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Pulling of rail, 40 kN vertical load The maximum tensile and compressive loads obtained during the performed tests are summarized in the Table 1.
Source publication
The superstructure of railway track is set out to significant internal forces so there are separate technological regulations that refer to the determination of technological parameters of certain structural elements and to their minimal values. This study shows the possibility that performing measurements that are different from the standard dispo...
Context in source publication
Context 1
... rail with constant tensile load did not slipped in the rail fastening slowly, but suddenly shifted (E.g. Figure 4). Because of its appearance and comparability in practice, further on we compared those tensile or compressive loads, effect of which in the rail fastening system for the first time increased sharply. ...
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Citations
... Tension fasteners of different types are objects of investigation, the results of which are closely related to the geometry of the investigated elements. Such investigations include laboratory mechanical tests 38,39 , including fatigue tests 40 and FEM clamp tension modelling 41 . SB tension clamps are components of rails used by PKP Polskie Linie Kolejowe S.A. (PKP PLK S.A). ...
The paper presents comparative laboratory investigations of tension fastener models that attach rails to concrete sleepers. The aim of the paper was to assess the influence of geometric nonconformity of the actual industrial product that meets the PKP Polskie Linie Kolejowe S.A. requirements on the operation of a tension-fastening clamp under stress. Due to the cost and limited possibility of research of the actual industrial product, an additional objective of the research was to validate the usefulness of it in the comparative assessment of the models. In the research, the authors used models of tension fastening clamps manufactured in incremental engineering technology (3D print) on scale 1:2. The properties of the fastening clamps (in their nominal shape) were compared (described in the PKP Polskie Linie Kolejowe S.A. documentation) with the fastening clamps of the actual shape. In the investigation, the authors have confirmed the negative influence of the non-conformance of the shape of the actual fastening clamps with the nominal ones.
