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Nonlinear soil–structure interaction of retaining walls with pulse-like earthquakes

 Nonlinear soil–structure interaction of retaining walls with pulse-like earthquakes
Author(s): , ,
Presented at IABSE Symposium: Challenges for Existing and Oncoming Structures, Prague, Czech Republic, 25-27 May 2022, published in , pp. 1543-1550
DOI: 10.2749/prague.2022.1543
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Near fault earthquakes have been distinguished for their probability of having pulse-like characteristics with higher velocity time history amplitudes. This could be significant for retaining walls...
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Bibliographic Details

Author(s): (PhD Candidate, Department of Civil Engineering and Surveying, University of Puerto Rico - Mayagüez Campus)
(PhD Candidate, Department of Civil Engineering and Surveying, University of Puerto Rico - Mayagüez Campus)
(Professor, Department of Engineering Science and Materials, University of Puerto Rico - Mayagüez Campus)
Medium: conference paper
Language(s): English
Conference: IABSE Symposium: Challenges for Existing and Oncoming Structures, Prague, Czech Republic, 25-27 May 2022
Published in:
Page(s): 1543-1550 Total no. of pages: 8
Page(s): 1543-1550
Total no. of pages: 8
DOI: 10.2749/prague.2022.1543
Abstract:

Near fault earthquakes have been distinguished for their probability of having pulse-like characteristics with higher velocity time history amplitudes. This could be significant for retaining walls found in bridges and nuclear power plant buildings. Several two-dimensional numerical models of an embedded wall-soil system were developed in Abaqus® by varying the wall rigidity and friction coefficient between the wall and soil. The friction coefficient was varied from 0 to 0.5. In one model, the wall is very rigid and in the other the wall is flexible with original modulus of elasticity. Seismic pressures in the soil-wall system are evaluated. The analyses are performed considering non-pulse and pulse-like motions that match a narrow-band modified target spectrum for a moment magnitude of 7.70. The objective is to study how the soil-wall system is affected by pulse-like seismic events and how the contact conditions affect this response.

Keywords:
friction coefficient retaining walls pulse-like motions seismic pressures contact conditions
Copyright: © 2022 International Association for Bridge and Structural Engineering (IABSE)
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