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
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Creator |
AHMAD, SM
CHOUDHURY, D |
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Subject |
pseudodynamic method
stability earthquake coastal engineering retaining walls seismic engineering |
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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.
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Publisher |
THOMAS TELFORD PUBLISHING
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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 |
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Type |
Article
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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 |
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Language |
en
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