基于四叉树存储的线路中线时空查询方法  

Spatio-temporal query method of line center line based on quadtree storage

作　　者：刘易诗 LIU Yishi(China Railway SIYUAN Survey and Design Group CO.,Ltd Wuhan 430063)

机构地区：[1]中铁第四勘察设计院集团有限公司线站院,武汉430063

出　　处：《铁道勘测与设计》2022年第3期1-5,19,共6页Railway Survey and Design

摘　　要：随着铁路建设飞速发展,线路设计方案数量激增,总体线路里程快速增加,传统采用表格和图纸形式管理线路方案数据的做法人工成本高,检索效率低,不能支持时间和空间查询,无法满足当前铁路数字资产化的发展需求。本文通过对线路中线在空间中进行近似表达,设计了一种基于四叉树划分的线路中线时空索引,并以分布式环境为基础,认真分析时空查询的原理和特点,提出了一套线路中线数据的存储管理和查询方案,实现了大规模线路中线数据的分布式存储,达到了对线路数据进行高效时空查询的目的。本文将这种方法对多个铁路工程项目进行应用实验,证明了该方法的可靠性和高效性,对于提高线路方案数据管理效率和铁路数字资产化发展具有重要意义。With the rapid development of railway construction,the number of railway route alignment has surged,and route mileage has increased rapidly.The traditional method of managing railway route data in the form of tables and design drawings has high labor management costs,low retrieval efficiency,and cannot support time and space queries.Meet the current development needs of railway digital assetization.This paper designs a space-time index of route center line based on quadtree division by approximate expression of route center line in space,and based on distributed environment,carefully analyzes the principle and characteristics of space-time query,and proposes a set of route center line.With the distributed storage of largescale route center line data,the data storage management and query scheme achieves the purpose of efficient space-time query for route data.This paper applies this method to several railway engineering projects,and proves the reliability and efficiency of this method,which is of great significance for improving the efficiency of route alignment management and the development of railway digital assetization.

关 键 词：铁路 线路数据 四叉树索引 时空查询 分布式存储 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]