Transtainer:The character of environment protection, energy saving and high efficiency lead much more container yard owner to select rail type yard crane. But due to the difference between container yard and wharf apron space, the foundation is too soft so that the settlement occurredeasily. However, at the same time, wheel pressure requirements for yard crane are not so strict. Hence take better stability of rail fasten system, vibration reduction and wheel pressure uniform distributed into consideration when select yard crane rail system.