Analysis of a squat concrete wall, difference in translation during seismic excitation due to foundation support

E. R. Thorhallsson*, I. S. Rikhardsson, A. M. Olafsson, H. S. Olafsson

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this study a squat concrete wall is examined, and how different foundation support changes the wall's behavior during seismic excitation. A case is examined where the wall is rigidly fixed to the ground and the results are compared with a scenario where the foundation is allowed to rock and undergo translation on a thin 0.5 m gravel isolation layer. The wall and support were modeled using finite element method (FEM). The FEM calculations were carried out using the program ANSYS. The soil-structure interaction (SSI) model was separated into near-field and far-field using FEM to represent the near-field and viscous dampeners placed around the FEM model as boundary elements to represent the far-field. The results show that the difference in motion and energy dissipation is significant between a normally fixed base scenario versus the case where rocking and translation is allowed; the motion increases while stress decreases and the energy dissipation is due to the friction and pounding between the foundation and the support.

Original languageEnglish
Title of host publication9th US National and 10th Canadian Conference on Earthquake Engineering 2010, Including Papers from the 4th International Tsunami Symposium
Pages7158-7166
Number of pages9
Publication statusPublished - 2010
Event9th US National and 10th Canadian Conference on Earthquake Engineering 2010, Including Papers from the 4th International Tsunami Symposium - Toronto, ON, Canada
Duration: 25 Jul 201029 Jul 2010

Publication series

Name9th US National and 10th Canadian Conference on Earthquake Engineering 2010, Including Papers from the 4th International Tsunami Symposium
Volume9

Conference

Conference9th US National and 10th Canadian Conference on Earthquake Engineering 2010, Including Papers from the 4th International Tsunami Symposium
Country/TerritoryCanada
CityToronto, ON
Period25/07/1029/07/10

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