Journal of
Faculty of Civil Engineering


FACULTY JOURNALS
SCIENTIFIC MEETINGS
ARCHIVE







CONFERENCE PROCEEDINGS
7th INTERNATIONAL CONFERENCE
CONTEMPORARY ACHIEVEMENTS IN CIVIL ENGINEERING 2019 , 2019.y., pp. 641-648


CONTROL AND ANALYSIS OF THE STATE OF TIMBER SLEEPERS
 
DOI: 10.14415/konferencijaGFS2019.059
UDC: 625.142
CC-BY-SA 4.0 license
Author : Dimitrijević, Jelena; Jovanović, Jelena
 
 Summary:
 Railway sleepers are infallible element in railway track system. Their function is multiple. Hardwood timber is the most frequently used material for railway sleepers. After projected life period, most of railway sleepers become less capable of meeting performance demands. It is very important task in maintenance process to control increasing of axle loading on railway, and to prove sleeper's ability for further utilization. Maintenance costs of timber sleepers increased in recent years. Railway sleeper inspections for a long time were done by hand. This process requires skilled and trained staff. Automatic condition monitoring considers a variety of methods and procedures for examination of uniformity, quality and serviceability of construction, without causing damage to it. Automatic vision systems collects images in precisely determine area. After taking images, pattern recognition approach serve to classify the condition of the sleeper into classes, good or bad. Determination of causes for sleeper failures is crucial to minimise track maintenance costs. Besides mechanic cracks in timber, there are also several reasons for sleeper damage. Environmental societies favor use of non toxic materials in production of timber sleepers. It is recommended to use biological wood protection methods, in accordance with environmental regulations. Totally destroyed sleepers has to be replaced with proper kind, according to loadings and maintenance possibilities. New age sleepers from composite materials could replace concrete and steel sleepers, but need to be more investigated in performans on real truck.
 
 Keywords:
 timber sleeper, loading calculation, monitoring, sleeper maintenance, composite sleeper, biological wood protection