THE MINISTRY of Railways has decided to adopt the Rheda 2000 KH ballastless track design for around 95% of the Wuhan – Guangzhou Passenger Dedicated Line. Design, supply and construction are being supported by Beijing Rail.One, the local Chinese subsidiary of the Rail.One group. Rail.One is responsible for the overall quality of the Rheda 2000 track.

As well as the technology transfer agreement, the project scope includes technical support, training and inspection. Rail.One has supplied five twin-block sleeper manufacturing production lines for use by the five main contractors along the route, as well as two specialist lines for production of turnout sleepers. Between now and completion of the project in 2011, the company will also supply at least 11 sets of track construction equipment for use by the contractors.

Rail.One is providing construction supervision for the new station at Guangzhou, which will form the southern terminus of the new line, together with connecting lines to a new station at Huadu and the adjacent depot. In total this package includes 50·2 km of new line, designed initially for 200 km/h although the infrastructure is being designed for eventual operation at 350 km/h. The new station is due to become operational during 2008.

Rail.One is currently providing construction supervision services for Section 2 of the 115 km Beijing - Tianjin Passenger Dedicated Line, which is due to be operational in 2008. As well as civil engineering, bridge construction and tracklaying on the new line (right), the work includes supervising the E&M installation and overseeing a complete reconstruction of the existing Tianjin station.

As a trial for the use of ballastless track on the Chinese Railways network, Rail.One provided technical consultancy for the 12·6 km Shui-Yu pilot project completed in December 2005. This section of line has been designed for mixed passenger and freight operation at up to 200 km/h. Following on from this successful trial, Rail.One has been supervising civil works and E&M construction on the 166 km Fei-Ning Line, which is another mixed traffic line scheduled for completion by the end of this year. Passenger trains will operate at up to 200 km/h, and freight trains at a maximum of 120 km/h.

Rail.One has been responsible for design consultancy on the standard 24 m and 32 m simple box girder bridges adopted for operation at up to 250 km/h on the PDLs.

The company is also providing consultancy and construction supervision for the 9 273 m long Nanjing Dashengguan bridge, which will carry the 300 km/h Beijing – Shanghai high speed line over the Yangtze River. Due to be operational by November 30 2009, this structure includes a 5 596 m double-track approach viaduct at the north end and the four-track main bridge with four-track approaches at both north and south. In total the bridge will have 166 prestressed concrete simple box girder spans of 32·7 m plus the four span prestressed concrete continuous girder main bridge with spans of 40, 44, 44 and 40 m.