TY - JOUR
T1 - Numerical Investigation on the Performance of Geosynthetic-Reinforced Soil Piers under Axial Loading
AU - Khosrojerdi, Mahsa
AU - Qiu, Tong
AU - Xiao, Ming
AU - Nicks, Jennifer
N1 - Funding Information:
Support of this study is provided by the Federal Highway Administration (FHWA) under Contract No. DTFH6114C00012. This support is gratefully acknowledged. The authors thank Mike Adams of the FHWA who provided valuable input in the research. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and not necessarily the views of the FHWA.
Publisher Copyright:
© 2018 American Society of Civil Engineers (ASCE).All Rights Reserved.
PY - 2018
Y1 - 2018
N2 - In this study, a numerical investigation was conducted to study the settlement of GRS piers under applied axial loads. A finite-difference program was used to model full-scale GRS piers. The backfill soil is simulated using the plastic hardening model combined with strain-softening behavior. The developed model is validated against the results of full-scale GRS pier performance tests. The numerical results were compared with the observed pier settlement data, and it was found that the model adequately captures the behavior of GRS piers under axial loading. After validation, the influences of reinforcement strength, reinforcement vertical spacing, pier height, and pier cross-sectional dimensions were investigated through a parametric study. Results indicated that increasing the reinforcement strength and decreasing its spacing have a significant benefit in reducing the settlement of GRS piers.
AB - In this study, a numerical investigation was conducted to study the settlement of GRS piers under applied axial loads. A finite-difference program was used to model full-scale GRS piers. The backfill soil is simulated using the plastic hardening model combined with strain-softening behavior. The developed model is validated against the results of full-scale GRS pier performance tests. The numerical results were compared with the observed pier settlement data, and it was found that the model adequately captures the behavior of GRS piers under axial loading. After validation, the influences of reinforcement strength, reinforcement vertical spacing, pier height, and pier cross-sectional dimensions were investigated through a parametric study. Results indicated that increasing the reinforcement strength and decreasing its spacing have a significant benefit in reducing the settlement of GRS piers.
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U2 - 10.1061/9780784481608.010
DO - 10.1061/9780784481608.010
M3 - Conference article
AN - SCOPUS:85048926647
SN - 0895-0563
VL - 2018-March
SP - 99
EP - 108
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 -