Record Details

Seismic design factor for sliding of waterfront retaining wall

DSpace at IIT Bombay

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Title Seismic design factor for sliding of waterfront retaining wall
 
Creator AHMAD, SM
CHOUDHURY, D
 
Subject pseudodynamic method
stability
earthquake
coastal engineering
retaining walls
seismic engineering
 
Description A detailed methodology is presented for obtaining seismic design factors for sliding of a waterfront retaining wall using the pseudodynamic approach, which considers the effects of period of lateral shaking, shear and primary wave velocities, time, and seismic accelerations. Water is considered on both the upstream and downstream sides of the wall. Results are presented in terms of design factors for sliding: thrust factor F(Twet), inertia factor F(Iwet), and the combined dynamic factor F(Wwet). Using F(Wwet), the weight of the wall needed to maintain stability against sliding under seismic conditions is obtained. The variation in upstream and downstream water heights seriously challenges the sliding stability of the wall. Variation in the horizontal and vertical seismic acceleration coefficients, soil and wall friction angles, and period of lateral shaking have a significant effect on the stability design factors, whereas the effect of pore pressure ratio was found to be a minimum. The weight of the wall needed for a k(h) of 0.3 is almost double what would be needed if k(h) were zero. Comparison of results shows a good match with an existing methodology, but for the dry backfill case with no upstream water. Results for the wet case are claimed to be unique.
 
Publisher THOMAS TELFORD PUBLISHING
 
Date 2011-09-01T07:15:51Z
2011-12-26T12:59:32Z
2011-12-27T05:51:49Z
2011-09-01T07:15:51Z
2011-12-26T12:59:32Z
2011-12-27T05:51:49Z
2009
 
Type Article
 
Identifier PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-GEOTECHNICAL ENGINEERING, 162(5), 269-276
1353-2618
http://dx.doi.org/10.1680/geng.2009.162.5.269
http://dspace.library.iitb.ac.in/xmlui/handle/10054/12700
http://hdl.handle.net/10054/12700
 
Language en