关于铁路车站纵断面设计

由于车站纵断面与车站功能及规模没有直接联系,设计规范也只有取值范围,大部分设计要么取上限、要么取下限,设计中的问题往往被复杂的车站平面布置所掩盖。只有当车站标高与地面标高相差很大,工程艰巨,或者土石方超出常规的工程量时,才研究纵断面的合理性。实际上,车站纵断面除了从工程量、桥、隧或路基工点分析其合理性以外,更重要的是车站建成后纵断面对日常运营的影响,这是对作业效率更深层次的影响,影响长远且难以更正。对铁路车站纵断面设计进行深入的分析,以利于提高对车站纵断面设计的认识,掌握和处理好关键的问题。

Profile design of railway station

The defects arising out of the railway-station design are sometimes disguised by the complicated plain layout of the station due to the reasons that the station profile is not directly related to the station functions and scale and the design specification is only confined to numeric span,either the upper limit or the lower one of which is considered.Only when the station elevation has a far cry from the ground level thus causing great difficulty to the project or the earthwork exceeds the regular quantities,the reasonableness of the station profile begins to be studied.In fact,besides the quantities,bridges,tunnels or roads,it is more important to take into account the impact brought to the day-to-day station operation by the profile in analyzing its reasonableness.That kind of impact is a deep-rooted factor in estimating the project efficiency.It will last for a long term and be irrevocable.It will be beneficial for enhancing the cognition of the station profile design and grasping and coping with the key problems if the profile design of railway station is analyzed thoroughly.