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Dynamic active earth pressure on retaining structures

DSpace at IIT Bombay

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Title Dynamic active earth pressure on retaining structures
 
Creator CHOUDHURY, DEEPANKAR
CHATTERJEE, SANTIRAM
 
Subject earth (planet)
civil engineering
earthquake effects
mathematical models
pressure effects
 
Description Earth-retaining structures constitute an important topic of research in civil engineering, more so under earthquake conditions. For the analysis and design of retaining walls in earthquake-prone zones, accurate estimation of dynamic earth pressures is very important. Conventional methods either use pseudo-static
approaches of analysis even for dynamic cases or a simple single-degree of freedom model for the retaining wall–soil system. In this paper, a simplified two-degree of freedom mass–spring–dashpot (2-DOF) dynamic model has been proposed to
estimate the active earth pressure at the back of the retaining walls for translation modes of wall movement under seismic conditions. The horizontal zone of influence on dynamic earth force on the wall is estimated. Results in terms of displacement,velocity and acceleration-time history are presented for some typical cases, which show the final movement of the wall in terms of wall height, which is required for the design. The non-dimensional design chart proposed in the present study can be used to compute the total dynamic earth force on the wall under different input ground motion and backfill conditions. Finally, the results obtained have been compared with those of the available Scott model and the merits of the present results have been discussed.
 
Publisher Indian Academy of Sciences
 
Date 2007-01-18T11:10:58Z
2011-11-25T12:43:48Z
2011-12-26T13:08:52Z
2011-12-27T05:34:14Z
2007-01-18T11:10:58Z
2011-11-25T12:43:48Z
2011-12-26T13:08:52Z
2011-12-27T05:34:14Z
2006
 
Type Article
 
Identifier Sadhana 31(6), 721-730
http://hdl.handle.net/10054/43
http://dspace.library.iitb.ac.in/xmlui/handle/10054/43
 
Language en