桂林这条在建高速公路取得重大进展！两县车程将缩短至40分钟！

Core Viewpoint - The successful completion of the New Fujiang Bridge marks a significant milestone in the construction of the Quanshan Expressway, indicating that the main line is nearly fully connected and laying a solid foundation for timely operation [1][3]. Group 1: Project Overview - The New Fujiang Bridge is the largest continuous rigid frame bridge in the project, measuring 754 meters in total length, with a main span of 604 meters, constructed using a five-span prestressed concrete continuous rigid frame box girder [5]. - The bridge's mid-span section, which was recently completed, is 2 meters long and involved pouring 29.5 cubic meters of concrete, weighing approximately 80.5 tons [5]. Group 2: Construction Techniques - To ensure safety and quality during construction, the project team utilized a combination of hanging basket scaffolding and rigid support, along with a water bag weighting method for dynamic load adjustment [5]. - An automated monitoring system was employed to dynamically monitor the elevation and stress of the girder throughout the process, achieving millimeter-level precision in the connection of the completed section [5]. Group 3: Geographical Challenges - The New Fujiang Bridge is located in a karst landform area characterized by complex geological features, including caves and loose gravel layers, which posed significant challenges for pile foundation construction [7]. - The project team innovatively developed a 900-type rotary drilling method to effectively mitigate the risk of hole collapse in the complex strata, successfully completing 15 large-diameter cast-in-place piles with a diameter of 2.5 meters, with the longest reaching a depth of 44 meters underground [7]. Group 4: Project Significance - The Quanshan Expressway, which spans 75.102 kilometers, is a crucial part of the "Vertical 2" component of the Guangxi National Strategic Highway Network Plan (2018-2030) [9]. - Once completed, the expressway will significantly enhance transportation connectivity between northeastern Guangxi and the provinces of Hunan and Guangdong, reducing travel time from 90 minutes to 40 minutes between Quanzhou and Guanyang [10]. - The project is expected to play a vital role in improving the regional transportation system, supporting the development of Guilin as a world-class tourist city, and promoting high-quality economic and social development in the surrounding counties [10]. Group 5: Infrastructure Details - The new road section includes 67.767 kilometers of construction, with a 7.335-kilometer co-linear segment with the Quannan Expressway, designed to a standard of a four-lane expressway with a speed limit of 120 km/h [11]. - The project will feature four major bridges and 29 large bridges, accounting for 25.75% of the total route length, along with three hub interchanges, three general interchanges, one service area, and three toll stations [11].