Concrete tie
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Tie(Bi-Block) for high speed rail
It is a tie for a concrete track used for the main line track of high-speed railway operating at a maximum speed of 200 km/h to 350 km/h or less which has the dedicated routes, high acceleration and high deceleration performance and overall controlling apparatus. This tie distributes the load with its connection structure between the roadbed and block using the lattice-shaped rebar.
Item Name : Bi-Blocktie(KCT-Ⅱ tie)
Type: For 60kg
Applications: For installation of two-stage track of high speed railway
KR type rail track system
Korea Rail Network Authority and Korea Railroad Research Institute developed railway track system for concrete track application to help strengthen the nation's technological competitiveness and achieve diversification of supply sources through localization, alleviating current high reliance on imported components of rail track system.
Accordingly, our company is producing and delivering the Bi-block tie for high-speed railway concrete tracks under the license granted pursuant to the technical agreement with the Korea Rail Network Authority in 2017.
Comparative analysis
| Type | New Technologies | Existing Technologies | |
| KR Type Rail Connection Device | System 300-1 | SFC | |
| Schematic Diagram |  |
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| Construction Period |
- Assembled and delivered in temporarily connected state - Connection with general-purpose tools(torque wrench) - Mechanical connection is possible - 290m/day |
- Assembled and delivered in temporarily connected state - Connection with general-purpose tools(torque wrench) - Mechanical connection is possible - 290m/day |
- Assembled and delivered in temporarily connected state - Connection with general-purpose tools(torque wrench) - Mechanical connection is possible - 290m/day |
| Convenience |
- Temporary connection is possible - Insulation block not used - Screw spike type connection |
- Temporary connection is possibl - Screw spike type connection |
- Temporary connection is possibl - Connection spring integrated insulation block |
| Level of Technological Advancement |
- Excellent electrical resistance performance achieved by using the underplate which applied the engineering plastic - Reduction of the load transferred to the screw spike by the friction between Tie and underplate |
- Minimization of transverse load on the screw spikes by using the shape of Tie | - Leftward and rightward adjustment can be made by using the serrated washer as the base plate is fixed to the Tie by using the screw spikes based on shoulder connection method. |
| Vertical Static Stiffness(kN/nm) | 26.09(14.69%) | 28.9(4.15%) | 45.4(5.65%) |
| Initial Connection Force(kN) | 19.79(0.49%) | 16.9(10.65%) | 17.15(7.17%) |
| Longitudinal Resistance(kN) | 10.27(16.95%) | 14.4(12%) | 13.04(4.52%) |
| Electrical Resistance Performance(㏀) | 117.14 | 16.83 | 31.93 |
Detail drawing of tie for high-speed railway
Front view
Floor plan
Side view
