TY - CHAP
T1 - Performance of bounding surface plasticity in the prediction of progressive soil deformation in integral bridge approaches
AU - Hassan, M. S. K.
AU - Liyanapathirana, D. S.
AU - Fuentes, W.
AU - Leo, C. J.
AU - Hu, P.
PY - 2025
Y1 - 2025
N2 - The structural continuity of integral bridges has resulted in a long-term, cyclic interaction with the approach backfills leading to two crucial geotechnical consequences, passive lateral stress accumulation, and progressive soil deformation. To investigate these phenomena, numerical methods have been commonly used. However, it is apparent that a majority of utilized techniques are unable to capture the critical facets involved with cyclic loading conditions. Hence, this study presents a comparison of the performance of the widely utilized Mohr-Coulomb (MC) model to that of the bounding surface model proposed by Dafalias and Manzari in 2004 (DM04). Evaluations are made against settlement and lateral pressure data from a scaled physical model of an integral abutment. Results indicate that the MC model is an inappropriate choice, being unable to capture the accumulation of stresses and plastic strains. The DM04 model can reasonably simulate the stress ratcheting response. The propagation of the settlement trough is adequately predicted, particularly at latter cycles. However, the variation in the rate of change of maximum settlements with the progression of cycles is anomalous from typical behavior.
AB - The structural continuity of integral bridges has resulted in a long-term, cyclic interaction with the approach backfills leading to two crucial geotechnical consequences, passive lateral stress accumulation, and progressive soil deformation. To investigate these phenomena, numerical methods have been commonly used. However, it is apparent that a majority of utilized techniques are unable to capture the critical facets involved with cyclic loading conditions. Hence, this study presents a comparison of the performance of the widely utilized Mohr-Coulomb (MC) model to that of the bounding surface model proposed by Dafalias and Manzari in 2004 (DM04). Evaluations are made against settlement and lateral pressure data from a scaled physical model of an integral abutment. Results indicate that the MC model is an inappropriate choice, being unable to capture the accumulation of stresses and plastic strains. The DM04 model can reasonably simulate the stress ratcheting response. The propagation of the settlement trough is adequately predicted, particularly at latter cycles. However, the variation in the rate of change of maximum settlements with the progression of cycles is anomalous from typical behavior.
KW - Finite element modelling
KW - Integral bridges
KW - Soil deformation
KW - Soil-structure interaction
UR - http://www.scopus.com/inward/record.url?scp=85208065293&partnerID=8YFLogxK
U2 - 10.1007/978-981-97-8233-8_10
DO - 10.1007/978-981-97-8233-8_10
M3 - Chapter
AN - SCOPUS:85208065293
SN - 9789819782321
T3 - Lecture Notes in Civil Engineering
SP - 91
EP - 99
BT - Proceedings of the 5th International Conference on Transportation Geotechnics (ICTG) 2024, Volume 6: Fundamentals of Road, Rail, and Harbour Geotechnics
A2 - Rujikiatkamjorn, Cholachat
A2 - Xue, Jianfeng
A2 - Indraratna, Buddhima
PB - Springer
CY - Singapore
ER -