其中，合建段主桥长度1.411千米，主跨808米，创新性采用世界首创的公铁合建超短边跨钢混箱桁组合 梁斜拉桥新结构体系，上层布设八车道城市快速公路，下层铺设四线高速铁路，实现公铁交通的高效融 合。 据介绍，洪奇沥水道公铁大桥49号、50号两座主塔均采用"H"型设计，塔身采用C60高强混凝土，分47 个施工节段逐步浇筑而成。面对复杂的建设挑战，施工团队依托自主创新与技术攻关，攻克了一系列工 程难题。 在基础施工阶段，针对主墩4米超大直径钻孔桩成桩难题，采用中铁大桥局自主研发的"KTY5000型旋转 钻"搭配旋挖钻机的组合施工方案，充分发挥不同钻机在不同地质条件下的优势，大幅提升成孔质量与 施工效率，不仅实现单桩成孔最快7天完成的高效进度，更在100天内优质完成两座主墩70根4米桩基的 施工任务。 1月11日上午，随着最后一方混凝土浇筑完成，深江铁路洪奇沥水道公铁大桥50号墩主塔顺利封顶，塔 高达到258米，相当于80余层楼房高度。 至此，这座大湾区关键交通工程的两座主塔全部完成封顶，标志着深江铁路建设取得阶段性重大突破， 迈入中跨主梁架设及斜拉索施工阶段。 洪奇沥水道公铁大桥是深江铁路全线的控制性工程之一。该桥 ...

Core Viewpoint - The announcement of the construction and bidding for the Luo Hu Bei Station of the Shenzhen-Dongguan-Shenzhen High-Speed Railway indicates significant infrastructure development in the Guangdong region, aiming to enhance connectivity and transportation efficiency in the Greater Bay Area [1][3][4] Group 1: Project Overview - The Luo Hu Bei Station is planned to start construction by the end of September 2025 and is expected to be completed by the end of November 2027 [1][3] - The station will be an underground structure with four levels, featuring two platforms and four tracks, with a total length of approximately 600 meters and a width ranging from 23.6 to 43 meters [3] - The project is part of the Shenzhen-Dongguan-Shenzhen High-Speed Railway, which spans 125.52 kilometers with a design speed of 350 kilometers per hour, and is fully funded by Shenzhen City with an estimated cost of 48.79 billion yuan [4] Group 2: Connectivity and Integration - Luo Hu Bei Station will serve as a key hub integrating multiple transportation lines, including the Shenzhen-Dongguan-Shenzhen High-Speed Railway, Metro Lines 3, 14, 17, 25, and intercity railways, enhancing the transportation network in the eastern Greater Bay Area [3][4] - The completion of the high-speed railway is expected to create a "30-minute traffic circle" between the Shenzhen Special Cooperation Zone and the city center of Shenzhen [4] - Another station, Shen Shan Station, is also under construction and will serve as a junction for the Guang-Shan High-Speed Railway and the Shenzhen-Dongguan-Shenzhen High-Speed Railway, with a total building area of 356,000 square meters [4]

Core Points - The construction of the connection project between the Lion's Mouth Channel and the Guangzhongjiang Expressway officially commenced on July 29, with an expected completion date in 2027 [1] - The project aims to enhance traffic efficiency and safety by addressing the mismatch in lane numbers between the Lion's Mouth Channel and the Guangzhongjiang Expressway [3] - The South Zhong Bridge's widening is a key focus of the project, which will involve expanding the bridge to accommodate eight lanes of traffic, aligning with the design of the Lion's Mouth Channel [3] - The Lion's Mouth Channel project is a significant infrastructure initiative in the Guangdong-Hong Kong-Macao Greater Bay Area, featuring a total length of approximately 35 kilometers and a dual-layer design with 16 lanes [4] Project Details - The connection project spans 2033 meters and includes the widening of two bridges and the renovation of one interchange [1] - The South Zhong Bridge will undergo a unique widening process, marking the world's first central cable-stayed bridge widening project [3] - The Guangzhongjiang Expressway traverses four cities, enhancing connectivity between cities on the west and east banks of the Pearl River [4] Construction Progress - The East main tower of the Lion's Mouth Bridge has completed the installation of the T32 steel shell segment, with both main towers exceeding half of their height at 171.1 meters [5] - The anchorage system construction for the main tower is ongoing, with expectations to surpass 200 meters in height by the end of the year [5] - The lower structure of the approach bridge has been completed, transitioning into the next phase of construction [5]

Group 1: Infrastructure Development - The Shenzhen-Dazhong Intercity Railway has reached a key engineering milestone with the successful launch of the first tunneling machine, marking the start of the construction phase for the auxiliary structures at Longsheng Station [1] - The Shenzhen section of the railway spans 69.2 kilometers with 11 underground stations and a design speed of 160 km/h, significantly reducing travel time from Shenzhen Bao'an International Airport to Pingshan to 40 minutes [1] - The project is expected to be completed and operational by November 2026, enhancing connectivity across the Shenzhen metropolitan area and integrating with 19 metro lines [1] Group 2: Urban Transportation Network - Bao'an District is developing a dense and interconnected urban transportation network, comprising 11 metro lines and 3 intercity railways, making it one of the busiest rail transit areas in the Greater Bay Area [2] - The operational metro lines form a backbone network, with the completion of the second phase of Line 12 expected by the end of 2024, linking key urban areas [2] - The ongoing construction of the Suiguan-Shenzhen Intercity Railway is set to enhance cross-city commuting, achieving a one-hour travel time to Guangzhou and Dongguan upon completion in 2025 [2] Group 3: Aviation Hub Expansion - Bao'an International Airport is undergoing expansion to enhance its international competitiveness, with a total investment of 123.3 billion yuan for the new runway expected to be operational by the end of 2025 [3] - The airport's annual passenger capacity will increase to 80 million and cargo throughput to 2.6 million tons, representing a nearly 30% expansion [3] - The T2 terminal expansion project, with an investment of 30.124 billion yuan, is scheduled for completion in 2026, further optimizing airport facilities [3] Group 4: Road Traffic and Smart Mobility - The road traffic network in Bao'an is being upgraded with the addition of 9 new interchanges on the Beijing-Hong Kong-Macau Expressway, improving connectivity with major highways [4] - The completion of the Shenzhen side connection of the Shenzhong Tunnel has alleviated traffic pressure in the area [4] - Bao'an is implementing smart traffic initiatives, including low-altitude video monitoring and intelligent signal control, to enhance traffic efficiency [4] Group 5: Integrated Transport Hubs and Regional Collaboration - The Shenzhen International Convention and Exhibition Center hub integrates multiple transport modes, becoming a core traffic center in the western area [5] - The completion of the Shenzhong Tunnel will facilitate rapid connections with Zhongshan, while the intercity railways will form a "Y" shaped network to promote urban integration [5] - Bao'an is also focusing on low-altitude economy development, establishing drone testing bases and promoting new logistics and commuting services [5] Group 6: Traffic Management and Public Services - Bao'an District is enhancing traffic management in response to the needs of the Tencent "Internet+" Future Technology City, including the closure of abandoned sites and the introduction of shuttle buses [6] - Traffic models are being used to predict congestion points, leading to infrastructure improvements that enhance road capacity and efficiency [6] - The construction of pedestrian-friendly pathways in the Bao'an central area aims to integrate transportation functionality with urban quality [6]