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oa Civil Engineer in South Africa - Spoorbaanagteruitgang onder herhalende stadigwiegende vertikale laste : 'n eenvoudige model : technical paper

 

Abstract

'n Enkelvryheidsgraadmodel word voorgestel vir die nabootsing van die gedrag van 'n drie-dimensionele spoorbaanstruktuur ondeworpe aan 'n vertikaal ossillerende aslas. Daar word getoon dat die klassieke statiese Winkler-model tot hierdie dinamiese model ontwikkel kon word. Die model is suksesvol teen 'n lineere laboratorium-model getoets. Die verloop van die progressiewe versakking van 'n spoorlyn wat die agteruitgang van die vertikale belyning onder herhalende vertikaal ossillerende aslaste veroorsaak, word met behulp van die model gevolg.

A single degree of freedom model is proposed to simulate the response of a three-dimensional trackstructure subjected to a vertical oscillating axle load. It is shown that a dynamic model could be developed from the classical static Winkler-model. The dynamic model was successfully verified against a linear laboratory model. The course of progressive track settlement, resulting in the deterioration of the vertical track geometry owing to uneven settlement under repeated vertically oscillating axle loads is traced with the help of the model.

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/content/civeng1/33/7/EJC25125
1991-07-01
2016-12-06
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