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Response of multilayer foundation system beneath railway track under cyclic loading

DSpace at IIT Bombay

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Title Response of multilayer foundation system beneath railway track under cyclic loading
 
Creator CHOUDHURY, DEEPANKAR
BHARTI, RAJEEV KUMAR
CHAUHAN, SIDDHARTH
INDRARATNA, BUDDHIMA
 
Subject clay minerals
cyclic loads
railroads
soils
 
Description For an efficient and economical design of a railway track system, it is necessary to understand the behavior of each track
component with special reference to ballast and subgrade, which play a pivotal role in distributing the large, cyclic wheel loads longitudinally, laterally, and vertically away from the wheel contact area on the rail surface to the underlying soil strata. This paper presents an analytical model of a track-ballast-subgrade system with different formation soils such as dense uniform sand, stiff clay, loose sand, and soft clay modeled by using a mass-spring dashpot system with two degrees of freedom. This represents the varying energy distribution through ballast and subgrade in the vertical direction. Results are presented in the form of time-displacement response profiles for both the ballast and subgrade layers. In addition, the magnification factors for displacements with variation in subgrade soils for cyclic loading frequencies are reported. It is observed that the results obtained from the present analysis follow the experimentally observed trends already available in the literature.
 
Publisher ASCE
 
Date 2009-08-17T04:24:18Z
2011-11-25T15:15:05Z
2011-12-26T13:04:45Z
2011-12-27T05:50:44Z
2009-08-17T04:24:18Z
2011-11-25T15:15:05Z
2011-12-26T13:04:45Z
2011-12-27T05:50:44Z
2008-10
 
Type Article
 
Identifier Journal of Geotechnical and Geoenvironmental Engineering 134(10), 1558-1563
1090-0241
http://hdl.handle.net/10054/1616
http://dspace.library.iitb.ac.in/xmlui/handle/10054/1616
 
Language en_US