The whole Meijiang Super Bridge of Ruimei Railway was successfully completed

China News Service, Guangzhou, November 6 (Guo Jun, Hu Haiyan) The mid-span of the Zhanglong section of the Ruimei-Meijiang Railway Meijiang Bridge, built by the Shenzhen Engineering Construction Headquarters of the Guangzhou Bureau of the State Railway and constructed by the China Railway 15th Bureau Group, was successfully closed on the 5th, marking the completion of the entire Meijiang Bridge and a milestone breakthrough in the key and difficult bridge projects in the bidding section, clearing key obstacles for subsequent girder track laying and line construction.

Meijiang Super Large Bridge is a third-line bridge jointly built by Ruimei Railway and Longlong Railway. The starting and ending mileage of the bridge is DK241+228.659~DK242+158.485, the center mileage is DK241+693.555, and the total length of the bridge is 929.826 meters. This time, the continuous beams from piers 16 to 19 in Helong span the Zhanglong Railway at DK242+029.5, with an angle of 68° to the existing railway, and are close to the business line. The construction safety risks are high and the control requirements are strict.

In order to minimize the disturbance of the bridge construction to the existing railway operations and ensure the safety of trains on the existing lines, the project department set up special protective scaffolding within the continuous beam operation range to build a strong safety protection barrier for the existing lines. In view of the key and difficult issues such as high-altitude hanging basket operations, prestressed tensioning, linear control, and construction of railway-related skylight points, the project department established a special technical class to optimize the construction plan, carry out linear monitoring and stress monitoring throughout the entire process, strictly implement pre-shift safety education, hanging basket walking acceptance, concrete temperature control and maintenance and other measures, pay close attention to the connection of processes, strictly control construction accuracy, and steadily overcome the problems of suspended pouring construction across the existing railway.

Since the start of construction, the Shenzhen Engineering Construction Headquarters of the Guangzhou Bureau of China Railway has coordinated the design, supervision, and construction of all participating units, and consolidated the entire process of construction management. By scientifically allocating resources, dynamically optimizing construction organization, keeping a close eye on key node targets, coordinating team and machinery configuration, and strictly implementing technical disclosure and on-site process control. The project commando team and the youth team took root on the front line to overcome difficulties. They successively overcame difficulties such as complex geological conditions, strict control of railway-related construction, and heavy construction impacts during the rainy season. They steadily advanced the processes of piers, cast-in-place beams, hanging baskets, etc., and successfully completed the closure of the entire Meijiang Super Bridge.

The Meijiang Grand Bridge is fully closed, which is a milestone node in the construction of Ruimei Railway. The main body of this three-line cross-river controlled bridge jointly constructed by the Ruimei Railway and the Longlong High-speed Railway has been connected, opening up the entire line of girder channels, overcoming the cantilever pouring construction problem of large-span continuous beams across the river, and providing key support for traffic improvement, industrial revitalization, and red cultural tourism development in the old areas along the line.