能够更好保障路面耐久性、服务质量和行车舒适度。

据了解，热拌环氧沥青铺装对施工技术和精细化控制要求极高，同时为更好地适应深中通道外海多变的气候条件及高盐高温的环境，全面提升钢桥面铺装质量，建设团队自主研发了环氧沥青智能铺装三大系统，大幅提升了施工效率、控制精度和工程质量，每日铺装产能可达3万平方米，2023年曾三次刷新单日热拌环氧沥青钢桥面铺装施工面积的世界纪录。

目前，深中通道项目各项工程建设已进入通车冲刺期，机电、房建、交安及其他附属工程再度掀起建设热潮，桥梁护栏、伸缩缝的安装施工同步推进，春节期间各项工程将持续保持进度不减速。据悉，2024年春节后将开始海底隧道内混凝土沥青路面施工。

文、图｜记者 王丹阳 通讯员 粤交集宣 粤路建 沈仲 陈文欣 何兴健
译｜陈萱