Abstract
The static load plate test is the standard subgrade acceptance test for new or modernised railway lines. Examinations are performed at regular spacings on the track section and a lack of acceptance for even a single test disqualifies a section, forcing remedial treatments on the whole section. In this paper, a nondeterministic description of stiffness related to the spatial characteristics of acceptance measurement results is proposed for a more rational assessment of substructure quality. The concept is based on geostatistical analysis and one-dimensional distributions of stiffness values. The paper also proposes a new concept of rail infrastructure acceptance based on a reliability index already codified in European standards. The functioning of the postulated criterion is presented on the example of an existing railway line and the actual test results.
Subject
General Materials Science
Reference50 articles.
1. Influence of Soil Heterogeneity on the Contact Problems in Geotechnical Engineering
2. Design Requirements and Improved Guidelines for Design (Track Loading, Resilience & Rams). Towards an Affordable, Resilient, Innovative and High-Capacity European Railway System for 2030/2050,2014
3. Track Substructure Design Methodology and Data
4. Analysis of Compaction Standards Used in High-Speed Railway Subgrade;He;J. Railw. Sci. Eng.,2009