scholarly journals Prerequisites for Increasing the Axle Load on Railway Tracks in the Czech Republic

10.14311/1063 ◽  
2008 ◽  
Vol 48 (6) ◽  
Author(s):  
M. Lidmila ◽  
L. Horníček ◽  
H. Krejčiříková ◽  
P. Tyc

This paper deals with problems of increasing the axle load on Czech Railways (ED) tracks to 250 kN or 300 kN, respectively. The results of a numerical analysis of the effects of increased axle loads on the track bed structure were verified by experimental measurements carried out on track bed construction models in an experimental box on a 1:1 scale. The results of the research are applicable for routine use on ED. 

Geografie ◽  
2003 ◽  
Vol 108 (2) ◽  
pp. 101-114
Author(s):  
Michal Bíl

This paper discusses the advantages of GIS and numerical analysis in neotectonic studies. An accurate DEM is important for numerous geomorphic and hydrologic applications, particularly over large areas. The method is illustrated on the DEM of the Vsetínské vrchy Mountains, a 367 square km large area in the east of the Czech Republic. Comparing geological maps with large-scale morphometry shows a relationship between the rock resistance and topography. On average, higher mean elevations and steep slopes correlate well with regions of hard bedrock geology. The results together with new geological and geophysical findings show that the evolution of this part of the Outer Western Carpathian topography was proceeding continually. There is no reason to assume the presence of any periods of tectonic standstill here. The topographic relief probably has experienced the state of dynamic equilibrium.


2016 ◽  
Vol 249 ◽  
pp. 160-165 ◽  
Author(s):  
Petr Bílý ◽  
Josef Fládr

The paper summarizes the results of numerical analysis conducted with the aim to compare the distribution of stresses in masonry pillars constructed using different bricklaying techniques. The analysis was carried out in reaction to the discussion of members of Czech standardization committee TNK 37 – Masonry structures. Currently, most of masonry load-bearing structures in the Czech Republic are made from clay blocks without mortar in perpend joints. The analysis seeks the answer to the question whether it is possible, in case of the eccentrically loaded masonry pillars with unfilled perpend joints, to consider the value of design compressive strength calculated using the same approach as for pillars with filled perpend joints for the check of vertical load resistance. Supplementary comparison of the behavior of the pillars with filled and unfilled perpend joints loaded by lateral load in the plane of the pillar (corresponding to short shear walls) was also conducted. 2D FEM model created in ATENA Science software was exploited for the analysis. The results confirmed that the approaches contained in ČSN EN 1996-1-1 [1] are basically applicable for pillars with unfilled perpend joints.


GeroPsych ◽  
2012 ◽  
Vol 25 (3) ◽  
pp. 161-166
Author(s):  
Hana Stepankova ◽  
Eva Jarolimova ◽  
Eva Dragomirecka ◽  
Irena Sobotkova ◽  
Lenka Sulova ◽  
...  

This work provides an overview of psychology of aging and old age in the Czech Republic. Historical roots as well as recent activities are listed including clinical practice, cognitive rehabilitation, research, and the teaching of geropsychology.


2000 ◽  
Vol 5 (1) ◽  
pp. 62-65 ◽  
Author(s):  
Jiří Hoskovec ◽  
Josef M. Brožek

1994 ◽  
Vol 105 (7-8) ◽  
pp. 481-497
Author(s):  
Z. Neuhäuslová ◽  
J. Kolbek

Sign in / Sign up

Export Citation Format

Share Document