Opis
In the paper several specified models of ballast longitudinal resistance to behaviour of CWR track have been analysed. The considered problem is connected with local track segments in which horizontal displacements of rail cross-sections occur. The displacements occur mainly because of real non-uniform temperature distributions over the length of CWR track (e.g. variable insolation of rail, variable temperature of rails to sleepers fastening) [11, 12, 16]. On the grounds of empirical characteristics, the obtained formulae and dependences allowed an analysis of displacement distribution along the track and also an examination of forces and stress distribution. Similar phenomenon also occurs within the so-called ‘breathing’ ends of CWR track [5,9]. A significant influence of railway works (e.g. railway tamping) on a range of local temperature changes interaction along the track has been shown [1, 2]. Spis treściWłodzimierz Andrzej BEDNAREK The influence of ballast longitudinal resistance on axial displacement state in CWR track due to local rail temperature changes 5 Joanna FRONCZYK, Kazimierz GARBULEWSKI Application of POLLUTE v.6 program in the interpretation of contaminant transport in PRB 21 Cyril GRUAU, Didier PICART Numerical prediction of high explosive ignition under low velocity impact 33 Maciej GRYCZMAŃSKI, Rafał ULINIARZ A simple critical state model with small strain nonlinearity for overconsolidated soils 49 Katarzyna MARKOWSKA-LECH The determination of shear modulus in overconsolidated cohesive soils 61 L. VAN PARYS, T. DESCAMPS, D. LAMBLIN, G. GUERLEMENT The recourse to evolutionary strategies for the limit calculation of voussoir arches in heritage buildings 73 Piotr SROKOSZ Back analysis in geotechnics – examples of shape determination 87