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Seismic yield accelerations of MSW landfills by pseudo-dynamic approach

DSpace at IIT Bombay

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Title Seismic yield accelerations of MSW landfills by pseudo-dynamic approach
 
Creator CHOUDHURY, D
SAVOIKAR, P
 
Subject RETAINING WALL
DESIGN
STABILITY
Municipal solid waste landfills
Limit equilibrium method
Pseudo-dynamic
Seismic accelerations
Factor of safety
 
Description Estimation of seismic yield acceleration for the municipal solid waste landfills is the basic step for design to mitigate the hazard of earthquake on landfills. For most of the landfills constructed in the seismic zones, influence of the vertical component of seismic acceleration is often neglected assuming that it is not in phase with the horizontal seismic acceleration and hence does not affect the design parameters largely. Conventional pseudo-static analysis using limit equilibrium method does not consider the variation of seismic inertial forces with time and also effect of vertically propagating shear and primary waves, which can have serious effect on the design values. To overcome the limitations of existing methodology, in the present study, pseudo-dynamic approach, which takes into account the effects of time, primary and secondary waves, frequency of excitation, is applied for the first time for dynamic analysis of landfills for three different typical practical geometries of landfills. Chosen sets of landfills resemble some of the existing landfill geometries. Design equations and charts are developed for factor of safety against base sliding and seismic yield acceleration for these three typical landfill geometries. The results are compared with the similar results obtained by using conventional pseudo-static analysis, and the influence of vertical seismic acceleration on factor of safety against base sliding and yield acceleration is reported.
 
Publisher SPRINGER
 
Date 2012-06-26T05:54:02Z
2012-06-26T05:54:02Z
2011
 
Type Article
 
Identifier NATURAL HAZARDS,56(1)275-297
0921-030X
http://dx.doi.org/10.1007/s11069-010-9568-8
http://dspace.library.iitb.ac.in/jspui/handle/100/13979
 
Language English