Seismic-Induced Deformations of a Geosynthetic Reinforced Soil Bridge Abutment Subjected to Longitudinal Shaking
Although geosynthetic-reinforced soil (GRS) bridge abutments have been used widely in highway infrastructure projects, understanding their response during earthquake loading is a remaining issue that is affecting their implementation throughout the U.S. In particular, the three-dimensional (3D) seismic response of GRS bridge abutments is critical to consider as the direction of shaking in the field may be uncertain and because experimental work has shown that it is possible to have horizontal deformations in directions other than the primary direction of shaking. Further, any horizontal deformations of the GRS bridge abutment may be linked with settlements of the bridge seat, so 3D deformations are important to understand. This study involves 3D numerical simulations of the seismic response of a hypothetical GRS bridge abutment experiencing one-dimensional horizontal shaking in the longitudinal direction of the bridge beam, focusing on the lateral deformations of the GRS bridge abutment in the longitudinal and the transverse directions. Time histories of the horizontal deformations in both directions are presented and synthesized with settlements of the bridge seat to evaluate the applicability of using the Federal Highway Administration (FHWA) design method linking vertical and lateral static deformations by assuming zero-volume change in the GRS mass to seismic loading.
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Availability:
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Supplemental Notes:
- © 2018 American Society of Civil Engineers.
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Corporate Authors:
American Society of Civil Engineers
New York, New York United States -
Authors:
- Rong, Wenyong
- Zheng, Yewei
- McCartney, John S
- Fox, Patrick J
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Conference:
- IFCEE 2018
- Location: Orlando Florida, United States
- Date: 2018-3-5 to 2018-3-10
- Publication Date: 2018-6
Language
- English
Media Info
- Media Type: Web
- Features: References;
- Pagination: pp 147-157
- Monograph Title: IFCEE 2018: Developments in Earth Retention, Support Systems, and Tunneling
Subject/Index Terms
- TRT Terms: Bridge abutments; Deformation; Earthquake resistant design; Geosynthetics; Highway bridges; Mechanically stabilized earth; Seismicity; Settlement (Structures)
- Identifier Terms: U.S. Federal Highway Administration
- Subject Areas: Bridges and other structures; Design; Geotechnology; Highways;
Filing Info
- Accession Number: 01686082
- Record Type: Publication
- ISBN: 9780784481608
- Files: TRIS, ASCE
- Created Date: Nov 20 2018 10:24AM