三亚国际免税城三期项目主体结构已全面封顶。中建二局供图 作为海南自贸港重点商业标杆项目，三亚国际免税城三期坐落于海棠湾岸，建成后将协同一期、二期丰 富完善度假休闲体验，带动整体区域提升，进一步吸引境外消费回流，让海棠湾成为海南首屈一指的文 化商业旅游目的地。但项目建设从一开始就面临着多重考验，钟佳介绍："项目地处滨海区域，土层透 水性强，是全国单体面积最大的潮汐地下水降排水工程，潮汐波动对地下结构抗浮安全的影响，再加上 滨海高腐蚀性地质环境，都是我们必须攻克的行业难题。" ■ 海南日报全媒体记者 余佳琪 李艳玫 为破解潮汐地下水带来的抗浮难题，项目团队反复论证、创新实践，最终采用"抗浮锚杆+筏板基础"方 案，依托有限元法优化主动抗浮系统，搭配300毫米可调节泄压降水井，动态调整水泵深度与抽排时 段，还加装故障自动告警系统。"这套方案形成的'临海区域软弱地质条件下抗浮综合技术'还拿下了省 部级科学技术成果特等奖。"钟佳谈及这项技术成果，难掩自豪。 绿色低碳，也是项目建设的核心追求。这里将建成全国首例"光储直柔"净零碳商业综合体，打造超6万 平方米采光面水下光伏板，集成太阳能、储能直流配电及柔性用电系统，目前已立 ...

Core Viewpoint - The construction of the Sanya International Duty-Free City Phase III project has accelerated, with the main structure fully capped and various construction processes advancing simultaneously towards a phased completion goal by 2026 [4][6]. Group 1: Project Overview - The total construction area of the Sanya International Duty-Free City Phase III project is 412,700 square meters, and it is a key project in Hainan Free Trade Port [4]. - The project aims to enhance the vacation and leisure experience in the Haitang Bay area, attracting foreign consumer spending and positioning Haitang Bay as a premier cultural and commercial tourism destination in Hainan [4]. Group 2: Technical Challenges and Innovations - The project faced significant challenges due to its coastal location, including strong water permeability of the soil and high corrosion potential, necessitating innovative solutions for anti-floating safety and corrosion resistance [4][5]. - A comprehensive anti-floating technology was developed, utilizing "anti-floating anchor rods and raft foundations," along with a 300mm adjustable drainage well to dynamically manage water levels [4]. - The concrete used in the project has achieved a sulfate resistance level of KS120, significantly enhancing its impermeability and durability, with both core technologies reaching international leading standards [5]. Group 3: Construction Techniques and Sustainability - The project features the country's first prefabricated underground commercial complex, with a single underground area of 196,000 square meters, employing seamless construction techniques to minimize post-pouring joints [6]. - It is set to become the first "zero-carbon" commercial complex in the country, integrating over 60,000 square meters of underwater photovoltaic panels and a flexible power distribution system, currently recognized as a green low-carbon demonstration project in Hainan [6]. - The construction team is increasing personnel to nearly 1,000 as the project enters a peak construction phase, emphasizing safety, quality, and progress [6].

Core Insights - The Sanya International Duty-Free City Phase III project, undertaken by China State Construction Engineering Corporation (CSCEC) Second Bureau, has achieved full topping out [2] - The project covers a total construction area of approximately 412,700 square meters and has a total investment of 7 billion yuan [2] - The project is set to be completed in phases starting this year, aiming to enhance the duty-free shopping commercial layout in Hainan Province and enrich tourism consumption supply [2]

Core Insights - The Sanya International Duty-Free City Phase III project is under construction and is expected to be fully capped by December 30, 2025, with over 1,000 workers actively engaged in various construction activities [2][1]. Group 1: Project Overview - The total construction area of the project is 412,700 square meters, with a total investment of 7 billion yuan [2]. - The project is planned to be completed in phases starting from 2026, enhancing the overall vacation and leisure experience in the region [2]. Group 2: Economic Impact - The project aims to synergize with the first and second phases of the Sanya International Duty-Free City, which is expected to attract foreign consumer spending back to the area [2].

Core Insights - The Sanya International Duty-Free City Phase III project is currently under construction, with workers welding steel structures on the roof [2] - The first phase of construction is expected to be completed by August next year, with the contractor China State Construction Engineering Corporation (CSCEC) working to fully cap the main structure by the end of this year [2] - Once completed, the project will serve as a large commercial landmark integrating high-end shopping, cultural leisure, and diverse entertainment [2]