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Rotation of Large Gravity Walls on Rigid Foundations under Seismic Loading
A pseudo-static model is developed for the prediction of permanent residual displacement of monolithic retaining walls in rocking. The model follows a Newmark approach, and is validated by comparison with experimental data of the behaviour of a large gravity wall subject to earthquake shaking. The experimental data show that rocking of retaining walls comprises two components, an elastic recoverable element and a permanent or residual component. The rocking model showed good agreement with the observed data, matching the total displacement closely after a series of five earthquakes. Comparison with conventional design approaches suggests that there is opportunity to reduce conservatism in the design of gravity walls prone to rocking by using a mechanism-specific model for the wall behaviour, particularly where the nature of the earthquake input motion can be defined.
Rotation of Large Gravity Walls on Rigid Foundations under Seismic Loading
A pseudo-static model is developed for the prediction of permanent residual displacement of monolithic retaining walls in rocking. The model follows a Newmark approach, and is validated by comparison with experimental data of the behaviour of a large gravity wall subject to earthquake shaking. The experimental data show that rocking of retaining walls comprises two components, an elastic recoverable element and a permanent or residual component. The rocking model showed good agreement with the observed data, matching the total displacement closely after a series of five earthquakes. Comparison with conventional design approaches suggests that there is opportunity to reduce conservatism in the design of gravity walls prone to rocking by using a mechanism-specific model for the wall behaviour, particularly where the nature of the earthquake input motion can be defined.
Rotation of Large Gravity Walls on Rigid Foundations under Seismic Loading
Steedman, R. S. (author) / Zeng, X. (author)
ASCE National Convention ; 1996 ; Washington, DC
2015-12-20
Conference paper
Electronic Resource
English
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