Railways are an efficient transport mode, but building and maintaining railway tracks has a significant environmental impact in terms of CO2 emissions use raw materials. This is particularly true for slab tracks, which require large quantities concrete. They also more expensive to build than conventional ballasted less maintenance have other advantages that make them good alternative, especiall...

Higher train speeds and heavier axle loads trigger elevated stresses vibrations in the track, potentially increasing track deterioration rates maintenance costs. Alternative forms made of combinations reinforced concrete asphalt layers have been developed. A thorough understanding slab tracks is needed to investigate performance. Thus, analytical numerical models developed validated by many res...

We have developed a new theory for correcting track irregularities by applying their restored waveforms and carried out experimental levelling and lining work. In this theory, the optimum shifting/lifting values are obtained as solutions for a typical quadratic programming problem. Restrictions on shifting rails are formulated as constraint conditions of the optimization problem. Furthermore, i...