TY - JOUR
T1 - Seismic-Induced Deformations of a Geosynthetic Reinforced Soil Bridge Abutment Subjected to Longitudinal Shaking
AU - Rong, Wenyong
AU - Zheng, Yewei
AU - McCartney, John S.
AU - Fox, Patrick J.
N1 - Funding Information:
Financial support was provided by the California Department of Transportation (Caltrans) and is gratefully acknowledged. We also thank Dr. Charles S. Sikorsky of the Caltrans Office of Earthquake Engineering for his support and assistance with the project.
Publisher Copyright:
© 2018 American Society of Civil Engineers (ASCE).All Rights Reserved.
PY - 2018
Y1 - 2018
N2 - 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.
AB - 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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U2 - 10.1061/9780784481608.015
DO - 10.1061/9780784481608.015
M3 - Conference article
AN - SCOPUS:85048929286
SN - 0895-0563
VL - 2018-March
SP - 147
EP - 157
JO - Geotechnical Special Publication
JF - Geotechnical Special Publication
IS - GSP 297
T2 - 3rd International Foundation Congress and Equipment Expo 2018: Developments in Earth Retention, Support Systems, and Tunneling, IFCEE 2018
Y2 - 5 March 2018 through 10 March 2018
ER -