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设计铁路纵断面,就是要确定设计坡度线变坡点的位置(里程)和设计标高,使在满足《铁路工程技术规范》(以下简称《规范》)及其他技术要求的前提下,工程费或换算工程运营费最小。一般情况下,符合技术要求的方案很多,且计算工程费和运营费的工作量很大,因而不可能计算每个方案的工程费或换算工程运营费,然后逐一进行比选。传统方法是:由设计
The design of the longitudinal section of the railway is to determine the location (mileage) and the design elevation of the slope point of the design grade line so that the construction cost or the construction cost will be satisfied if the railway engineering specification (hereinafter referred to as the “Specification”) and other technical requirements are met Conversion project operating costs minimum. Under normal circumstances, there are many solutions that meet the technical requirements and the workload of calculating engineering fees and operating expenses is very large. Therefore, it is impossible to calculate the construction cost or conversion cost of each project and then conduct comparison and selection one by one. The traditional method is: by design