基于多维空间相似理论的线路构造物单价估算方法研究

Estimation method of railway structure's unit price based on the theory of multi-dimensional space similarity

线路构造物单价是影响构造物优化分布结果的重要指标,估算的准确性是提高选线设计智能化水平的重要支撑。目前,对线路构造物单价估算方法的研究还不够成熟。通过建立基于GIS的路基、桥梁、隧道和涵洞等线路构造物信息库,输入各构造物对应的属性单元资料及造价信息,采用多维空间相似理论,利用建立的信息库和GIS强大的分析功能,可以实现新建线路中各构造物的属性匹配及单价估算,并应用于基于GIS的线路构造物优化分布中。

The unit price of railway structure is an important index affecting its optimum distribution, and the accuracy of the estimation can provide an significant support to improve the intelligent level of the railway line selection design. However, the research in the field of unit price estimation is not mature enough.According to the corresponding attributes of the construction unit and cost information, the structure database of subgrade, bridge, tunnel and culvert was built based on GIS. By using the theory of multi-dimensional space similarity and powerful analysis function of GIS, attribute matching and unit price estimation of the new railway were be realized through the established information database. It can also be applied to the optimal distribution of the railway structure based on GIS.