HRSBallast: A collection of high-resolution, scanned railway ballast samples

HRSBallast is a collection of high-resolution, scanned railway ballast samples obtained from both a field installation and from a local quarry. The samples represent a variety of geometric properties, particularly the extend of rounding owing to in-service conditions experienced and as a function of the track performance. HRSBallast serves as a reference dataset for granular media (GM) simulations utilizing DEM (discrete element method), degradation or wear modelling, digital assets for the creation of synthetic datasets for deep learning applications, embedded railway instrumentation and video games requiring high resolution geometry.

The 108 digitized samples are provided in an STL (stereolithography) file format. Both the original resolution files are provided (HighRes.zip) alongside a decimated collection consisting of 1% of the number of points of the high resolution collection (LowRes.zip).
45 of the 108 scans samples represent the ballast samples collected from the field installation (15 samples each from three location). Each of the locations provided either angular, semi-angular of rounded ballast samples. These files are denoted as FA0-FA9 (field samples, angular), FB0-FB9 (field sample, semi-angular) and FC0-FC9 (field sample, rounded).
The remaining 63 samples were collected from the fresh ballast samples. Three experiments consisting of 10 samples each were carried out that produced these digital models:
+ fresh ballast (M00-M09) subjected to 100,000 load cycles in the small-scale box test, scanned again after the test (M10-M19),
+ fresh ballast placed in a concrete mixer for 15 minutes (M0A-M0J) and subjected to 100,000 load cycles in the small-scale box test, scanned again after the test (M1A-M1J), and
+ fresh ballast placed in a concrete mixer for 30 minutes (M0K-M0T) and subjected to 100,000 load cycles in the small-scale box test, scanned again after the test (M1K-M1T).
Note: an additional 3 files were created from ballast samples that fractured during testing.

The mass, volume, surface area and vertex count of each is provided in the spreadsheet / CSV file together with the samples identification number (Ballast_properties.xlsx). A high-resolution photograph of each sample is provided (SamplePhotos.zip).

List of files
+ Ballast_Properties.csv - 6 kb
+ Ballast_Properties.xlsx - 22 kb
+ HighRes.zip - 6.8 Gb
+ LowRes.zip - 66 Mb
+ SamplePhotos.zip - 320 Mb
+ scanning_process.MOV - 19 Mb

HRSBallast乃一套由实地安装及当地采石场获取的高分辨率铁路道砟样本集合。这些样本展现了多样化的几何特性，特别是由于服役状态的影响以及轨道性能所导致的圆滑程度。HRSBallast作为颗粒介质（GM）模拟、磨损或退化模型、用于生成深度学习应用合成数据集的数字资产、嵌入式铁路仪表及需高分辨率几何的电子游戏等领域的参考数据集。本集合包含108个数字化样本，采用STL（立体光刻）文件格式提供。其中，原始分辨率文件（HighRes.zip）与由高分辨率集合中1%的点数构成的简化集合（LowRes.zip）一并提供。

在108个扫描样本中，有45个代表了从实地安装收集的道砟样本（三个地点各15个样本）。每个地点提供了角形、半角形或圆形的道砟样本。这些文件分别标记为FA0-FA9（场地样本，角形）、FB0-FB9（场地样本，半角形）和FC0-FC9（场地样本，圆形）。剩余的63个样本则来自新鲜道砟样本。进行了三个包含10个样本的实验，产生了这些数字模型：

+ 新鲜道砟（M00-M09）在小型箱式试验中经受10万次荷载循环，测试后再次扫描（M10-M19），
+ 新鲜道砟放置于混凝土搅拌机中15分钟（M0A-M0J）并在小型箱式试验中经受10万次荷载循环，测试后再次扫描（M1A-M1J），
+ 新鲜道砟放置于混凝土搅拌机中30分钟（M0K-M0T）并在小型箱式试验中经受10万次荷载循环，测试后再次扫描（M1K-M1T）。

注意：此外，还创建了3个来自测试中破裂的道砟样本的文件。

每个样本的质量、体积、表面积和顶点数均提供在电子表格/CSV文件中，并附有样本识别编号（Ballast_properties.xlsx）。每个样本的高分辨率照片也一并提供（SamplePhotos.zip）。

文件清单
+ Ballast_Properties.csv - 6 kb
+ Ballast_Properties.xlsx - 22 kb
+ HighRes.zip - 6.8 Gb
+ LowRes.zip - 66 Mb
+ SamplePhotos.zip - 320 Mb
+ scanning_process.MOV - 19 Mb

搜集汇总

背景与挑战

背景概述

HRSBallast是一个包含108个高分辨率3D扫描铁路道砟样本的数据集，涵盖现场采集的磨损样本和采石场新鲜样本，提供STL格式的原始和降采样数据，附带样本属性和照片，适用于工程模拟和AI训练等应用。