Spatial multi criteria analysis of ground conditions in early stages railway planning using analytical hierarchy process applied to viaduct-type rail in Southern Sweden

This study applies a spatial multi-criteria analysis to assess ground suitability for pier-supported viaduct railways using the Analytical Hierarchy Process (AHP). By integrating expert judgments, the analysis evaluates six key geotechnical categories—soil type, soil depth, rock type, slope, wetness...

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Vydané v:Engineering geology Ročník 348; s. 107962
Hlavní autori: Robygd, Joakim, Harrie, Lars, Martin, Tina
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Elsevier B.V 27.03.2025
Predmet:
Civil Engineering
decision making
Engineering and Technology
geology
Geotechnical Engineering and Engineering Geology
Geoteknik och teknisk geologi
Ground classification
groundwater
industrialization
Infrastructure Engineering
Infrastrukturteknik
Pier localisation
Planning
railroads
Samhällsbyggnadsteknik
soil depth
Suitability
Sweden
Teknik
uncertainty
Sweden
Planning
Pier localisation
Ground classification
Suitability
ISSN:0013-7952, 1872-6917
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Shrnutí:This study applies a spatial multi-criteria analysis to assess ground suitability for pier-supported viaduct railways using the Analytical Hierarchy Process (AHP). By integrating expert judgments, the analysis evaluates six key geotechnical categories—soil type, soil depth, rock type, slope, wetness index, and groundwater occurrence—to map ground suitability. Three weight normalisation methods were tested to explore how different normalisation approaches affect the resulting suitability assessments. The results reveal significant variations in suitability maps, highlighting how different expert weighting strategies can influence decision-making during early-stage railway planning. Uncertainty maps were generated and used to identify areas requiring further investigation. The methodology is applied to an area in Southern Sweden, between the cities of Lund and Hässleholm to compare the weighting strategies over a relevant and geologically diverse area. A practical application comparing foundation types along identified routes showed that AHP-guided pathfinding achieved a clear preference for ground conditions suitable for non-piled foundations compared to a reference line. The method provides a systematic framework for preliminary geotechnical evaluations in railway planning, enabling more focused site investigations and supporting industrialized construction approaches. •Ground suitability for railway planning was evaluated using the analytical hierarchy process.•Weights were normalized based on thinking patterns in pairwise comparisons and uncertainties propagated in the weights.•The normalisation highlights different aspects of the total suitability, allowing for compatibility with building codes.•Using uncertainties in combination with ground suitability allows for identification of key investigation areas.
Bibliografia:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0013-7952
1872-6917
DOI:10.1016/j.enggeo.2025.107962