Centrifuge Performance of SCM Wall–Reinforced Pile-Supported Wharf Subjected to Yard Loads
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 148, Issue 5
Abstract
Yard loads may induce slope deformation and compress the piles of pile-supported wharfs, resulting in structural damage. In this paper, centrifuge tests were conducted to investigate yard load induced performances of pile-supported wharfs reinforced with T-shaped and F-shaped soil cement mixing (TSCM and FSCM, respectively) retaining walls. The TSCM and FSCM walls were located in the bent-yard connecting section and wharf performances were presented in terms of soil movements, bent displacements, soil and pore pressures, and pile bending moments. The results show that the slope soil migrated toward the waterside as the soil cement mixing (SCM) walls tilted, inducing tilting failure of the pile-supported wharf. The FSCM wall–reinforced bent showed greater displacements than the TSCM wall–reinforced bent at the same load intensities. Pore pressures were registered immediately after yard loads were applied but dropped to constant values or kept decreasing over time during the unloading period. Soil pressures generally increased with yard loading in the upper part but exhibited increasing-decreasing tendencies in the lower part. The soil pressures on the FSCM side were generally greater than those on the TSCM side in the upper and middle parts but smaller in the lower part. The bending moments on the FSCM side were generally larger than those on the TSCM side on landside because the structure-soil interaction was more intense. SCM walls are feasible and beneficial for reinforcing pile-supported wharfs under yard loads, and TSCM walls seem to be superior to FSCM walls considering their improved performance and economic efficiency.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This research was supported by the National Natural Science Foundation of China (Grant No. 51809132) and the Fundamental Research Funds for the Central Research Institutes (Grant No. TKS20200318).
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Journal of Geotechnical and Geoenvironmental Engineering
Volume 148 • Issue 5 • May 2022
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© 2022 American Society of Civil Engineers.
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Received: Aug 12, 2020
Accepted: Jan 21, 2022
Published online: Mar 10, 2022
Published in print: May 1, 2022
Discussion open until: Aug 10, 2022
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Cited by
- Zhen Yan, Yue Yuan, Centrifuge performance of LCSM wall reinforced pile-supported wharf subjected to yard load-induced marine slope soil movement, Marine Structures, 10.1016/j.marstruc.2022.103316, 87, (103316), (2023).