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The Gyeongbu KTX (Korea Train Express) between Seoul and Busan is South Korea’s first high speed electric railway line and connects the north and south part of the country. Travellers from Seoul now reach Busan within less than 3 hours.
The high speed railway line has a total length of 423.8 km. Four new stations have been constructed to accommodate increased traffic between the regions and are set to open in conjunction with the new line.
Top speed for trains in regular service currently lies at 305 km/h (190 mph), though the infrastructure is designed to reach speeds of 350 km/h (217 mph).
mageba supplied two RESTON-SA hydraulic dampers, each with a force capacity of 1,500 kN and allowing movements of ±100 mm (seismic design displacement ±30 mm). The dampers were designed according to the equation F = CVa, with C = 2,950 kN m/s, V = 0.259 m/s and α = 0.5 / 0.4.
As this type of bearings are velocity-dependent devices, they primarily consist of a piston in a fluid-filled cylinder. Moreover, they allow free movements of a structure during service conditions, but control displacements and dissipate energy during sudden movements caused, for example, by earthquakes or exceptional traffic forces.
RESTON-SA hydraulic dampers
High speed railway bridge
Korea Rail Network Authority
Korea Infrastructure Safety Corporation