基于广义距离变换算法的高铁施工便道智能优化方法研究

Methodology for alignment optimization of high-speed railway construction access roads based on a generalized distance transform

针对复杂地质条件下高铁施工便道的选线问题,基于绿色建造视角,引入广义距离变换算法,将空间距离拓展为包含便道线路方案长度、各类工程量和土地占用影响等多目标的广义距离,构建便道线路优化模型,应用距离变换算法,采用双向扫描策略进行施工便道线位搜索,基于弦切支距法和方向加速法优化获得最终线路方案。通过实际案例分析,验证了方法的有效性,为类似施工便道的选线和优化提供理论与方法参考。

Aiming at the problem of alignment optimization for high-speed railway construction access roads under complex geological conditions and from the perspective of the green construction, this paper introduced a generalized distance transform, which expands the spatial euclidean distance into a generalized distance considering multi-objectives such as the road length, various types of engineering quantities, and right-of-way costs. Firstly, a construction access road optimization model was constructed. Secondly, the distance transform with a bidirectional scanning strategy was applied to search access road alignments automatically. Finally, the final alignment solutions can be obtained based on a string cutting distance method and a direction acceleration optimization method. Through the detailed result analyses of an actual case, the effectiveness of the method was verified. The theory and method can serve as references for the alignment design and optimization of similar construction access roads.