Abstract
The paper presents mathematical equations of dependence of deformation resistance (compaction degree) and static/dynamic deformation module of elasticity reached by experimental measurements at laboratory model of scale 1:1 in 2003 and 2004. Recommendations for practice from the point of view of dimensioning and suitability of applied materials into the railway substructure are also presented.
Highlights
Intensity of traffic loading of a railway construction is a basic factor which influences its composition and arrangement to fulfil the expected function during its durability
Even small defects in geometrical rail position caused by permanent deformations of the railway substructure or the whole ground body subsidence can bring the growth of dynamic strengths having the impulse effect which exceeds the static loading
Deformation characteristics of the examined railway substructure models were determined by static and dynamic loading tests according to the mended annex No.20 of the regulation S4 “Railway Substructure” [1]
Summary
Intensity of traffic loading of a railway construction is a basic factor which influences its composition and arrangement to fulfil the expected function during its durability. Even small defects in geometrical rail position caused by permanent deformations of the railway substructure or the whole ground body subsidence can bring the growth of dynamic strengths having the impulse effect which exceeds the static loading This fact can lead to decrease of traffic safety, and to the further degradation of the railway substructure. The theory of elastic half-space by Ivanov, known as Dornii method is used for calculating substructure layers thickness Limited conditions of this theoretical solution do not allow to take into consideration a number of factors influencing the construction deformation resistance (bearing capacity), e.g. the type of ground material from the point of view of its granularity, the condition of built-in material from the point of view of its compaction and synergism of individual construction elements Advancing diagnostics of the deformation resistance (bearing capacity) of the construction is monitored on this model
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Communications - Scientific letters of the University of Zilina
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
