运用满意优化基本理论,提出铁路新线纵断面设计满意优化准则,通过设计满意度函数,构造出铁路新线纵断面设计满意优化数学模型及求解框架。 By using the basic theory of satisfaction optimization, the satisfaction criterion of longitudinal design for new railway lines is proposed. By satisfying the design satisfaction function, a mathematical model and its solution framework for the design of the new railway longitudinal profile are constructed.